Drag Racing

Check this site out www.dragtimes.com

Forgot, go to events then to NIRA....

"There was a yellow 3rd gen bodied drag car that ran a 8.64 @ 155 MPH.A 2nd gen RX-7 ran consistant mid 10's. A 1986 300zx was running low 10's. There was a low 10 second Porsche, low 11 second Porsche, and a high 14 second brand new Carrera. An eclipse ran mid 10's before blowing up the tranny and leaving parts all down the track. I don't have time to write anymore text, so just check out the pictures and movies below..."

Guy racing a turbo 911...definitely groovy--

I can see that Juan's plans are to be in that picture too...well, for my buck, if you're going to do that, take off all sound deadening, and lighten your car.
I'm kinda thinking now that if I could do my car the way I want, I'd get it down to 914 weight--like 2200 lbs, bring the HP up to 300 or so if I could.

From what I've read on drag racing, while the 911 engine is over the rear wheels elminating tire screeching loss, there's a resonant bounce that occurs because of the rear weight over the back wheels, and I'm wondering whether very tight or very loose rear suspension could compensate fot this...
It seems to me with the rear bias, there must be a way to get good drag times out of a 911.



------------------
Kurt B
1984 911 Carrera Cabriolet
75 914 1.8

I downloaded the quicktime movie. That black C2 turbo is one fast monster. The trap speed on his run was about 10mph less than the silver car so he probably lifted off. Wonder what he would have done if he didn't lift - probably deep into 9 seconds.

930 Fan, I was at those races and the black car was running like a mother that car was built by the people that i use,later to find out that the car was running with a crack cylinder head and still was running 9s,The next race is on sept 29 and i plan to try to make that one if i can, my clutch is giving me some troubble so i have to fix that im somehow try to lower the compression to be able to run 1.0 bar of boost then i think i be ready.
Regards Juan

Kurt in these days 300 HP is nothing im living proof of that at 320hp so you will need 450 hp to be able to do some good numbers,anything else is a bleesing,about 450HP intercooler with NOS,Haletech,Polish Ported Heads,that should get us there..

This would be a good time for the Porschev bunch to chime in. Even a mild small block will produce enough torque to expose any shortcomings in the rear suspension. A low HP motor will get a 911 into the 12's. Maybe the two camps can work together for a change and benefit everyone that wants to race these cars, nomatter what the power plant.

My favorite - that silver widebody. Very Cool (couldn't get the film to run on my box).

Porschev? Arggghhhh Nooooo. But seriously Rarly, I humbly submit that I do not know too much about American iron. However I do have the C&D shootout in their Jan '00 issue between the Chevrolet Special Vehicles Camaro and the Ford Special Vehicle Engineering Mustang. Chev specs: 9.5 litres, 770bhp, 683tq, 3523lbs. Ford specs: 9.8 litres, 855bhp, 794tq, 3695lbs. Quarter mile times and mph with SLICKS: Chev 11.01/ 128mph ; Ford 10.55/ 135mph Any half decent rice burner with 20k in upgrades can rape those 9 litre monsters. Btw, both the cars broke down more than once during the test. Even the big money Lingenfelter and Hennessy Viper/Vettes can't crack 11 seconds with street tyres or 90hp/litre specific output. Sure, you could turbocharge it but what's elegant about forced aspiration on 6 litres+. I guess elegance must be a word that Porschevs' don't understand

Juan, please don't put NOS on your car. I feel that NOS is cheating plus you don't need it anyway as a turbo with cracked cylinder heads can run 9 seconds on road legal tyres. Good luck in upholding the flat-6 honour.

My politically incorrect reference to the Porschevs was to get their input on the rear suspension problems found when using high output motors. Only the V8 and modified turbo owners will have dealt with this issue. And of the two, the V8 camp should know more of how high torque effects the transaxle. 911s with big displacement and superchargers (Jack?) need this information.

930 Fan,I know that you are one of us!! BUT i could never get this thing to run 9s only in my dreams,that car had 750+ HP,and as you know on the street theres no rules only the strongest will survive so NOS is just a necesity unless that you have a better idea for the $,i just come from one of the honda camps,480HP Honda all for$ 7,000,it will make anyone depress a clutch for $80 Dollars from clutch master,for my car $1,200 from them,oh boy,whats wrong with this pic?

I agree Rarly! That silver one is sweet! What a beauty!

------------------
Jeff
1976 911S

[Colby]

Biggest problem I've had drag racing 911's isnt the suspension...it's the damn 915. It sure doesn't like to be shifted quick. The G50 guys will do much better.

Colby

[Porcupine]

Olds Toranado trans axle.

Shorty Powerglide with a Ford 9" ala rear engine dragster.
Contact Lenco and have them build a trans axle.

Well monster motors are nice but a good small block combination will run 10.50's all day long in a 2600lb car. And the motor will cost less than a rice burner and live longer. Speaking from experience of course.
And with a little more money in the heads 9.90's are easy.

I would pursue the automatic transmission route myself. One only has to look at the amount of stuff out for powerglides.
Besides a trans brake equipted automatic is just as fun as dumping the clutch.

Porcupine

[beepbeep]

juan:


Who are the folks who prepped black turbo?? Any webpage/phone nr? I have a friend who's into 911 drag-racing and desperately tries to come in contact with someone with more expirience...

Thanx!

[Colby]

In case you didn't notice, this thread is about 2 years old. I was a pud and while searching the archives responded to one (don't ask me what I was thinking....hehehehe).

Colby

[gregk1]

Jim Sibley who is a old 10 second VW racer from way back. He has a dragster with a Porsche motor in it And runs a chevy powerglide with a 5500 stall and a trans brake. I cant rember what Times he was running or what size motor but I think it was low 8's to high 7's But it leave's Hard and shift it once and run it thru no problem

[cmccuist]

The Porschev guys put 30-33mm torsion bars in the rear and 22-23mm in the front. It turns out the chevy engine with aluminum heads weighs about as much as the turbo engine with A/C. The Porsche is going to squat (like a vette) under hard excelleration. The trailing arm/torsion bar rear suspension just isn't as easy to hook up like the 3 link and 4 link suspension you can put on coil over rear ends or the slapper bars you can put on leaf springs. Guys are still going plenty fast obviously, but the skill required to launch is greater.

As far as the transaxles. The 915 is geared wrong for a V8, but is pretty stong - good for about 450 horsepower. The best option is the 930 box which is bulletproof - good for 700 horespower and is geared correctly even though it's a 4 speed. As far as the Toronado transaxle, the TH425 is indestructible, but weighs about 500 lbs! The TH325 weighs about 300 lbs, is a four speed with lock up torque converter and can be made to handle a lot of horsepower with hardened pump vanes and other mods. The trouble with the Toronado transaxle is there is a significant amount of mutilation (there, i said it - word most often associated with the V8 hybrids) required - you lose the rear seats. You basically end up with a "mid-engine".

The thread asked about suspension and getting better 1/4 mile times. The larger torsion bars are the simplest way to keep the 911 from squatting so much and consequently hooking up better.

Craig

[H20911]

okay.....I will bite.
the motor has about 450 hp and 425 tq.
turbo 4 speed
the nitrous and cheesey turbo(test fit) are not hooked up yet (because I think that I would grenade the engine because the Rods need to be changed to H-beams for the extra hp)
shooting for 700Hp and high 9's more will just break the trans.


s

[JuiceMan]

Holy Cow!!

H20: That is awesome man

[RarlyL8]

Hey Aquaman, haven't heard from you lately.
Very nice. Driven it yet?