Valve stem oil seals

[jimmcf]

can these be replaced without taking the head off the car??? if so any ideas how??


Thanks


Jim

[20Vcqdriver]

can these be replaced without taking the head off the car??? if so any ideas how??


Thanks


Jim

Watched an Audi dealer do it once on my old KV engined GT many years ago. Basically pressurised the relevant cylinder then had a special tool (once cam removed) to press down on valve spring seat to enable the collets to be removed. Another tool to pull off the old seal, then on with the new, spring and collets back in and move on to the next one.

[jimmcf]

thats what i remember too can this be done on 20v heads??