Hi, Cyrille....
manufacturer's will automatically void their
warranty on a "wrapped" header for reasons already stated to you. So for
reduced heat (along with greater than
"un-coated" header life), "coated" is the way to go.
A good source for both header and exhaust
system diameters along with advice and info on type, "Long Center Branch" (LCB)
or "3 into 1" is given in the Exhaust Sections of Vizard's bible on Tuning
Series
A motors and are based on expected power
output of your unit, assuming it is a Series
A and not a 1500 (sorry, I forget which one you've got!).
Cap'n Bob
Basic Frog
Cap'n. Bob '60 :{)
|