What about the VW VR6? Its OHC and 2.8 liters. If you leave it out your
disenfranchising a lot of potential ST players. May I suggest:
3.1 OHC
3.8 OHV ( that lets the GM NA V-6 in )
1.5 Rotary
2.5 Abnormally aspirated
Regards,
Alan
On Thursday, July 15, 1999 3:08 PM, dg50@daimlerchrysler.com
[SMTP:dg50@daimlerchrysler.com] wrote:
> It had been brought to my attention that there is a special reason why the
ST
> displacement limit was raised from 2.4 L in its original form to the 3.1L
in its
> current form.
>
> There exists a GM 3.1L motor, found in the Sunfire and similar cars, that
unlike
> all the other rice rocket motors is a _pushrod_ motor, not an OHC motor.
> Accordingly, it needs the extra displacement to be able to run with the
small
> Japanese/Euro motors, as it's valvetrain limits the amount of RPM you can
wind
> out of it.
>
> I had forgotten that GM still made pushrod motors. :)
>
> This presents an opportunity. Pushrod motors don't make the same power as
OHC
> motors of the same displacement, even when supercharged/turbocharged like
they
> would in STU. This means we can allow some more people to play (and cut
out some
> problem cars) if we differentiate on valvetrain type.
>
> Something like this:
>
> STU displacement limits are as follows:
> - for overhead camshaft engines - 2.500 litres
> - for pushrod valvetrain engines - 4.000 litres
> - for rotory (wankel) engines - 1.5 litres
>
> This would allow the Grand Prix, Regal etc (they _are_ pushrod motors,
right?)
> but keep out the more expensive/rare Porches, Supras, etc.
>
> Looks like something Tony George would cook up, eh? :)
>
> Take a hard look at this, please. Let me know who we wind up
> allowing/disallowing (especially with the rotories) with this layout. Feel
free
> to suggest better limits.
>
> BTW, how big is the Olds Quad 4 motor?
>
> DG
>
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