Mikuni tmx 38 jetting chart There sizes (inside diameter size) within each series are listed according to a letter-number combination. com Jul 20, 2006 · After more studying It seems that the needles are coded per Mikuni as Suzuki, Kawasaki, Honda and Yamaha all use the Mikuni TMX38 carb and have their optional needles coded the same way. Here's how to use it. I bought the Air Strikers from JD jetting and told them what bikes I was installing them on. * In a previous post, "Carb Jetting Basics" I explained why jetting is important, what factors affect jetting, and how to do basic jetting adjustments. 5 and your bike is still running so rich it will fire up without using the choke, there is a strong reason to believe that maybe your pilot jet is not the reason. May 25, 2022 · Anyone have experience between stock needle and jets on Mikuni TMX vs JD kit? JD better jetting and throttle response than stock, especially at 6500' elevation? Been having jetting issues (I think) on my 05 yz125 and rather than figuring out what jets I need myself, I'm hoping JD already did it f SERIES 159 Overall length= 49 mm : 159 and 176 can be interchanged, but will perform differently. com Question, I am swapping a Keihin carb for a Mikuni carb, what jet do I use? The table below may give a place to start. 0 2. Apr 12, 2017 · The Needle Jet (aka nozzle) is also changeable. Oct 26, 2020 · So I would advise anyone who has a late model bike Equipped with a TMX 38 carby to replace the jet block gasket. Join Our Crew : http://bit. Second: While the carby is off, set the float height. 50 - 250 (Increments of 5) (Fits VM, TM) 250 - 250 (Increment 10 The TMS slide is used to do away with the main jet and use special Jet Needles instead. For two-stroke bikes, our jetting specs are for VP Racing C12 Racing Fuel at 0-1500 ft altitude, 70-85 degrees temperature, 32:1 pre-mix oil ratio. Nov 24, 2015 · That being said for the average weekend warrior or racer the mikuni jetting needs to be leaned out a bit from the oem specs. I have look for a chart but I cant seem to find one that goes high enough. If you have a stock Mikuni, your original seal is most likely needing replaced for better performance. The TMX carburetor is the Mikuni Factory Aftermarket and Racing Divisions premium 2 stroke carb and the carb of choice for all 2 stroke engines not bound by the use of older Mikuni Genuine Carburetor Jets To select a jet type “HOVER” over Jets on the menu to the left of the screen and click on your relevant selection from the drop down list. This part covers the introduction of the Mikuni 34 to 38mm carb. Nov 11, 2022 · JD Jetting jet block gasket kit Mikuni TMX 38 carburetor / o-ring repair rebuild | eBay to get the Mikuni to work you need to run it canted over about 8 degrees to the right, loop out the drain pipe, run the correct float height, run 2 breathers up into the airbox (or the headtube) and let the two others run down as usual. I was surprised my model didn't have the same border around the bowl-nut as later model TMX 38s. g. It was even better than the improved setting we had come across with a jetting change detailed in our first test (2017 KTM 300 XC-W Test). be/8klnekqfclkSo here they are! We love the JD needle in our 2018 KTM 250XC-WJD's sit Address 1930 Carpenter RD SE Lacey, WA 98503-2915 United States of America Phone: 360-350-0557 Email: tech@jdjetting. 5 / 460 combo and the '03 was 42. I use 340 mains in my bike right now on the stock carbs but what is that equivalent in keihin, and also will the j It determines the air/fuel ratio and affects the overall power output. Part Number Description; 1: VM26/116: TM28 Complete Starter Assembly: View Part: 1: VM29/47: TM32, 34, 36, 38 Complete Starter Assembly: View Part: 2: VM28/1046 OVERALL LENGTH = 11. Pilot Jet: 27. 02 cr250, sst was my least favorite pipe, followed by the fatty. It is well written and easy to do the tuning. O-Ring, Solenoid BV32/04 002-212: View and Download Mikuni TMX 35 owner's manual online. The Air Striker makes an even bigger difference over the TMX with the JD kits. Out of shear frustration I pulled out one of my Keihin PWK 39 Air Strikers and bolted it on. Valve Opening (Approximation) PRIMARY TYPE NOTE: Power Jet Option equipped carbs . com But Mikuni say late model TMX's should be set between 6-7mm as do the Honda and Husqvarna manuals from years ago. The biggest part of the problem is the needle design and the needle atomizer, both of which were improved in 2019. Sep 13, 2023 · The imbalance in your jetting means you are asking for fuel off needle taper when you should be controlling it with needle diameter. What