No swapping parts from head to head. I did check clearances anyway before installing. They were on the loose end of the spec, but still ok. Got everything buttoned up last night. Assembly went fine.

*Until*

Did my check and double check, turned the key, and hit the button. Turned over smoothly for 10 seconds or so. No fire as expected since the bowls were completely dry. It's a good thing it didn't fire as I started getting a slap coming from - you guessed it - the cam chain. I don't know what's wrong. My cct has no spring (broken) so I tensioned it manually and put a locking bolt in so it couldn't have moved. The only thing I can guess is that I should have rotated the motor a few times after tightening the cct to allow things to 'seat' and then retightened it. Other than that I'm at a loss. I'll be disassembling tonight - just what I wanted to do.

 

Couldn't wait. Ran home on my lunch hour and tore it apart. This morning I read the installation instructions for an APE tensioner (not what I have but same idea) and it confirmed what I suspected. My error - I set the cam timing and tightened the CCT as it sat. I didn't rotate the motor while continuing to tighten the cct screw which apparently is the only way to take all the slack out. Anyway, good news - I didn't break anything! Didn't have time to completely reassemble But will when I get home. I did crank it over after doing things correctly and no issues that I can see. I'm really hoping I get to hear an exhaust note tonight!

 

wow, great luck. Reading it my heart sank - glad to hear it all looks OK - by OK you mean you've been able to check the cam timing marks etc, and all is good I'm guessing.

 

Had to reset - it had jumped. I quit cranking when I heard the clicking. No piston/valve contact. I did notice when removing my tank that there was no fuel in either line which kept it from firing and saved a catastrophy. Thank God! Tank was nearly empty so perhaps it didn't switch to reserve? I will put it all back together and fill the tank. I know the vac line was on the correct barb.

 

Well, I've decided to wait until I have the APEs installed before going any further. I don't want to risk damage. I did find out that my petcock was switched off (bike was partially disassembled whenI got it), so once all is properly buttoned up I'm sure it will fire right up! Stupid me thought I could fabricate something that would lock the stock cct, but I don't trust it...*so*...now I have to pay extra shipping to get the APEs here Saturday. Time is ticking away on the riding season here in Maine!