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chapel
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Post subject: B4 Audi 90 quattro VR6 Swap?  Posted: Fri Nov 28, 2008 7:39 am |
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| kickin' tires'n lightin fires |
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Joined: Fri Nov 28, 2008 7:36 am
Posts: 815
Location: Salem MA, USA
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I was really interested in seeing the A4 with the turbo VR6.
I was wondering what would be required to do a VR6 swap into a 93 Audi 90 quattro 2.8 12V V6?
I would assume it would be... difficult... to say the least 
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nismo
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Post subject: Posted: Fri Nov 28, 2008 9:51 am |
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| mach 2 with my hair on fire |
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Joined: Mon Oct 03, 2005 12:15 pm
Posts: 2323
Location: I AM THE STIG!
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Other than the fact that the wiring harness would put parts in the wrong places, and the motors would likely have stuff programmed to not work 100%, I think it would work. This doesn't take into account whether one setup expects there to be a distributor or not though.
With some tweaking of the wiring harness and programming of the computer, I think it would run...but by the time you figure that crap out, you're much better off using a IIc.
Eric
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:.: Vorsprung Durch Technik :.: Audi Quattro :.: The Unfair Advantage :.:
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Dyed in the wool, washed in the blood : μολὼν λαβέ starting a collection
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the_natrix
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Post subject: Posted: Fri Nov 28, 2008 10:06 am |
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| I post, therefore I am |
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Joined: Tue Feb 17, 2004 1:05 pm
Posts: 4367
Location: Sobbing in the corner.....
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no, the 12v v6 sensor package will not work with the VR6. primarily is the crank trigger assembly. the 12v uses the common audi 3 sensor crank /cam/tdc sensor assembly to determine the engine rpm and crank angle.
the vr6 uses a 60-2 wheel to locate its crank angle and rpm info.
other then that, the 12v has an egr package, aswell as the manifold changeover control and does not utilize a distributor based ignition system.
the vr6 as none of those features AFAIK.
you'd be better off snaggling an entire vr6 car and getting the package from that car to do the swap.
but my question to you is this.... why would you go VR6 and stay normally aspirated?( by using the factory 12v engine managment if you could)
you would be far better off turboing the vr6, in imho the vr6 and audi 12v v6 are fairly comparable in the stock normally aspirated format. so it would be alot of work for near zero improvement.
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Audi, imprisoning me, all that i see, absolute horror. I cannot live, i cannot die, trapped in my audi, my audi my holding cell..
1988 Audi 5ktq - 10vt Ms&s Extra
1993 Audi 90q - 12vt
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16vt rabbit
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Post subject: Posted: Fri Nov 28, 2008 11:12 am |
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| Redline? |
Joined: Sat Mar 01, 2008 3:03 pm
Posts: 119
Location: west haven, ct
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for the wiring just use the vr6 aaa motors harness and computer. much easier and has a lot more option for upgrades, chip, cams, mild turbo/supercharging ect....
definately worth doing and is easy to wire up
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79 rabbit L 16v - project/finished/SOLD
93 Audi 90 csq - d/d
80 rabbit p/u TDI - Finished
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chapel
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Post subject: Posted: Fri Nov 28, 2008 2:34 pm |
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| kickin' tires'n lightin fires |
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Joined: Fri Nov 28, 2008 7:36 am
Posts: 815
Location: Salem MA, USA
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Well, speaking normally aspirated, I like the idea of a normally aspirated 3.0L 12V VR6
or, if I ever won the lottery, a 24V 3.2L VR6 on throttle bodies
pipe dream...
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the_natrix
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Post subject: Posted: Fri Nov 28, 2008 3:26 pm |
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Joined: Tue Feb 17, 2004 1:05 pm
Posts: 4367
Location: Sobbing in the corner.....
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dont forget, the audi 90 is not a jetta or GTI chassis.... it has more heft to it and a bit more rolling friction.
i guess what im saying, is if i was to go through all that expense and work, id rather have some real numbers to back it up. IE serious torque and hp from a turbo machine.
but thats just me.
_________________
Nate's Law:
The greater the number of people in the group, the lower the total collective, and individual intelligence of said group becomes.
Audi, imprisoning me, all that i see, absolute horror. I cannot live, i cannot die, trapped in my audi, my audi my holding cell..
1988 Audi 5ktq - 10vt Ms&s Extra
1993 Audi 90q - 12vt
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Alloutofdonuts
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Post subject: Posted: Sat Nov 29, 2008 3:17 pm |
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| I post, therefore I am |
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Joined: Sat Mar 12, 2005 9:31 pm
Posts: 6213
Location: East Germany, NH
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Turbo is always an option though, I mean it's not like it can't be turboed after it's in. Might be less work to do it before hand though! 
Hey if you need a VR6 I have a coil pack version from a '94 passat w/104k miles on it, with ecu & wiring harness for sale, I'm not too far from you either up in NH . Can deliver too.
Not a B4 but may give you some more ideas:
http://www.motorgeek.com/phpBB2/viewtop ... highlight=
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Time to make the effin' donuts sucka! 
95 90q
03 R1
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