[s-cars] Rebuilding turbos

[Jim Green]

On 5/16/06, Eric Phillips <gcmschemist at gmail.com> wrote:
>
>
> After doing some small amount of research, it seems that folks are
> suggesting the head and EM are at their limits with the stock unit.
> If you go up in size at all, you need an RS2 EM.  Considering the
> bulletproof nature of the rest of the mechanicals, this seems
> incongruous to me.  I spoke to Javad at 034Motorsports, and he seems
> to think this concern is "B.S."  Now, I will allow that he is trying
> to sell stuff.  But like all other low-volume producers, aimed at a
> very small market, he can't just shoot from the lip.
>
> In my circumstance, I have a MRC Stage 2 chip and an Apikol FMIC, and
> it seems that there is a little room for a small upgrade in airflow.
> Such that in the course of a turbo rebuild or replacement, one could
> take a small step up without getting into a lean condition at high
> RPM, or exceeding the limits of the fuel pump, injectors or MAF.  Or,
> more importantly, burned exhaust valves.
>
>
Eric, there are people running stock manifolds, heads and larger turbos to
well over 300 whp.  With the right turbo you will see reduced back pressure
and better performance.  What turbos were these burnt valves happening
with?  RS2?  That's still a pretty small hotside.  Get something like a GT
turbo that flows like mad out the exhaust and I bet you will not have any
problems.


-- 
Jim Green
'89 90 GT35R quattro
'89 80q
http://www.mswanson.com/~jgreen/car_home.html<http://www.mswanson.com/%7Ejgreen/car_home.html>