Cam cover screw size?
- Thread starter LegoJeep
- Start date
OP
OP
Found the answer to my question by pulling one and comparing it to others. m6x1.0 x25mm
Not really sure why they are screws, but it could be that it doesn't need that much pressure to hold it down. Only 3Nm needed.
And you would be surprised at the temps rubber can tolerate, but I thought the heads never got much above 120
Aye, metric fine M6x25 is the ticket 
If you are going to go for SS fasteners ensure you put them in with a good gob of copperslip, as A2 (304) stainless and A4 (316) stainless are more cathodic than carbon steel and there will be more potential for the aluminium to oxidize. With those kind of socket heads they should still come out, but it's better to be safe than sorry especially the front 4 which see the most humidity & salt spray. A few thou of oxidation can easily make them a complete pain to remove.
If you are going to go for SS fasteners ensure you put them in with a good gob of copperslip, as A2 (304) stainless and A4 (316) stainless are more cathodic than carbon steel and there will be more potential for the aluminium to oxidize. With those kind of socket heads they should still come out, but it's better to be safe than sorry especially the front 4 which see the most humidity & salt spray. A few thou of oxidation can easily make them a complete pain to remove.
frank
Club Member
not for your plastic cover thoAye, metric fine M6x25 is the ticket
they,re 5mm longer
pollyp
Club Member
no, rubber melts at a much higher temp than what it'll experience normally between the head & cover, unless ur intentionally trying to overheat, overrev and destroy the engine
OP
OP
Aye, metric fine M6x25 is the ticket
If you are going to go for SS fasteners ensure you put them in with a good gob of copperslip
I already have some aluminium paste.. or does it need to be copper?
no, rubber melts at a much higher temp than what it'll experience normally between the head & cover, unless ur intentionally trying to overheat, overrev and destroy the engine
So it is rubber?
I thought head gaskets were always a number of thin metal sheets
not for your plastic cover tho
Ah, thanks for that Frank, will raid the M6x30 drawer when the time comes
Doesn't have to be copper no, basically anything which will help to stop/limit water ingress and is good for high temps. Suggested copper as most people seem to have a tube or 2 laying around and it's got great anti-seize properties
