So I just replaced the head with a new 07 yfz440 head and just replaced and upgraded to hot cam stage 1 I put cam caps on they rotate fine I rotated the motor without cams and it moves freely. Soon as I tighten the can chain and out everything back together it locks up when I want to rotate the motor with a socket it’s set at tdc as well then it skips teeth like it dust wanna fully rotate what’s my issue I replaced the chain too and tensioner already  3 new valve intake valves exhaust are good  need help    ..read more

Can anyone help identify and give a price for this atv ..read more

Anybody knows how to repair this small hole it’s in the clutch cover of a 03 Honda Rincon 650  ..read more

Wanting to know if it’s possible to interchange an 05 head with an 07 seems to be a cheaper head  ..read more

Wanting to know if it’s possible to interchange an 05 head with an 07 seems to be a cheaper head  ..read more

I replaced the timing chain on my 08 z400 and now it ticks a little more than it used to ..read more

Doing my first hare scramble in a few weeks and was just looking for any tips or info riding my 2020 yfz 450r pretty excited  also be bringing my camper any info on supplies or what I should bring is appreciated  ..read more

I have a 2007 grizzly 350 that bent a valve about a year ago and I took it apart and it sat for a long time and I recently put a new cylinder new head new rings new spark plug new carburetor new starter relay and new valves in it and I got it to start and idle for about 5 minutes then I tried hitting the gas a little and it died and I’m not sure what could be causing this  the intake snorkel is took off right now I’m not sure if that’s the reason or not  ..read more

 identity of this Suzuki? All the pictures I have so don’t ask me for more apparently it’s a 2008      ..read more

Yamaha RZR 2-stroke. Its got a lot of these small rubber blocks between the cylinder and head cooling fins, 4 different patterns in different locations, plus a rubber-backed steel plate that bolts up against the fins on each side. The arrangement isn't symmetrical so some of the blocks have presumably gone missing. Took them off for cleaning. Wondering if I should put them back. I suppose IF I get it running (which may never happen. Intake rubber boot seems to have shrunk so I may not be able to attach the carb) I can wait and see if the vibration is bearable. I wondered if there was any kn ..read more