Topic: 3" pipe on a 5 bolt t3 outlet flange, here is 1 way to do it. (Read 8173 times)

weirtech · « **on:** October 02, 2009, 07:24:25 PM »

here is a comparison between a 2.5" downpipe being replaced with a 3" downpipe, both on a 5 bolt t3 outlet flange. basically, how i do it is i take a 3" pipe, weld it onto the flange almost all the way around except near the 3 bolt holes that are close to the pipe. i throw it in my arbor press and use a rounded off punch to press the divot in the pipe to make clearance for the bolt head, then weld around it.

patsmx5 · « **Reply #1 on:** October 02, 2009, 07:39:16 PM »

good idea. I realized I should have done this (dent the pipe around the bolts) right after I got done welding mine out and finding out the bolt heads hit the welds... Will do this next time for sure.

j.h.christ · « **Reply #2 on:** October 02, 2009, 08:05:13 PM »

hotrex does it with a hammer

turbob16hatch · « **Reply #3 on:** October 02, 2009, 08:22:42 PM »

yeah i use a hammer and a "custom" flat head screw driver.

HiProfile · « **Reply #4 on:** October 03, 2009, 02:19:19 AM »

I did that on my last 2 downpipes, the only problem is trying to get a fucking wrench on it. What works best is to not center it, and give that middle bolt as much room. That way the top/bottom holes have more clearance to start with. A ball-end allen wrench will solve most problems, but recently I decided a hmt flange drilled for a Garrett GT 3" 4-bolt flange would be better. I have some cad drawings that shows it working, in theory... I don't think many people would like a flange for a flange, but it's tits if you want a more compact setup than a v-band.

BlkGSR · « **Reply #5 on:** October 11, 2009, 02:51:08 PM »

Fuck a 5-bolt flange... mine is horrible, can only squeeze four of the 5 bolts in. Will be going to a 5-bolt to V-band flange very soon.

Good job though, if mine had those parts punched in I probably wouldn't have a problem.

turbob16hatch · « **Reply #6 on:** October 11, 2009, 03:57:25 PM »

hiprofile. your right on the offset working very good for keeping the bolt spacing as far away as possible. i done this and it works good. :yes:

Ravage70 · « **Reply #7 on:** October 11, 2009, 11:59:05 PM »

no shit
Comon Weir we aren't idiots... Besides, a hammer is the first thing I use in every situation; whether it be smashing flush a protruding screw or cracking eggs for breakfast.

danz · « **Reply #8 on:** October 12, 2009, 02:13:38 AM »

nice work weir.

we did this on my buddys 3inch down pipe. tacked to either side of the bolt hole. used a punch to dent it, then welded it up!

worked good!

Towdogg · « **Reply #9 on:** October 13, 2009, 07:57:26 PM »

This is gool looking shit..... nice and clean.....

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Author Topic: 3" pipe on a 5 bolt t3 outlet flange, here is 1 way to do it. (Read 8173 times)

weirtech

3" pipe on a 5 bolt t3 outlet flange, here is 1 way to do it.

patsmx5

Re: 3" pipe on a 5 bolt t3 outlet flange, here is 1 way to do it.

j.h.christ

Re: 3" pipe on a 5 bolt t3 outlet flange, here is 1 way to do it.

turbob16hatch

Re: 3" pipe on a 5 bolt t3 outlet flange, here is 1 way to do it.

HiProfile

Re: 3" pipe on a 5 bolt t3 outlet flange, here is 1 way to do it.

BlkGSR

Re: 3" pipe on a 5 bolt t3 outlet flange, here is 1 way to do it.

turbob16hatch

Re: 3" pipe on a 5 bolt t3 outlet flange, here is 1 way to do it.

Ravage70

Re: 3" pipe on a 5 bolt t3 outlet flange, here is 1 way to do it.

danz

Re: 3" pipe on a 5 bolt t3 outlet flange, here is 1 way to do it.

Towdogg

Re: 3" pipe on a 5 bolt t3 outlet flange, here is 1 way to do it.