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Cobalt - easy, this isn't a debate about whats hard or abusive. road racing is easy on a car? Any type of aggressive driving is "abusive".

since we couldn't see his 60' times for each attempt there is no telling which launch was best... But it is fun trying. Just like hitting the apex just right
Old 02-05-2011, 11:14 AM
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Best to have the tires spin than the extra strain that wider and/or sticker tires would put on the drive train. The 930 4 speed is rated for around 750HP as I have read, under I would expect road race conditions. Drag race conditions may not have been considered for the drive train. Also that estimate was derived with Tire technology from the late 70s. I often think of putting a 930 on the strip as I have been there before.
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Last edited by voitureltd; 02-05-2011 at 02:30 PM..
Old 02-05-2011, 01:59 PM
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My 60 time was better with the wheel hop 2.408 but I had to shift very early to second due to the pain of feeling the whole car shaking and the car bogged down due to the early shift giving me a 330 of 6.951. The track was extra sticky due to many low 10 second cars racing that day. I would have prefered a less sticky surface to allow some wheel spin to ease off the line.
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Old 02-06-2011, 06:21 AM
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Quote:
Originally Posted by drmatera View Post
Cobalt - easy, this isn't a debate about whats hard or abusive. road racing is easy on a car? Any type of aggressive driving is "abusive".

since we couldn't see his 60' times for each attempt there is no telling which launch was best... But it is fun trying. Just like hitting the apex just right
It's all good, although hitting the apex consistently in 3.6T is far easier than launching one from a dead start. The 964 turbo is probably one of the most difficult of all Porsche's to launch consistently and obtain times worthy of the car. The car is far faster than it's 1/4 mile times would have you believe. 60-130 is a truer test of it's abilities and with some mods becomes much faster. I personally find no fun in trying to launch a 3.6T, a rolling start IMO offers a better experience without frustration.
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Old 02-07-2011, 06:09 AM
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The launch would be a lot better if these motors had a heavy, large diametered flywheel to provide momentum....but they don't. It's all motor to launch these cars. Then you mix in low compression and small displacement resulting in really poor launching ability.
Old 02-07-2011, 07:19 AM
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Quote:
Originally Posted by IMONBOOST View Post
My 60 time was better with the wheel hop 2.408 but I had to shift very early to second due to the pain of feeling the whole car shaking and the car bogged down due to the early shift giving me a 330 of 6.951. The track was extra sticky due to many low 10 second cars racing that day. I would have prefered a less sticky surface to allow some wheel spin to ease off the line.
your first mistake is shifting early, if it wheel hops just lift off the throttle till it quits then keep going thru first gear. The biggest mistake novice drag racers make is the early shift due to wheel spin or hop. Just because the engine is at 6000rpm doesn't mean the vehicle speed matches it. A shift to 2nd gear at 10 mph will result in horrible ET's.. I figure if you are going to put the car thru the trauma of a launch you might as well get some good results... But as I said before my car has cut 1.77 60' times and i've not had any wheel hop issues.. technique
Old 02-07-2011, 08:16 AM
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ps. my 330' times are in the low 5's
Old 02-07-2011, 08:18 AM
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1.77 60-ft. times in insane for these cars!!!

I would have hit 11.9X's with my car hitting that number.
Old 02-07-2011, 09:53 AM
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yeah, i ran an 11.79 on that pass. It was a great night at the track as I lined up with just about all of the modern day "muscle cars" from the big 3. Kicked each one of their butts as not one of them ran better than low 12's. I wish I would have seen the look on the face of the GTO driver as I put that 1.77 60' on his ass... I know he was expecting different results judging from the drag radials he had on the car.
Old 02-07-2011, 11:32 AM
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Nice
Old 02-07-2011, 12:09 PM
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Went back today, last time it turned out I had boost leaking from the turbo to IC hose. Here my best result out of 4:




The car is a '94 turbo 3.6 with cat-bypass, LWFW, and stock boost.
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Old 04-23-2011, 09:14 PM
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I've been looking for a thread that an Australian guy posted up a year or two ago. (He had a pretty Stock, GuardsRed, 1978-88 930 and was getting some pretty representative times.)

If I recall correctly, 13.3 Seconds at 106mph with a 300BHP 4-speed car.. So with a more aerodynamic, 380BHP, 5-speed car, I think you should be into the high 12s!

Last edited by tj930; 04-24-2011 at 06:10 AM..
Old 04-24-2011, 06:07 AM
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tj930, I am sure my car with a great launch and perfect shifting should be good for 12.7-12.8, but I am not abusing the car on the launch. Actually, there were only about 6 to 8 cars doing passes so we had the track all for ourselves but I called it quits, a transaxle fix is not worth having a 12's slip.

I have the Zeitronix log for a 13.2 pass this same night (this one the car lost grip on 1st and I had to ease off) and it shows I am shifting at 6,144, so it seems I am shifting a little short, my tach sure looks like I am hitting more like 6,400 - 6,500. Not sure what to trust.

The other two passes where 13.5 and 13.6 and these were rolling out on first. I am waiting for the right time $$$ to order rarly headers and HFS and see if I can hit 12's rolling first, I will be happy with this and so will be the transaxle :-)

thanks for you input tj930.
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Old 04-24-2011, 07:00 AM
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I had a 'racing' (Kevlar) Clutch in my car at the time and, using a G-Tech Pro, I got a time of 12.8 seconds @ 109mph. But I don't think the tarmac was perfectly level (might have been a bit of a downhill dip) and one really doesn't really want to give one's car's transmission that kind of horrendous abuse very often..

But.. If you did.. I think you'd be getting 12.8s easily! (The 3.6 964 turbo is a beast! )

P.S. I love Aryton Senna, too
P.P.S. If you ever want to sell it, I know a guy in England who would love to buy your 3.6 engine!
Old 04-24-2011, 08:51 AM
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Brian: What would a 5 speed 3.4 930 with 514FWHP and 2650 lbs do? High 11s?
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Old 04-27-2011, 09:02 AM
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Quote:
Originally Posted by tj930 View Post
I've been looking for a thread that an Australian guy posted up a year or two ago. (He had a pretty Stock, GuardsRed, 1978-88 930 and was getting some pretty representative times.)

If I recall correctly, 13.3 Seconds at 106mph with a 300BHP 4-speed car.. So with a more aerodynamic, 380BHP, 5-speed car, I think you should be into the high 12s!
Hi Tj930, Not sure if this was what you are looking for?

This was my car at western sydney international drag way on August 2010.

Check the link below. Cheers.


Quarter mile results.
Old 04-27-2011, 09:04 PM
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Hi Tj930, Not sure if this was what you are looking for?

This was my car at western sydney international drag way on August 2010.

Check the link below. Cheers.


Quarter mile results.
Hi Andy - the very fellow!

I'd got that all wrong, hadn't I, mate? - you had a very 'unstock' car and had returned some absolutely blistering times! (11.396 @ 127.71 MPH )

I just remembered that picture of your car, sat on its haunches, as you launched it off the strip - quality!
Old 04-28-2011, 05:18 AM
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Hello guys if you care to see the 13.2 pass, see the smoke shooting out the back, thats when I had to let go due to wheel spin and put the power back on:

See minute 4:48 if you just want to see the 965.

YouTube - Sneaky Rental 23 Abril
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Old 04-30-2011, 12:19 PM
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Here are some stock magazine times for reference.

]





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Old 05-02-2011, 10:52 AM
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Wow, thanks, this is going to my archive...going to read it now.
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-Ayrton Senna-
Old 05-03-2011, 04:37 PM
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