is the typical number of turns out you start at? Does turning the screw in or out lower t Carburettor Float Heights (MM) Carburettor Descriptions Float Height (mm) CRS All CR Smoothbores 14 FCR All FCR Carbs 9 PE20 PE20 19 PE22 PE22 19 PE24 PE24 19 PE38 PE38 22. Aug 13, 2019 · Mikhuni TMX 38 Carb 43-73 Needle, clip 2nd from top. For woods riding with your YZ 250, I would start with a Suzuki NECJ in the #3 clip, you really should get the 1/2 richer NEDJ as well, because you may very well like the NEDJ in the #2 for the warmer riding The graphs below illustrate why I don't recommend using any of the 3 letter needles with 3 tapers in TMX carbs. Here’s what my bike has: Complete Athena stock bore top end Pro Circuit r304 + platinum expansion chamber elevation ~ 500-1500ft pump 93 + 32:1 premix No. The drain plug has a TMX + TMS needles: If you aren't sure what needle jet is in your carb then you'll have to get an idea what size opening the needle jet has by inserting different size drill bits into it unless of course you can unscrew it from the carb. Make sure your carb is the same length. This is a gap in a proper jet spec hence it ain’t running right. 00 AUD; Mikuni 640 Series Needle Jets $ 33. Please remember that sometimes the stock OEM jetting will work just fine, other times you may have to make an adjustment, so use our suggestions below as a guide to help with your jetting problem. Part way down page are needle specifications. To make a long story short when I got quad it had no air box. The second and third ride vas in +3 and quite humid air and thats when I discovered th Needle Taper Diameter Dimension Chart D-1 through D-5 indicates diameter (mm) at each point. com. The taper of the needle Feb 26, 2008 · Note that this is for mikuni needles only!!! We can talk of the 6GL67-61 needle. The stock needles also have a crazy taper, which will make jetting extremely difficult, even if the other components are pristine. Here are the float bowl modifications: Description of these mods, "The drain bolt holes connect to the outer holes in the bowl. . Mikuni missed the mark on the setup, and consequently they make better paperweights than they do fuel atomizers. After the carb swap to a keihin carb start with keihin 110 jet. Oct 7, 2021 · My 2010 YZ125 has a S4 needle jet (stock) . 7mm +/- 1mm. 25 x 0. 00 AUD; Mikuni 723 Series Needle Jet (HSR Carbs) $ 33. 38MM Carb jetting for a 1990 RM125 - Old School Moto - Motocross Forums / Message Boards - Vital MX The JD jetting kit is the only way to go if you are going to use the Mikuni TMX38 carburetor on the 2021 KTM 125XC. Closed. 5 (999-832-014) Unlike many motorcycle manufacturers’ purpose built and modified pollution compliant versions of the TMX carb Mikuni jets TM SERIES FLAT SLIDE carb carburetors and parts TM38-86, TM39/41 Pro #389 Series Q-2 Needle Jet: 38. 8 ThreadØ3. Used to modify GT750 Suzuki CV carbs for anti-surging (#0. It's INCORRECT. With a leaking jet block gasket you will be chasing your tail trying to jet the bike correctly. 2mm THREAD PITCH = 5. Size Range 4/042. It acts as a fine tuning component in regulating the fuel-air mixture. Created Date: 1/12/2001 11:14:38 AM. 7mm photo - James Dean photos at pbase. Mine came standard at about 6mm as did my mates bike. 3--#5 slide, I like to notch(4mm wide x 4mm deep) them on the front side, as it makes the pilot circuit more efficient, which in turn helps the bike idle Physical Address: Wahl Bros. Pilot Jets - two types were used, check photos for your carb: TMX early style use VM22/210 or TMX late style use N224. the lower the position clip from the top, the higher the needle sits, therefore the more fuel flow to the main jet you've got. Full Open. Small bores can be messy little beasts but only when not used properly. 103 Mikuni Pilot 32-xxx N224. KHS-048 HSR48 Jet Kit with box, 44 piece assortment. All Mikuni 6 series jet needles available direct through the Mikuni Factory are listed on the sales drop down list. Apr 11, 2022 · It's true this tmx is not the same as the one that was on my 06 yz125. Ditch the ktm/husk needle for the one from the 06+ yz125 and adjust your mains n pilots. Hi, this is tutorial how to tune up your carbureur Mikuni TMX 38. VM needles: Series 4 for VM18-24 carbs Series 6 for VM30-38 spigot, TM38 carbs Mikuni TM carbs : TM NEEDLES The TM38-27 is supplied with the following factory jetting installed: TM38-27, 38mm TMX Mikuni 2 Stroke Racing Carb (44mm Spigot) quantity. This is especially important when a bleed type needle jet is used. 0mm Length 5. Mar 4, 2022 · In addition to the problems mentioned above, many bikes equipped