Classing performance engines

[AlfaNeely@domain.elided]

       I agree that the engine described is a hot street engine, useless for 
racing.  Both the Solo II Production class rules on page 196 and the SCCA E 
Production rules on page PCS-32 specify that the valves must be no larger 
than 1.73 inches intake and 1.57 inches exhaust.  The oversized valves make 
the engine illegal.  Another example of why people need to buy a rule book 
before starting on building a race car.
       The engine might be legal for SCCA GT-3, but it would not be 
competitive.  It is not modified nearly enough for a real race engine.  Good 
thing that it passes smog, which was the owner's original comment.
       Many of the race classes where the engine might run do not allow Spica 
injection.  I am not knowledgeable enough about the Solo rules, but it 
appears that stock type fuel injection might be allowed in Solo II Production 
classes.  Spica is not legal in E Production.
       There are lots of sanctioning bodies out there, all with their own 
rules.  What ever you build, read the rule book before you start.  
       The AROC rules are more or less "run whacha brung" - they specify 
points for various modifications, which in turn determine the class the car 
competes in.  So yes, that engine could run at the AROC National Convention.


Ciao,
Russ Neely
Oklahoma City



In a message dated 02/10/2002 4:38:44 PM Central Standard Time, 
owner-alfa-digest@domain.elided writes:



> Date: Sun, 10 Feb 2002 09:08:09 -0800 (PST)
> From: Scott Fisher <sfisher71@domain.elided>
> Subject: Re: Classing performance engines
> 
> - --- jim <jim@domain.elided> wrote:
> > At 10:11 AM 2/9/02 -0500, George suggested:
> > 
> > >1. Street use (emissions compliant and who cares)
> > >2. AROC Autocross & Time trials
> > >3. SCCA Stock class Autocross (Solo II)
> > >4. SCCA Street Prepared class Autocross (Solo II)
> > >5. SCCA Time Trials (Solo I)
> > >6. SCCA Improved Touring racing (IT)
> > >
> > >Comments?
> > >
> > >George Schweikle
> > >Lexington, KY
> > 
> > I just sold a Spica injected spider with:
> > 
> > 10.4 piston/liners
> > Pitatori(sp) cams
> > big valves
> > Ingram modified injection pump
> > Marelliplex
> > 
> > It psssed California smog with no trouble, where
> > would you class that? I
> > think emission compliant can fit several of his
> > catagories.
> 
> Not necessarily -- the SCCA specs would put that in
> Prepared class autocrossing, or Production category
> road racing (any single one of the cam, compression,
> and valves would do that).  I'm not up on AROC
> competition regs, I'll defer to Russ on that issue.
> 
> So that engine is clearly in George's category 1 -- a
> hot street motor, useless in racing, but I bet it'd be
> a lot of fun on the tour I'm getting ready to leave
> for!
> 
> - --Scott Fisher

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