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So I'm sitting at a tire place getting some new tires on the '84 now that I can actually drive it, and thought I could get a collective opinion on this setup.
This shark was the one used by the factory back in '83 to test the reliability of the 928 by running for 24 hours at full speed. This was taken at an auto show in Frankfurt.
The stance and tire size looks great but more than that I figured if the Porsche engineers set it up for that kind of testing it would be good enough the '84.
What sizes do you guys think are on this one? Any modifications to get it there?
What he said ^^^ ... Those are forged Club Sport wheels (smooth curve where the spokes meet the rim, rather than a step).
I believe they were 7.5 x 16 ET65 fronts and 9 x 16 ET 52.3 rears but I may be mistaken.
I agree that those look perfect. But did CS wheels exist in 1983 or were those fitted later?
They are not D90 wheels but rather Club Sport wheels.
These have a lip like the Design 90, I don't think the Club Sport wheels have that. They look more flush. I might me mistaken, just using my phone for this.
What he said ^^^ ... Those are forged Club Sport wheels (smooth curve where the spokes meet the rim, rather than a step).
I believe they were 7.5 x 16 ET65 fronts and 9 x 16 ET 52.3 rears but I may be mistaken.
I agree that those look perfect. But did CS wheels exist in 1983 or were those fitted later?
Must have been changed out. I think you are right about the time frame. If I was the owner of this one, I wouldn't have messed with it.
WOW! That is a lot of wheels. However, you need to look more closely. As Jim and Sue point out the transition of the spokes to the rim is significantly different. The D90 wheels have a blunt transition under the outer face of the rim while the CS wheels have a smoother transition from their face to the face of the rim. Look also at the small relief cut or groove around the outer perimeter of the CS wheels at the openings. They are the same as the outer part of the opening of the flat dish wheels commonly called man hole covers. I think the CS wheels are derived from the man holes, but have different widths and maybe different offsets from the man holes. This relief cut or groove is missing on the D90 wheels.
You guys are great! Thanks for the replies. Hard to see on this little screen. It's nice to have a target for everything when a project gets off the ground... Speaking of which.
New shoes going on now. Probable the first "new" equipment she has gotten in years.
You can see the difference in the spokes on CS vs. D90 when viewed off angle the CS spokes curve out to meet the rim, vs. the straight spokes and more pronounced block-y rim lip on the D90.
Its hard to see just where they have lifted your car from or what it is lifted by, but a very common mistake made by tradespeople in the auto industry, with these cars, is to assume that the longitudinal frame-looking member under the car and inboard of the rockers is the frame of the car and suitable for lifting. However it is only a sheet metal hat section stiffener for the driver and pass floors. It is not suitable for lifting. In fact it will be unusual to find that your hat sections have not already been significantly deformed from various lifting. Many or most are.
There are four particular lifting points just under the rocker panels for lifting, each with an elongated hole in it where the little jack fits that came with the car. Did you get the jack? If not I have a few of them around here. I buy then on eBay when ever they show up for around 30 to 40 bucks. I try to carry two of them with me because it is easier to lift the whole side of the car rather than just one corner to change a tire. The lift points are just behind the front wheel wells and just forward of the rear wells.
The large rubber looking pads that they are lifting your car with, probably on the hat sections, is probably not doing any damage, but when they use a floor jack there it will bend them.
Regarding the lifting points, I was under the impression that when using a hoist you're supposed to use the rear axle control arm bracket instead of the jack pick-up point (as stated in the WSM). Or maybe both are good for lifting.
The Club Sports are forged aluminum much stronger and lighter BUT BIG BUT they were very expensive.......and still are Design 90s are cast aluminum like phone dials or the GTS rims and are far more likely to get bent...
01-03-2015, 02:02 PM
Design 90 wheel size? Best guess.
Design 90s are cast aluminum like phone dials or the GTS rims and are far more likely to get bent...
