Show full size 924Board.org
Discussion Forum of 924.org
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
 Technical FAQ924 FAQ (Technical)   Technical924 Technical Section   Jump to 924.org924.org   Jump to PCA 924 Registry924 Registry

racing 34 years ago-More 924 glory! Showroom Stock A

 
Post new topic   Reply to topic    924Board.org Forum Index -> 924 Racing Today
View previous topic :: View next topic  
Author Message
hayeslewis  



Joined: 21 Aug 2011
Posts: 74
Location: Alexandria, VA

PostPosted: Fri Feb 21, 2014 2:35 pm    Post subject: racing 34 years ago-More 924 glory! Showroom Stock A Reply with quote

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
Back to top
View user's profile Send private message
Harm  



Joined: 02 Apr 2009
Posts: 1373
Location: Holland

PostPosted: Fri Feb 21, 2014 11:20 pm    Post subject: Re: racing 34 years ago-More 924 glory! Showroom Stock A Reply with quote

Well balanced Toofah pays off!
…less squeaky!


Cheers,
Harm.
_________________
Porsche 924 NA 1982 LY7A/A3A3 _ Greater driving pleasure never harmed anyone.
Back to top
View user's profile Send private message
Cedric  



Joined: 27 Aug 2004
Posts: 2600
Location: Sweden

PostPosted: Sat Feb 22, 2014 11:48 pm    Post subject: Reply with quote

Thanks for the link, great slippery racing Anyone know what the rules were?
_________________
1980 924 Turbo
www.instagram.com/garagecedric/
Back to top
View user's profile Send private message MSN Messenger
924RACR  



Joined: 29 Jul 2001
Posts: 8794
Location: Royal Oak, MI, USA

PostPosted: Sun Feb 23, 2014 12:05 am    Post subject: Reply with quote

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
Back to top
View user's profile Send private message Send e-mail Visit poster's website
924RACR  



Joined: 29 Jul 2001
Posts: 8794
Location: Royal Oak, MI, USA

PostPosted: Sun Feb 23, 2014 12:06 am    Post subject: Reply with quote

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
Back to top
View user's profile Send private message Send e-mail Visit poster's website
Cedric  



Joined: 27 Aug 2004
Posts: 2600
Location: Sweden

PostPosted: Sun Feb 23, 2014 12:21 am    Post subject: Reply with quote

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/
Back to top
View user's profile Send private message MSN Messenger
Harm  



Joined: 02 Apr 2009
Posts: 1373
Location: Holland

PostPosted: Sun Feb 23, 2014 12:21 am    Post subject: Reply with quote

924RACR wrote:
Rules: bone stock, …

So for clarification, the 924 US specs?!

Thanks for your insights Vaughan
Back to top
View user's profile Send private message
924RACR  



Joined: 29 Jul 2001
Posts: 8794
Location: Royal Oak, MI, USA

PostPosted: Sun Feb 23, 2014 12:33 am    Post subject: Reply with quote

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
Back to top
View user's profile Send private message Send e-mail Visit poster's website
fiat22turbo  



Joined: 18 Jan 2006
Posts: 4040
Location: Portland, OR

PostPosted: Sun Feb 23, 2014 2:36 am    Post subject: Reply with quote

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)
Back to top
View user's profile Send private message Visit poster's website
emoore924  



Joined: 13 Apr 2004
Posts: 2815

PostPosted: Mon Mar 03, 2014 1:45 pm    Post subject: Reply with quote

Them guyz wuz DRIVIN'
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    924Board.org Forum Index -> 924 Racing Today All times are GMT + 10 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group