Rm250 jetting chart. I ride in areas with elevation of 500 to 1000 ft. 99 - $79. Steahly flywheel weight . It has a bills pipe and v force reeds. Specs for SUZUKI 1978 RM250. Jul 12, 2014 · Post a reply to: Jetting help '04 RM 250. larger mj than the rich taper needles like. The jet needle is connected to the throttle valve and controls the mixture from approximately ¼ – ¾ throttle. Pump. Notes: Way back in Feb 23, 2017 · Then inspect/and or replace reed valves. 0 slide. Search for 1982 RM125 parts! Dec 6, 2004 · 135 posts · Joined 2003. Apr 22, 2009 · I am having trouble getting my brand new rm 250 running right. You can see as altitude increases, jetting gets leaner but for the same altitude, as the temperature gets colder, jetting gets richer. 5 out Main Jet 165 1997 Pilot Jet 45 Needle STOCK Clip Position 3RD Air Screw 1. It was a little rich on top, but nothing that changing the stock 168 couldn’t fix. 25 : 45 : Kawasaki: KX65: 190: 25: 5GSP68 : 3: 1. I run Red Line sythetic racing oil mix at 70:1 in my 02 rm 250 (and in every bike I have owned, don't let it scare you it will not blow) and do not have any problems with "spooge" ever. Needle: DGH needle, middle clip position. Main Jet: 178 Pilot: 55 Needle: stock w/clip in the middle Air screw: 1 1/2 turns out. 93 octane pump gas. Front Wheel: 1. Jul 31, 2020 · 1999 SUZUKI RM250 SPECS Engine: Water-cooled, 249cc, two-stroke, (45 stock) Power Jet: 55 Needle: N1EG Slide: 6. The jet kit includes instructions and charts that carefully walk through the installation process and offer guidance to help get peak performance at all elevations and in all conditions. May 4, 2022 · Suzuki RM250: history, specs, pictures. Oct 19, 2008 · 1996 rm250. These are recommendations only, based upon our testing at sea-level atmospheric pressure, a 65-80F degree ambient air temperature, a 32:1 fuel to oil Jul 20, 2010 · Air screw was adjusted at approx 1500-2000 rpm for better throttle response. Step 1: Choose the group of charts designed for the nitrous system you are using. Reed brand and type: CR250 cage with unknown fiberglass reeds and 5mm. 99. May 3, 2023 · My Rides (3) Curious if there is a jetting chart or a standard "drop/add one main size per X number of elevation change" rule for the 250X? Currently have the bike jetted for 2000ft @ 75 degrees with 175m, 45 pilot, 40 power, Suzuki NECJ needle on third clip. I would also recommend that you replace the stock #45 power jet with a #48. The ‘98 RM makes power in the same basic window as the 1998 Kawasaki KX250, but that’s where the Carburetor Jet Size Calculator. . Had my bottom end rebuilt and cylinder replated. Oct 6, 2010 · 2002 RM 250 Jetting Help. 60 x 21 Takasago Rear Wheel: 1. Anyone who has a 03 rm 250 please help,I'm running mx2t @32:1 w/race gas in my bike. Suzuki. James Dean purpose-built this jetting kit for riders looking to improve running performance and throttle response throughout the RPM range. I was looking at jetting chart and it says to replace the stock #45 power jet with #48. (for motorcycles only) NOTE – Advanced Options – You can just go with the default settings here as all motorcycles are factory set to run at sea level and at 20′ Celsius (68′ Fahrenheit). Open carb to inspect, clean, and replace anything suspect. 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. ( black highlighted is the default jetting) That jetting is for 1000ft - 2500ft elevation and the manual recommends 60:1 ratio for the gas and premix. yeah lean that out a bit buddy. / gallon. On warm day we ran a Description. jet needle- 6BGY27- 79 -2nd. Code: RM250Z 1983 May 25, 2004 · Worn reeds will mimic rich jetting, and worn rings will mimic lean jetting. 1 1/2 turns out @2000 ft. if it is a california bike, then the pilot jet is a #48, and your main jet is a #162. 00-21 Bridgestone Motocross M23 Rear Tire: 410-18 Bridgestone Motocross M22. put the needle in the middle clip. 2008 RM 250 jetting for pro circuit works pipe - Tech Help/Race Shop - Motocross Forums / Message Boards - Vital MX The Needle Jet and Jet Needle The needle jet and jet needle regulate fuel delivery throughout the mid-range. 