Tubular rear subframes.

[1972fritz]

I Work at a race car fab shop mostly making modified and late model chassis and suspension parts. I was looking into making a rear subframe that would work with the BMW "small case" differentials from an e30. I wanted to see if there was any intrests in these so I could make a sell them to some good fellas like all of you. I am also thinking of some other parts to make up but figured I would start with this.

[bourkeco]

That would be very cool but as always price point is a issue... and what other mods would be needed... the only reason I say this is because our diff's are not a huge week point in our lovely 02's.. but the option would be cool as the L/S diffs are becomming harder to find...

[1972fritz]

The small case is stronger yes and I know how hard it is to find a ls diff. The main thing is that it will be lighter and should be a bolt in. I'm throwing around ideas for adjustable front and rear control arms but not sure if any one would be interested in those. We just have a lot of good designs on our race parts and I figured with little modification to the designs they would be the exact same thing. I'm actuall looking to build one using a ford rear diff. For my big turbo project.

[Colin]

It sounds like a good idea.

[1972fritz]

Right now I just need to see if there is enough intrest in reproducing them or just making my own. I will be spending a few hours making a jig to keep them and making the correct parts to keep them bolt in.

[PSloan]

Do the small case diffs bolt to the DS? How about the half shafts? It seems like a medium case conversion would be better - those are far easier to find.

[1972fritz]

Crap my bad yes the medium case is the one I'm looking to do the swap with. Sorry for all the confusion. I am working with a machinist friend of mine on either custom axle shafts or adapters to make the axles and drive shaft work correctly if need be.

[PSloan]

You'll probably get a better response once you have a finished product. I'd pay up to get a 4.11 medium case LSD.

[bourkeco]

If it's a $1000.00 no Im not intrested How much are we geussing at?? Intrest is $$$>>>

[1972fritz]

Yea will be about half that not including diff. And depending what options you want I.e. Bushings and powder coat and or paint. The only other variable is steel price. As of this exact moment we are swamped at work having to get customer chassis and needed parts done during the off season. I am fitting this in on weekends trying to get extra shop time.

[bourkeco]

Let us know... ??

Yea will be about half that not including diff. And depending what options you want I.e. Bushings and powder coat and or paint. The only other variable is steel price. As of this exact moment we are swamped at work having to get customer chassis and needed parts done during the off season. I am fitting this in on weekends trying to get extra shop time.

[1972fritz]

Will do guys I have been looking for someone to do this and with no results I just said I'm gonna make what I want. And being how I work on tube chassis all day I couldn't think of a better reason to start.

[fiftytakedowns]

THiiiiis is gonna be tight!

[Essem.w]

very interested in something like this.

[nbristow01]

I would be interested. If it mounts up like stock, has adapters and I can use a later model diff