with TMX carbs are poorly jetted from the factory. Needle:5N7 . for instance with my setup i use a leaner jet needle and one size smaller than the chart recommends. I have the book but it's a clymer manual and doesn't have a chart like the Honda service manual , it only tells what it leaves the factory with. The TM 28 is a very different carb to the TMX series. Mikuni carburetor adjusting and tuning. Dec 16, 2021 · I recently took off the bowl, to perform one of the Jarvis mikuni mods (discussed at length here on TT). Needle Jet Sizes : Needle Jet Application Chart: Size: Dia (mm) Size: TM32 34 36 38 41 : 499: B : First with the trail setting and then with the race setting which required just a needle swap. Main Jet: 240. com Mar 13, 2018 · According to the specs I've been able to find (shown on JD jetting's website) the float height as measured from the gasket sealing surface of the carb body to the float when just toughing the seated needle should be 8. Pilot jet size:25 . Main Jet: 450. To lean the fuel mixture the ‘E’-Clip is raised on the Jet Needle. The size of the main jet can be adjusted to fine-tune the carburetor’s performance according to specific riding conditions. 7 Inlet Valve: 1. Description. The Jet Needle is the tapered rod that is positioned in the throttle valve by the ‘E’-Clip. Crazy as it sounds my pwk Jets well from 2-7000 feet from 40 degrees to about 95 degrees . Also for: Tmx 38. Dec 14, 2017 · I have a 2001 CR125 with a bad jetting problem. It has the mikuni tmx 36mm carb on it. Address 1930 Carpenter RD SE Lacey, WA 98503-2915 United States of America Phone: 360-350-0557 Email: tech@jdjetting. (if you plan to ride in Apr 9, 2013 · I have a lot of experience jetting the mikuni TMX 38 on the 125, but the 250 just ran so good out of the box that I never had to touch it. This chart also provide the various size ranges available for each style jet. Think I almost have it. Standard Jetting Specifications Carburetor # Venturi Size Main jet (VM4/042) Pilot Jet (VM22/210) Needle Jet Jet Needle Throttle Valve Air Jet Needle Valve TM38-102 38 340 25 R-1(Fixed) 6EJ12-57 4. I've seen main jet quotes from 350 all the way to 460!! Why is that and how can that be?? Which year jetting specs should I shoot for? The carb I'm looking at comes with a 3. These sizes are not particularly relevant until you decide to ream a smaller size to a larger size. Remember the tuning order is – idle circuit , then main jet and then finally mid range. 8 TM S Mikuni jets TMX LATE STYLE carb carburetors and parts . 5 Pilot AS 1 Turn I'm unsure about the needle jet but assuming it's stock as I don't have what I need to press it out. In this case "GL" which indicates that this is a two taper needle. Feb 1, 2019 · Hey Yall, I have a 2018 TX300 and am messing with the jetting here in California. The most any carb needs is two tapers. Dealer's Application The ‘E’-Clip can be raised or lowered on the Jet Needle. Includes all parts shown in picture. Dec 27, 2010 · Ok, just to be clear here, you currently have the 6fj40 for the needle, the 389 Q-6 for the needle jet and a 35 pilot? I have the 38mmTM Mikuni both the 85 and 86 series as being listed as a 22. Aug 29, 2001 · One or two quick ones here - Mikuni TMX 38 on a 1999 Husky WR125 . With this type of carburetor, the maximum depression zone is beneath the throttle valve (slide) which is raised and lowered by the throttle cable, controlling the speed of the engine. TMX Series Carburetors come in 35mm bore sizes for 125cc race engines and 38mm bore sizes for 250cc or larger race engines. of a wide range of Main Jets, Pilot Jets, Needles, A/P Nozzles, Needle Clips, Needle Washers. For example lets suppose that a Mikuni carburetor has a size 100 main jet in it, the equivalent Keihin jet would be a 110. A Mikuni TMX-x slide will only work in a Mikuni TMX-x carb. The 300 Description. 5 / 450, but if I remember right the carb was a little different and the slide was much leaner and the different "holder" or "needle jet". Mikuni VM, Keihin and Dellorto c Baffled chamber enclosing main jet allows for improved performance on rough terrain; Jetting may need to be changed per application; Use genuine Mikuni jets and parts for best results; Sold each; Made in Japan SPECIFICATIONS: Spigot OD: 47mm Bell OD: 62mm Main Jet: 370 Pilot Jet: 20 Air Jet: 1. If unsure about the bore of your carburetor, follow the carburetor sizing instructions outlined above. 5 Body 1. 103 POCKET TUNER MK-550-TNR. Most vintage, OEM Mikuni, round-slide carbs, have a pair of bronze-alloy floats soldered to a float arm. 38mm . To richen the fuel mixture the ‘E’-Clip is lowered on the Jet Needle, raising the Jet Needle. Pin, Float VM30/160 002-605 40. Quick Links. 