Wow, that's a faster 0-60 than I thought!

[cowtown]

I've had my somewhat ratty '75 911S for a week now, and decided it was time to G-Tech it for 0-60 and quarter mile. The car's got 187K miles on a rebuilt 2.7, SSI heat exchangers and sport muffler, and K&N filter.

The car is light, because I've taken off a bunch of stuff. No tar on the floor (12lbs!, see my other post today for the gory details), no rear rubber bumpers (7.5 lbs each!), no smuggler's box AC condenser/fan (12lbs!). Oh yeah, I also had only the driver seat in the car (40 lbs? for missing pass. side 89' Carrera 4-way power seat).

Weight before I took all this stuff off was 2465lbs, so today it was around 2385. I weigh 195, so total weight approx. 2580. Gas tank was just about empty. 205/50-16 tires all around on 7x16 Fuchs.

Factory 0-60 Time for this car, stock, was low 8-sec range if I remember correctly.

I'm really curious what 0-60 and Quarter-Mile time you think this car SHOULD run given the above information. It was a LOT faster than I thought it would be - I'm sure the SSIs have a lot to do with it.

Please chip in your guess, before looking at my GTECH runs (in the next message).

Thanks!
Colin

[cowtown]

Okay, I took six runs on the road - down-back-down for 0-60, then down-back-down for quarter mile, all on the same stretch of road. Average of three runs:

0-60 5.98sec.
Quarter Mile 14.7sec. - I didn't write down the speeds, unfortunately. They were in the low to mid 90s.

Anyway, it shocked me how quick this car is, and even if the 0-60 time is .5 seconds optimistic, I'm a happy guy! I'm starting to wonder if there is a short gearset or something in it, as I don't have complete records. But I did hit 60mph in second gear....

Colin

[Eric Mckenna]

Damn! Colin...
That scooting out pretty quick for that ole Gal!
great to hear that the weight played such a huge factor... I still think that removing weight is the cheapest best performance upgrade one can make to the car.
Cool! great post!
Eric Mckenna
78SC

[NYSCAR]

That's totally believable with the mods you have on the 2.7 combined with the *significant* amount of weight you've stripped from your car. I've always found the gtechs to be fairly accurate (err consistent .2-.3 sec optomistic compared to actual timeslips) as long as you use them correctly (long stretch of flat highway, try not to jerk hard on the launch).