Andy's 91' 80q
Re: Andy's 91' 80q
Like a glove!

Mr.
Daily driver: '01 Toyota 4Runner
Project car: '84 Audi Coupe GT
Previous cars:
'95 S6 Avant, '87 5K TQ, '95 VW Golf, '84 VW Jetta turbo diesel, '84 VW GTI
Daily driver: '01 Toyota 4Runner
Project car: '84 Audi Coupe GT
Previous cars:
'95 S6 Avant, '87 5K TQ, '95 VW Golf, '84 VW Jetta turbo diesel, '84 VW GTI
- audifreakjim
- Posts: 2144
- Joined: Sun Mar 03, 2013 3:00 pm
Re: Andy's 91' 80q
Glad you kept it! I've been checking out your build. Love the airboxrennenmsports wrote: Mon Nov 03, 2025 1:28 pm Hello again. It’s been a long time. I decided to keep it. Too sentimental. The piston rings went. I’m going to be able to get a short block from Marc in about 6 months. Now that I know which turbine housing I’m going to use I can make the exhaust and intake as well.
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rennenmsports
- Posts: 168
- Joined: Sat Jan 14, 2017 8:45 pm
Re: Andy's 91' 80q
Thank you! I worked hard on this. I’m glad you like it. Hopefully it will be ready to tune by the end of Aprilaudifreakjim wrote: Fri Jan 30, 2026 2:16 pmGlad you kept it! I've been checking out your build. Love the airboxrennenmsports wrote: Mon Nov 03, 2025 1:28 pm Hello again. It’s been a long time. I decided to keep it. Too sentimental. The piston rings went. I’m going to be able to get a short block from Marc in about 6 months. Now that I know which turbine housing I’m going to use I can make the exhaust and intake as well.![]()
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rennenmsports
- Posts: 168
- Joined: Sat Jan 14, 2017 8:45 pm
Re: Andy's 91' 80q
I shortened the downpipe a little to fit this
I hope haha. Wish me luck. 3” oval tubing. More ground clearance and will leave more room from melting the axle boot
I hope haha. Wish me luck. 3” oval tubing. More ground clearance and will leave more room from melting the axle boot
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rennenmsports
- Posts: 168
- Joined: Sat Jan 14, 2017 8:45 pm
Re: Andy's 91' 80q
Here’s progress so far. No oval tubing. Can’t get it to fit
do you all run 3” tubing? I’m worried about ground clearance and melting things?
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rennenmsports
- Posts: 168
- Joined: Sat Jan 14, 2017 8:45 pm
Re: Andy's 91' 80q
1 3/4 roll cage tool and a serpentine belt alignment tool to merge the wastegate into the downpipe
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rennenmsports
- Posts: 168
- Joined: Sat Jan 14, 2017 8:45 pm
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rennenmsports
- Posts: 168
- Joined: Sat Jan 14, 2017 8:45 pm
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rennenmsports
- Posts: 168
- Joined: Sat Jan 14, 2017 8:45 pm
Re: Andy's 91' 80q
I’ve got 3/4” clearance from the drive axle boot. Heat wrap and a custom heat shield
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rennenmsports
- Posts: 168
- Joined: Sat Jan 14, 2017 8:45 pm
Re: Andy's 91' 80q
Let’s see if 16ga 304ss amazon stuff holds up for the flex pipe back
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rennenmsports
- Posts: 168
- Joined: Sat Jan 14, 2017 8:45 pm
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rennenmsports
- Posts: 168
- Joined: Sat Jan 14, 2017 8:45 pm
Re: Andy's 91' 80q
Got the downpipes all welded up. Had to take a little off the subframe pinch weld. Doing the heat shields and secondary support bracket now
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rennenmsports
- Posts: 168
- Joined: Sat Jan 14, 2017 8:45 pm
Re: Andy's 91' 80q
1.9 bar / 13.5 psi or 2.2 bar / 17.5 psi?
That is the question
If I was to guess the intake hose at the throttle body popping off is its weakest link.
Bonding silicone to aluminum:
Permabond
Polyolefin primer
Permabond cyanoacrylate 105
That is the question
If I was to guess the intake hose at the throttle body popping off is its weakest link.
Bonding silicone to aluminum:
Permabond
Polyolefin primer
Permabond cyanoacrylate 105
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rennenmsports
- Posts: 168
- Joined: Sat Jan 14, 2017 8:45 pm
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rennenmsports
- Posts: 168
- Joined: Sat Jan 14, 2017 8:45 pm
Re: Andy's 91' 80q
I’m gonna have to fix that. There’s not much room with a 3” pipe in a 2” ditch. I’m debating about just bolting the flex pipe back straight to the car with rubber isolators
Re: Andy's 91' 80q
I bypassed going up and around the diff on mine. It is now the first thing that hits anything. I plan on redoing mine to snake around. Your image looks like what I had I mind. 45deg over the CV. I kinda gave up fitting it correctly. Even the same box of amazon pipe but in 2.5
Hanger situation sucks. My rear oem muffler broke at the welds, so it was my quick fix.
I am not happy with my setup.


'13 A6 3.2T + '90 Jetta - 2.0T 20v + '92 Corrado SLC + '90 90q 2.6 i5 20v + '90 GTI Plum 3.6 VR6 + '89 200 20vt + '01 A8 +'09 Passat Wagoon 07k