[Healeys] Stainless exhaust manifold repair

[glemon at neb.rr.com]

These are from a Triumph, I believe they are designed to deal with the situation you have described.

I have some spares if you want to clean them up and try them.

Greg Lemon

---- Simon Lachlan <simon.lachlan at homecall.co.uk> wrote: 
> I have a 6 branch stainless exhaust setup on my MkII 3000.
> 
> I hope that I can make myself clear......
> 
> 1)      The carbs and exhaust system are on the workshop floor.....
> 
> 2)      Imagine that you're looking into the engine compartment, looking at
> the "Gasket, manifolds to head" (the silver gasket that goes between the
> manifolds and the head).
> 
> 3)      The top RHS & LHS studs are shared by the inlet and exhaust
> manifolds so they are held down into the gasket by the same bolts and
> washers.
> 
> 4)      Therefore, both manifolds need to be the same thickness or they
> don't get the same pressure metal to gasket and the shallower side will
> leak.
> 
>  
> 
> Well, mine aren't the same thickness. The exhaust manifold has been ground
> down at the tip/corner which is covered by the washer under the bolt.
> (Presumably in the manufacturing process.)  First time I put the 6 branch
> on, it was fine for about 1,000 miles then it started to blow under that
> bolt/washer. (Cooking the temperature sender pipe, but otherwise just a
> little noise. Nothing serious).
> 
> I took off the rear carb and leant the exhaust away from the engine.
> 
> I then sliced off the section off the gasket which covered that area and
> replaced it with a portion off a new gasket.
> 
> I put a half washer (shim?) under the main washer on the exhaust side of
> that stud. This took up the difference in width and all was well.
> 
>  
> 
> Now, I have it all on the floor and am looking for a better fix. Some form
> of plastic metal springs to mind.....Clean up the area on the exhaust
> manifold. Apply the gloop. Let it cure and file it flat.
> 
> Is there a product out there that will a) really stand the heat ie support
> the manufacturer's claims and b) allow itself to be filed so thin that it
> doesn't flake off???
> 
> Abro Thermometal High Temp metal....
> 
> VersaChem Exhaust Joint...
> 
> QuickSteel Thermostell Exhaust Repair Kit
> 
> JB Weld, but that's reputedly no good at very high temperatures. (Goes white
> & breaks up).
> 
> My research so far has let me to the above. I remain however deeply
> suspicious of miracle cures which come in little pots or tubes. What do you
> think?
> 
>  
> 
> Of course, I could put the half washer back on..
> 
> Or, I could have someone weld a blob onto that corner and file that flat.
> Would weld peel off if it was that thin? (.33mm+/-)
> 
>  
> 
> Thanks,
> 
> Simon
> 
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