Here are some old concepts in the 2 stroke world that have been “updated”: 1) The carb needle and the main jet effects don’t overlap, they totally control the jetting for their designated range of throttle opening. I think that oversimplified belief was designed to help out the simple minded...

So my 1988 lt250r has lost compression. It takes forever to crank it and I kick it with ease. I've had problems with the head gasket sealing before so I'm wondering If that is it or if its due for a rebuild. Once I get it cranked it runs good but it still feels a little low on power

New addition to the tool box.....Have fun..... http://www.metaltechproducts.com/Chain_Calculator.htm

i was doing a rebuild on my engine and i accidently cleaned my marks off the gears on my balance shaft. can anybody post me a link or a pic of how i need to align it again with TDC? thanks

Looking for a works pipe or factory pipe and tail pipe for a 90 YZ105. Any ideas? I checked Pro Circuit and FMF. It seems like they have a pipe but not the tail pipe. I am rebuilding this from the ground up and want it to be sick!