0; Needle: Third clip position (Cxx/R13xx) Air Screw Shop official FMF Racing dirt bike & ATV mufflers and exhaust parts, exclusive apparel, t-shirts, hats, goggles, and sunglasses here. When mixing 32:1 as you do you need to ride the engine more at top rev than lugging around. Moose Carburetor Repair Kit. Page 51 MACHINE TUNING NEEDLE CLIP POSITION JET NEEDLE Lean Needle O. Jul 1, 2017 · Yea it’s the shorty body with tps and power jet. 95 - $75. pilot jet- 42. a non california bike has pilot jet #168. As soon as the bike tops out, pull the clutch in, and kill the engine, coasting to a stop. Try the following and it should clear up the jetting a make it a lot easier to start. Jun 2, 2021 · Dirt Bike Jet Kit. Warm the bike completely, and shut it off. Pilot jet: 50. Page 1 RM250 OWNER’S SERVICE MANUAL Part No. 3 in) Overall Width: 885 mm (34. i have a Keihin carb, not a Mikuni the pilot and air screw control the idle circuit the rest is controlled by the main jet, needle, needle position, and slide. Nov 3, 2003 · Nov 2, 2003. Features: Low and high altitude custom designed triple taper needles; Main jets included Apr 14, 2014 · The air screw is very sensitive from 1/2 turn to 1 turn out. Clean fresh new sparkplug and check for strong blue spark. I run t2. Got a 1997 RM250 that I'm trying to get into better shape for hare scrambles. 85 x 18 Takasago Front Tire: 3. D. Posted March 30, 2008. pilot: 48. Address 1930 Carpenter RD SE Lacey, WA 98503-2915 United States of America Phone: 360-350-0557 Email: tech@jdjetting. Main jet: 178. It came with a 310 main, 35 pilot (i put in a 45) Q5 needle jet, 6FJ6 needle in the middle clip seting #3, 2. Remember that your fuel/oil ratio can have an effect on your overall jetting too. The jetting is close,but would like it to be better. 45 degrees F. This Dec 1, 2022 · Start the engine, and do a full-throttle run down the straight, through all gears. #6 · Dec 7, 2004. Jun 22, 2008 · Most bikes come jetted from the factory for 70 degrees and sea level (0’ elevation). The kit comes with instructions and charts that carefully walk through the installation process and offer guidance to help get peak Jan 26, 2007 · Hi, rm250 2002. 2003 RM250 USED BIKES. Its done about 10 hours from brand new and seems to bog a lot in the bottom to mid range (this is stock jetting from brand new). I’m now looking into my carb and would like to know any helpful info on jetting/air screw, Posted August 20, 2010. my jetting for 3500 ft is: Nov 16, 2011 · 1996 RM250 PWK Conversion help. It may need fine tuning as the temps warm. Having some issues with jetting ( or I think I am) bike is a 2006 rm250 fresh topend new reeds and cleaned carb. Currently riding a 2004 RM250, and I recently installed a Pc Works pipe with an R304 Shorty Running on 91 mixed at 40:1 using Castor 927. Air screw: 1 turn stock. Needle jets are available in an assortment of sizes for most of the Mikuni round-slide and flat-slide carburetors. Clip: 2nd from top. Trying to dial in jetting on my 06 rm250. -If you will be racing or running in open desert conditions, richen each jet by one size and the needle by 1/2 step. dotwell04, The 98 RM125 was delivered with a main jet that was way to rich from the factory. I just purchased a 2002 RM250. 5 slide, 3. 1. The shaded area is the stock setting. Cut to a month later Aug 18, 2009 · I have a 02 RM250 that is running a little rich the manuel say's stock main jet should be 170 pilot 48. 180 sounds a little rich to me. Stock needle in # 1 position. I remember a friends 93 I used to borrow and race. Now my issue is that the bike starts great cold but takes 4-6 kicks to start when hot. 8 in) Overall Height: 1 220 mm (48. 0 air jet. try the 168 and do a plug chop test. Any used Suzuki RM250 from 2001 forward is a good find. Issue I'm having is the bike tends to bog On hill climbs, wide open, etc. RM250: 168: 48: NECJ: 3: 1: 45: 7 : Pro Circuit: 168: 48: NECJ: 3: 1. 