Joined
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4 Posts
Hi,
My name is Ron and I am new to the TRX250R.net forums, so I thought I would post a question that hopefully you guys can help me with. I recently purchased a Keihin 36mm PJ carb from eBay, thinking it was the stock 34mm carb (the item description said it was). Anyway, I plan to use the 36mm carb on my TRX250R, so my first question is, what do I need to make it work? I did a caliper check on my stock carb and my new carb, and as far as I can tell, the only difference is that the end that goes into the intake manifold and the engine is about .080" or (surprise, surprise) 2mm bigger. The end that connects to the airbox is the same, as far as I can tell. So I'm thinking that the only thing I need is a bigger intake manifold boot. Is this correct? And if so, do you guys know where I can buy one? My second question is about the jetting. I ran a 155 main and a 48 pilot with the 34mm carb, and the bike ran great. My general question is, will the 36mm carb require different jetting than the 34mm carb? For instance, maybe a bigger main or a different pilot? And if so, could you guys give me a ballpark estimate on how much to go? My 250R has a FMF Fatty pipe and Power Core II silencer, and a K&N air filter. Everything else is stock except for a .010" over piston. Thank you all for your time and I appreciate your help.
My name is Ron and I am new to the TRX250R.net forums, so I thought I would post a question that hopefully you guys can help me with. I recently purchased a Keihin 36mm PJ carb from eBay, thinking it was the stock 34mm carb (the item description said it was). Anyway, I plan to use the 36mm carb on my TRX250R, so my first question is, what do I need to make it work? I did a caliper check on my stock carb and my new carb, and as far as I can tell, the only difference is that the end that goes into the intake manifold and the engine is about .080" or (surprise, surprise) 2mm bigger. The end that connects to the airbox is the same, as far as I can tell. So I'm thinking that the only thing I need is a bigger intake manifold boot. Is this correct? And if so, do you guys know where I can buy one? My second question is about the jetting. I ran a 155 main and a 48 pilot with the 34mm carb, and the bike ran great. My general question is, will the 36mm carb require different jetting than the 34mm carb? For instance, maybe a bigger main or a different pilot? And if so, could you guys give me a ballpark estimate on how much to go? My 250R has a FMF Fatty pipe and Power Core II silencer, and a K&N air filter. Everything else is stock except for a .010" over piston. Thank you all for your time and I appreciate your help.
