prodracing.com

Improved Touring cars are not limited by lift, they're limited by being the stock unmodified camshaft.

As such, they are not field-checkable, they need to be subjected to either comparison to a known-stock part and/or the optical comparator thingy that Topeka has.

Of course, known-stock examples likely don't exist any more for the vast majority of the cars.

Even if you were to start putting max lifts on the IT spec lines against which to spot-check them in the field, where are you going to get that info? The FSM (it's not in there)? The competitors themselves? If so then my ITB car (which can run in HProd) has a .575" lift cam stock.

It's one big ole loophole that someone can drive a truck trhough, and one of the big technical reasons Improved Touring has never been considered for Majors/National status.

Inclusions of other classes into your own carries a ton of baggage with it, most notably the very important need to keep on top of those classes' regs changes as well as your own. I watched some heads asplode this past weekend when some STL competitors suddenly realized that the STAC's allowance of all ITS cars also allows in 2.5L straight-5 VWs and 3L straight-6 BMWs. I tried to demonstrate the pitfalls of doing that by entering an ITS car in STL for the 2015 Daytona Runoffs; but for a couple of stupid driver errors I damned near put that car on the podium.

GA

Each car would need a line with cam lift /compression and weight . IMHO. To avoid the VW mk 3 deal that ruined ITB.

Basically like I stated earlier . L3 level of 10.5 compression, .425 lift and weight per CC.

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Mike Ogren/Protech Racing, http://www.FWDracingguide.com http://www.ogren-engineering.com/ 352.428-8983 mogren@tampabay.rr.com

Somewhat ironically the ITB Volvo 140 has .425" valve lift and 10.5 to 1 compression stock.

_________________
Sam Moore
SCCA competitor since 1983

What a coincidence?
How light can you get a 142? I built a couple and prepped a couple more . Seems like they were heavy .


Maybe we can list them @ 425 lift and 10.5 /1 and take off weight . With L2 chassis prep .
List them all and see if any show up and tweak the weights from there.
BMW 320, 318 ,2002
Audi 5 cyl
Volvo 140 series
VW Mk 3 . ( is close as IT prepped )
FWIW an ITB Volvo runs about 2;21 at Watkins Glen, Mid pack in HP . LR is about 2:16
Daytona . Mk 3 VW runs in the middle of the HP times.
So maybe IT weight is a good start . The Mk 3 would pick up 10+ HP with a good cam .

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Mike Ogren/Protech Racing, http://www.FWDracingguide.com http://www.ogren-engineering.com/ 352.428-8983 mogren@tampabay.rr.com

The dam has a leak!!!

(a.k.a, "...and it begins...")

SUBJECT: Errors and Omissions, Competition Adjustments, Clarifications, and Classifications
All changes are effective 5/1/2021.

3. #30132 (Hayes Lewis) Appeal of Request to Move Porsche 924 to HP
In HP Spec Lines, classify Porsche 924 (76-84):

1. #30350 (David Reiter) Change Classification of 84-87 Mazda 626 from FP to HP
In HP Spec Lines, classify Mazda 626 (84-87):

The Mk 3 Golf is 60#s too light at2325# It will put down 150 or more at the wheels. Should be 2400# .
The Mk3 runs in the middle of HP field in IT trim ..

The 626 is also too light by about 100# or a little more . Should be 2400# .

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Mike Ogren/Protech Racing, http://www.FWDracingguide.com http://www.ogren-engineering.com/ 352.428-8983 mogren@tampabay.rr.com

But we are still sceerd of Volvos???

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Sam Moore
SCCA competitor since 1983

No.

But 92hp (crank) Porsche 914s?

<shudder>

To help put some light on what you guys are talking about, all of these went into HP, and all with the same 11.0:1 & .425" allowance:
- Volvo 142/142E at a base weight of 2450lbs
- Porsche 924 (76-84) at a base weight of 2400lbs
- VW Golf/Jetta mk3 (93-98) at a base weight of 2325lbs
- Mazda 626 (84-87) at a base weight of 2300lbs



I think it should be moved up to EP, just to be sure...

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Kevin - ruckracing - '15 & '10 Runoffs FP Champion
Hoosier | AEM | Wilwood | Hasport | BrianCrower

They are all tooo light except the 142. The 142 has the least power potential of these.
Should all be 2450.

The 914 should fit of course .
My apologies to the class .

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Mike Ogren/Protech Racing, http://www.FWDracingguide.com http://www.ogren-engineering.com/ 352.428-8983 mogren@tampabay.rr.com