39pwk carb modifications

[86waterpumper]

I got my keihin 39 pwk carb in, and have talked to others about theirs but I'm trying to figure out how to mount the stupid thing. I can probably get the back of it into the stock airboot, but wouldn't mind using a k&n slipon, and doing away w/ the airbox all together. What model k&n slips on like on the harley bikes, etc. Also, a couple other issues, I bought a rad valve for the intake, and it's for the 86 atc250r, so that means that it won't fit on the carb either. The rubber piece w/ the doulbe clamps will come off though, so is it possible to purchase a bigger boot for the end of the rad valve from Boyesen? Or do you need another rad valve altogheter Also, I bought a twist throttle for the 250r, it is a Motion pro, and the throttle calbe and cap won't fit the 39pwk, and the carb I've got came off a kx, so it's got the screw in rubber plug on the end of the throttle cable. Maybe I can hunt up a cr or a kx late model twist throttle. Any help would be greatly appreciated! :hail:

[markb]

what a mess!
i would call boyseen i'm pretty sure they make that intake for the bigger carb. you must have some wide open area to use a 39mm.
running the carb with a k&n only will make the motor pretty loud beacuse the air box helps to dampen the inlet noise

i would call motion pro about having them make a throttle cable for you. they can adapt almost anything and the cost isn't to bad, i've used the service before
mark

[86waterpumper]

thanks markb, for anyone wanting to know, boyesen sells just the rubber boot, (RB1) to fit the larger carb for 3 bucks, so I've ordered it, and motion pro is who I emailed yesterday, and they make a calbe for 28 bucsk to tie into the existing thumb throttle. I plan to use the carb everywhere marb, new bikes come w/ 38's and 39's, even the 125's come w/ a 38. Plus I'm raising the compression, and putting on a racing pipe, so hopefully it won't be too big.