YotaTech Forums - View Single Post - Broke down in the '86 yesterday...gathering input

thook · 01-12-2008, 07:43 PM

A few days ago I ran a compression test. Pulled the valve cover off and backed the valve adjusters all the way out so the valves would close. Tested #1 cylinder and zero compression. I don't know about the other 3 because I stopped there. No point really I figured. Time to tear it down. I've got most of the front end off so far. The rest will be this coming week.

The timing chain jumped enough so that the distributor sits at 2 o'clock now instead of 11 which would be terminal #1. So, the timing is waaaaay off. Undoubtedly there are bent valves, but what cause this to happen...the chain jumping....is still unkown. I had a dream I broke a cam bearing. No damage at all to the cam gear. Something must have seized throwing the chain off.....and breaking the starter. Cam bearing would explain it. We'll see once the head is off and I dismantle it.

Right now I'm looking for gasket kits. I have the front end already covered...just need the rest. Engnbldr, most likely. I'm reusing the headbolts as they are not TTY and have never been touched before. I didn't realize those forkers were so big...wooh! I'm also going to replace all the vac lines and small coolant hoses 'round the intake.

More to come....for those interested. I'll post comments and details once I know more. This is a learning experience, for sure. Never seen this happen.