5-8ish, 172 main, 42 pilot, 50 power jet, NECJ Suzuki needle on third clip, 1 3/4out on the air screw. Here are our jetting suggestions for your RM125. Bottom clip is clip #5. #1. Pro Circuit Platinum Pipe, R304 Silencer. I traded my pipe and forked over a little bit of dough to pick up an fmf gnarly silencer paired with my procircuit r304 shorty silencer. needle: N8RH 3rd position. Apr 10, 2023 · ’98 and newer Suzuki RM250 w/TPS ’99-’00 Honda CR250 long-body w/out TPS ’02 and newer KTM 2-strokes (some are the Air Striker, while some are the standard PWK, as well as 36mm) Starting Point For PWK Jetting On CR250 or CR125 CR250: Elevation: 1000ft; Main: 175; Pilot: 45; Slide: #7. My bike seems to be running very crisp. Chain: RK520KS-112L Front Sprocket: 12T Rear Sprocket: 51T. Therefor you are currently at #4. Sep 2, 2004 · Jetting The 93 RM250's come really rich from the factory. I have the jetting close to dialed in. theres a jetting chart in Suzuki 2T facts on the 2nd page I think. The needle seats into the needle jet and regulates the air-fuel mixture from the jet to the carb throat. Jul 10, 2020 · Rm250 jetting. 5 turns out Main Jet: #175 Slow Jet: #50 Jet Needle: N8RH 3rd Clip Position Cut-away: #7 Power Jet: #55 Stock Pipe, FMF sile Sep 2, 2020 · Alright, so I’m getting close to having this bike back together after a full rebuild(2000 Rm250). During your 2-stroke carb adjustment, pay close attention to the needle. The bike setup is fmf gnarly pipe with pro circuit silencer. By Kx65crazy, March 1, 2008 in RMZ 250. When I pulled it out the main was 185 how far should I drop it down bills calls for a 168 main. Notes: The 2013-14 YZ250 jetting is on the edge–albeit the good side of the edge. 88 ft/lbs (50. stock needle on the 3rd clip positon. SUZUKI RM125 JETTING RECOMMENDATIONS. James Dean designed this jetting kit for Suzuki riders looking to push their motorcycles to the next level. Feb 25, 2022 · A: The stock 2005 jetting is a 168 main jet, 48 pilot, 45 power jet, NECJ needle in the third clip position and the air screw at 1-1/2 turns out. Stock Plug and 32:1 Maxima Castor premix used. 18033 S. hey guys, something i found out is if you have a canadian bike its rich,ours had a 170 main,the nldt needle on 4th clip,2 out on mix screw. I used a 168 main, stock NECJ needle with the clip in the 3rd clip position from the top, and a 48 pilot for 70 degrees and 0’ elevation. As mentioned above, the needle jet takes over most of the fuel delivery from the pilot circuit as the throttle is opened. 5: O-0 : Pro Circuit: 200: 27. One thing is certain, however: Compared to other 250s, the RM lacks torque, with a noticeable deficit of what is best described as “grunt. 2013 YAMAHA YZ250 JETTING. JD Jetting Jet Kit. Nov 19, 2015 · Jet Needle. 165 main, 42 pilot. I also modified the slide, ported the cylinder, installed a V-Force reed and a FMF SST pipe. Sounds wierd, but less oil means the ratio of fuel entering the carb. Jun 11, 2013 · ThumperTalk. You move the clip by pushing the open end of the c-clip against something to pop it off. This JDJetting kit is purpose-built to improve throttle response throughout the RPM range. Dec 10, 2007 · Mixture ratio and fuel: 40:1 HP2 with 100RON (95 octane) Carb Type: 39mm Air Stryker. Leak jet - four-strokes only. 5: 48: 7 : RM-Z250: 162: 45: NLCT: 3: 2. Free Shipping on orders over $50. Since this kit was designed and tested on your model, JDJetting discovered fueling issues holding back performance. 25: 1. It wasent rideable before and now I’d say it’s 85% there. 