8mm Slot Head14mm Length Plain, unbeaded nose Ø3. Your jetting dilemma is common with the 2018 KTMs and Husqvarnas. For needle shims see fastener Dont see the needle you need below, check carb rebuild kits. just look at the chart for a starting point and make slight adjustments. The Mikuni carburetor is a well-designed and highly effective component of a motorcycle’s fuel system. Its innovative float system, featuring independently moving floats and a main jet housed in a baffle chamber, ensures consistent performance even on the roughest terrain. May 20, 2009 · From FMF Jetting chart in FAQ page ballpark jetting should be: For 2000 Model - Keihin PWK For 2001 Model - Mikuni TMX. 0008" (I'll let those so inclined do the math to determine the flow difference) . Included are 2 ea. Not only are they Feb 19, 2014 · jetting a mikuni 35mm tmx carb: The main jet is easy-just start big (for most engines around 380) and work your way down until the motor revs out all the way with full throttle applied. Both parts are improvements to the original Mikuni design. See bottom of page to order the needle. I have used stock jetting and it runs terrible, it falls flat on its face when giving it gas it has a mean bog/surge. 5 slide, so I'm thinking I should use one of the years that specs a 4. Dec 14, 2018 · The art of jetting carbs is knowing some recipes, which usually work and then apply some common sense, e. TMX series carburetor. Mods: VForce 4R reeds "Airbox" mod - holes drilled for airflow Slide appears to have "Slide mod" done where there's an opening machined into the bottom of the slide. VM needles: Series 4 for VM18-24 carbs Series 6 for VM30-38 spigot, TM38 carbs Mikuni TM carbs : TM NEEDLES Dec 24, 2016 · MIKUNI TMX 38 JETTING SPEC Here’s what we ran in our 38mm PWK (stock settings in parentheses): Main jet: 450 (440) Pilot: 42. jetting is ez. What SUDCO stocks is series 633 S-4/7/8/9, and series 914 S-9. The TMX features a flat slide design in a smooth bore venturi to provide improved throttle response and wider power-band. I was using a 45 pilot jet, a 380 main, the 3rd clip on the needle and 2 and 1/4 turns out o Hello all, I have a 2017 KTM 150 XCW that has been really hard to jet. A handy pocket-size slide calculator which can be used to determine required jetting changes in Mikuni carburettors due to ambient temperature, altitude, or both. MK-DF44 CW2=0416 SCREW 4 W/WASHER DF44-201/03 GASKET 1 FIBER Mikuni MK-BN-38/44 Carburetor Rebuild Kit for Mikuni MK May 1, 2017 · Standard Jetting Specifications Carburetor # Venturi Size Main jet (VM4/042) Pilot Jet (VM22/210) Needle Jet Jet Needle Throttle Valve Air Jet TM38-18 38 370 20 N/A 6EJ12-55 3. this video shows a detailed description on all the adjustments. KHS-045 HSR45 Jet Kit with box, 44 piece assortment. The taper of the needle determines the amount of fuel. 00 AUD; Mikuni 633 Series Needle Jet $ 33. It is also important as it increases sensitivity to tuning, which is a good thing. ) Mikuni series numbers for style of the needle jet. Keihn jets are numbered by jet id, and the difference between a 178 and a 180 is about . Main jet Slow / Pilot jet Leak jet Needle Mixture screw (turns out) Stock or list modifications; Bombardier: DS650 : stock: 190: 48 : 3: slip on pipe and K&N: Make Model Year Carb Main jet Slow / Pilot jet Leak jet Needle Mixture screw (turns out) Stock or list modifications; Ducati: 750SS : Mikuni TM41: 220: 25 : 6DP4 ; Make Model Year Carb May 6, 2014 · Wanted to ask if anyone had a jetting chart with all the info including ambient temps, altitudes and jets used according to this. com Nov 2, 2011 · (38% off) Rocky Mountain ATV/MC The 2019 jetting chart seems to be spot on at 40:1. The Mikuni Power Jet kits are popular in 2 stroke engine applications because of their resulting improvement in mid-range throttle response and ability to add additional fuel to wide open throttle running conditions. I opened up the bottom of the carb and screwed out the main jet, which appears to be a 430. Fuel octane in the UK is advertised as Research Octane Number (RON), in the US it is advertised as Motor Octane Number (MON), they are not the same 98 RON octane in the UK is 89-90 MON octane in the US. Index of /files/tech-info 3rd from the bottom Carburettor Float Height Chart - Allens Performance Ltd. JD's slides will only work in non TPS Mikuni's, which with your KTM, you don't have to worry about. HONDA OEM NOZZLE/ NEEDLE JET S-4 784-13005 38. Standard Jetting Specifications Carburetor # Venturi Size Main jet (VM4/042) Pilot Jet (VM22/210) Needle Jet Jet Needle Throttle Valve Air Jet TM38-18 38 370 20 N/A 6EJ12-55 3. Since jet sizes are nowhere near the same numbers, im a bit confused on what I should be running. Part 2 of 3 videos on how to jet your 2 stroke MX dirt bike. One thing about the needle is you have to think of it like a valve to the main jet. 5. Phone: (218)782-2295 Fax: (218)782-2297 Aug 12, 2008 · Mikuni VM26SS roundslide . Detailed picture included for part identification. Oct 22, 2008 · Hey guys, I am thinking about picking up a set of Keihin 28mm pwk's but I dont know which jets I will need. 00 AUD; Mikuni 568 Series Needle Jet $ 33. com Aug 30, 2012 · hey guys, I'm going to be getting a Keihin 38mm airstriker. but I have no problem w/ this Mikuni. 10 20 30 40 50 60 70 A B xb y a D-1 D-2 D-3 D-4 D-5 D-6 D-7 Taper Point Single Taper Type Taper Point (1) Taper Point (2) Double Taper Type The Jet Needle controls the fuel mixture in the mid-range (1/4-3/4) throttle position. Hard to start in the morning and a "bludder" on even throttle (1/8) The first ride I did in +7 celsius and dry air and in that condition the carb was really smooth and nice, no issues. In this case # 6 which is TMX carbs The letters that follows describes the angle of taper. I think Honda 's R&D team at the time the 02-07 CR250 's were being developed must of been out to lunch when it came to the oem jetting specs. It has multiple slots In this video Mikunioz explain the basic procedures for tuning a Mikuni VM Roundslide Carburetor. If you are using it right, the jetting is off. 2410 S. These jetting components are shown REBUILD KITS PART NUMBER CONTENTS DESCRIPTION QUANTITY REMARKS Because different vehicles require different jetting, in this Mikuni Product Catalog and on MikuniPower. I am looking for anyone that has a good overall jetting hook up for the TMX as I can not in buy a jd kit or lectron at this time. Genuine Mikuni Jet Block gasket found on some 2000’s model TMX carbs fitted as OEM production items. I’ve put it all in lean to rich from left (lean) to right (rich) and top (lean) to bottom (rich) for ease of following. Sudco International Corp. if you run a #300 main-jet and the smallest pilot jet IIRC a #12. 00 AUD; Mikuni 914 Series Needle Jet TMX OEM Nov 3, 2018 · If it's really cold up to a 460 main jet may be needed, down to a 370 if it's a hundred degrees outside. No. Different carbs uses different needles. com Feb 23, 2015 · All, I am putting a 38MM Mikuni TMX carb on my 1990 RM125 and was wondering if anyone had any ideas of where to start with the jetting. Ring, Main Jet TM24-8001 VM28/449 002-664: 38 Carburetors Carburetor Kits Mikuni Parts By Category Mikuni Parts Finder Amal Jetting & Tuning TMX Series Flat Slide Carburetors 38: VM4/042 #340: VM22/210 Address 1930 Carpenter RD SE Lacey, WA 98503-2915 United States of America Phone: 360-350-0557 Email: tech@jdjetting. how to adjust them to factory, base specs, and a desc Aug 1, 2017 · Honda CR250 Keihin & Muikuni 38mm 2-stroke Carburetor Specifications - Keihin PJ28L / Keihin PWK00A / Keihin PWK00B / Mikuni TMX 11A Feb 21, 2009 · The flow difference between a Mikuni 175 hex jet and a 180 is about 6cc ~3%) . 9. The float system, with independently Jan 16, 2019 · MIKUNI TMX 38 JETTING SPEC Here’s what we ran in our 38mm TMX (stock settings in parentheses): Main jet: 450 Pilot: 35 Needle: 6BFY43-71 Clip: 3rd Air screw: 1-1/2 turns out. From there you can fine tune by checking plug color until you get a nice tan color. 8) available in the following sizes Sep 9, 2013 · The difference between 32:1 and 40:1 is less than the difference in a single step in jet sizes. Check the float level on both sides of the float. Enter all the data in the light blue data boxes for the program to automatically display the jetting results in a graph. Air Jet tighten 3x, and flywhell screw how you feel it when dirtbike is started. Float Assembly 859-32011 007-141 39. Mikuni jets TM carb carburetors and parts . ly/2SHy1FkThank Hi, this is tutorial how to tune up your carbureur Mikuni TMX 38. Here is picture of jetting settings of my '17 Sx 125,but i think that is same for "18 Sx 150(they have same carb Mikuni TMX 38). 130 38. Needle Jet: The needle jet is connected to the throttle slide and controls the mixture of fuel and air as it enters the engine. Tuning Parts in Relation to the Throttle . 5 ran like crap went to #30 better Needle Jet: Q-8. 