Omega Owners Forum
Chat Area => General Car Chat => Topic started by: JamesV6CDX on 12 July 2009, 17:56:54
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Well seeing as the forecast wasn't quite accurate, and we have had beating sun today, I removed the head from the Astra.
Not a bad little job. No major snags really. I removed the exhaust manifold, popped cambelt off, took all the intake rubbish and connectors off - and removed the head along with inlet manifold as one. Then removed inlet manifold with head on the floor.
I looked into the exhaust valve ports - all dry. Loads of white deposits on no4 exhaust valve stems.
Looked in inlet ports - bl@@dy hell - looks a bit wet! The valve seats look like they're covered in oil
Hopefully a simple stem seal job will fix this - fingers crossed ::)
What does anyone think about a tad of skimming, given that it's LPG? 8-)
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Oh - I think it will run better on LPG when it's back together too. Found a good old split where the feed pipe comes out of the vaporisor.. ::)
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Just to add - the bottom of the valves on no1 cyl all have loads of white deposits on them.
Does this mean that cylinder has been running lean?
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What colour were the stem seals fitted to these engines in the factory?
I always thought they were green.
The ones in this car are red - did VX ever use red seals, or has this beast been apart before.... :-/
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What colour were the stem seals fitted to these engines in the factory?
I always thought they were green.
The ones in this car are red - did VX ever use red seals, or has this beast been apart before.... :-/
Original heads in my 2.6 have red seals
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The red seals are the shite ones that fall off
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The red seals are the shite ones that fall off
Well the 4 that came out so far, were unusually easy to remove - came out with normal pliers very easily.
Interestingly, the valve stem went up and down with no grip at all, they are shot to hell...
Pot 1 is the worst, loads of black gunge on the valve seat areas... these are the valves that are covered in white deposits too, I reckon it's due to oil burning in the cylinder...
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Oil burning wont cause white deposits