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Old 02-13-2012, 02:57 AM   #23
Scooby Newbie
Member#: 200596
Join Date: Jan 2009
98 Forester 3.0R


I wanted to try making my own 3-1 merge collectors, I have to say once you have a good jig they are very easy.

I welded up a piece of angle iron into a 90 degree square, welded another tube to that with a nut welded to hold the 13 degree elbow used for the merge collectors

all that i had to do once the jig was set up was to rotate the tube 30 degrees one way and then 30 degrees the other way for a total 60 degree cut.

3 pipes finished ready to weld

tack welded collector

and finished with a small transition on the end it expanded from 2" to 2.5"

so i made one more of those and was ready to move on to the actual headers
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