The V8 Owners Forum -

Because of under bonnet heat problems I have had to wrap my manifolds.

Now, the car will be stripped down over the next few months and resprayed/rebuilt.

I was considering coating the manifolds with ceramic because it looks nicer, is easier to maintain and doesn't rot the manis.

How much of the exhaust should be done though. If I only do the manifolds, I still have heat coming up from the down pipes. If I do the down pipes/front Y section, will it cause the rear section to get a lot hotter?

Is it a good idea to do the whole exhaust?

Is it advisable to do the inside as well as the outside?

How much cooler will it keep the engine bay?

Where is the best place to get it done?

Are the aerosol products any good for a DIY attempt?

I have never done anything like this so know nothing

Hi
go as far as you can afford, up to the first box and certainly until the exhaust is out the engine bay.
Mike

I like the look of this from demon tweeks http://www.demon-tweeks.co.uk/products/ ... de=NIM1706

If you can find someone to bake it for you it would be a lot cheaper than getting them done properly... Apparently you can hold the headers whilst running once coated...

Hi Richard
Have had my fanimolds coated inside and out.
Was told to expect 15%reduction of heat under bonnet and between 3 to 5% power gain.
Was not cheap in the chrome finish but you can have it done in many different colours with black being the cheapest.Any help if i take some photos of my exhausts?
You could try and do it yourself but think that it would be better to have done professionally as you have a warranty with it then.
Let me know about the photos ok
Cheers
Paul

A friend had his GT40 set done
In and out

total cost was about £360

And yes it makes a huge difference in the under hood temp - you can almost touch his when the engine is running - on mine with stainless it blistered my arm from about 2 inches

Ian

Richard
Camcoat of Warrington coated my manifolds and they can be found on the net or on 01925 445003.
It is also worth mentioning that they can coat combustion chambers,pistons and valves amongst other internal parts.
Ian has given you a good idea of pricing in his post.I think mine cost me about £270 but that was back in the late 90s.
I think that you would be smart in having as much of the system as possible coated but of course this comes down to personal budgets and Camcoat will price out by the foot for the exhaust system but a set price for the manifolds.
Just think ,no more flaking scabby exhaust paint that is over promised and under acheives.

gelmonkey wrote:.Any help if i take some photos of my exhausts?
Cheers
Paul

Yes please Paul

I'll probably go the black route, but pics would be great

Cheers

Richard

Thanks to all, it will be a time before I get to this bit but I will be reporting any advantages

Hi Richard sorry they are a bit big.My wife has loaded these up for you as I'm a pleb when it comes to puters!
This will give you an idea of what to expect from Camcoat if you choose to go to them for the coating process.
Regards
Paul

Thanks for that Paul

I have been looking at their web site.

I think I might just go for the black ones, they look nice.

Richard

No problems mate.
cheers
P

topcatproduction wrote:I like the look of this from demon tweeks http://www.demon-tweeks.co.uk/products/ ... de=NIM1706

If you can find someone to bake it for you it would be a lot cheaper than getting them done properly... Apparently you can hold the headers whilst running once coated...

Looks good, but can anyone really say from experience that it is as effective as the professional treatment? If so, I could be tempted...

As for polishing it, bugger that! lol. too many tight corners... plus I was planning on a tri-y which which would be even harder

crayefish wrote:

topcatproduction wrote:I like the look of this from demon tweeks http://www.demon-tweeks.co.uk/products/ ... de=NIM1706

If you can find someone to bake it for you it would be a lot cheaper than getting them done properly... Apparently you can hold the headers whilst running once coated...

Looks good, but can anyone really say from experience that it is as effective as the professional treatment? If so, I could be tempted...

As for polishing it, bugger that! lol. too many tight corners... plus I was planning on a tri-y which which would be even harder

I use the stuff from Demon Tweaks on my racing sidecar exhaust, it did not work too well for me. Then again I did not have an oven to bake the stuff, I just hung each part of the exhaust up on wire then poked the end of my heat gun down one end of each primary and let is blast hot air up each pipe for an hour.

My RV8 has been done with the same stuff in the pictures above, it seems very good. (You can't really touch the pipes when the engine is running as they are still quite hot but they are cooler than just plain steel, that's for sure! )

as for the exhaust wrap... obviously one of the probs is that they can rust the manifold if they get wet (especially considering mine is an off roader) but would that be a prob with stainless? i know under some conditions they can corrode

Poor quality stainless will still corrode/rust, I wouldn't have thought wrap on an off roader would be a good idea whatever as you dont want mud smoking away all day under the wrap! I hate that smell when you come out of a mud bath and you have it smoking away!

Pete how did you apply the demon tweeks stuff? Is it more the case that it isn't pretty but does the job or is it just not great? Maybe if they supplied it in matt black as well it wouldn't matter if it didn't go on very well from an asthetics point of view!

Im going for the black once i get my finger out and make the new manifolds with bigger primaries,