(Bit off topic) turbo lag...

Axel Rietschin axel_rietschin at compuserve.com
Thu Jan 11 00:43:13 GMT 2001


> Hmm I am not sure about exact #'s but let me give some futher background,
> they are junkyard motors, 130,000+ miles, not headwork, stock cams and
> bottom end. Junkyard T3 super 60 turbos and a SDS programmable efi. I
would
> estimate from the quarter mile  time/MPH that the power is around 330 at
the
> crank, give or take.
> One of the things to remember and I get in trouble with this myself that
> it's not so much boost pressure but airflow at that pressure that makes
the
> power.

>From what I understand, the airflow scales pretty much linearly with the
pressure, for all practical purposes. The point of diminishing returns is
when you have to retard and move away from MBT because of knock.

> I have an 8:1 turbo motor in a street car and I feel like the bottom end
is
> a little to weak, I would really like to see sometihng closer to 9:1 for
the
> street.

..or maybe a smaller turbine housing?

> Let's take this off-line if you want to discuss more, I'd be interested in
> hearing more about your set-up

Sure.

--Axel


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