Cylinder off.....

[SyncroS8]

Originally Posted by IT

The plot thickens.

Removed some more stuff out of the way for access, bought a new compression tester, and tested all cylinders, and both banks.

I have 2 cylinders off, both opposite each other on seperate banks, both reading a value of around 4 bar, compared to the 9/10 bar on the healthy cylinders.

Defo an engine swap / breaker now, but what are the odds of having two cylinders broken..... ???

I have seen the oil squirter break off and score the bore on a 32V. Not common though.

I'd see if you can borrow an endoscope if you can and have a look down the spark plug hole.

You can replace pistons without having to drop the whole engine but by the time you've pulled the sub-frame off to get to the sump, setup an alternative support for the engine, pulled the heads off (exhaust etc), it might be just as easy to pull the engine.

I'm very glad that I carried out a compression test on my S8 before parting with my cash

I feel for your mate although you did buy it knowing that it had engine problems.

I'm still interested in the LPG setup

MG

[SyncroS8]

Good to see the car today and confirm that the compression on cylinders 2 and 7 were very low... A little bit of oil in the bores confirmed rings and cylinder issues rather than valves.

Never heard such a sick sounding V8.

MG

[IT]

I thought it was 2 and 6...... ?

Yes, very sick, but thanks for your input, and still quicker than most things

[SyncroS8]

Maybe I'm getting the numbering of the cylinders wrong...

Cylinder 1 and 8 are at the crank pulley end?

MG

[IT]

1 and 5 i believe at crank pulley end.

I traced cylinder 6 from the wiring colour of the coil packs... cylinder 2 was my unknown, but we seem to agree on