Ceramic manifolds....

[jeffsy]

All

I remember a thread on this a whole ago but the search facility is down a the mo...

Could anyone who has done this please let me know the whys and wherefores? Im thinking - who did it, cost (if you dont mind) and observations now that you have lived with it for a few months.

Im weighing this up vis a vis jacketing of some kind

cheers

[antonyj]

One of the companies that do this are

www.camcoat.u-net.com/

I believe Tim at ACT can also get them done for you through this company.

[cinquecento]

Howdy!!

Ceramic coating looks a lot better than a wrapped exhaust.. but it still gets quite hot..however I've nothing to compare it against.
Need to be careful as the coating can chip if hit say, but dropping a screw driver or something similar..

[barreti]

I'm surprised Ballistic Banana hasn't popped up and given his comments to help you oh sheep loving one!

Earth calling Simon....

[Guillotine]

excellent, do it.

doesn't reduce running temp much, but 5 mins after a full out run i can touch the manifilds! but still cant touch plenum (if i had one )

kills heat soak when hot...MAJOR prob with griff/chim.

a must, 'bout £500 for three bits (mani x2 and y piece)

andy
tvrmonster

[ruaricoles]

Wrapping the exhaust is the best way of keeping heat and radiation down, and is simple to do yourself, but can create a few issues; firstly, any small gaps left become hotter than they would otherwise be (and on a multibranch manifold it's almost impossible to cover everything), secondly the wrap traps moisture and accelerates corrosion unless it's all stainless of course. Probably not an issue if the car lives in a garage and comes out on sunny afternoons, but if it constantly gets damp you might find wrapping your manifolds causes them to fall to bits.

Ceramic coating is more expensive (and you can't do it yourself), not quite as effective at keeping heat down, but looks tidier and doesn't lead to other problems.

If I ever have my manifolds off for any reason I'd certainly want to get it done.

Ruari

[GreenV8S]

I'm not convinced by the moisture/corrosion problems that people predict. Unless you have rain water dripping onto the exhaust, I don't see how it can be a problem. When the engine is running, the exhaust gets hot enough to boil water off within a minute, and it simply won't stay damp. Does water drip onto the exhausts on Chimaeras/Griffiths? That might mean it stays damp for long periods when it's parked, which might be a different situation. But I ran my V8S with exhaust wrap for years and the better part of a hundred thousand miles. There is a small amount of surface corrosion but nothing unusual. It did suffer from a couple of cracks around the collector, but this is quite common on unwrapped exhausts too.

[shpub]

I've had two manifolds disintegrate with exhaust wrapping. It is a common problem unless the manifolds are a very high quality stainless.

[Pies]

I had a different problem with exhaust wrapping.I had wrapped the manifold and Y piece this pushed heat bact to the engine via bare metal internals as it could not escape ,thus causing a drop in power.I have since remove the wrapping from the manifolds and all is sorted

[macdeb]

Had mine done back in March. Still look as good now. I'd do it [well, I did]

[Guillotine]

GreenV8S said:

I'm not convinced by the moisture/corrosion problems that people predict. Unless you have rain water dripping onto the exhaust, I don't see how it can be a problem. When the engine is running, the exhaust gets hot enough to boil water off within a minute, and it simply won't stay damp. Does water drip onto the exhausts on Chimaeras/Griffiths? That might mean it stays damp for long periods when it's parked, which might be a different situation. But I ran my V8S with exhaust wrap for years and the better part of a hundred thousand miles. There is a small amount of surface corrosion but nothing unusual. It did suffer from a couple of cracks around the collector, but this is quite common on unwrapped exhausts too.

Pete,

the problem is. is that the manifolds run along side of the top of the wheel but below the line of the wheel arch. spray from the wheel soaks the exhaust wrap (if not at full temp) then sits on the manifild rusting it away. so a short journey from the office / back home can get the wrap soaking...doesn't dry of totally...then rusts out the pipes.
IME
andy

[Boosted LS1]

I wrapped two turbine housings and was quite alarmed when I took the wrap off. The cast iron was definately flaking, in chunks!

I never wrap again, I'll use a heatshield and an air gap.


Boosted.