CLASSICMAN said:
If I can add my 5c worth........
I'd be interested to know where you got the information about the "120 lightweight 535's" being built. I have done quite a bit of research on e12 BMW's when I bought mine, and when I was tracing a 530mle. All the information I have come across in that time is that the ONLY lightweight 5's ever built were built in SA and were 530's built in 1976.
Two original racecars were built by a BMW AG / Schnitzer / BMW SA collaboration to race in the then "Star Newspaper" series at Kyalami. In order to homolgate them, 100 road cars had to be built and sold, which BMW SA did. They sold so well, that another 100 or so were built and I think the grand total of 204 road going 530mle's were built. All of this in 1976. The jury is also out on how the cars were actually lightened. It is common knowledge that holes were drilled all over the car and the term "swiss cheese" has been used many times to describe the cars. It has never been verified though that the cars were actually pressed out of thinner gauge steel and there were no ally panels used.
Having said that, it is more likely that this may be Tony Viana's ex race car and that they lightened it in the same fashion - removing plates and drilling holes. It is highly unlikely that it is a lightweight version in the true sense. I may be wrong, but anyway - you are still building an awesome car!!
If it IS Tony Viana's ex race car it will have been homolgated by the FIA and you have a very rare and expensive car in your possession.
This is really valuable info.
All of the E12 535i's (1982 upwards i think), came standard with aircon, electric windows, central locking and power steering. Tony was racing the 535i in Group N at that time and BMW had to make plans to make the cars lighter as competition was fierce between the Alfa's and the BMW's. I think the best option at that time was to build a model with less luxuries, hence making it lighter! To homolgate the so called light weight 535i, BMW had to biuld a hundred units but I think they eventually ended up biulding a hundred and twenty units.
You are correct, I do not think that it is a light weight in the true sense, but it is different from the other E12 535i models. There is no power steering, no central locking, no electric windows and no aircon. I suppose they saved a couple of kg's by removing it.
What is also different is the dash. It is lower and rounder than the original, quite high and square dash of the other 535i models.
The engine is the 93,5mm bore and came standard with Mahley flat top pistons, unlike the 92mm bore of the common Motronics motor used in other 535i's.
Thanks and Regards
E12 535i Turbo