KX Riders
Maintenance & Technical => KX500 Aluminum Frame Conversion (AFC) => Topic started by: Likeabigbozz on February 19, 2017, 01:51:44 PM
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Hi guys
I'm building a '94 kx250 engine in a '08 crf250 chassis and I have some questions.. so I was hoping you guys can help me...
Does is matter if my engine leans a little bit more forward then it would originally in the kx frame? If I do this everything just fits better. Does the engine would still run good and as long as normal? And how about steering and big jumps. I remember reading about this but that was a while ago. I can also use a eccentric bushing so the weight of the engine is about 2 mm lower and the angle is more like original. Any thoughts?
Is it better to put a teflon(?) Bushing in the motor mounts to reduce vibrations? Or maybe some Tylon? Because vibrations are not good for the engine right?
I have a perfect '91 casing with a '94 cylinder, gearbox, clutch and ignition. I want to hone/replate the cylinder and buy new powervalve parts for this one or is the '98 cylinder better? And what about the gearbox? I want to build a smooth engine with the best bottom end power possible. I also have a boyesen radvalve. a pwk powerstriker carb and a hgs pipe + muffler. Any ideas?
And what about the filterbox. Should I just use a cr250'00 rubber+filtercage and buy a crf-cr conversion kit on ebay?
Sorry for all the questions but I really want to do the whole engine swap and rebuild thing as good as possible.
Thanks for your time
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Engine angle is not going to matter as far as how the engine runs. The Engine is never level when riding. I doubt it would have too much effect on the handling of the bike either,.I ve seen engines with tilted cylinders vertical cylinders and everywhere in between.
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Keep an eye on how the chain draws over the swingarm, I like to have them clocked down in the front if possible.