Head gasket replacement
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Hints, tips and guides for repair and modification - the FAQ section on the main website is worth checking first for information relating to common faults and technical help. Useful posts and guides will be added to the FAQ http://www.sciroccoregister.co.uk/scirocco-faq
- walkinginperu
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Head gasket replacement
I'm going to (finally) sort the head gasket on the GT this weekend. When I replace the head, do I need to use new cylinder head bolts, or can i reuse the old ones?
Anything else i should be checking is in stock with gsf before the weekend?
Anything else i should be checking is in stock with gsf before the weekend?
- walkinginperu
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Re: Head gasket replacement
I thought they were stretch bolts so need to be renewed when the head was taken off.
Mk1 78 Scirocco GLS 1.6 FR, weekend toy.
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- Risocco
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Re: Head gasket replacement
Yeah me too, esp if they are the original 20 odd year old ones. I'd change them for brand new ones Ben personally.
Apart from that, is it time to do the timing belt and tensioner? Makes sense while you at it bud
Alex
Apart from that, is it time to do the timing belt and tensioner? Makes sense while you at it bud
Alex
1983 GL
1986 GT
1994 Corrado VR6
1986 GT
1994 Corrado VR6
- walkinginperu
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Re: Head gasket replacement
OK, new bolts it is. Cambelt and tensioner already purchased and ready to rock!
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Re: Head gasket replacement
I know people who reuse head bolts on some pretty high performance engines (one of them a 300+ bhp 16v turbo). Officially they're single use, but you can get away with it.
Don't buy head bolts from GSF - they're made from soft cheese.
vwspares.co.uk sell decent ones, or there's always VAG.
Don't buy head bolts from GSF - they're made from soft cheese.
vwspares.co.uk sell decent ones, or there's always VAG.
1992 Scala ABF - SOLD
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Mk1 Classic Touring Car Project...slowly does it
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1989 Scala track toy. Dormant
1986 GTX - Lunar mileage but still a good un
Mk1 Classic Touring Car Project...slowly does it
1984 1.6 GT Project. 69k In progress
1.6GL. 2 Owners, 60k. SOLD
1.6 GL - 100k miles -Back on the road!
- Brunty
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Re: Head gasket replacement
They aren't stretch bolts, but never a bad idea to replace the originals.
Brunty
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Re: Head gasket replacement
Clarifying that, 8v bolts aren't stretch, as far as I can tell. The ones I just took off the car are 10.8s, which is not a stretchy material.
16v head bolts ARE stretch bolts though, just to avoid anyone assuming 16v ones are the same.
16v head bolts ARE stretch bolts though, just to avoid anyone assuming 16v ones are the same.
1992 Scala ABF - SOLD
1989 Scala track toy. Dormant
1986 GTX - Lunar mileage but still a good un
Mk1 Classic Touring Car Project...slowly does it
1984 1.6 GT Project. 69k In progress
1.6GL. 2 Owners, 60k. SOLD
1.6 GL - 100k miles -Back on the road!
1989 Scala track toy. Dormant
1986 GTX - Lunar mileage but still a good un
Mk1 Classic Touring Car Project...slowly does it
1984 1.6 GT Project. 69k In progress
1.6GL. 2 Owners, 60k. SOLD
1.6 GL - 100k miles -Back on the road!
- walkinginperu
- Posts: 257
- Joined: Thu Apr 09, 2009 3:14 pm
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- Location: Leamington Spa
Re: Head gasket replacement
OK, so I'm still in the middle of doing this, but I've been taking loads of photos, so I'll post something when the damn things running again in a week or two! 14 hour days at work and getting dark early is not a good recipe for fast car repairs! So far I've cleaned up and refurbed the head that i got from Risocco (cheers alex ) and detached everything holding my head on the car (apart from the bar steward manifold clamps). The thread inside my exhaust clamp tool stripped itself spectacularly, so I had to drill and tap the inside and make up a new bolt/threaded bar thingy that goes down the centre. Hopefully will work now but I won't know until the weekend when i give it a try. The good news is that the new head is pretty straight. I stuck it on the CMM at work ( i love my job) and the surface variation is 0.059mm across the whole surface, and Haynes says 0.1mm is allowable so should be fine. I was worried i was going to have to get a fly cutter on the milling machine and skim the bugger! Depending on how well the car runs with the new head on, I may think about doing some work on the old head just for the experience. Anyway, sorry for the ramble, pics and even more waffle to follow