View Full Version : Fabricating my Swingvalve to exhaust
Xtrempickup
07-15-2007, 06:57 PM
I need to fabricate my swingvalve for my tranny buster. I found the parts i need to do it to my downpipe, but i have questions about size. If i have a 2.5in flange, do i get a 2.5 in diameter pipe to weld it to? just making sure before i buy my pieces and then how do i go about getting the o2 bung welded, drill a hole first or what>?
Speedeuphoria
07-25-2007, 08:01 AM
yep should be 2.5"
yes drill a hole(rota broach works well or step bit), they recomend that its not on the bottom of the pipe, so moisture dosent collect and prematurely end the o2 sensors life
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