SGOGT4

That must have been right after they moved locations. They used to be up on Belmont for the last 7 + years. Enjoy the warm AZ weather!

nathanUK '81 930 G50

You think you wouldn't have took that car apart then after a while ?

Who are you kidding

cobalt

Although the rear valance has been slotted to vent heat, I would say that nothing was done if not to the contrary to reduce weight. The vin sticker shows a gross vehicle weight of 3418 which is about 200 pounds heavier than my 94. Also why did they use a G50/50 and not a G50/52?

nathanUK '81 930 G50

If the car wasn't lighter or seamwelded then I wouldn't bother to buy a Ruf. Would want to weigh it to see before parting with any £$£$£$£$

Wasn't the G50/50 stronger than the 52 ?
Maybe it saved having the shaft shortened and obtaining the different end cover.

cobalt

I believe the 50 used brass gears the 52 used hardened steel. That was what I was told but could be wrong.

nathanUK '81 930 G50

I have a feeling that they all are brass but can all be upgraded.

I know that the 996tt X50 option or the 996tt S has steel synchros.

Do you know what the benefit of brass is ? I can't seem to work it out.

Don't think they would last long in the 915

38D

Brass vs. steel synchros does not have to do with strength, but with faster shifting

nathanUK '81 930 G50

Could you please explain a little, ok a lot more ?

TIA Colin.

cobalt

I can say that both brass and steel have very high tensile strength although Brass is mallieable as were steel is not. I was told that the hardned steel synchros were considerably stronger but the sole purpose for the brass was to make for easier shifting for the non turbo market.

nathanUK '81 930 G50

So you mean that the brass is easier to force/squash into the slider ? I would have thought that the brass would wear very quickly compared to the steel and therefore the 915 would eat them up. I have to admit I have never seen inside a G50 type box yet... I have no intention of doing so, fingers crossed...

cobalt

I wish I could give you more specific info. The info I have is second hand so take it with a grain of salt. I was told that the factory wanted a smoother easier shifting tranny for the N/A market and the brass helped to achieve this vs the hardened steel. Brass is more durable than you might think especially if it is in an enclosed oil filled environment. In comparison to the steel brass would wear down as where the steel when forced would break before wearing. I would say when forced the brass would not hold up as well as the steel and that may be why the G50/52 is known as the strongest tranny Posche ever made.

38D

The 915 and G50 have two totally different synchrosin them. The 915 is Porsche Synchromesh and is basically a big ring that slows the gearset down as the shift is made. The G50 is Borg Warner style, which is more like a cone that slides over another smaller cone. I can pull some pictures tomorrow of both styles so you can see the differences.

nathanUK '81 930 G50

That would be great Colin, thankyou very much.

Thanks Anthony.