[601HP]

I have an iron block aluminum head 427 side-oiler. Lots of cam lift and duration, and 12.0 compression. I live in the northeast with substantially high levels of humidity all year.

My primary header pipes have been wrapped for at least 7 years. I did this because the Jet-Hot coating did not provide enough engine bay and driver compartment heat reduction. Now as a result of the wrap I can quickly wipe my hand across a pipe, even after a hard run, and not burn skin. This stuff provides a tremendous reduction in heat.

Two years ago I re-wrapped all the pipes and didn't see the slightest evidence of rust, and absolutely no indication of negative impact to the Jet-Hot coating, interior and exterior.

The Jet-Hot interior/exterior coating has most likely prevented the rusting that will occur on unprotected mild steel primaries.

David