Thermal Coatings On Turbo Manifolds, Housing And Down Pipes

[Rezlo]

Just wondering what you guys think of thermal barrier coatings on turbo motors, mainly tubular turbo manifolds, exhaust housings and down pipes,

External coatings are great like the Jet-hot and Cermakrome stuff from techline, what interests me more is the TLHB internal coatings, some guys swear by it, others say the risk of it coming off and hitting the turbo arnt worth the pro's in heat reduction and faster spool up.

What you think?

[Dale FZ1]

Whether it's applied internally or externally, I don't think it matters. They both should result in a reduction of transfer of heat from/through the item being coated.

For the difficulty (and extra cost they may want to charge) of applying the internal coating, I can't think of a reason why I would do anything other than external application for the items mentioned.