02GF74
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| posted on 30/1/07 at 02:04 PM |
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crossflow cylinder head bolts
anyone know what size these are? (1/2 in. UNC be my guess). (they are 2 different lengths)
Is there anythihng different about these bolts that say 8.8 bolts bought from a fastener place?
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David Jenkins
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| posted on 30/1/07 at 02:17 PM |
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Not sure what size they are, but they are 'special' - they get cranked up to a fairly high torque, so they'd need to be HT. Also,
only the ends are threaded, and the bodies help with accurate location.
Have a look at Burton's website - it's worth paying the right amount for something so essential for the engine.
David
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ed_crouch
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| posted on 30/1/07 at 05:46 PM |
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May as well put ARP studs on it while youre at it.
Wouldnt be much more expensive than the boggo bolts.
Ed.
I-iii-iii-iii-ts ME!
Hurrah.
www.wings-and-wheels.net
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Memphis Twin
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| posted on 30/1/07 at 06:17 PM |
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Can't remember off-hand what size the bolts are, but original Ford headbolts are very strong high-tensile affairs. Don't discount them.
8.8s from a parts factor are NOT good enough. The originals are more like 12. You don't need expensive ARP bolts.
Chris.
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02GF74
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| posted on 31/1/07 at 08:26 AM |
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quote:
Originally posted by ed_crouch
May as well put ARP studs on it while youre at it.
I know this has been discussed, maybe not here, but what is the advantage of studs compared to bolts?
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