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Old 10-05-2011, 12:04 PM
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Seized Cyclinder Head Bolts

SEIZED CYCLNDER HEAD BOLT
cyclinder head gasket blown.Engine still to ticking over with slight miss. Removed head but found some bolts seized. Wd 40 does not help as i cannot soak bolts. Is there a way this can be loosened without damaging aluminium head. thanks
tnana.

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Old 10-05-2011, 05:19 PM
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Are the bolts seized in the alum. head or the alum. block? If it's the block the bolts are probably "galled" which means that the threads are locked into the alum block material and they are a beoch to get out. You can use a torch to heat the block but obviously you have to be VERY careful with how much heat is applied....just enough to loosen the bolt......trail and error and of course keeping your fingers crossed. Then use a good anti-seize lube when putting it back together

Last edited by 327NUT; 10-05-2011 at 05:25 PM.
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Old 10-05-2011, 05:20 PM
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Quote:
Originally Posted by 9ltnana
SEIZED CYCLNDER HEAD BOLT
cyclinder head gasket blown.Engine still to ticking over with slight miss. Removed head but found some bolts seized. Wd 40 does not help as i cannot soak bolts. Is there a way this can be loosened without damaging aluminium head. thanks
tnana.
Which bolts are seized? How did the head come off with seized bolts?

Bogie
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Old 10-05-2011, 05:46 PM
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Quote:
Originally Posted by oldbogie
Which bolts are seized? How did the head come off with seized bolts?

Bogie

X2. I've never seen a head come off with a bolt still thru it.
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