cometic headgasket
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From: watFORD
Just bought one of these for my saph, anyone fitted one ? any tips ? its the group a metal one, ive herd its a good idea to use some sealer
cheers paul
cheers paul
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From: isle of wight
Metal headgaskets are very good IF you have two flat surfaces. It requires your head and block to be very true as there is little room for play. With a fiber gasket, you get a little room for error. I was recommended by tabetha on here to run a yb 0611 group a gasket. I run 400+ and it has coped no problem at all. This is what I would recommend.
i had one, used a recommended sprayglue, didnt seal, leaked from the oil channels. had a skimmed block, head wasn´t but measured straight. changed to o-rings and grp a gasket instead. might have sealed if i had retightened the bolts some people say.
I heard the same thing about about multi layer and group A metal ones. The two surfaces must be completly flat. I went for the YB 0611 Group A Victor Reinz HG as this is much more forgiving if the two surfaces are not completly flat. Many people run the YB 0611 with 450+ BHP with no problems.
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From: watFORD
This is what i've done 
Torque in sequence up to 60 lb ft, then 80,100, then finalise at 120lb ft.
If you're using the ARP stud & nut kit tap out the holes to clean up the threads and use a little bit of engine oil on them when torquing
Torque in sequence up to 60 lb ft, then 80,100, then finalise at 120lb ft.
If you're using the ARP stud & nut kit tap out the holes to clean up the threads and use a little bit of engine oil on them when torquing
Copied from Cometic website;
Cometic Multi-Layer Steel (MLS) head gaskets go on dry because they are coated with a sealant. Each MLS head gasket is coated with a .001" thick viton rubber that is bonded to the outer stainless steel layers. Adding an additional sealer can hinder the performance of an MLS head gasket.
I did this in one way if I remember correctly
Cometic Multi-Layer Steel (MLS) head gaskets go on dry because they are coated with a sealant. Each MLS head gasket is coated with a .001" thick viton rubber that is bonded to the outer stainless steel layers. Adding an additional sealer can hinder the performance of an MLS head gasket.
I did this in one way if I remember correctly
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