how hot are wrapped headers?

Ross · Post by **Ross** » Mon Jan 14, 2008 10:44 pm

1. The said material has been subjected to the *xxxx test* and has shown excellent heat resistance properties. :lol:

Post by **Stuart** » Mon Jan 14, 2008 10:51 pm

Dunk's gonna make his bonnet out of cardboard to save weight :lol:

Go on Dunkinator..........why has this particular issue been destroying brain cells today?

Ross · Post by **Ross** » Mon Jan 14, 2008 11:00 pm

I poped round to see Duncan today. Jeesus.. He's been busy with the TA car

Looks awesome! :twisted:

George @ DCY · Post by **George @ DCY** » Mon Jan 14, 2008 11:19 pm

Thats no good dunc, you have to run Toyo's :lol:

duncan · Post by **duncan** » Tue Jan 15, 2008 5:55 am

Ross wrote:I poped round to see Duncan today. Jeesus.. He's been busy with the TA car Looks awesome! :twisted:

fpmsl :lol:

Its just I was testing a material that I think might make a good front splitter and undertray with a heat gun to see how it would fare in close(ish) proximity to the headers and wanted to know how the heat would compare. The heat gun would probably be 200C

ScoobieWRX · Post by **ScoobieWRX** » Tue Jan 15, 2008 9:17 am

^^^
:pmsl: Any excuses for not winning 2008 time attack will be a bit wooden after this. :lol:

I hear......
Ceramic coated headers,downpipes etc... are only warm to the touch shortly after having been used in anger due the the coating both on the inside and outside being super insulative. Coated is the way to go but nowhere near as inexpensive as wrapping.

Christian and Beccy · Tue Jan 15, 2008 12:33 pm

Reducing engine bay temps is a great idea, but you need to also take some time to consider the effects of keeping the heat in. I have heard stories of dropping valves etc due to high temps.

Ian (DaOne) · Post by **Ian (DaOne)** » Tue Jan 15, 2008 8:09 pm

what sort of heat wrap will you be using? how much over lap etc

i have just covered my down pipe in this stuff.

it is the xtreme one
http://www.thermallogic.co.uk/page6.html

very easy to put on, and after a hard price you can slap it with your hand, and it is hot to the touch when you do this, but not enough to burn. and can hold your hand very close to it with no probs.

i used a 50ft roll,with around 1/4 of it over lapted.
it covered the hole decat down pipe, and about a 1/4 over wraping on the top of it.

hope this helps mate

(edited for text type .. tut tut

)

duncan · Post by **duncan** » Tue Jan 15, 2008 8:14 pm

It does - thanks.

RPS13 · Post by **RPS13** » Tue Jan 15, 2008 11:01 pm

Finally found the notes from my old single seater. Wrapped exhaust coming into the pits was c80- 85 deg C. Running on the dyno we were seeing much higher, but very poor airflow compared to in the car. Without the wrap on the dyno we could make the super thin wall exhaust so hot I swear it went translucent!

I know the airflow and engine are very different to your scoob, but I hope it gives you an idea of numbers.