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TR4/4A tr4 headers-sizing

trfourtune

Jedi Knight
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help!!!
i am designing (designed routing already) my headers for my tr4. does anyone have a set of racetorations or cambridge rally headers thay they could measure for me so i can compare dimensions or "borrow" /ubbthreads/images/graemlins/devilgrin.gif theirs. 6000 rpm max rpm so they should not be a full blown race header for an engine that runs up to 8000.
my dimensions so far are:38"lgX 1.5"OD primary's,14"lg X 2.0625"ID collector to a 2.25" exhaust system. i want max torque at 4500. 89mm bore.
rob
/ubbthreads/images/graemlins/nopity.gif /ubbthreads/images/graemlins/square.gif /ubbthreads/images/graemlins/confused.gif
tgif /ubbthreads/images/graemlins/thirsty.gif /ubbthreads/images/graemlins/thirsty.gif /ubbthreads/images/graemlins/thirsty.gif /ubbthreads/images/graemlins/cheers.gif
 
also, the cambridge header is the ex4500 i would like numbers on if anyone has this.
rob
 
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