My Fab Project: 6g72 Powered Audi (Many Pics)
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My Fab Project: 6g72 Powered Audi (Many Pics)
Not a Honda, but here's an engine swap I've been working on. It's a slow moving project, but I'll try to keep you guys updated as I make more progress
Car: '93 Audi 90 C/S Quattro
Engine: '92 Mitsubishi 6g72 (3.0L DOHC V6 TT)
Transmission: Audi 01A (AWD), pneumatic locking rear diff.
Engine Management: Megasquirt II
Turbos: Twin Misubishi 14b's (Internal Wastegates)
Exhaust (SS): Custom manifolds > 2.5" Downpipes > 3" Back
Estimated Power: ~400awhp
Before the project:
Audi 2.8L Removed:
Stand for positioning and leveling the new engine:
Measuring for the adapter plate:
Wooden mockup adapter plate:
Crankshaft to transmission input shaft alignment tool:
The motor mounts:
Intercooler Mounts:
The starter (Summit Racing):
Starter Block Modification:
Rough machining of the real adapter plate:
Exhaust Manifold Flanges:
That's it for now. Once I get a TIG welder I'll start on the plumbing. Thanks for looking!
Car: '93 Audi 90 C/S Quattro
Engine: '92 Mitsubishi 6g72 (3.0L DOHC V6 TT)
Transmission: Audi 01A (AWD), pneumatic locking rear diff.
Engine Management: Megasquirt II
Turbos: Twin Misubishi 14b's (Internal Wastegates)
Exhaust (SS): Custom manifolds > 2.5" Downpipes > 3" Back
Estimated Power: ~400awhp
Before the project:
Audi 2.8L Removed:
Stand for positioning and leveling the new engine:
Measuring for the adapter plate:
Wooden mockup adapter plate:
Crankshaft to transmission input shaft alignment tool:
The motor mounts:
Intercooler Mounts:
The starter (Summit Racing):
Starter Block Modification:
Rough machining of the real adapter plate:
Exhaust Manifold Flanges:
That's it for now. Once I get a TIG welder I'll start on the plumbing. Thanks for looking!
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Re: My Fab Project: 6g72 Powered Audi (Many Pics)
Interesting swap, pretty sick that you made your own adapter plate. My question is, for 400awhp, why didnt you go with a VR swap? A bit easier and parts for VR's are way easier to find than Mitsu V6 parts.
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Re: My Fab Project: 6g72 Powered Audi (Many Pics)
Thanks for the positive comments guys.
I didn't go with a VR swap mostly because I wanted to make my own parts instead of buying them and had a 6g72 laying around so figured why the hell not. Plus, all the engine really needs for that kind of power is a good set of forged pistons which are easy enough to find. I might also decide I want more power in the future (with a better transmission) in which case I think the 6g72 is probably the better approach.
Interesting swap, pretty sick that you made your own adapter plate. My question is, for 400awhp, why didnt you go with a VR swap? A bit easier and parts for VR's are way easier to find than Mitsu V6 parts.
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Re: My Fab Project: 6g72 Powered Audi (Many Pics)
I think it's worth it for a Quattro setup. Nothing like putting that power down smoothly, and reliably!
#10
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Re: My Fab Project: 6g72 Powered Audi (Many Pics)
That's pretty amazing... That's one hella thick sheet of aluminum. Nice work, keep it up, looks like you're dedicated and precise.
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Re: My Fab Project: 6g72 Powered Audi (Many Pics)
looks to be a fun project! alot of work for 400whp. deff unique though!
what are you cutting the adapter plate with?
#16
Re: My Fab Project: 6g72 Powered Audi (Many Pics)
Good job on the fab work, but I have to Ask Why?
Was the S4 2.7 motor not strong enough to make the power? Was the Mitsu motor that much lighter or did it have that much more power potential? Why not just boost the motor that was in the car? You are already doing the stand alone injection setup, so why not just tweak what was in the car?
Was the S4 2.7 motor not strong enough to make the power? Was the Mitsu motor that much lighter or did it have that much more power potential? Why not just boost the motor that was in the car? You are already doing the stand alone injection setup, so why not just tweak what was in the car?
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Re: My Fab Project: 6g72 Powered Audi (Many Pics)
Good job on the fab work, but I have to Ask Why?
Was the S4 2.7 motor not strong enough to make the power? Was the Mitsu motor that much lighter or did it have that much more power potential? Why not just boost the motor that was in the car? You are already doing the stand alone injection setup, so why not just tweak what was in the car?
Was the S4 2.7 motor not strong enough to make the power? Was the Mitsu motor that much lighter or did it have that much more power potential? Why not just boost the motor that was in the car? You are already doing the stand alone injection setup, so why not just tweak what was in the car?
#19
Re: My Fab Project: 6g72 Powered Audi (Many Pics)
What about the 1.8 or 2.0T? For 400Hp that number is pretty easy to do with the four cylinder. Of course it doesn't sound near as good as the V6. What are the differences in the TT motor and the regular NA motor, other than the rods and pistons?
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Re: My Fab Project: 6g72 Powered Audi (Many Pics)
Shame you didn't go the VR6 route I'd rather have you make another set of adapters for me then paying 034 for anything. Probably another reason to go with the Mitsu motor
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Re: My Fab Project: 6g72 Powered Audi (Many Pics)
What about the 1.8 or 2.0T? For 400Hp that number is pretty easy to do with the four cylinder. Of course it doesn't sound near as good as the V6. What are the differences in the TT motor and the regular NA motor, other than the rods and pistons?
The only differences I'm aware of are the pistons (lower compression) and possibly slight differences in the head castings. '93+ TT engines also have a forged crank and 4 bolt main bearing caps, but apparently those don't matter a whole lot until you start getting into the high power (800hp+) range. The connecting rods are actually the same for N/A and turbo engines.
#22
Re: My Fab Project: 6g72 Powered Audi (Many Pics)
The VR6 is really a bad choice for anything except swapping into a Golf/Rabbit in place of a 4 cylinder. It is too tall, too heavy, and too inefficient. The only thing the VR6 is good for is pulling around a Passat or Cayanne.
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Re: My Fab Project: 6g72 Powered Audi (Many Pics)
They aren't even any good for that, vr6 engines are junk. Those cylinder heads make me cringe. It was a neat idea that narrow angle v6, but it just isn't any good for a performance application.