rec.autos.simulators

Burnout: Problems with big blocks & 1.20

Markus Strob

Burnout: Problems with big blocks & 1.20

by Markus Strob » Sat, 23 May 1998 04:00:00

After patching to V1.20 I have a weird problem. As soon as I
use a chevy big block engine (427 or 454) it will refuse to rev
over about 4500rpm. This is even though I have power peaks over
5000rpm. It will rev fine until 4500 and then just stop. Will not
go over 4500 no matter how long I hold the gear. Small block
engines do not have this problem. I've looked around, but I
don't see a rev limiter setting anywhere. Changing the
power curve by using different cams doesn't change the cut-off
rpm. I also tried resetting the motor and the whole car. Still
does the same thing.

Can anyone help me here? I'm trying to simulate my 454 corvette
and it seems V1.20 will be fairly close if I can get it working.
V1.1 was ridicilous as it said it would run 9s (it runs 13 flat
on street tires, probably mid 12s on slicks. No way it will run
9s).
--
Markus Strobl, Dallas, TX       http://www.***ramp.net/~mstrobl


Pete

Burnout: Problems with big blocks & 1.20

by Pete » Sat, 23 May 1998 04:00:00

        Markus, bring up the *** menu. You will see the
settings for the 2 step in there. Set the shift points to the
appropriate levels. The numbers you  get in the new patched
version should be much more realistic. Just don't go
over board with the specs you are loading in the engine
room, tires and suspension. If you make it hook harder
than it is capable in real life the numbers will be out of whack.
        A stock street car capable 13's on street tires could
hit high 11's or low 12's with slicks and ladder bars or 4-link.

        Pete



Pete

Burnout: Problems with big blocks & 1.20

by Pete » Sat, 20 Jun 1998 04:00:00

        Keith, very simple, you can't get the power to the ground! Slicks will
help but if you are running too stiiff a shock and spring combination, the
weight
won't transfer. If you add ladder bars or a 4-Link then weight transfer
isn't the problem.
        Sixty foot times are what will determine whether you are getting the power
to
ground. I have a friend who put a stock Caddy motor into a 3000lb vega with
a
4-link it ran 11.6's. Motor probably didn't make as much power as yours,
but it had
a ton of torque! And it hooked!
        If you look at muscle cars from the 60's on street tires almost impossible
to
get into the 12's. A few could hemi's and big block cars. Stick some slicks
and
ladder bars on the car and watch the ET"s.
        It only takes 255 net hp to get a 3600 lb car into the 12.5 to 6's. But
stock
type suspension low 14's about all its good for.  If you are running the
type of hp
I suspect you are, with the right gears and ladder bars your car would go
11's
with ease. Also need to know weight and mph to determine your hp.

        Pete




> >       A stock street car capable 13's on street tires could
> >hit high 11's or low 12's with slicks and ladder bars or 4-link.

> >       Pete

> Hey, Pete, I don't know where you got this from, but I Own a '79 Z-28
that
> does 13.3 on street tires. With Slicks it goes 12.9. I don't see how
slicks
> can shave 1-2 seconds off your car, unless you have a big block, and
you're
> running 195-60-15's, and move to slicks!
> - - - - - -
> (Project In Works)
> 1981 Z-28, PST Poly bushings & Springs, 1.25" F, 1" R Sway Bars,
> Calvert Racing Cal-Tracs, SBC 358 (Bal & Blue, 6 inch rods),
> Air Flow Research Heads (2.05/1.60 64cc, full porting, polished
> combustion chambers), Victor Jr. intake, Edel. Perf. 750 Carb,
> Lunati Roller Cam & Lifters, 1.52 full roller rockers, MSD
> Distributor & 6AL. TH400, 3.73 posi.


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