evening all can you tell if my YB valves are worn from these pics











tbh they dont look worn to me but then i dont know what i`m looking for...Lol


ta

 

little chips or cuts would let compression down but they look ok , just grind them in before reffiting to give a good tight seal

 

cheers mate

i`m not refitting the head just selling it on now as got another one after being told they were worn so will sell it stripped,though a couple of bits are missing now

 

DON'T grind/lap them in, very old hat, and not anywhere near as good as a decent cut with a serdi seat cutter in a machine shop, took something to convince me as well, but serdi is where it's at.
They don't look especially thin at the edges, look very closely at the edges of the exhaust valves, if still unsure just get seats cut in head and valve seats done, could do with being 3 angle anyway, a lot better for not that much outlay, the seats on your valves look very wide.
tabetha

 

wide seats... is that a good or bad thing Tabs?

Tbh i was surprised when told they were worn as it made 297 `oss & 300 torques on a stage 3 with a 96,000 mile engine with a t3 thats never been rebuilt that i know of

 

They were obviously sealing well, wide seat is not the best thing in the world.
tabetha

 

cheers tabetha

Pm sent chap