Thread: TD5 Stainless Steel Exhaust Manifold studs

Take one of the old studs to someone like Coventry Fasteners & tell them what you want - with a bit of luck they should be able to match it in SS
Cheers,
Alex

Don't forget the anti-sieze or the corrosion can cause problems.

Its not the stud properties that are really the issue, its more the manifold design...

Originally Posted by Tombie

Don't forget the anti-sieze or the corrosion can cause problems.

Its not the stud properties that are really the issue, its more the manifold design...

Mike,

What is wrong with the design?

I was talking with someone who was of the opinion that the manifolds are used to soon after they are cast and this was partly trhe cause of the warping (don't know how true this is).

Cheers,

Franz

I think Tombie's point of corrosion / galvanic reaction is a valid point which Dave (Blknight.aus) also raised when I asked the question of which studs to use. I was looking at the following LAND ROVER TD5 UPRATED WURTH MANIFOLD STUDS X10 AND COPPER NUTS X10 | eBay which are high strength studs and copper nuts.

My thoughts are that if there is any warping of the manifold, the nuts will give way rather than the studs. Naturally a good coating of copper anti-seize and spring washers would be a good idea.

I would appreciate any thoughts on this.

Cheers
Ian

has anyone with 10mm SS studs had a problem with manifold warping?

I have refitted the factory studs, Sliced webbing, Jetcoated and run warm

Since done some serious towing, lots of warm runs and not a lick of a problem.

The issue is Cast vs Alloy expansion.... And bracing the webbing really messes the flex of the manifold up

Tombie, I am interested in your comment about 'slicing' the webbing. Is that just using a cutting disc to run a cut into the webbing to separate the different manifold ports?

Cheers
Ian

I havent used stainless studs, (yet) but have dewebbed the manifold and planed it 20,000 klm ago, new standard studs and genuine gasket. leaking at no 5 found 5000 klm ago. pulled off manifold & found warped again, linished and another new gasket and a smear of maniseal around no5 and now I can see the telltale carbon leaking out again.

I wish you could get a proper exhaust manifold gasket like the old holden reds used to have with a layers of perforated metal laminated with some asbestos, i bet that would fix the problem.

Having said that I wonder how close rover individual v8 exhaust gasket would go to fitting ?


or even buying the material and punching them out myself

i might just have to get one of those apt fabricated manifolds.


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