5 out Main Jet 170-175 1996 Here are our jetting suggestions for your KX250. As recieved: Leak Jet: 55 Main Jet: 175 Needle: NCYU – 5th groove from top Pilot Jet: 45 Jun 25, 2003 · Set the air screw at 1-3/4 turns out. The Main Jet 168 2002 Pilot Jet 48 Needle STOCK Clip Position 3RD Air Screw 1. Dirt Bike Jet Kit. Replace if not sealing, looks hard or rough. com. Wire Accel. Although if you hop the YZ250 up or Apr 30, 2020 · PC’s jetting recommendation is a 160 main, pilot 48, needle N3WK - at the 2nd position, air screw 1. The chart indicates that the carburetor can supply correct air/fuel mixture to the engine in any range because of the overlapping adjustable range of the each part. 5 : Pro Circuit: 138: 42: NAPE : 2: 1 Oct 11, 2014 · I'm at 4500ft, have a 168 main, 45 pilot, stock needle, 2nd clip and 1 1/2 turns on the A/S. 99011-37F56-01A May, 2006 Page 2 This manual should be considered a permanent part of the motorcycle and should remain with the motorcycle when resold or otherwise transferred to a new owner or operator. Santa Fe Ave Rancho Dominguez, CA 90221-5514 PH: 310-631-4363 FX: 310-900-5699 www. Aug 23, 2008 · Posted September 1, 2008. It is after all unburned premix oil. Dirt Bike Jet Repair Kit. By hefe055, June 29, 2009 in Suzuki 2 Stroke. We’ve spent countless hours of testing to determine which settings work best when bolting on one of our pipes and silencers to a stock machine. So, I’ve heard both, “run it Jan 27, 2010 · the stock jetting in your rm250 k1(2001)depends on the california model or not. The earlier models in this period were harder to jet. Jan 16, 2014. Runs great with just a little spooge. Mobil 1 MX2t 4. Your needle should be on the 3rd clip from the top. 165 main. HardTacp. FMF Power Up Jet Kit. 0 Nm) @ 7500 RPM. It did have the pro circuit jetting specs in it which most people run. Sep 6, 2007 · Jetting recommendation for 05 RM 250 --- sea level Cali 80-90 new oem piston pc pipe, v-3 reeds stock gearing 100 pump gas w/ 927 @ 32-1 (zero spooge) thanks Mike Description. main jet : 168. com Oct 6, 2014 · Jetting Specs. For four-stroke bikes, our jetting specs are for premium pump gas at 0-1500 ft altitude at 70-85 degrees temperature. stock power jet. stock timing. Jetting Specs: Main- 162. Price: $59. 5: O-0 : KX85: 140: 45: NAPE : 3: 1. drop the jetting down one size and see if it clears up a bit. . Price: $75. Suzuki RM 250: history, specifications, images, videos, manuals. Pilot-48. I live in Portland, Oregon, about 300 ft elevation. 7. If you can't get a satisfactory idle w/the knob turned out 7-8 revolutions from fully seated, richen the pilot jet (one step larger). From what I know all is stock size except the stock main is a 168. I am pretty sure that these are the jets that I am currently running. Now just follow along on the chart and find your current riding conditions (Temp and Description. It's running rich i moved the needle up 1 clip leaner adjusted air mixture main jet is 155 and pilot is 42. 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. nlct. Price: $14. Here is a chart that you can refer to when jetting your bike. BBR GENERAL JETTING GUIDELINES Jan 2013 ASSUMES: 92-100 OCTANE FUEL (pending engine requirements) ASSUMES SEA-LEVEL / 60 - 70 DEGREES BBR: MM12P PE 28mm Keihin Standard Carb Settings / m=main / p=pilot / c-=needle clip position 125m/40p/c-#2 Oct 8, 2010 · i also went threw and cleaned the carb and so i could also check the jetting. Float height 7. Needle: N3EW. above sea level. 48 pilot, 165 main. The engine is well run in now, the next step is to sort out the jetting, I have already droped the needle one clip position, there is a fair bit of oil coming out of the exhaust, so the next step will be to drop the main down from 172 to 170. Welp I ended up finally getting the pipe I wanted for my 2004 rm 250 2smoke. Picture for Suzuki RM250 1978. 0 in) Ground Clearance: 280 mm (11. Posted October 6, 2010. Kx65crazy. Dec 23, 2001 · Firegod23. 0 KW) @ 8000 RPM. 99 - $83. 