Complete 964 Suspension in a '68 912?

[carwash]

I've searched everywhere and cannot find anyone that has done this.

I have the opportunity to pick up a wasted 964 that i can pluck every suspension part, brake rotor, caliper, trailing arms, struts, etc... In fact I have the entire car, in case I need anything else.

I was going to do the Rebel RSR full 935 suspension in the car, but if I can save $7k and convert it to stock 964 for now and upgrade to better 964 parts later, why not right? I get the 964 brakes, rotors, hubs, everything in one shot.

I have all the fabrication ability needed, if so. I feel sure that I would have to pull the torsion tube out of my car and install the tube from the 964. What else is needed? My 912 chassis is about as bare as it could be and ready for this kind of swap, no better time than now.

Why can't I find any instances of people doing this? It is that difficult that it makes no sense? Someone talk me out of this or into this, please.

Thanks in advance for any help.

[Fly911]

The 64 to 89 911's (and 912's) have a completely different suspension to the 964. You would have to cut out the entire 964 floor pan from the front bumper to the rear suspension cross member, and weld it in to your 912. it's probably possible, but a BIG job...

[winders]

Originally Posted by carwash

I was going to do the Rebel RSR full 935 suspension in the car, but if I can save $7k and convert it to stock 964 for now and upgrade to better 964 parts later, why not right? I get the 964 brakes, rotors, hubs, everything in one shot.

What Fly911 said. I am not even sure the pan would fit.

What makes you think the 964 suspension is better than 935 style A-arms in the front with coilovers and coilovers at the rear? I can tell you that the 964 suspension is not better than the 935 stuff.

[carwash]

Why would the floor pan be needed ?

[carwash]

Oh and free is better than $7k. Lol.

[winders]

Originally Posted by carwash

Why would the floor pan be needed ?

The floor pan of a 911 and 964 are completely different. As are the suspension mounting points. So, if you want to mount the 964 suspension on the 912, you need make major modifications to the floor pan or replace it with the 964 floor pan, if that is even possible.

[winders]

Originally Posted by carwash

Oh and free is better than $7k. Lol.

Go for it. Then, when you are done, tell us how much that "free" stuff ended up costing you.

[KTL]

Agreed the 964 chassis tub has very different crossmembers and attachment points for its suspension. The 964 uses a modified front control arm assembly that is more of a D-shape than the typical A-arm on the older cars.

The rear suspension is also very different because of the modified location and shape of the 964 semi-trailing arm and spring plate, along with the 964's use of coilovers in the rear.

Get yourself a copy of the Porsche PET parts diagram from Porsche.com under classic parts.

http://www.porsche.com/all/media/pdf/originalparts/usa/964_USA_KATALOG.pdf

You'll see the 964 chassis is a much fancier evolution of the old 912 chassis and it'd be a real challenge to adapt that to your 912. Agreed the 935 style suspension is the simpler solution

This is a sucky picture but the best I could find to demonstrate the different layout

[3literpwr]

While the geometry from the 964 is better, I hardly see what the real advantage to this is? Given that you could simply grab the calipers and adapt as needed, the amount of chassis work for run 964 control arms would seem to outweigh the benefits. The front of the 964 is designed as such for the AWD system in the C4 and really has no benefit besides more bushing compliance. The same goes for the rear as the geometry is not much different and didn't really get "modern" until the multi-link in the 993.

[carwash]

I'm at car now....and I understand. No way it would work.

[jarrodblake]

It would work but you would really have to be committed. I am planing a similar project, However I am going with 996 front suspension. First off I have to ask why not build the 964 instead of the 912? That said it would be much easier to cut off the front clip of the 964 and weld it on to the 912 then trying to adapt the 964 suspension on to the 912. Things that you would need to change you would need the suspension pan out of the 964, the associated bracing to fit the 964 suspension, you would need to graft the sheet metal from the steering rack to the steering column in to the 912 where the smuglears box/ footwell is located. You would probably have to run a custom fuel cell as the suspension pan will be in the way of the stock fuel tank but you maybe able to run the 964 fuel tank. Then you would need the strut towers and associated bracing. The rear suspension will be much easier here is a build thread where they grafted the 964 rear suspension on to the car. http://forums.pelicanparts.com/porsche-911-technical-forum/260064-3-9-rsr-project-my-carrera-reborn-8.html

[Tidybuoy]

I don't know about the 964 rear but the front is McPhearson Strut setup and so the front trunk/sheet metal is completely different from an older 911/912.

[winders]

Originally Posted by Tidybuoy

I don't know about the 964 rear but the front is McPhearson Strut setup and so the front trunk/sheet metal is completely different from an older 911/912.

Both the 964 and 912...and 993 for that matter, use a McPhearson strut setup out front.

[carwash]

The 964 Shell is way too far gone to build. It has been hit very badly in the side. But the car still has a lot of great parts on it. Looks like I have a bunch of 964 suspension parts for sale. LOL.

[jarrodblake]

Originally Posted by carwash

The 964 Shell is way too far gone to build. It has been hit very badly in the side. But the car still has a lot of great parts on it. Looks like I have a bunch of 964 suspension parts for sale. LOL.

is it a white 964 on cincinnati.craigslist?

[carwash]

Yes, it's now at my shop.

[jarrodblake]

let me know if you cut the tub up, I may be interested in a few sections.

[carwash]

we will be cutting up the tub. roof skin from cowl to the engine opening seems to be in almost perfect condition. the hit was oddly low on the passenger side, i'm not sure how it didn't affect the a-pillar etc.... Driver rear quarter appears to be perfect. Engine bay and rear quarter tie-piece are intact, etc. What are you looking for?

[jarrodblake]

If you dont plan on doing the conversion, I may be interested in the bare front clip no suspension parts just sheet metal. I'm still trying to decide on how I want to adapt the 996 front suspension on my 83sc.

[carwash]

I sold a bunch of 996 front suspension parts a while ago, i can't imagine trying to make that mess work. The front bucket looks like it might be tweaked a little bit in the very front, but maybe not, i can get better pics for you at some point.