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big bore
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  1. Suggestions
    New to forums this is a first. But I have a 1988 trx250r I am wanting to build a drag bike that I can also ride around. Looking for suggestions as far as big bore kits stroker cranks carburetor swing arm length. I am use to banshees. But I’m wanting build a single cylinder set up thats no one...
  2. For Sale
    $3100: FREE radiator + exhaust w/ engine purchase!! $650 DISCOUNT VS. MY LAST POST Free radiator and exhaust, because I need you to buy my engine, and my engine(any big bore) needs these. I'm literally throwing go-fast goodies at you now...what more do you want from me? Cause I swear to god...
  3. Engine and Transmission
    Hello everyone! Just picked up a 2005 paul turner pc 2000 340 powervalve cylinder. I was wondering if anyone knew where i could find a piston rather than going through duncan. Does anyone know who manufactures their pistons? I was also wondering if it is necessary to run an aftermarket ignition...
  4. Lounge
    I want to buy a 310 kit probaly from ESR, because they are so afordable. I know not everyone is a fan of ESR, I dont want to get in to that. I just purchased a 39mm Mikuni carb from ebay for this project. I really want to know if i need to get a bigger intake and boot. Any advise for performance...
  5. Lounge
    So I am planning my next build and have yet to purchase anything or really become set in stone on what I want. I do know what I want it for though, I want to build a bike that is only to be ridden on the sand and I want it to have massive power. Originally I was thinking that a 330 would be a...
  6. Engine and Transmission
    Hello guys and gals hopeing to find help i got a 86 trx 250r with esr 330 kit cool head,I replaced the orings 3 times now thinking i put them in wrong but after the 3rd try still getting antefreez spitting out the exhaust not a lot just enough to see on the case below the exhaust flange, it is...
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