1-1/2 turns out on the air screw. Note jetting sizes and start with stock including air screw setting. With the Suzuki needles you run way leaner PJ and MJ, compared to the stock YZ jets so I kept dropping Jul 17, 2012 · Hi. Most riders just gave up and ran race gas, mixed half and half with pump gas. S. 375 : 3. The detonation sound was present from 3/4 to full throttle. Not the elusive needle jet 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. [03-03 / #000349] SUZUKI RM125 JETTING RECOMMENDATIONS. Bike has power right off the bottom (can pull the front tire up easy), but at around 1/8 throttle to 1/2. hello all new here and having some issues figuring out my jetting my bike has an fmf gold series sst head pipe and fmf silencer it runs fine plenty of power doesn't seem to bog but does ping when lugged. I was able to start the bike up and ride it around a bit in the rain and it seemed to have some more low Jan 26, 2002 · Jan 25, 2002. Oct 28, 2009 · Posted October 28, 2009. If you are running a 178 main, youare WAY to RICH. We recommend Maxima Castor 927 High Performance 2-Cycle Oil. Sudco Catalog Mikuni Carburetor Jetting Section. Its running rich somewhere Dec 21, 2008 · After years of horrible RM250 jetting, Suzuki did a fairly good job with the 2007 model. I race only in 5000ft - 7500ft of elevation and I use 50 : 1 for the premix. Step 3: Choose the desired horsepower level. It idles fine, runs great on the main and in between, but the issue I'm having is when I Feb 2, 2008 · just installed a Mikuni 36 mm from Vintage Suzuki. Share More sharing options Followers 0. Posted March 1, 2008. Mods are pro circuit pipe and spark arrester,V-force valve. The manual contains important safety information and Mar 21, 2022 · 1999 SUZUKI RM250 SPECS Engine: Water-cooled, 249cc, two-stroke, (45 stock) Power Jet: 55 Needle: N1EG Slide: 6. My bike runs better than ever on this as of now. It runs fantastic. I have a 55 pilot jet and 170 main. Bike: 2002 RM 250. (N427-48) Suzuki (Rich Taper) 2008 RM250. Claimed horsepower was 54. ” Feb 2, 2002 · FWIW-I finally got some time to tune it to near perfection. A NOZJ needle is richer than a NOZK needle. Current jetting is 162main,42 pilot,stock needle, 2nd clip,48 power jet,A. #11. This is my first ever rebuild so it’s pretty intimidating. 3 needle valve and 2. For elevation I'm at 5,000+ ft. History Year Country Name / Frame / Engine 1982 North America Name: Suzuki RM250 . Nov 1, 2000 · The stock jetting was pretty close, but we found the best settings to be a one-step-leaner main jet (#160) and a halfclip-leaner needle (#N3YK in the third position). Feb 9, 2000 · We also run fresh 92-octane gas, work on our bikes every week, clean the filters, change pistons and rings regularly, are alert to pinging and haven’t changed oil brands in over a decade. powerjet: 50. Aug 26, 2008 · So I built a chart that will cover the 2005-08 RM250. fmfracing. #3 clip. 0 Air screw: 1 1/2 turns Clip: Groove number 2 Note: The RM250 is very rich. i would run it at about 40:1 and try going down on your main jet. 95 . air temp around 70-75. Aug 9, 2012 · Your dirt bike engine and part information source. 42 pilot. Size. Sudco offers a full range of jetting components for both Mikuni and Keihin Carburetors, and Sudco Carburetor Rebuild Kits which include all necessary jetting, gaskets, valves, clips, springs, washers and seals to return a carburetor to like new operating condition. stock- 460. I haven't seen any posts about the '02 RM 250 so some jetting help would be appreciated. of Needle clip Rich Clip The jet needle is linked to the throttle valve by NEEDLE NUMBER means of the needle Nov 18, 2021 · Pilot Jet: 50. It is a canadian model and it was stock jetted way too rich Summary of Contents for Suzuki RM250. Jan 15, 2014 · 271. It has a nice, pleasant, manageable and well-placed low-to-mid powerband. By 2005 the jetting issues were sorted out. Keihin PWK Needle. The tools required to re-jet a carburetor are basic in nature and predominantly consist of the usual tools needed to service your machine such as sockets, wrenches, allen wrenches, and screwdrivers. I recently purchased a Keihin PWK 38mm carb from Sudco to replace the Mikuni TMX that came stock on my 2003 CR250R. Jan 28, 2009 · Main jet: Pilot Jet: Air screw (turns out): Needle model/Clip position: Altitude where you ride: Reeds: Pipe/silencer: Head mod: Other mods: Type of fuel: Where in the powerband do you ride (Lugger - for technical stuff, or wide open - desert / MX): Degree of satisfaction: And finally: how much spooge 1) none, 2) little, 3) medium, 4) lots: Notes: May 17, 2015 · Bought a JD jet kit and cant