0mm Thread length 50-200 (Δ 5) 210-500 (Δ 10) 520-720 (Δ 20) H5-N151067-A-SIZE Special Order M5x0. com Mar 30, 2011 · The JD jet kits I had in the Mikuni carbs made a big difference over stock parts. Both jetting settings were spot on and an big improvement over the jetting that came in the KTM stock. I was very surprised at how much difference it made. PILOT 35 MAIN 420 with Mikuni No. I ride from 1000 to 5500 feet elevation with temp from 30 to 60 degrees right now. com Nov 21, 2016 · Yeah, I have exactly the same feeling. Follow the tuning sheets supplied with the carb and if requiring a change, the perfect tune is easily achieved. Jet Effectiveness. Nov 28, 2015 · Jetting, Mikuni TMX S-7 Nozzle Swap, 2001 CR250 Although this was done on a 2001 CR250, the same basic principles apply to most carbuerated bikes. Some of the smaller, new, aftermarket carbs, like the VM18-144, still use this type of float, but you're more likely to see floats like this on 1970's era two-strokes Apr 7, 2025 · TM38-27, 38mm TMX Mikuni 2 Stroke Racing Carb (44mm or 47mmSpigot) The TM38-18 is supplied with the following factory jetting installed: Pilot jet 20 (VM22/210), Needle 6EJ12-55 (richer and leaner available), Needle Jet (Fixed in place), Main Jet 370 (4/042), Slide 3. Those who have done it say it transformed the jetting no more Mikuni Rebuild Kit. 5mm Length 5. Advice on a jet kit -- 38mm Mikuni TMX - Moto-Related - Motocross Forums / Message Boards - Vital MX Address 1930 Carpenter RD SE Lacey, WA 98503-2915 United States of America Phone: 360-350-0557 Email: tech@jdjetting. Oct 31, 2016 · Mikuni TMX38 RM125 Float Height 8. Needles not shown will only be available directly through the bike manufacturer for whom they will have been a specially made unique item or they are otherwise obsolete. common on the Yamaha YZ125, Nov 8, 2008 · Okay, I have figured out how to adjust my idle air mixture screw for richer/leaner, but not much seems to happen when I turn in/out the other idle screw other than locking the slide when turned full in. I have been searching the forums to get a feel for a range of jetting options, and have found it exhausting sifting through everyones conversations for mention of what main, pilot or needle they are using. Needle: STOCK. This works well to improve throttle response. Genuine Mikuni TMX 38mm Rebuild Kit for the 2004-2007 CR125 and 2004-2007 CR250 for the TPS carburetor. 8mm 30-65 (Δ 5) M10/14-SIZE 6mm Hex 1BA Thread 8. PILOT SYSTEM includes (PILOT AIR JET, TUNING/JETTING 32 Description. Click to view: 1: Mixing Body Carb: TM38SS11: View Part: 2: Jet Needle 6EN11-53 TMX35 6EJ12-55 TMX38: 6 Series Jet Needle: View Part: 3 Mikuni Needle Information. Stock is an S-1, the 300s come with an R-8, and there are a variety of others available for fine tuning for a given Jet Needle (aka Needle). This is a great kit and includes many pieces not available for individual sale. stock setting is 3 I guess my question is this. Description: Part No. The late model TMX (with electronic choke) is a full D slide. (310) 637-8330 • Fax (310) 637-8331. Includes: Jet block gasket; Torx bit for removal Feb 24, 2010 · Popular jetting is; #20 pilot #97 needle, clip in center slot #160-165 main jet on a Mikuni 42 #170-175 main jet on a Mikuni 45 #50 accelerator pump nozzle for either carb Google "Mikuni tuning manual". The first number indicates which serie the needle belongs to. Right settings for your bike by KTM is in red box but i would go to the settings in black box. You can use the Mikuni chart on the right to determine what type of jet you have. GENUINE mikuni jets - price each* OEM EQUIVALENT mikuni jets - price each Address 1930 Carpenter RD SE Lacey, WA 98503-2915 United States of America Phone: 360-350-0557 Email: tech@jdjetting. on 2nd notch from top. Dec 24, 2017 · I’ve knocked up a 2018 S4 flow chart showing the Mikuni needle codes, throttle region etc with colour coding to follow each bit your tweaking. (part number) in application chart above Needle Jet #568 Series 784-13002 Pg. It differs in the pilot jet and the other parts as mentioned. 5 PJ PJ 16 PWK28 PWK28 19 PWK33 PWK33 19 PWK35 PWK35 16 PWK35 A/S PWK35 A/S 16 PWK36 PWK36 16 PWK38 PWK38 16 PWK38… Read More » Mikuni uses several types of floats on their aftermarket and OEM carbs. The top end on this bike seems pretty flat but the throttle response seems OK. TMX 35 engine pdf manual download. 