Turbo'ing a 1990 90Q20V
09-23-2003, 12:04 AM
#1
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Turbo'ing a 1990 90Q20V
What turbo's are you guy's using?, what size IC can you fit up front? Where to tap for oil feed?
I think I am going to start collecting parts to start the project over the wintertime. Has anyone done a turbo setup on this car before?
I think I am going to start collecting parts to start the project over the wintertime. Has anyone done a turbo setup on this car before?
09-23-2003, 04:28 AM
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Not a good idea on stock internals.
Stock compression is 10.1:1, only good for about 6 psi of boost, but it has been done before, I think only once. Better do get a engine/management system from a 91 200 quattro, a 20v turbo from factory.
Do a search on the forums.
Do a search on the forums.
09-23-2003, 05:49 AM
#3
Re: Not a good idea on stock internals.
10.3:1...
Should really drop the CR by a full point at least, ie 9.3:1. Either mess with the pistons, or a head gasket/spacer, or run new pistons. Then you have to worry about the cams, which are not so good for turbo duty. Injectors, ECU, etc are also not boost-friendly.
As for oil and coolant taps, look to see what the factory did, as its pretty much the easiest way ;-)
Should really drop the CR by a full point at least, ie 9.3:1. Either mess with the pistons, or a head gasket/spacer, or run new pistons. Then you have to worry about the cams, which are not so good for turbo duty. Injectors, ECU, etc are also not boost-friendly.
As for oil and coolant taps, look to see what the factory did, as its pretty much the easiest way ;-)
09-23-2003, 02:17 PM
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Re: Not a good idea on stock internals.
WHat is the weak part of the motor? 10.1:1 isnt terribly high, but definatly suited to a low boost app.
Getting anotehr motor/ecu/etc from another model isnt relaly cost effective, when you think that you can toss a basic intercooled turbo setup on the car for ~500 and have another 50 extra fun horses ready to play with.
Getting anotehr motor/ecu/etc from another model isnt relaly cost effective, when you think that you can toss a basic intercooled turbo setup on the car for ~500 and have another 50 extra fun horses ready to play with.
09-23-2003, 04:47 PM
#7
Re: Not a good idea on stock internals.
Weak point is that the motor is 10.3:1, and very much not designed for turbo duty. Has the wrong injectors, wrong cams, wrong water manifold for the head, etc. Has a lot of wrongs for turbos. Trust me ;-)
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