seem to get my jetting anywhere close for this bike. com Jan 31, 2018 · The lowest clip position is the richest, lifting the needle up to allow more fuel to flow through. is more, therefor richer (fuel-wise). However by adjusting these settings will help you achieve a more accurate calculation. and dessert trails kinda fast. Ridden 1000ft-2000ft above sea level. Always keep a fresh no toil air filter and repack the silencer every 10-15 hours. The kit comes with instructions and charts that carefully walk through the installation process and offer guidance to help get peak performance at all elevations and in all conditions. choke clicker- 12 clicks out. Below you see a copy of Beta’s Xtrainer jetting chart. You got to remove the top of the carb and pull the slide out and access the needle from the inside of the slide. mods are " fmf turbince core 2 silencer " stock everything else " air lid cover on. 5 : 40 : Pro Circuit: 160: 40: NKZT: 5: 2. However, the bike will be raced at 6500 up to Yamaha lean taper needles needs 2 to 3 step. It’s prob just under half to full throttle. "summer winter " summer 85 f to 100 degrees F in summer and winter about 80 degrees i ride in the open dessert half the time really pushing the bike most wide open. Posted June 29, 2009. Air screw: 1 turn out. Basic Gray. Needle:2nd clip from top. 1 in) Aug 10, 2020 · I can read a jetting chart, I have found that the 05-08 RM 250 have a different jetting chart and have rejetted. 5 oz. The top clip, furthest from the needle tip, is generally known as clip #1. the Suzuki and N1E/NOZ_ series. It has the original PJ Carb with pro circuit pipe, fmf silencer and a new vforce 3 reed block. Motorcycle Carburetor Jet Size How To Read A Jet Chart. We leaned it out by one main jet size (165) and Jan 17, 2007 · ThumperTalk. Apr 1, 2008 · The jetting is as follows, main is 170, slow jet is a 48, power jet is a 45 and needle jet is nesc on second clip ( from the top). I will take delivery next week and hope to immediately install the pipe, weight and filter. Step 2: Choose the chart that matches the correct fuel type and system configuration. #2. hefe055. Needle Type - ¼ to ¾ throttle. 500-1000 feet, around 60-75 degrees Keihin PWK38S Carb Stock Settings: Air Screw: 1. i run 93 with klotz technaplate at 40:1. It was made by taking Yamaha 's manual recommendations and using the density altitude calculator to correct for altitude and temperature. s spec (except the main) 165. 5 out Main Jet 155 2000 Pilot Jet 45 Needle STOCK Clip Position 2ND Air Screw 1. 5: 5GSP68 : 2: 1. It has a new top and bottom end, float adjusted, carb cleaned, reeds cleaned and adjusted. The kit comes with instructions and charts that carefully walk through the installation process and offer guidance to help get peak Description. Jun 3, 2018 · I know it "seems" super lean, given what the stock YZ250X comes jetted with, but its not. I used a 168 main, stock R1469 needle with the clip in the 3rd clip position from the top, and a 55 pilot for 70 degrees and 0’ elevation. The kit comes with instructions and charts that carefully walk through the installation process and offer guidance to help get peak Mar 1, 2008 · Jetting Chart For 08 RM-z250. Max torque was 36. Main Jet – ¾ to wide open throttle. I am going to list stock, as received, and the final jetting specs I ended up with. It has a uni filter and a FMF SST pipe w/ a FMF Ti shorty silencer, and an 11 oz. 0 in) Wheelbase: 1 450 mm (57. Turn the choke knob counter clockwise (from the fully-seated position; check the manual); this will have the effect of raising hte knob. main jet- 450. I am running the Suzuki triple taper needles, and the 2004-2008 RM250's are YZ250 engine copies so i started using my google-fu to research RM jetting. Please Note: The stock OEM jetting for your specific model is listed first, followed by our recommended jetting underneath that model. sea level. 