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I found its a common issue on some ASR joints after some use. But never found an answer besides "try again" with another set. Mine are brand new. 3 of the 4 are way too tight. I tried cycling them with chain lube, and allowed it time to dry. It was a bit looser before the lube dried up, then...

I'm bored with the bad weather, and thought I'd share on this forum. I've gotten a ton of info searching here. 2007 Raptor 350. Original engine condition unknown. I immediatly swapped a rebuilt 87/93 warrior assembly. Destroyed the cam and head, swapped a rebuilt '87 head on with diy port work...

I'm going all in on seeing how much power I can get on a stock bore size. Raptor 350 with a 11:1 piston, ported head, FCR 37 on a custom full bore intake adapter, HMF muffler. Got a knock-off Ninche cam, currently. Looks to be similar to a Hotcams stage 1. I ride full throttle, everywhere. I...

Tearing into rebuilding a '87 head. The intake valve mating surface seemed too large. Measured 2.1mm, when .9-1.1 is spec. Upon further looking, the intakes 45 degree mating surface is lopsided. Measures 1.8mm on one side, and 2.8 on the opposite. Clean cut with no hammering effect visible.On...