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crossflow rocker cover leaks
irvined - 10/4/10 at 10:14 PM

Hello,

I've got an alloy rocker cover on my xflow, it leaks. I've tried using the cork gasket, cork gasket with the three different types of gasket sealer I have, and with just gasket sealant alone. It always leaks, sometimes just a drip, others a steady stream.

Its driving me slightly mad, i just can't seem to get a proper seal, what is the knack to doing this? Which gasket sealer should I use?

Chippy - 10/4/10 at 10:53 PM

One that stops the leak, Cheers Ray

Fatgadget - 10/4/10 at 10:59 PM

Evostick!

Carefully glue the gasket to the rocker cover,smear a bit of oil on the other surface.Job done.
Take care not to overtighten the screws..DON'T USE ANY SEALER!!



[Edited on 11/4/10 by Fatgadget]

prawnabie - 10/4/10 at 11:00 PM

If you are using an alloy cover you shouldn't use the cork gasket. There is a specific paper gasket for the ally covers.

Fatgadget - 10/4/10 at 11:04 PM

quote:
Originally posted by prawnabie
If you are using an alloy cover you shouldn't use the cork gasket. There is a specific paper gasket for the ally covers.


With my method you can use any type of gasket on any ally cover.

rusty nuts - 11/4/10 at 08:14 AM

quote:
Originally posted by Fatgadget
quote:
Originally posted by prawnabie
If you are using an alloy cover you shouldn't use the cork gasket. There is a specific paper gasket for the ally covers.


With my method you can use any type of gasket on any ally cover.


True , it will hold the gasket in place but cork is porous and will always leak! Burtons do a better type of gasket that doesn't tend to leak like cork, also it might be worth checking that the rocker cover gasket surface is flat on a surface plate or sheet of glass

Fatgadget - 11/4/10 at 11:00 AM

quote:
Originally posted by rusty nuts
quote:
Originally posted by Fatgadget
quote:
Originally posted by prawnabie
If you are using an alloy cover you shouldn't use the cork gasket. There is a specific paper gasket for the ally covers.


With my method you can use any type of gasket on any ally cover.


True , it will hold the gasket in place but cork is porous and will always leak! Burtons do a better type of gasket that doesn't tend to leak like cork, also it might be worth checking that the rocker cover gasket surface is flat on a surface plate or sheet of glass


Aye! What's wrong with a tinny winny bit of oil leaking on your chassis rails?

irvined - 11/4/10 at 05:31 PM

I'm all for a bit of corrosion protection, but i think its a bit excessive right now

How tight is too tight for an alloy cover?

prawnabie - 11/4/10 at 07:03 PM

The problem is it that that mating surface on the alloy rocker cover is smaller than the surface on the head. When you do the cover up it pinches the cork gasket and doesnt seal. If you place the cork gasket on the alloy cover you can see where it doesnt match.

Fatgadget - 12/4/10 at 11:35 PM

quote:
Originally posted
it excessive right now

How tight is too tight for an alloy cover?


Its a bit like when you are making out with the missus mate!

Nah seriously.. Just feel when the bolts are pinching.And tighten them diagonally.

I had all sorts of xflows and pre-xflows ,twin cams and bdas with ally covers ..never was an issue with oil leaks...


Maybe your ally cover is warped?