Thermal exhaust manifold wrap

[geza]

Anyone have any opinion as to the value of insulating (protecting) the surrounding water lines from the underside of a 2004 996 - to protect them from the radiant heat from the exhaust headers?

I'd be interested to learn if anyone in the forum has used thermo shield wrap for the exhaust manifolds to contain some of the heat.........?

[P2C4]

Motorcycles use exaust wrap tape to increase performance and control heat. I've not used it on any of my Porsches.

But, like the above post, I'm interest in whether anyone has tried exhaust wrap tape, and what their take on it was. Did it increase performance? How much cooler was the engine compartment? Was it worth it?

[Ubermensch]

Motorcycles use exaust wrap tape to increase performance and control heat. I've not used it on any of my Porsches.

But, like the above post, I'm interest in whether anyone has tried exhaust wrap tape, and what their take on it was. Did it increase performance? How much cooler was the engine compartment? Was it worth it?

I'm not sure you'll gain much power if any from this, but if you do decide to go with thermal insulation I'd suggest you look into coatings rather than wraps. Wraps tend to trap moisture and result in rust issues in the wrapped areas. There are plenty of well respected coating companies that specialize in this sort of thing. I would imagine the biggest benefit would be to protect the surrounding components (especially plastic parts like the ignition coils) from the heat and subsequent failures.

Shawn

[Alan C.]

Putting a wrap on your headers is a good way to shorten their life.

[teeerex]

.. not sure you would gain anything tbh - unless you wrapped the headers, cats and exhaust - they are all so close to each other and ALL in the engine bay so you would be insulating the heat in one place just for it to be released further down ... For front engine cars then yes you will reduce heat in the engine bay but can't see it being effective in a 911 ... :-(

[P2C4]

Thanks.

Well, reduction of heat is what I'd really like to achieve, if possible. Any added power would be a bonus, not a goal of this project.

[geza]

There is another solution.......anyone who has - or has had a Harley Davidson should know that there are a multitude of exhaust shields that attached to exhaust manifolds......they come in all sorts of lengths etc., and since I asked this question long ago, it could be a reasonable solution. They allow moisture to move past the manifold - negating the issue of rust and corrosion, they come in many lengths - so fit in critical areas should not be that much of an issue.........they are a little expensive though - chrome plating may or may not be the look under the manifold.