Downpipe
- Thread starter RUSTYNAIL
- Start date
turbofabricator
Well-Known Member
- Joined
- Mar 7, 2004
We just finished with all the fab work on a TTA. The car has a 3.5" oval down pipe (stainless) and 3.5" oval intercooler plumbing under the radiator to the Precision front mount intercooler. It also has a 4" MAF that was modified to fit the TTA (Full Throttle GN pipe). Here's the pics: http://www.turbobuick.com/forums/turbo-lounge/256786-finally-finished-tta-fab-project.html
http://www.turbobuick.com/forums/general-turbo-buick-tech/239280-tta-front-mount-modification.html
http://www.turbobuick.com/forums/general-turbo-buick-tech/240352-4-maf-tta-fullthrottle.html
http://www.turbobuick.com/forums/ge...h/228325-tta-3-5-oval-down-pipe-finished.html
http://www.turbobuick.com/forums/ge...-w-front-mount-intercooler-3-5-down-pipe.html
The TTA is a PAIN to get anything to fit nicely. The car originally had a 3" down pipe built by Turbo Technologies, but it hit in 5 places and would knock retard up to 30* of timing.
I used oval to gain precious clearance. Then used oval on the intercooler to gain ground clearance (the car is REAL low) If that 3" pipe clears everything, and is readily available, it looks like a good buy. It took me over 20 hours to fab up that oval down pipe. There was LOTS of time just laying under the car trying to "see" just how in the heck I was going to fit a 3.5" pipe in there! It did require a fair amount of surgery to get it in there. Not a job for the purist. I had to whittle in the chassis a little bit, and "manipulate" the firewall a bit. But it does have good clearance now, and it'll flow enough for over 800 hp. (not that his car has anywhere near that much, with a TE-63 turbo)
http://www.turbobuick.com/forums/general-turbo-buick-tech/239280-tta-front-mount-modification.html
http://www.turbobuick.com/forums/general-turbo-buick-tech/240352-4-maf-tta-fullthrottle.html
http://www.turbobuick.com/forums/ge...h/228325-tta-3-5-oval-down-pipe-finished.html
http://www.turbobuick.com/forums/ge...-w-front-mount-intercooler-3-5-down-pipe.html
The TTA is a PAIN to get anything to fit nicely. The car originally had a 3" down pipe built by Turbo Technologies, but it hit in 5 places and would knock retard up to 30* of timing.
I used oval to gain precious clearance. Then used oval on the intercooler to gain ground clearance (the car is REAL low) If that 3" pipe clears everything, and is readily available, it looks like a good buy. It took me over 20 hours to fab up that oval down pipe. There was LOTS of time just laying under the car trying to "see" just how in the heck I was going to fit a 3.5" pipe in there! It did require a fair amount of surgery to get it in there. Not a job for the purist. I had to whittle in the chassis a little bit, and "manipulate" the firewall a bit. But it does have good clearance now, and it'll flow enough for over 800 hp. (not that his car has anywhere near that much, with a TE-63 turbo)turbofabricator
Well-Known Member
- Joined
- Mar 7, 2004
Not much, really. I posted the progression pics above. It can also be accomplished with cutting and using silicone hoses and clamps, too. You don't "need" a TIG welder.
Oh cool, thanks for the info. Will a translator + or regular translator works with the pipe? Any tuning issues?
Scott89TTA
Well-Known Member
- Joined
- Jul 12, 2005
Nice work Steve...I still want to get the top section of your DP for my Action Fab pipe just went on vacation for the last 10 days that's why I haven't called yet. I will be in touch soon...recovering from vacation $$$ shock
-Scott
-Scott
turbofabricator
Well-Known Member
- Joined
- Mar 7, 2004
It requires a GenII translator. There are a few tuning issues right now, but it might be my wiring. I'll get to it this weekend and hopefully figure it all out/finish it.
Lynn D. Brown
New Member
- Joined
- Oct 24, 2004
Some beautiful stuff guys ! Me wantum one ! I will call.
So, I guess this pipe does away w the flex elbow ? Any problems there ? What I would ideally like is to be able to put a dump AHEAD of the Cat Conv, so I can dump @ the track and still keep the Cat Conv for passing Smog.
I can still pass in CA, amazingly. Altho' as long as I can switch back & forth between a dump & the Cat Conv, that is still doable - as long as U use the band type clamps. I already have the old ATR 3" exhaust.
I don't understand what the DP has to do w the translator ?
So, I guess this pipe does away w the flex elbow ? Any problems there ? What I would ideally like is to be able to put a dump AHEAD of the Cat Conv, so I can dump @ the track and still keep the Cat Conv for passing Smog.
I can still pass in CA, amazingly. Altho' as long as I can switch back & forth between a dump & the Cat Conv, that is still doable - as long as U use the band type clamps. I already have the old ATR 3" exhaust.
I don't understand what the DP has to do w the translator ?
Lynn,
The pipe has no flex pipe. I have had no problem with the pipes I have installed. I have also put dumps in front of the cats and used a electronic cut outs to open & close the dumps. Here in NJ they need cats so we install 3" inlets on the converters to fit the down pipes. I can build one for you.
Steve Kaminski
856-881-3235
The pipe has no flex pipe. I have had no problem with the pipes I have installed. I have also put dumps in front of the cats and used a electronic cut outs to open & close the dumps. Here in NJ they need cats so we install 3" inlets on the converters to fit the down pipes. I can build one for you.
Steve Kaminski
856-881-3235
