Rickard 993 Turbo

the Best way is this... Mark you messure the for ex the front RSR upright, take a picure put some messure in paint, i have a 08 cup front upright here, then we can compare..

This is super intressinting and all evidence up to now is that the 997 cup upprights are the same except for caliper spacing..But i love to se diffrence if yes i need to uppgrade ASAP...

mathisengineering

Richard,

You are correct that the RSR has a full floor so you can't measure from the sub frames and lowest bolt heads like you do on a cup car. You measure from points on the floor that are almost exactly the same heights as the points on the cup car. I'm not going to argue about how far they differ because it's as close as Porsche can get and it's very close. I do know the RSR is lower than the cup car (big news flash on that).

The simple truth here is that there are many cup parts on RSR's. If the uprights were the same, the part numbers would be the same like many other things on these cars. They arent the same numbers, they aren't the same parts and they don't work the same way. I don't know the differences between every RSR and cup part accross all the car models so I'm simply explaining what's involved. The pictures are very good so folks can compare what they have and figure out what may change without a lot of extranious guessing and bloviating by myself or others.

Taisan Porsche

Mark,
thanks for taking the time to explain. I have design background in touring car and we test a of of our calculation on custom made uprights, subframes, to lower the ride height without affecting original static & dynamic geometry. If oem design was not good, we will fabricate a suspension that has a better camber gain underload.

I do understand that simply lower the height without moving spindle or subframe mountings, will cause the roll center to move down, so severe in come case it is in the earth.

I am pretty sure I will send you mails in the future asking parts this and that.

Have a good day.
Sam

Rickard 993 Turbo

I understand what you mean, the part nr are not the same becouse of the stud spacing are diffrent thats why there is a diffrent part nr, same with some other small stuff that differs..

And the heigt from the bolt to the floor is within 10mm front but att the rear its alot diffrent..

The pictures are showing what i say, but it would be super intressting if someone can take messurement so we can have hard facts...

th

mathisengineering

Rickard,

We can work on measuring them to compare spindle height etc. The issue is that it's hard to do because of the "king pin" angle. Nothing is in the same plane or even perpendicular to each other. If you want to pay for shipping and send me your cup upright, I'll use a coordinate measuring machine I have here to get a good number between the two before sending it back.

Mark

lordpantsington

Subscribed, I love it when you guys talk measurements/technical details!

rbahr

Great information

Subscribe!

Ray

mathisengineering

The parts were never sent for measurements.

Rickard 993 Turbo

I race my car, so hard to send parts to USA and miss hole season

I have also cobfirmed with other rsr owners that they are the same in attachment points, and the diffrence lays in stud spacing for brake caliper and some other small stuff

GT2rainge

Not sure about the front RSR uprights but on the rears if you look where the lower control arms mounts to it the RSR one is much lower than the cup upright, i presume for better geometry and roll centre with the lower ride height the RSR runs.
Also the mount face for the brake caliper is much further out to run a larger brake disc.
The picture below shows an RSR and cup one together.
Hope this helps.

rbahr

As an FYI:

2005 RSR rear upright: 996.331.111.9E/112.9E
2005 Cup rear upright: 996.331.111.06/112.06
2005 GT3 rear upright: 996.331.111.06/112.06
2005 GT3 RS rear upright: 996.331.111.90/112.90

For 2005 the GT3 upright was used on the cup car. The RS part became the RSR. They are all different...

Ray

mobonic

I have a front & rear 996 RSR upright if anyone is interested

GT2rainge

The picture and information I posted above is for 997 cup and 997 RSR uprights, forgot to add that sorry.

rbahr

I am in the process of doing the 996 RSR uprights, rear side members, and front cross member along with the various mono-ball bits - lower control arms, rear links, etc...

I hope to write it up some time...

Ray

Rickard 993 Turbo

Like to buy bare rsr upright front and rear