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hayeslewis
Joined: 21 Aug 2011 Posts: 74 Location: Alexandria, VA
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Posted: Fri Feb 21, 2014 2:35 pm Post subject: racing 34 years ago-More 924 glory! Showroom Stock A |
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http://www.youtube.com/watch?v=COb501doIBA
Maybe we should go back to real street tires in IT. _________________ Hayes Lewis
1979 924 HP
1979 924 ITB/HP???
2007 Armada
2013 Hyundai Elantra
1972 MG Midget Vintage project
Unstable electrified three wheeled Bicycle truck |
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Harm
Joined: 02 Apr 2009 Posts: 1373 Location: Holland
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Posted: Fri Feb 21, 2014 11:20 pm Post subject: Re: racing 34 years ago-More 924 glory! Showroom Stock A |
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Well balanced Toofah pays off!
…less squeaky!
Cheers,
Harm. _________________ Porsche 924 NA 1982 LY7A/A3A3 _ Greater driving pleasure never harmed anyone. |
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Cedric
Joined: 27 Aug 2004 Posts: 2600 Location: Sweden
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Posted: Sat Feb 22, 2014 11:48 pm Post subject: |
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Thanks for the link, great slippery racing Anyone know what the rules were? _________________ 1980 924 Turbo
www.instagram.com/garagecedric/ |
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924RACR
Joined: 29 Jul 2001 Posts: 8794 Location: Royal Oak, MI, USA
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Posted: Sun Feb 23, 2014 12:05 am Post subject: |
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Very cool, thanks.
Just got back from there Thursday (work)... they repaved a few bits, mainly T10 that I recall, I think also T1. But the layout's vastly different now, with a chicane (T10a-b) at the bottom of the dip, before the bridge. I didn't experience it back then, but coming down the hill now, even in an IT 924, is an easy affair; while it's something like a 4-story drop, it's flat the whole way once you get used to it, pretty easy.
We are doing about 75mph at the top of the hill, going under the bridge, but 100mph by the front straight!
Rules: bone stock, pretty much, adding only safety equipment. Of course, you'll note that the 924's are racing against SAAB and Rustang turbos, and turbos in the 80's were notorious for turning up the boost - that was before they could really police the stuff well.
You can really see how the 924 just didn't have much for power against those cars, but did have the suspension; even the low drag design didn't prevent them from getting stomped on the straights, but with a good enough driver and setup, you can eventually carry enough speed to build enough of a gap and stay safe...
Fun stuff... _________________ Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
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924RACR
Joined: 29 Jul 2001 Posts: 8794 Location: Royal Oak, MI, USA
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Posted: Sun Feb 23, 2014 12:06 am Post subject: |
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PS - you can also see just how crappy a suspension the Rustangs have; they push hard, tires go off quickly, and it's all over...
Other points on the track changes since this era... the pit-in lane is now very separate from the track, so you can't run wide and use it, jumping the rumble strips, like the guys in all these videos do. Rather, they split just after the crest of the hill. You'd be driving through the grass instead.
Conversely, Turn 5 (which is the last LH turn after the esses which go down, then up the hill to T5) followed by a short straight... at the time had no runoff, just dirt; now it has a huge paved runoff area and grave tramp. Pretty exciting to jump those curbs - you catch a lot of air. _________________ Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
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Cedric
Joined: 27 Aug 2004 Posts: 2600 Location: Sweden
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Posted: Sun Feb 23, 2014 12:21 am Post subject: |
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Stock wheels with free shoice of tyre?
Looks like a pretty even grid, even though the cars are very different, i like that . Must have been incredible hard to control the turbo guys, especially back then when racing with turbo engines was pretty new thing at this level.
What was the "A" implying, some sort of engine size limit, cost limit ? _________________ 1980 924 Turbo
www.instagram.com/garagecedric/ |
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Harm
Joined: 02 Apr 2009 Posts: 1373 Location: Holland
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Posted: Sun Feb 23, 2014 12:21 am Post subject: |
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924RACR wrote: | Rules: bone stock, … |
So for clarification, the 924 US specs?!
Thanks for your insights Vaughan |
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924RACR
Joined: 29 Jul 2001 Posts: 8794 Location: Royal Oak, MI, USA
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Posted: Sun Feb 23, 2014 12:33 am Post subject: |
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Yes. Way low on power, as can be seen!!
There was SSA, SSB, SSC - all Showroom Stock, but different performance levels. A was the fastest... and I think there may have later been faster classes added above, Chuck could probably confirm.
These days (recently) those classes are gone, rolled up into Touring (T1-3) and another class that slips my mind at the moment... but they're no longer stock.
Just the same as we have ITA, ITB, ITC, but also ITS and ITR which are newer and progressively faster, not slower, than ITA. Our 924's run in ITB.
Oh, to clarify - a particular grouping of classes, like SS or IT, would have the same prep rules across the range, just different speeds (and so of course cost to go play). So my ITB car is built to the same rules as an ITS or ITA car, but can't run as fast; the 944 or 2nd gen RX7 run in ITS, and the 944 S2 can run in ITR... _________________ Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype |
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fiat22turbo
Joined: 18 Jan 2006 Posts: 4040 Location: Portland, OR
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Posted: Sun Feb 23, 2014 2:36 am Post subject: |
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BTW, on the boost thing. Shelby and Dodge's factory cars in 87 and 88 had reprogrammed ECUs that would alter the amount of boost depending on how long the key was in the on position before starting the car.
They also had cheater differentials that would act like an open diff if you lifted a wheel and spun it by hand (as was the standard tech check) but would lock under power.
So you can see why the SCCA eventually shied away from boosted cars in many of the classes as it was impossible to police without considerable overhead.
As to the tire question, in those days they had to run the stock tires from the showroom. Many figured out early on to shave them to increase traction, and I suspect some of the manufacturers probably even created factory options that provided some advantages.
On the Mustang, yes their suspension is a known issue, has been since the original Falcon Based cars in 64. Entire industries have sprung up to fix the Fix body suspension's poor front geometry and binding 4-link rear axle. _________________ Stefan
1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose) |
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emoore924
Joined: 13 Apr 2004 Posts: 2815
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Posted: Mon Mar 03, 2014 1:45 pm Post subject: |
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Them guyz wuz DRIVIN' |
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