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Displacement Rules

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Old Feb 11, 2004 | 03:31 PM
  #1  
CheezeFrog's Avatar
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Default Displacement Rules

Anybody else think that there should be some kind of breakdown in each class with regard to displacement? There's a huge size disparity between a lot of the popular motors being run, and for the most part there's no penalties (or allowances) made for running toward the extremes of that range. Back when most of the motors being run were between 1.6 and 2.0L (with the ocassional H22) the playing field was somewhat level. But now with all the new 2.XL motors coming out, I think there should perhaps be some kind of differentiation between the smaller engines and larger ones, maybe similar to the old IMSA GTU and GTO classification. If not splitting into two seperate classes, one for under 2.0L and one for 2.0L and over, then maybe weight penalties/allowances? What do you guys think?
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Old Feb 11, 2004 | 03:34 PM
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Default Re: Displacement Rules (CheezeFrog)

its a fair idea... but couldn't it get difficult to confirm or prove ones displacement? i mean i guess for the most part you could tell by the block, but with sleeves and massive overbores it could get hard, and possibly cause disputes?
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Old Feb 11, 2004 | 03:50 PM
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Default Re: Displacement Rules (mister2racer)

i think there should be classes by weight in the street car class like

3000lb-and up
2600-3000lb
2500-2200lb
2200lb-and down
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Old Feb 11, 2004 | 04:02 PM
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Default Re: Displacement Rules (mister2racer)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mister2racer &raquo;</TD></TR><TR><TD CLASS="quote">its a fair idea... but couldn't it get difficult to confirm or prove ones displacement? i mean i guess for the most part you could tell by the block, but with sleeves and massive overbores it could get hard, and possibly cause disputes?</TD></TR></TABLE>

No you do it on the honor system. If some one protests, then you pull it down.
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Old Feb 11, 2004 | 04:18 PM
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Default Re: Displacement Rules (30psiCiv)

Or you could let the displacement be what ever the builder wants (except for deckplate) and require them to run a restrictor plate on the inlet of the turbo.

Nah, thats too much like NASCAR. (hehe)
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Old Feb 11, 2004 | 04:40 PM
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Default Re: Displacement Rules (FULLTHROTTLE)

sounds like a good idea, but right now that would make too many classes that probably wont fill up. maybe in a few years when the class are overwhelmed and the playing is more competitive.
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Old Feb 11, 2004 | 04:58 PM
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Default Re: Displacement Rules (Importsource)

i don't really think that would be fair to the guys who are running stock displacement h or f-series motors
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Old Feb 11, 2004 | 06:12 PM
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Default Re: Displacement Rules (flip1199)

Best way to limit it is turbo-size...thats how FFW and NMRA Limit Turbo Classes.
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Old Feb 11, 2004 | 06:14 PM
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Default Re: Displacement Rules (Suprdave)

Ummm, shut up Dave...
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Old Feb 11, 2004 | 06:23 PM
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Default Re: Displacement Rules (tony1)

shut up dave
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Old Feb 11, 2004 | 06:54 PM
  #11  
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Default Re: Displacement Rules (fabman)

There are tools out to check the displacement of the motor without tearing the whole engine apart.
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Old Feb 11, 2004 | 07:00 PM
  #12  
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Default Re: Displacement Rules (tony1)

Oops...I mean, yea...max displacement!
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Old Feb 11, 2004 | 07:02 PM
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Default Re: Displacement Rules (Rtype16)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rtype16 &raquo;</TD></TR><TR><TD CLASS="quote">There are tools out to check the displacement of the motor without tearing the whole engine apart.</TD></TR></TABLE>

There are ways to get arround that
Thats why NASCAR tears you down
and Bore and strokes ya
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Old Feb 11, 2004 | 11:00 PM
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Default Re: Displacement Rules (MAX_CFM)

The only true class that is ready to be split into two class...not by max displacement or weight, but by e.t.'s....is the ALL MOTOR class ...divide the class between 10.99 and quicker and quicker and a 11.99-11.00 class. All motor is the only class with more cars than thier are slots. Hardly ever a day when its not filled.
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Old Feb 12, 2004 | 12:48 AM
  #15  
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Default Re: Displacement Rules (fasthatch89)

Yeah, I agree there might be problems fully populating classes if they're divided up depending on your engine size. But what about the idea of adding weight penalties to cars with larger displacements? I mean, in some sanctioned events, what's to stop somebody from running a 3.0L 4-cyl?
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Old Feb 12, 2004 | 01:58 PM
  #16  
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Default Re: Displacement Rules (CheezeFrog)

hasnt anyone ever seen the NIRA/NOPI rules. its says .7 lbs per cc. thats about the most equal way of doing it until they say max is 2.5 and weighs 1600lbs. then everyone will have a 2.5 or close and weigh 1600lbs just like the pro stock guys do.
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Old Feb 12, 2004 | 02:29 PM
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Default Re: Displacement Rules (L-B racing)

I like the NDRA rule.

And Pro Stock is not ready for a class split at all. If you can't qualify...go back to the drawing board. Thats part of the challenge. Not everyone should be handed a qualifying spot in such a competitive class.
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Old Feb 12, 2004 | 11:54 PM
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Default Re: Displacement Rules (4piston)

Right, the top qualifier to the bump spot has a .08 seond spread.
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Old Feb 13, 2004 | 09:48 AM
  #19  
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Default Re: Displacement Rules (FULLTHROTTLE)

i think he is reffering to all-motor when he says prostock.. not the domestic pro-stock.. i belive there has never been that small of a spread in the import world.
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Old Feb 13, 2004 | 01:14 PM
  #20  
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Default Re: Displacement Rules (dmotoguy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dmotoguy &raquo;</TD></TR><TR><TD CLASS="quote">i think he is reffering to all-motor when he says prostock.. not the domestic pro-stock.. i belive there has never been that small of a spread in the import world.</TD></TR></TABLE>

no i was reffering to the domestics. where the rulebook says like 2250 lbs and 500 ci. the imports arent ready because theres to big of a difference between manufactors motor sizes. but i think in 2-3 yrs it will be similar to the domestic rule.
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Old Feb 13, 2004 | 02:39 PM
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Default Re: Displacement Rules (L-B racing)

Personally I believe in the golden rule..... "Run whatcha brung slapnuts"......... Then get out and build it bigger and better if it still aint enough to win with..........

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Old Feb 13, 2004 | 05:49 PM
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From: wEsT of WattS...NoRth oF CompTon, CA
Default Re: Displacement Rules (fygtbug)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fygtbug &raquo;</TD></TR><TR><TD CLASS="quote">Personally I believe in the golden rule..... "Run whatcha brung slapnuts"......... </TD></TR></TABLE>

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