I guess you could make it work with a Subaru unit....
It would seem that with a cover plate and a shaft that matched the size and splines of the input of the tranny you could do this with about any longitudinal mount FWD unit mounted in the rear. Of course some would be better than others.
Better being defined as cheaper, more available or easier to adapt. Por$che is always spelled with a $ and the 924/944 units are so old it makes we wonder about the availability, condition and price. Plus IIRC not many came with an LSD. Of course there is the "it's been designed to work this way" factor.
What size is the shaft itself on the Porsche unit? Still wondering if an aluminum driveshaft might not be stiffer and work just as well but at a cheaper price point. I'm worried the bearings might be an issue there tho.
The issue with the Subie unit is that the FWD portion isn't available with an LSD in the states, which is why I mentioned the VW/Audi longitudinal units in the first post. I don't know how many have the LSD and how easy they are to find, but at least they sent some to the states with an LSD.
I have been playing with building a Locost. My only issue is that I didn't want to build the typical front engined RWD mostly due to space concerns. All the ones I've spent any quality time with leave you with a cramped cockpit due to the transmission tunnel. And the tranny brings a heat source into the cockpit with you. I got burns from just tracking an Ultralite on a 100 degree day.
I had decided to build a middie and wanted to do a Subie because of the flat 4 until I found out about the LSD issue. A VW build didn't interest me due to all the issues with VW engines and their weight. It could also be the fact that in the past 2 years I've watched 4 VWs spontaneously combust on the roads - 2 Beetles, 1 Jetta and 1 Passat. I couldn't find a way to adapt a rotary, another very compact motor, to a FWD tranny.
I don't want a V8 so there goes the LS1 bolted to the vette transaxle and besides I'd really like to keep the car weight down to near the 1,000 lb mark. And since I'm not the best driver in the world if I get an engine with too much torque I embarrass myself when I get excited and accidentally give it too much throttle in the midst of a corner.
Now it just so happens that I have a spare S2000 motor laying around. I have a 2.0 in my S and I have a new 2.2 sitting in the garage. I could put the 2.2 in my S and use the 2.0 in a Locost or leave the S alone and use the 2.2. The S has some very special concerns in that if you get the wrong transmission ratios you could be going in and out of VTEC when you shift. Right now once you are in VTEC you stay in VTEC with the stock tranny.
I'm not brand or a specific motor loyal, I just want a great power to weight and good CG (hence being enamored with the Subie engine and the rotary). The S is a fabulous engine, but it's tall when compared to the Subie or Rotary.
This seems like it could be a good compromise, provided I can find a tranny. Does anyone know which VW/Audi longitudinal mount trannies would hold 250ish hp, comes with an LSD and can be had for a reasonable price? I haven't researched it yet cause we were really just BSing when this came up, but nothing anyone has said so far makes it sound like a horrid idea.