exhaust gaskets

[Concrete-crusher]

Hi I fitted new exhaust gaskets and a new ss manifold about a year ago. I have only done a few short runs in that time , but at least 2 of the gaskets are blowing oily residue.

Is it better to re-do the job with an exhaust paste , or are there thicker gaskets available.

I got these from Paul Matty.

Thanks Steve

[William2]

Hi Steve,

I recently also fitted a new SS manifold and had to remove it to take my engine out and noticed that 2 of them showed sign of not sealing very well. When I reassemble it I'm going to use high temperature silicone exhaust sealant and hope that fixes it.
Don't forget to attach the exhaust Y piece before doing up the manifold nuts. Regards, William.

[john.p.clegg]

I had to take the file to my s/s manifolds to finish the job,been good for years...home made copper gaskets.

John

[englishmaninwales]

Steve
As William suggests, I found fitting the standard gaskets with high temperature silicone exhaust sealant solves the problem.

[fatboyoz]

Hi Steve,
Here are some pictures of the air cooled VW exhaust gaskets I used. Fitted 6 years ago.
They are composed of two thin sheets of metal with exhaust gasket type material in between. The two metal pieces are folded over, on the inner circumference, to complete a fully sealed circle. They also have a crush land on either side to aid in sealing.

https://www.google.com.au/search?q=vw+b ... UDRrBrM%3A

https://www.google.com.au/search?q=vw+b ... ZRLFxfM%3A

http://www.jbugs.com/product/111251261B.html

I think the actual part number is 111 251 261 B. If I recall, they are inexpensive.

Cheers,
Colin.

Hi I fitted new exhaust gaskets and a new ss manifold about a year ago. I have only done a few short runs in that time , but at least 2 of the gaskets are blowing oily residue.

Is it better to re-do the job with an exhaust paste , or are there thicker gaskets available.

I got these from Paul Matty.

Thanks Steve

[alexblack13]

Problem will be the manifold flanges. Check these for decent alignment and FLATNESS. They must be flat or even SLIGHTLY convex.

Thicker gaskets and sealants should not be required on the twin cam engine. Get the manifold fit correct and flatten the flanges carefully and all will be well. By all means use some UHT gasket as belts and braces.

Hope this helps guys..

Take care.

Alex B ....

[englishmaninwales]

Alex
I agree with you that your suggestion is the correct long term solution; using sealant is really a bit of a short term solution.
But the tubular manifold needs to be removed to check and fettle the flanges, which in an S3 is a right pain. I don't know about a Plus 2.
However, as a fix until prehaps the next engine removal, I considered it is easier to undo the exhaust manifold nuts, loosen the clamps on the Y collector, remove the studs to allow the gaskets to be removed, and then reassemble with sealant providing a 100% solution.

Malcolm

[alexblack13]

Hi Malcolm, Guys...

That Z tek +2 on my sig' never happened.. Long ish story that involved ferries to Holland and a return trip carless..
Somewhat disappointing to say the least. Hey ho!

My Sprint would have a similar if not the same manifold to the series 3 cars? I think so.. The Sprints manifold when I checked it was neither a good fit or flat. It took some fixing needing quite a lot of heat and the use of a spare Stromberg head I had. I got there eventually then carefully used my belt linisher to flatten off the flanges. These were well dished. The final flattening was by careful use of a smooth file. I did try to set it up on a surface grinder but not successfully...

A lot of work but I recon worth it.

One of the +2's I did have (a few moons ago) had the habit of producing exhaust leaks at the manifold to head gaskets and silicones etc did not ever last too long. It had to be fixed too eventually.. The car produced what sounded like a loud clicking noise when under throttle. Wondered what it was at 1st....

Hope it works ok for you though bud.. You may be fine with that fix. Time will tell. And it will depend on the flange flatness.

All the best.