Andy's 91' 80q

Document and share your build!
mrdeye
Posts: 193
Joined: Sun Nov 13, 2016 10:05 am
Location: Colorado

Re: Andy's 91' 80q

Post by mrdeye »

Like a glove! :thumbsup: :beer:
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
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audifreakjim
Posts: 2144
Joined: Sun Mar 03, 2013 3:00 pm

Re: Andy's 91' 80q

Post by audifreakjim »

rennenmsports 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.
Glad you kept it! I've been checking out your build. Love the airbox :)
rennenmsports
Posts: 168
Joined: Sat Jan 14, 2017 8:45 pm

Re: Andy's 91' 80q

Post by rennenmsports »

audifreakjim wrote: Fri Jan 30, 2026 2:16 pm
rennenmsports 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.
Glad you kept it! I've been checking out your build. Love the airbox :)
Thank you! I worked hard on this. I’m glad you like it. Hopefully it will be ready to tune by the end of April
rennenmsports
Posts: 168
Joined: Sat Jan 14, 2017 8:45 pm

Re: Andy's 91' 80q

Post by rennenmsports »

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
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rennenmsports
Posts: 168
Joined: Sat Jan 14, 2017 8:45 pm

Re: Andy's 91' 80q

Post by rennenmsports »

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

Post by rennenmsports »

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
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Re: Andy's 91' 80q

Post by rennenmsports »

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rennenmsports
Posts: 168
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Re: Andy's 91' 80q

Post by rennenmsports »

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rennenmsports
Posts: 168
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Re: Andy's 91' 80q

Post by rennenmsports »

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
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Re: Andy's 91' 80q

Post by rennenmsports »

Let’s see if 16ga 304ss amazon stuff holds up for the flex pipe back
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rennenmsports
Posts: 168
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Re: Andy's 91' 80q

Post by rennenmsports »

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rennenmsports
Posts: 168
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Re: Andy's 91' 80q

Post by rennenmsports »

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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
rennenmsports
Posts: 168
Joined: Sat Jan 14, 2017 8:45 pm

Re: Andy's 91' 80q

Post by rennenmsports »

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
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rennenmsports
Posts: 168
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Re: Andy's 91' 80q

Post by rennenmsports »

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rennenmsports
Posts: 168
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Re: Andy's 91' 80q

Post by rennenmsports »

:bangshead: there’s only 3 cat back exhaust mounting points
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
dspl1236
Posts: 8
Joined: Sun Oct 12, 2014 9:24 am

Re: Andy's 91' 80q

Post by dspl1236 »

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 :D Hanger situation sucks. My rear oem muffler broke at the welds, so it was my quick fix. :bangshead:

:hide: I am not happy with my setup.
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'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
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