Exhaust wrap

[martinlaw]

I am going to wrap the exhaust manifolds and was wondering whether to order one or two rolls of 50feet x 2" tape.

Has anyone elso done this and how much tape did you use.

Cheers,
Martin.

[Thevet]

You'll probably need two rolls, I just squeezed it out of one but would have been happier with two. Don't forget the stainless lock ties, of which you will need probably 12, and some of those will need to be long enough to go round the 4-into-1 collector section.

[d3dna]

Wetting the wrap before you wrap the exhaust helps the application and tightens up the wrap when the water evaporates.

[martinlaw]

Thanks for the advise.

I will order two rolls.

[kylemrushall]

martinlaw said:

Thanks for the advise.

I will order two rolls.

A waste of money and time imo.....

it is proven to be dangerous and it looks bloody awful

[Thevet]

Never given me any problems on the 4 SBCs I've had, and certainly has reduced the number of burnt hands and arms, ceramic coating might be ebtter but I know nothing about it.

[bluesatin]

I used it before and it destroyed the exhaust over time. The heat change the structure of the metal and it became brittle and cracked.

[martinlaw]

From what I understand, wrapping a cast iron manifold is not a good idea, but a manifold made from quality tube or stainless steel is fine.

Advantages:
Less chance of burning hands etc.
Considerably cooler air entering the air filter (main reason for wrapping) which increases horsepower.
Keeps general engine temps down.
If fuel, for whatever reason, sprays on the manifold it far less likely to ignite.

Disadvantages:
Cost and time to fit it.
Looks.

ANY OTHER SUGGESTIONS!!

The manifolds are wrapped on my Sport and have never had any problems.

[bluesatin]

I think somebody else this years back on another car. Mine was a custom stainless manifold. I would go down the coating route

[highflyer]

Would suggest ceramic coating looks better and lasts longer but for about £400 a little pricy, probably only needed on a Canam / spyder though, as the rear clip is closer to the exhausts, Gtr /Sport wouldn't think it was necessary. Co in Manchester do it called camcoat 01925-445688 or www.camcoat.com hope this helps.

[GTRCLIVE]

Have been told a Couple of times now that if your going to wrap the manifolds they better be at least 1.5mm thick wall tubing and a good grad of stainless. The factory headers on the SBC where 419 Stainless (Magnetic and rusts over time) and only 1.2mm thick... So would recommend they have just coating on them....

[kylemrushall]

martinlaw said:

From what I understand, wrapping a cast iron manifold is not a good idea, but a manifold made from quality tube or stainless steel is fine.

Advantages:
Less chance of burning hands etc.
Considerably cooler air entering the air filter (main reason for wrapping) which increases horsepower.
Keeps general engine temps down.
If fuel, for whatever reason, sprays on the manifold it far less likely to ignite.

Disadvantages:
Cost and time to fit it.
Looks.

ANY OTHER SUGGESTIONS!!

The manifolds are wrapped on my Sport and have never had any problems.

A mate had his manifolds and the first couple of feet of his exhaust wrapped and his car caught fire and it was a total loss....

The investigation concluded that the wrap was to blame as it had small gaps in it which gave extreme heat releases and one of these hot spots ignited the fibreglass, the gap was estimated at 2mm square. The heat has to escape somewhere!!

I would not touch the stuff its an accident waiting to happen imo!! As Russ says you have plenty of space around the engine in the GTR so it requires improved airflow to cool i think better flow from and through the side pods would be my first priority.



I think if fuel is spraying around your engine bay, spraying on the exhausts is only one of your problems. Duct air to your air filter,

[qwicksylva]

Hi,

I agree with Kyle, wrapping exhausts is dangerous. The problem is that small gaps develop in the wrap, either because it was missed initially or through vibration over time. The heat focusses on these caps creating a higher temperature there than there would have been if it were spread over the whole exhaust system. Next thing fire and insurance claim... Coating might be better but I wouldn't risk it, route your cold air inlet from the side of the car.

Rich

[bluesatin]

Loads of us have had the ceramic silver coating on the outside and black on the inside- makes an amazing difference (can touch the exhaust a few minutes after a hard run) and has lasted for 4 years no problem. I the person that builds engines for Lucky P crazy and others and he also mentions that the heat breaks down the structure of the steel and goes brittle.

[ROWDYRENAULT]

Ive had ceramic coat on my renault r5 turbo headers for many years. The car runs 17 lbs of booast and lots of exhaust temp. Headers are made out of 321 s/s and they and the coating look great. Forget the rap. Lee

[Slipper99]

Wraping my Manifold, turbocharger and connecting pipes....

Has anyone got experience of Zircotec (see www.zircotec.org). Ive been thinking of wrapping my manifold and so on but these guys seem to do a thick ceramic coating. They say they do F1 cars and the like so I guess its good stuff. Any idea of cost?

[GtrSimon]

My exhausts are been coated at Zircotec at the moment, they are doing a ceramic coating with a silver finish will post pics when done. very expensive I hope its worth it.

[V8 Vum]

I have been looking at this also and camcoat and zircotec are the ones I looked at.

Seems that Camcoat is a spray-on and much cheaper, but my only thoughts are how resiliant it is?

Does it chip off over time? what have others found?

The other Zircotec, use a plasma coating device which is far more expensive, and if memory serves me around £1300+ for the exhaust system last time I asked.

Interesting that they claim up to ('up to' is important wording) 30% reduction in heat though! ..thats a lot of dough for 30%!

Not sure about CamCoat, but I understand less that 1/2 the price.

Time to hear from you boys who have REAL experience of either?


Keith

[generalpetres]

Wrapping the exhaust is a bad idea unless you like wasting money replacing headers and such. Headers can only take so much heat before they start cracking, adding tape will only insulate the heat and ruin your headers.

[Slipper99]

Guys, just been doing a bit more diging.

There is some interesting stuff on the Zircotec news page (www.zircotec.org/page/news/3).

There is an item (near the bottom of page) saying that Koenigsegg selects Zircotec ceramic exhaust coating. I think this is the car that was on Top Gear last year.....its awsome, the fastest road legal car, but should be with half a milion price tag. Must produce st loads of heat though. Also, there is good item and pics of Andy Frosts Drag Car with link to part Zircotec coated (I saw this at the NEC PistonHeads Live Show in Jan.)

Just wonder whether they sell the same coating for these cars as they do to us other pistonheads. I'm thinkin i might give them a call.

GtrSIMON - look forward to seeing those Pics. What are they chargin and for what?

Edited by Slipper99 on Thursday 28th February 01:36

Edited by Slipper99 on Thursday 28th February 01:37