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[JamesV6CDX]

Oil control ring James 

Get yourself a piston ring clamp ( http://cgi.ebay.co.uk/Snap-on-Piston-Ring-Clamp_W0QQitemZ110415424035QQcmdZViewItemQQptZUK_Hand_Tools_Equipment?hash=item19b545aa23&_trksid=p3286.c0.m14&_trkparms=65%3A12%7C66%3A2%7C39%3A6%7C72%3A2140%7C293%3A1%7C294%3A25 ) or split an old oil can and use with jubilee clips (don't laugh used this set up to re-ring tuned 2 Lit (overbored) MGB B-series engine!!).

Really easy to fit rings - once you've done a couple James 

Thanks for the encouragement mate

It's like everything else

2.0 cambelt kit - scared stiff until I did one - and now done about 20+ for others

Same applies to V6 kit...

Same to head gaskets....

I'm sure once Ive done rings once, it will be a walk in the park second time around... 

[Bourne]

If you decide to go down the route of changing the rings, I'd slip a new set of big end bearings in while it's apart.Won't cost much but will make it more worth the effort.

[Marks DTM Calib]

Rings are easy enough to fit......sump off is the hardest part!

What state were the bores in?

[JamesV6CDX]

Rings are easy enough to fit......sump off is the hardest part!

What state were the bores in?

They actually looked OK Mark - you could see the hone marks on them!

[Bent valve]

Does it have excess crankcase pressure? what happens if you run it with the oil cap loose/off?

[JamesV6CDX]

Does it have excess crankcase pressure? what happens if you run it with the oil cap loose/off?

Quite a bit of blow back, with cap off...

[Bent valve]

Does it have excess crankcase pressure? what happens if you run it with the oil cap loose/off?

Quite a bit of blow back, with cap off...

Unless the breather system is blocked solid, it does sound like worn rings/bores. Easier to do than a v6 top end rebuild though IMHO

[Pete Elite]

 Just a thought James but if it's a Turbo could it be that at sometime the Turbo has gone and filled the exhaust with oil which wasn't cleaned out properly as you seemed pretty sure that it was the stem seals and the bores looked OK :-/.