Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
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As you may have read, the engine on that red GSi probably needs to come apart again after it started smoking after one lap at Combe.
My current suspicions are twofold:
The head gasket or head itself. The required torque for the head according to the Haynes manual is 65nm plus a further 30 degrees, then 30 degrees again. I did 65nm then 60 degrees because I forgot where 30 was. So they were overtightened on the second pass. As a result I didn't pass them a third time.
The cylinder bores were not honed and we used the old rings, just because we had neither a honing tool or new rings in that timescale. I've had a very kind offer of the lend of a honing tool and having seen that they're not that expensive I'm also thinking about buying one to have in stock. Obviously this needs choosing. I also need a supplier for that and the rings
Then I've got to decide what to re-use from the gaskets / head bolts which have only just gone on.
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sand-eel
Member
Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
User status: Offline
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I think there are different honing techniques for different rings, ie some may be rougher or smoother and will have different rates of honing eg up/down 1.5x a second instead of 2x a second.
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
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Yes the more I read, the more it appears very complicated. The good news is that I have an engine in mind rather than needing general advice.
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sand-eel
Member
Registered: 15th Mar 07
Location: carluke/braidwood--IRNBRULAND
User status: Offline
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Think its only about £30 for a pro to do it, with their big honing machines.
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ed
Member
Registered: 10th Sep 03
User status: Offline
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I'd say send the block in to an engine refurbishing place to get the hones done and use fresh rings, gaskets and head bolts. If you've over-tightened the bolts then they will have definitely stretched.
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Stu_22
Member
Registered: 25th Mar 02
Location: Luton
User status: Offline
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Its better for a machine guy to do it. Has it lost compression?
Was the cylinder head stripped and rebuilt
Sounds like you would of been better off with a X18XE1 
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Jakey
Premium Member
Registered: 4th Jun 07
Location: Sandbach
User status: Offline
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Give Philip a message. He did a shit hot job on mine!
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Marc
Member
Registered: 11th Aug 02
Location: York
User status: Offline
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I thought this was a rag round the track then scrap jobby?
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
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It was Philip I spoke to about the tool, he's been very helpful.
It's not getting scrapped, sold on perhaps but I want it working when I do so.
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Adam_B
Member
Registered: 13th Dec 00
Location: Lancashire
User status: Offline
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Is it not just easier to drop another engine in?
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Ian
Site Administrator
Registered: 28th Aug 99
Location: Liverpool
User status: Offline
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That is at least 150 quid. Don't really mind how hard it is, I'm learning a lot anyway.
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