450 Main 37. Conclusion. Three makes the needle have too much diameter at the middle taper which results in mid throttle jetting leanness. For this reason, a JD jetting kit is a must if you want to go anywhere. And your m Jetting may need to be changed per application; see chart for included jetting; Uses geniune Mikuni jets and parts for best results; Faster and smoother air flow at the venturi results in better atomization and increased throttle response; Power-Jet kit may be used; All TMX type carbs use most VM components; Sold each; Made in Japan Jet Assortment Kits contain 44 pieces in a special jet box. 103 TMX late style use N224. Racing, Inc. The letter shows the inside diameter size in increments of . For example: the thinner the diameter of the needle, the more fuel will be drawn through the needle jet. Part No. Below is a screenshot of my spreadsheet page for Mikuni TMS and TMX carbs. KHS-025 HSR42 Jet Kit with box, 44 piece assortment. Current jetting: 500 42-74 #1 S4 35 Apr 4, 2023 · If the bore size is 38 mm, your options include TMX 38-27, TMX 38-18, TM 38-85, TM 38-86, or VM 38. I just have a stock mikuni for now. 0mm Thread length 50-200 (Δ 5) N100604-SIZE… Read More » Oct 14, 2014 · I recently purchased a Keihin PWK 38mm carb from Sudco to replace the Mikuni TMX that came stock on my 2003 CR250R. For example, the difference between P-2 and Q-2 is that the inside diameter of needle jet size Q-2 is . Sequoia Drive Compton, CA 90220 . The Jet Block Gasket Kit for Mikuni TMX Carburetors replaces the failed jet block gasket, and fuel needle seat O-ring with spare. Mikuni 454 Series Needle Jet $ 33. JD jetting sells a nice one for about 8 dollars, with 8 dollars shipping. This carb (found on Amazon) fits two-stroke off-road racing and Motocross uses. 5mm THREAD DIAMETER = 5. Can I improve the top end with a slightly larger Jun 29, 2020 · 1--Replace the jet block gasket 2--42-74 needle in the 2nd clip position. Found online that you need to lean the slide to the next size. Here’s our simple outline for basic tuning to get you started. The general rule is to lower your main jet size by 25% and to then in Jan 25, 2010 · According to Sudco, the standard jetting spec for a pwk a/s 38mm is actually 170 main 55 pilot and the standard needle is a 48-DDJ. 050mm greater than Mikuni BS30/97 Air Jet £5. GENUINE MIKUNI NEEDLES. Oct 11, 2020 · It comes with the JD jetting kit but the jetting is completely different from stock it seems so I have no idea about a baseline so I was wondering about some help or to hear what you guys run. On the Sudco website they have omitted the page which should contain the " Needle Taper Diameter Dimension Chart". Feb 22, 2016 · The Carb that you have listed above is a 91mm is length. 00 AUD; Mikuni 611 Series Needle Jet Ducati BDST 38 Size Y-2 (784-232301-Y-2) $ 33. 5 Needle Jet: FIXED Jet Needle (Needle Jet) Main Jet Operation of a Variable Venturi All Mikuni motorcycle carburetors described in this manual are of the variable venturi type. (The Mikuni needle data on my spreadsheet is even better than what they list because it has corrections for obvious errors they made in copying. Also try a one step hotter Apr 22, 2023 · Yet the jetting specs, for the same Mikuni 38 TMX carb are all over the place. Email: sudco@sudco. 2017 KTM/Husky TMX Mikuni Needle Jet Has 3 Bleed Holes: Mikuni TMX Jetting for low and high elev on KTM 300: Mikuni TMX Jetting for low and high elev on KTM 300: TMX at high elev in KTM 300: Mikuni TMX Jetting for low and high elev on KTM 300: TMX Test Ride 5000ft: Mikuni TMX Jetting for low and high elev on KTM 300 Sudco International Corp. Honda speced a different Mikuni TMX carb in 04' and it is a fifferent length, 75mm, than the previous carb. The jet needle controls the fuel mixture in the mid range throttle position which is approximately 1/4 to 3/4 throttle opening. Jet Needles TM36: LEAN: Jet Needle TM36 #9DZH06-50 (Std) 007-109 Jet Needle TM36 #9EBY01-51 2. 050mm. 51 Leaner 007-106: RICH 8) Mikuni TMX 38-27-K Series 38mm Bore. If you're working on a vintage motorcycle with a Mikuni OEM carb, you might be surprised to find your main jet is still available. It features the radial flat side throttle design for the valve. The taper of the needle increases the clearance between the Jet Needle and the fixed Needle Jet outlet as the throttle is opened. When back to stock airbox. Needle clip:Middle (clip #3 of 5) Main jet size:200 (some dealers will provide or install 190, 210 or 220 mains) Main jets are standard Mikuni small hex mains, available from most bike shops, and come in increments of 10 (210 is one size larger than 200, etc. will affect other tuning components. 