chris712vt
15+ Year Contributor
- 524
- 6
- Mar 27, 2006
-
SLC,
Utah
Hey guys... haven't been as active on here lately, work is extremely busy and I've just been sourcing parts. But I finally have just about everything ready to go but need a last minute question answered.
My turbine outlet is 2.5", but I'm building myself a full custom 3" exhaust. When it comes to my downpipe flange (it is a 4-bolt Garrett T3 .63 A/R by the way) can I use a 3" flange and have it still bolt up and seal just fine, or do I need to use a 2.5" flange and flare out to 3". It would be much easier to just use a 3" flange with my 3" exhaust all the way to the turbo.
I'm not sure if A - the 2.5" and 3" 4-bolt T3 flanges have the same bolt pattern, and B - assuming they do, the 3" would still seal just fine, right?
Anyway, I need to square this away very quickly, before this afternoon so I can order it and get welding this weekend.
As some of you may remember, I picked up Slippi's prototype PnP MSnS recently. And to go with it I'm adding all these new parts as well: an Aeromotive 1:1 AFPR, PTE 880s, misc. lines and fittings, new 3" catback (upgrading from 2.5), making my own custom 3" downpipe and test pipe, and a new turbo. Lots of upgrades all at once, but I'm hoping to get most of it fabricated/installed this weekend. The turbo is a Garrett T3/T04-S 60-1, .70 A/R compressor, .63 A/R turbine. I took a picture of my little T3, my 50-trim, and the 60-1 all taken apart and laid out next to each other, interesting to compare them, I'll post a picture when I get home from work later. I'm looking forward to all the new stuff, car should be very different soon. Profile should be up to date if I remembered everything if you are curious about my setup. Shooting for 400 wheel on pump.
Please let me know about the flange size if you can clarify for me. Thanks!
My turbine outlet is 2.5", but I'm building myself a full custom 3" exhaust. When it comes to my downpipe flange (it is a 4-bolt Garrett T3 .63 A/R by the way) can I use a 3" flange and have it still bolt up and seal just fine, or do I need to use a 2.5" flange and flare out to 3". It would be much easier to just use a 3" flange with my 3" exhaust all the way to the turbo.
I'm not sure if A - the 2.5" and 3" 4-bolt T3 flanges have the same bolt pattern, and B - assuming they do, the 3" would still seal just fine, right?
Anyway, I need to square this away very quickly, before this afternoon so I can order it and get welding this weekend.
As some of you may remember, I picked up Slippi's prototype PnP MSnS recently. And to go with it I'm adding all these new parts as well: an Aeromotive 1:1 AFPR, PTE 880s, misc. lines and fittings, new 3" catback (upgrading from 2.5), making my own custom 3" downpipe and test pipe, and a new turbo. Lots of upgrades all at once, but I'm hoping to get most of it fabricated/installed this weekend. The turbo is a Garrett T3/T04-S 60-1, .70 A/R compressor, .63 A/R turbine. I took a picture of my little T3, my 50-trim, and the 60-1 all taken apart and laid out next to each other, interesting to compare them, I'll post a picture when I get home from work later. I'm looking forward to all the new stuff, car should be very different soon. Profile should be up to date if I remembered everything if you are curious about my setup. Shooting for 400 wheel on pump.
Please let me know about the flange size if you can clarify for me. Thanks!
. I'll post the good ones. I guess I'll start a different thread for my project though... doesn't make sense since this one's titled "turbo flanges" 
