924Board.org

[PORSCHEV]

The term is often used in drag racing but sometimes on the track as well. I am using the term in a literal sense using a sand bag of 55lbs to try and counterweight that dam 40 degree angled engine. Did some test runs today with decent results although I blew out two more slicks I only have some 3/4 worn toyo proxies up front now.

Update on the Audi TB with the piper cam= much better performance. Once I get the right dizzy I will be really happy. Looking for a header so if anyone has one to part with let me know. I am still racing with 6 cyl sportsman class cars and have moved up to a solid 4-5th each race day...so the small improvements are reeling in those 250 hp cars.

Having fun guys..thats all that matters!
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1976 924
5 lug conversion, 17'C2 wheels,custom body work,327 vette engine.

1978-#53 "D" track racer.

[Rasta Monsta]

You might try bolt-in plates instead. . .often used for ballast in road racers.
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Toofah King Bad

• WeiBe (1987 924S 2.5t) - 931 S3

[RC]

Did you allow for the weight of the driver in the LH seat?
Adding weight doesnt sound like a good idea to me but sure other racers have some clues to help.

Would think its much better to rearrange the weight you have.
What side is your battery, fuel cell, etc on and how much do they weigh?

[PORSCHEV]

The sand was just an experiment. I will be getting bolt in lead ballast and that way I can get it down low.

The battery can't be located in the engine compartment therefore it is located directly behind my seat in a secure battery box and strapped down.

The fuel cell is also on the left side and it directly in line with the rear wheel.

When I brake the car on corner entry the front left tire just locks up because it is just barely touching the pavement surface. Then when I am hard on the gas in the middle of the corner I am lifting the front left at times. With the 55lbs of weight it has no more brake lock up and the car feels like I am steering with 2 front tires instead of just 1.
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1976 924
5 lug conversion, 17'C2 wheels,custom body work,327 vette engine.

1978-#53 "D" track racer.

[924RACR]

On the subject of headers... I blew another MSDS one out at Mid-O a couple of weeks ago - mild steel headers and header wrap don't mix!!! Was only 2 yrs old.

I scavenged a used one from Dan B to finish the season... but I think this winter we will have to create a new design; this one's rusted a good bit, and I have my doubts about how long it'll last. I'd like a new stainless one, possibly 4-1 stepped design. I want something durable! Will keep y'all posted...
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

[Vince Ponz]

Stahl headers are the best but cost more. I had a the one vaughn had and busted it in short time. The Stahl header lasted 13 years and the second one about 6 years.
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"Never let them see you sweat"
77.5 924 modified track car
79 931 Euro stock
88 924S SE
87 911 Targa stock

[ideola]

[Lizard]

You guys should get the headers ceramic coated inside AND out.
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3 928s,

[924RACR]

[ideola]

[924RACR]

The usual... won all 3. Sucked, though; I was very fast in qualifying and the first race, but got stuck behind some slow RX7's on Sunday and was at risk of losing the last race, I was held up so bad. Kinda annoying. Running 1-2 seconds slower than I should've been.

Car was perfect, though, plenty of speed capability.
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Vaughan Scott
Webmeister
'79 924 #77 SCCA H Prod racecar
'82 931 Plat. Silver
#25 Hidari Firefly P2 sports prototype

[emoore924]

I recommend Jet-Hot Sterling. I have it on the race car and the turbo. The turbo just had it put on (see my other threads on that topic) and so far so good. I put it on the race car on a new Bursch header in about 1994. No problems. None. Probably 5,000 racing miles.

Again. I happily recommend Jet Hot.

YMMV

[Lizard]

http://www.koolcoatceramiccoatings.com/enginecoatings.html

This is what a few of the guys in the area have on there cars. And what I will have my turbo manifolds done in.
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3 928s,

[Cedric]

This is why a race cars normally goes thru "corner weight". Google it and you will find more. Weighting down seems like a bad idea. Why cant you move the battery to the other side? And relocate fuelcell and so on. After you have done what you can with moving things around its up to suspension ride heigth adjusments to balance the weigth between the for corners. The most important seems to be to get the weight difference on the diagonals as small as possible..
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1980 924 Turbo
www.instagram.com/garagecedric/

[PORSCHEV]

The fuel cell and the battery are both already on the left side. So I couldn't gain anything by moving them. When you add more left front spring rate..it tranfers diagonally to the right rear. I tried this and would spin out quickly.

By adding weight to the left front it takes weight off the right rear and let me get into the corner faster and stops so much weight transfer. Thats my theory and the stop watch agrees that it is 3/10ths faster then without the weight. I have the car dialed down to a 19.30 ..but thats still 3/10ths slower then the lead lap 6 cyl cars.

I have decided to take next year off from racing until class formations can be resolved.
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1976 924
5 lug conversion, 17'C2 wheels,custom body work,327 vette engine.

1978-#53 "D" track racer.