30:1 ratio is a richer mix then 52:1. Mar 29, 2011 · The FMF jetting should be close with in 5 on the main and pilot. Hey Folks. The performance got better and better and probably peaked in 2005. Sep 23, 2011 · Main Jet: 270 Needle Jet: Q6 Jet Needle: 6FP35-3 Pilot Jet: 30. I just rebuilt my 1996 rm250 that I recently bought. Set float height and inspect float needle. air screw : 1 1/2 turn out. The Address 1930 Carpenter RD SE Lacey, WA 98503-2915 United States of America Phone: 360-350-0557 Email: tech@jdjetting. Main Jet size: 160 (starting point) Slow (pilot) Jet size: 50 (starting point) AirScrew: 2 turns out. 5 : 1. My jetting is set for 85-95 degrees, 3000+ elevation, and a tad humid. Overall Length: 2 140 mm (84. 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 Jun 29, 2009 · 2001 RM250 Jetting help. I cant get any sort of power and it is so boggy and smokes a ton Dec 6, 2019 · Not very fast. NOW, this is for 0-1500 feet, and the 70-80 degrees is fine for northern UT. 2 1/4 mix screw. Set the float level to the proper specs, an incorrect float height will affect your jetting all across the throttle range. It was probably around 70 degrees then, maybe a little cooler maybe a little hotter. I am at higher elevation probably than you guys. Proudly made in USA. Apr 19, 2021 · My current jetting on a ’18x with the Apex head, pv mod, Pro Circuit Platinum 2 pipe with r304 silencer. The catch is I’m at about 4,300- 5,000 feet in Ogden and the surrounding area. I replaced the carb boot because I pressure tested it and the boot oring was to flat to seal. com tech@fmfracing. 99 . Before you start the jet testing, Install a fresh plug. These are recommendations only, based upon our testing at sea-level atmospheric pressure, a 65-80F degree ambient air temperature, a 32:1 fuel to oil May 23, 2013 · ThumperTalk. It has little to do with jetting or premix ratios. If you follow the chart along, you will see that the stock jetting appears in the box for 70 degrees and 0’ elevation for the Main jet, Clip position, and Pilot jet. Needing help with jetting issues. All else about the motor will be stock. Feb 22, 2022 · Higher altitude equals less oxygen and that requires leaner jetting. So raising the clip to say #3 or #2 will lean out the 1/4-3/4 throttle range. Recommended Posts. Ran the bike and it runs like Feb 15, 2003 · The FMF site states that a 2001 RM250 with a Gnarly pipe should be running a 48 pilot and a 158 main. The Suzuki RM250 was a single cylinder, two-stroke motocross motorcycle produced by Suzuki between 1976 and 2011. 2024. Socal High dessert riding elevation about 3000 ft. main jet- 155. Here in az it’s hot and humid so it needs to be leaned out quite a bit. Step 4: Choose the nitrous jet listed on the same row as the desired horsepower level, under the column Mar 14, 2015 · Now the carb is jetted as seen in the picture above . Here are our jetting suggestions for your RMX250. California desert jetting. Remove the spark plug, and look deep down inside the threads, at the base of the insulator. 98 HP (41. This spring at Millville it rode excellent and the jetting seemed spot on with no noticeable bogs throughout. 75 out Main Jet 152 1999 Pilot Jet 42 Needle STOCK Clip Position 2ND Air Screw 1. A good way to see if you run enough premix oil in you fuel you see in the crankcase where the fallout of 1-2mm determinants that you are good. Mar 21, 2008 · motolink. Posted October 14, 2014. we went to the u. May 23, 2008 · Here's a quick reference jetting chart for '01-'08 YZ250's. 5 turns out, power 45, and the std slide position. 32:1 will be a leaner mix than 50:1. I looked everywhere online and the only one available is #55. on my yz250 i used to have it had like a 175 stock in it and i think i dropped it down to like a 170 or so when i put a procircuit pipe on it. If it is white or gray, the main is too lean. Feb 15, 2005 · 2-Strokes 4-ever. How much benefit from a aftermarket silencer. elevation is 768 FT. Stock: Leak Jet: 60 Main Jet: 180 Needle: NCYU – 2nd groove from top Pilot Jet: 40 Fuel Screw: 2 ⅛ out Float Height: 8±1mm No o-ring mod AP timing: stock. 185 Wow, thats way to big for a main. rd do qd va lb zj nh we iu fv