911T weighed at last

[steveW]

My litlte 2.2T - which I do adore - got weighed today and came in at 945 kg, or 2083 lb, with just less than half a tank of fuel and without spare wheel, jack etc.

It is almost standard apart from two small silencers instead of the std heavy thing and a racing seat for me (the driver). There's no lightweight fibreglass bumpers yet and I was rather surprised at how light it is.

The scales were at a race track and are regularly calibrated.

Cheers

[Raymond]

gotta love that! that's as much as a VW bug of the same vintage.

[TimT]

That sounds about right, Im trying to make my car weigh less than 1800#

[tobluforu]

How much does a 72 911t weigh?

[steveW]

TimT - my aim is to get to the magic 840kg of the 70-71 racing ST versions.

I've got fibreglass front and rear bumpers and passenger seat to fit and will also be looking at perspex rear windows as well as lightweight bonnet (hood).

I suppose both sunvisors and glove box lid will also go as will the std airfilter box.

I'm going to weigh it again as soon as I've done the bumpers and seat.

[CamB]

Ties in with the weight of my '69, which was a (potentially inaccurate, but you have to assume it is ok) just over 1000kg with an SC engine and transmission, an external oil cooler etc and mostly full interior (no sound deadening) but no gas.

[Bill Douglas]

That's nice and light Steve

When I had my SC in bits, one thing I noticed is how much the doors weigh. The (SC) alloy bumpers didn't wiegh much and the hood and engine lid didn't wiegh much, but the doors, geez.

911R doors seem like a good idea, or lose some of the excess metal on the inside of the doors. The guy who machined some new hinge bushes for me said they wieghed twice as much as any Jap car doors he had worked on.

[Jack Olsen]

I'll be the first to say that sounds suspiciously light for an early car without significant work done to lighten it.

The scales were at a race track and are regularly calibrated.

I've only ever weighed my (1973) car on two scales. Even with race seats, fiberglass body panels and lots of aluminum replacement parts, it never came in under its manufactured stock weight (2370 pounds), since any options the car shipped with add to that stock figure.

The two certified scales produced figures that were fully 200 pounds apart, too.

To me, scales are like dyno's -- they're useful for an apples-to-apples comparison of the same car with a 'before' weight compared to an 'after' weight, but not much else.

Early cars are very light, bu I honestly don't think the weight of the exhaust and one seat are going to be enough to produce the figure you were given.

[Phoenix-MN]

I tend to belive the 2083 lbs. Years ago I weighed my 70 T on the scales at BIR-Minnesota and my car was at 2100 lbs (plus/minus scale variations) Early T's a light in stock form

[911nut]

Originally posted by Bill Douglas

When I had my SC in bits, one thing I noticed is how much the doors weigh. The (SC) alloy bumpers didn't wiegh much and the hood and engine lid didn't wiegh much, but the doors, geez.

SC doors have a steel guard beam built into them to resist side impacts. A pre'73 (I think, I'm not sure which year the standard took effect) door would be lighter but I wouldn't use it based on safety reasons unless a roll cage is installed.

PB

[CamB]

Ummm, Jack - you got a big-ass engine back there and 2 oil coolers and air-con and a 915 transmission and wide wheels and heavy tyres

Or was that the weight before the fun started???

[Jack Olsen]

I don't hold my car up as an example of what a 73 should weigh. Almost nothing is stock on my car.

But a 70-71 911T weighs 2250 pounds, with no options on it whatsoever. That means no sunroof, power windows, leather interior, or even S trim.

167 pounds of weight savings, from a muffler and a lightweight seat, is not possible, in my opinion. But it could be that I misunderstood the original post.

My point is only that scales, like dyno's, are generally not as accurate as we think they are, especially in the unusual weight zones our cars fall into.

[cegerer]

At 945 Kg (2083 pounds), you're very close to the weight of a 73 RS-H. These were the lightest RS's (yes, lighter than even the M-471 RS 'Lightweight'!) at 900 Kg (1985 pounds) and extraordinary measures were taken to reach that weight level for homologation purposes: thin body sheetmetal, thinner window glass, narrow 80-series tires, no undercoating, fiberglass bumpers, 1-piece lightweight racing seat, RS door panels, no glove compartment door, no radio, no rear jump seats, no carpet, etc., etc. So I'm not sure how you did what Porsche engineers were unable to do - maybe there is more than just the racing seat and lighter muffler removed from your car???? -- Curt

[304065]

I agree that the variance between sets of scales can be high. I've overheard discussions at the tech area where the owner says, "I had it weighed at my shop and I came in over weight" and the tech people say, "Great, but if you want to race HERE you better add 100 pounds, or you will be running in the appropriate GT class!"

For comparison purposes my own car is built on a 1971 911T tub made by Karmann, with fiberglass "S" spoiler, aluminum "S" calipers, stock steel rear bumper, steel rear banana arms, safety devices cage, Momo Fiberglass Seats and an ATL 17 Gallon Fuel Cell. Race weight with 1/3 fuel is 2294 pounds, class limit is 2249. I think I can shave a few pounds by going to a fiberglass rear valance and aluminum banana arms.

Late at night I allow myself to dream of the next car, a GT-5 911R Clone, with 220 HP from a 2.2 liter, 1800 pounds. Cars of similar spec are using mag cases, carbon fiber EVERYTHING, Lexan windows, minimal wiring, everything stripped out. I think 1700 pounds is possible but it will take $$,$$$.

Most of you guys have already seen Calzia's weight reduction page but here's a link: I love this because it represents a scientific approach to weight reduction.

http://early911sregistry.org/jCalzia.html

[steveW]

All of you make sense - I too am surprised at how little it showed on the scales. The scales at Kyalami are supposedly accurate and the car was positioned correctly (it is a large platform scale, not corner weight type).

I do want to check it again before I do anything else to the car, but my lightweight fibreglass bits are waiting and we have a long weekend coming up.

One thing though, my car seems quite unique in that it has an ally rear panel (between the bumper corners and the bootlid appears to be ally as well. The car has also got a rear sway bar, but not a front one, and as far as I know the car has never been modified.

Maybe it is a special one off lightweight worth $$$$$$$$ - likely bet!!!!