I searched and found this thread: http://www.r3vlimited.com/board/show...ht=audi+turbos and I started to wonder how easy this is. I saw a wrecked s4 at a local junk yard and I was thinking about pulling the turbo and some more stuff off of it. I was wondering if anyone has more info on how to do this turbo set up. It seems to be fairly reasonably priced and sounds no too hardcore of a set up.
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Audi turbo m20?
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just as a general rule, making something more complicated usually doesn't make it cheaper, and it sounds like that's a priority.
if you want "reasonably priced" and "not too hardcore", go with a junkyard T3 with a .62 AR, assuming we're still talking about an m20b25. one of those will be cheaper than 2 audi turbos, and there are well-known solutions for the hot-side plumbing.past:
1989 325is (learner shitbox)
1986 325e (turbo dorito)
1991 318ic (5-lug ITB)
1985 323i baur
current:
1995 M3 (suspension, 17x9/255-40, borla)
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For all those people who find it more convenient to bother you with their question rather than to Google it for themselves.
not trying to be a dick, just wanna teach a man to fish...
i was looking for something slightly smaller (.48ar) for my M42, but the first one that comes to mind is the ford mustang SVO / t-bird turbo 5spd / merkur xr4ti 5spd.past:
1989 325is (learner shitbox)
1986 325e (turbo dorito)
1991 318ic (5-lug ITB)
1985 323i baur
current:
1995 M3 (suspension, 17x9/255-40, borla)
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If you take for example, the area in A1 and divide it by R1, you will have found the A/R for this turbine housing. Each cross section and radius have the same proportions so the A/R will be found by using any cross section/radius.
Common turbine housing A/R's are .58, .69, .81, .84, .96 and 1.00. The turbine will start to spool sooner with a .58 A/R, and later with a 1.00 A/R. Lag will be a problem if the A/R is too large, but if it's too small, the turbo will run out of steam and be nothing more than a restriction.
grow some thicker skin, son, because i'm not the most abrasive person around here by a longshot.past:
1989 325is (learner shitbox)
1986 325e (turbo dorito)
1991 318ic (5-lug ITB)
1985 323i baur
current:
1995 M3 (suspension, 17x9/255-40, borla)
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Very informative, better then the I'll google that for you./....
you think the size of the compressor could be nominal compared to the impeller, therefor raising the boost more rapidly?
I mean, these things are all good, but it doesn't help selecting a turbo that is good between 1700rpm and 5thou on a 2.7.. Which would be the litre minute calculation basis.. not your fault mind you..
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