0 slide, which is close. i am still using the same pilot jet as the chart but next full rebuild i will be switching to one size smaller (just to see if The table of orifice diameters below is Mikuni published data. 20 each Meters the air flow through the passage to and into the needle jet. If you go by this table, you will end up with a needle jet approx 3 sizes richer than the one you're aiming for. It is on the web and down loadable. Here are the full specs you might want to try: pilot jet #40 needle # 6BFY43-74 (3rd notch) needle jet #S4 main jet #410 The factory 2009-2010 YZ125 jetting specs are known to be almost spot-on perfect for motocross track riding in 70-80°F. Lectron and Mikuni TMX: Float Pin Lectron carb and Mikuni TMX: Smart carb and Mikuni TMX: Float Pin Smart carb and Mikuni TMX: TMX 38 Test Carb 1: Lectron Carb 36 Test 3: Lectron Carb 38 Test 4: Keihin PWM Carb 38 Test 5: KTM Keihin PWK Carb 36 Test 6: 36mm Carbs Compared Keihin PWK Smartcarb Lectron: Comparison Smart Carb to Keihin PWK Jun 22, 2019 · You all asked for our jetting specs after our last video https://youtu. It's no secret that Honda's Mikuni carbs on their CR two-strokes in the 2000 era are poorly jetted from the factory. 6 Mega Guitar Amp 6sn7 Sound Crusader Kings 2 China Mod Omnisphere 2 Mac Download Double Spacing In Word For Mac 2016 Mcdsp Emerald Pack Torrent Mac Os Mac App Store Os X Mavericks Download Nov 9, 2014 · Are you sure it's the stock 2002 carb? Stock '02 was a 32. Feb 19, 2012 · you dont need an airstriker. I hear that the 01 CR250 was more fun than a barrel of monkeys to get dialed-in. com To select a TMX carb or carb parts “HOVER” over TMX 2 Stroke Carbs on the menu to the left of the screen and click on your relevant selection from the drop down list. This manual should be retained for future reference. The chart below showing dimensions of some 5 series needles may be of assistance in determining alternative options. If the stock series needle jet was the longer version, then also purchase 002-207 main jet extender to get the correct length. A chart of their diameters is below. The stock carb is a 34mm. The jet block is set in place with a tamper-proof torx screw and should normally not be removed, over tensioning of the screw or replacing this gasket with a non genuine thicker rubber may cause the block to split rendering the carburetor non repairable. 16860 State Hwy 11 Greenbush, MN 56726. I have an 01' CR250, Mikuni TMX 11A carb. If at all in doubt, see your local tuning shop. Nov 21, 2017 · Hi, When you choosing jetting settings for KTM you can ussualy go one up and one right in table. For now, I just have a FMF pipe, but want to eventually go with V Force 3 reeds (opinions on Oct 20, 2012 · I've been working on the jetting on this bike for a while. I have 1983 Suzuki PE175D where had problems with the orignal Mikuni VM34, replaced needle & seat; needle jet together with needle jet; seat valve adjusted float level it was too high fuel coming out of overflow and no snap off bottom very difficult to wheelies and runs rough as bottom 1/4 throttle too rich middle not much better and 1/2 to WTO full throttle flat spot and not running right. The TM 28 (even the OEM ones) are Flat Slide Mikunis where the TMX is a modified D slide. The bike came equipped with a Mikuni TMX 38. I Address 1930 Carpenter RD SE Lacey, WA 98503-2915 United States of America Phone: 360-350-0557 Email: tech@jdjetting. Add to cart. 5 pilot, 389 Q2, and the 6fj41. ) Here's what Mikuni VM's typically are equipped with. Needle Taper Diameter Dimension Chart (a)=Needle Length (mm) (b)=Length between points (x) and the taper point (Y) 1=10mm 2=20mm 3=30mm 4=40mm 5=50mm Nov 28, 2018 · Here are the jetting specs: Left column is sea level + Lesotho jetting would be for 5000 ft + You want about 1 to 1 and a quarter turns on the air screw with the jetting spec I gave at sea level. Dealer's Application (The Mikuni needle data on my spreadsheet is even better than what they list because it has corrections for obvious errors they made in copying. 5 None The TMX features a flat slide des May 4, 2013 · I have a 2001 CR250 with a 38mm mikuni TMX. These are easily installed on Mikuni VM and TM series carburetors and come with a full set of instructions. 5 Needle: 43-73 Clip: 3rd Air screw: 2-1/2 turns out (1-1/5 turns PART NUMBER PICTURE DIMENSIONS AND FEATURES SIZES 4/042-SIZE 6mm Hex 1BA Thread 11. 5 None . Aug 1, 2019 · The slide pictured on JD's website is the correct slide for a Mikuni TMX-x carb( the slide you need) . Tel. Apr 10, 2023 · Tired of having to re-jet your Mikuni TMX carb after fouling plugs over and over again? The Keihin PWK air striker carb conversion is a great way to make save you time and hassle of fiddling with the jetting. com Mikuni Tmx 38 Carburetor Manual Best Mac Auto Clicker For Bluestacks Atem Software Control Mac Plugin Alliance All Bundle 4. Pilot Jet: was 37. qbzu mhyztxr pgdcb ouyrk sjhqdkj shba dkmshw nfpg kxunrp hqvloj