So I guess coating 'em not only looks the best but performs the best too.

[/img]

Stock ported and coated Series 2 EM'*.

I have the cross-over for my TOGs heat wrapped. Seems to work fine in keeping the throttle body cooler and I haven't seen any change in underhood or engine temperature.

Cheers,

A little off-topic, but who painted an M90 and valve covers? I take it we're looking at a strictly show engine that doesn't care about heat retention? (vaguely on topic)

The heat saturation is internal; it can even happen with coatings too.
This is an excerpt from Techline:
I have known the owner, Leonard, for over 15 years. He was one of the principal engineers that developed the high tempearature coatings and adhesives for the Space Shuttle tiles. His first love was cars, so he left the aersopace business and was the first one and the pioneer to introduce these coatings to the automotive industry. Jet-Hot did not even existed at the time leonard introduce the coatings to racers.

I don't suffer any heat saturation of any kind, my car is tuned to run 19* of timing in 95*F heat with 91 octane fuel with an ECT of around 180*F.

I agree that thermal barriers are the best solution, however in my case, any many others I expect, I only have nickel coating on the headers. Since I have no radiant heat shileds or thermal barrier, wrapping the cross-over is an effective solution in keeping the temperatures that the throttle body is exposed to as low as possible without any adverse engine cooling or detonation problems.

Cheers,

You live in a much cooler climate, Foghorn. It probably suits you well. Pdad and the Bullet may benefit from it as well for that reason, other than their yearly trips down here. What are the effects on a crossover that heats and expands, then retracts at a lower rate than the two manifolds during extreme heat cycling?

Only in winter, in summer it'* quite hot here and the 95*F temps I referred to can persist for weeks on end. I have done tuning sessions for many hours at those temperatures, and I'm not exactly gentle with my car, and those are the specific conditions I had in mind while making my comments.

Cheers,

I can confirm both comments

Im going to add about 12" of wrap to the cross over right below the tb along with a heat shield. Lots of guys with slp headers wind up wraping the downpipe for sound deadening and have so for many miles.