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jetting

  1. 86 TRX 250R - 42 or 44 mm Mikuni flat side jetting concerns

    Intake and Fuel
    Hello Fine folk. Bought a 86 250r couple weeks ago. Had been sitting for 4 years. Full FMF exhaust, ported, shaved head, no airbox lid, k&n filter with pre filter, 42 or 44mm mikuni flat side, stock bottom end Fresh fuel, cleaned carb and checked reeds (not stock reeds, not sure what they are)...
  2. $1500 trx.....

    Project Quads
    whats up guys, my name is Nick, I'm from Cincinnati, Ohio. Currently living in Phoenix, Arizona attending MMI, I've always been a 2-stroke guy, and have raced atvs, since I was a kid: 984317_10203707537794317_7268172553733672375_n by Nicholas Stanford, on Flickr But have not been on one since...
  3. having a problem with the piston melting any clue??

    Engine and Transmission
    I have a 1987 trx250r thats ported by SCT its 68.5 mm bore with the 86 piston ct mid pipe force v reeds cool head 22cc dome oversize radiator and inline cooler a trx head gasket spacer plate 38mm air striker carb ESR airbox eliminator kit stock crank. Its been checked for vaccum leaks and all...
  4. Need help with jetting issues 330PV ESR

    Lounge
    I have recently purchased ESR's 330PV kit for my R. I was set a 38mm carb. Jug has a mid port. I was sent a few different jets. I need to know what size main jet to use and needle position. Any thoughts or information would be helpful. Thanks
  5. Help With Carb. Please!?

    Intake and Fuel
    I have a 36mm PJ With a 190main and a 42 pilot. Im running 32:1 with Yamalube 2r at the coast. I have my air screw 2 turns out. and i have messed with the idle. it has been just cleaned out with carb cleaner and it still wont IDLE. Anyone Know What Could Be The Problem? I just got a fresh top...
  6. jetting getting dialed in

    Intake and Fuel
    jetting troubles..i have a fresh 330 pro ported and flowed, with trx 5 centermount bdt eliminator kit, and a 40.5 taper bored carb, that was off of a dif motor now im trying to get it set up for mine, its jetting was all out of whack so I started with a 185 main 52 pilot and dgh needle, it was...
  7. 1987 Honda TRX 250r Jetting?

    Intake and Fuel
    So i recently went out and got a 1987 Honda 250r Four-wheeler with a 310 kit ESR and i ride on the coast. The guy i bought the bike from just had the whole engine rebuilt with the 310 kit added along with the rebuilding. So i took it out on the first ride in the dunes of Oregon where i ride, I...
  8. Never jetted before, got some plug chop pics. Would like some feedback.

    Intake and Fuel
    Just finished putting the top end on and trying to get my jetting right. This plug chop was done in 4th or 5th gear wot. Yes, did too many to remember for sure. 86 bottom end with long rod, 66mm bore (thin sleeved when I got it) unknown porting but definately had some work done to boost ports...
  9. Any ideas?

    Intake and Fuel
    This is what I got: 1.1988 TRX 250R 2. 330 LRD LONGROD 3.40MM AIR STRIKER CARB 4.AIRBOX ELIMINATOR KIT 5.FTZ FATBOY PIPE WITH ESR CENTERMOUNT SILENSER 6.HINSON CLUTCH 7.HINSON SIDE COVER WITH THE HINSON QUICK CONNECT 8.ESR IGNITION 9.NEW MAIR PLASTIC WITH HIGH FLOW SCOOP 10. BOYSEN REEDS...
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