On EXTREME applications (boats, endurance racing, low ignition timing/high boost) and ***Assuming there is sufficient clearance*** between the down-pipe and the valve and coil covers we recommend installing these
External Link: http://www.amazon.com/Heatshield-Products-130614-Inferno-Inconel/dp/B002UPL64W
The trick is to install stainless stand-offs between the down-pipe and the heat shield. Direct contact with the down-pipe itself will eventually make these shields as hot as the downpipe surface without an airgap between the pipe and the shield.
The important thing is that your insulation goes as follows:
External Link: http://www.amazon.com/Heatshield-Products-130614-Inferno-Inconel/dp/B002UPL64W
The trick is to install stainless stand-offs between the down-pipe and the heat shield. Direct contact with the down-pipe itself will eventually make these shields as hot as the downpipe surface without an airgap between the pipe and the shield.
The important thing is that your insulation goes as follows:
Down-pipe
|
Airgap
|
Heat-Shield
|
Airgap
|
Coil Cover
|
Airgap
|
Heat-Shield
|
Airgap
|
Coil Cover