How easy is it to bugger a valve?

ebouwman wrote: I'd already swapped the shims on the suspect valve so I can't be sure how big of a change, but it looks like it gained about 0.03 mm or therabouts. I turned the engine by hand though and looks like I'm pissing air out of that valve on the compression stroke... so ya...

@Roadflyer the cams were good in relation to eachother, just not in relation to the crank.

Never thought about it but can the piston top get damaged ever?

It Takes a running engine to damage a piston.

Use the air leakdown test and listen for which valves are bent through

the intake and exhaust. Then take off head, out those valves, check the

seats, guides, new seals in, lap, pressure test them ALL>

nads.com wrote: Use the air leakdown test and listen for which valves are bent through

the intake and exhaust. Then take off head, out those valves, check the

seats, guides, new seals in, lap, pressure test them ALL>

That may have been good advice yesterday morning...

#1 and 4 were getting weak compression and when the head came off I saw that 1 and 4 had lots of carbon build up so we kept on disassembling and saw that the 1 and 4 pistons didn't have offset rings while 2 and 3 where offset correctly which may explain the carbon build up a bit.

So we may have gone overboard, but we've got quite a long winter here so I've got till may before I even think about putting it on the road.

If the cams were out how could the valves have touched?

Nvm. I misread that