Quote:
Originally Posted by golfguy
Eugene
thanks for the write-up and the pics on this and your teaser post.
I'm wondering why any of the 911 turbo kits don't require header wrap. my previous modded (non-porsche) turbo cars (late 80's/early 90's) all came with header wrap. i seem to remember the theory was to keep the heat in the header in order to maintain higher exhaust gas velocity for quicker turbo response.
|
glofguy-
Good question. We don't wrap, but we use Swaintech Coatings for some of our Audi header applications. Their product is fantastic, so we had a set of our 997TT headers done to see if there were any worthwhile benefits.
There was zero difference in performance compared to the uncoated headers. Spool time was also the same.
Like Gene has said, on a vehicle with much longer plumbing, this would be a worthwhile mod. Coatings and wraps also work well on cars where hot pipes are in areas where a double wall header design was used from the factory. They can provide a great thermal barrier.
The headers on these cars are dangling from the bottom, so need to worry there.
In our professional opinion, no coating or wrapping necessary.
Hope this helps.