rrobis' IVgen

[RattyMcClelland]

I paid £900 for my hytech header and i wrapped it with thermo-tec heatwrap.

[NafemanNathan]

If you're worried that heat-wrapping your manifold will increase the temperatures inside it so much that it will crack the welds and melt your manifold then your manifold is destined to fail anyway

I've had two Mugen Manifolds that I heatwrapped now, both were/are fine

Not going to decrease your under bonnet temperatures by a great deal though, just keeps the gases hotter to keep them thinner and more flowy

[rrobis]

If you're worried that heat-wrapping your manifold will increase the temperatures inside it so much that it will crack the welds and melt your manifold then your manifold is destined to fail anyway

I've had two Mugen Manifolds that I heatwrapped now, both were/are fine

Not going to decrease your under bonnet temperatures by a great deal though, just keeps the gases hotter to keep them thinner and more flowy

manifold is JASMA certified, so it should hold up. i'm worried since it is used and yes, the creacking is one thing, other is in case i'm doing some repairs and some oil/brake/other fluid accidentally drops on wrapped manifold, it could catch on fire since oil soaks in wrap and since heat is bigger, then extinguishing may be a problem?
wouldn't want to remove header every time i'm changing oil or doing something else in engine bay that could spill something flammable on header

or this is my tinfoil hat working now?

any other suggestions how to decrease under bonnet temperatures?

[NafemanNathan]

Yeah it's not going to crack. Like I said, you'd have to have a dodgy manifold that was destined to crack anyway. You may be slightly speeding up the process, but a quality exhaust manifold isn't going to crack from wrapping it in heat-wrap. It's the speed in which it heats up and cools constantly that causes cracking. Being the heat-wrap is also going to slow the cooling speed it negates that concern.

Also the heat-wrap itself isn't flammable, so it'll only burn off the fluid, not start a fire. Although it will obviously be difficult to mop up any mess made on the heat-wrap and it'll look bad to. The simple solution to that would be to throw a sacrificial rag over the manifold when you're working on the car (When it's cooled obviously ).

[rrobis]

Yeah it's not going to crack. Like I said, you'd have to have a dodgy manifold that was destined to crack anyway. You may be slightly speeding up the process, but a quality exhaust manifold isn't going to crack from wrapping it in heat-wrap. It's the speed in which it heats up and cools constantly that causes cracking. Being the heat-wrap is also going to slow the cooling speed it negates that concern.

Also the heat-wrap itself isn't flammable, so it'll only burn off the fluid, not start a fire. Although it will obviously be difficult to mop up any mess made on the heat-wrap and it'll look bad to. The simple solution to that would be to throw a sacrificial rag over the manifold when you're working on the car (When it's cooled obviously ).

ok thanks for sharing. probably will go with wrapping the thing

[Merlin]

On my 4G race car have a Fujitsubo manifold that is heat wrapped. It sees high temps that are sustained longer than what you get on the road and the Fujitsubo is fine. It likes to go though gaskets though.


http://www.ludegeneration.co.uk/post170041.html#p170041

[NafemanNathan]

We don't need to see a picture Allistair!!!

[damon]

Oh yes we do , dam that looks sexy

[rrobis]

New toys incoming

[RattyMcClelland]

http://www.ludegeneration.co.uk/post170041.html#p170041