kirky

Just got a cometic multilayer head gasket 1.3 thk and was just wondering if the head needs tightening more than standard settings???
Any one had any probs with these gaskets???
P.s for a 2wd saph!!!

nik t

standard settings mate, 90foot pounds in stages.
welseal around the gasket,stops oil leaking which can sometimes happen
on multi shim gaskets.

kirky

Whats this welseal stuff n where do u get it???

jon@work

iTrader: (5)

Strictly speaking, this is not the correct method for torquing down a head.

According to the manual :

1. use a little oil on the underside of the bolt heads and a bit on the threads
2. torque to 45-50 Nm
3. tighten a further 180 degrees
4. check that when a torque of 110Nm is applied that none of the bolts move

There are variations of the "correct" method above, but the most important thing with fitting a cometic gasket is that the head needs to be flat (ie skimmed), as does the block (which isn't good enough if it hasn't been decked).

kirky

Cheers jon! have had the head skimmed n block checked but have u heard of this welseal stuff????

jon@work

iTrader: (5)

if the block has been decked (NOT just checked) and the head skimmed, then nothing else should be needed

tabetha

If it is the newer COMETIC it will have sealing edges around the oil holes as standard anyway, and they do seal properly the new ones, the old ones did let oil out very often.
The SINGLE PIECE METAL ONE IS ACE, from VICTOR REINZ, ie oe kit maker to LAMBO, FERRARI< ASTON MARTIN etc etc.
tabetha

kirky

Well ive just bought it from woodford garage so im gathering it is the new type!!

tabetha

Yes should be the new one from them as they have a high turnover and old ones are probably long sold by now.
tabetha
ps COMETIC ALLOY FOAM gaskets very very good and anti creep and reusble too, for inlet side of things.