Crane HI6 install, and still some stumbling

[Jim Green]

--- JShadzi at aol.com wrote:
> Hey Jimmy,
>
> On a related note, took my car for a spin today for
> the first time in a while (took about a month of
> downtime to put the IC in in my spare time).  The
> best words to describe a flowed out 80tq MC motor
> with EFI?  Huba, huba.  Anyhoo, I'll be flogging her
> at Buttonwillow Raceway on Monday, if anyone's in
> the area come out and say hi.

Big difference huh?

> Ok, Jim, one thing I've been thinking all this time,
> is are you running street gas, like 90-something?  I
> haven't been able to really run more than 15psi on
> street gas, granted CA gas is the worst in the
> nation, but I think you're really pushing the limits
> of power on street gas.  At 15psi I estimate you're
> making 300 crank, at 20 I'd say closer to 350+
> crank, I suppose you can track the pinging with the
> APC, but have you tried like a 10% tank of Toluene
> or a half tank of 100 oct?

I've been meaning to try some Toluele.  The APC is a
great tunning tool, it will flash the knock light
before you even hear pinging.  I'm going to try some
more advance in the area.  I was having a hard time
narrowing down the range before because it usaully
happened when blasting up I-70 dodging SUV's.  After
trouble shooting, I have a feeling it needs some more
advance at 3000 rpms and high boost.

> That would be an
> interesting test.  Another thing, have you done a
> pressure test on your induction side up to 20psi?
> Just curious, might be nice knowing you don't have
> any leaks at that boost level.

I'm going to pressurise everything once I get the cam
out next time, once with stock valve springs, next
with HD springs to test the valve float with boost
theory.


> BTW, Coppola Red Zin is really good.

That usually helps me think too:)

Thanks,

=====
Jim Green
'89 90tq 034EFI, Haltech IG5
http://www.geocities.com/jeg1976/car_home.html

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