| Message: | | I've found myself involved in overhauling and modifying a 1938 BMW 328 engine and having no previous experience with these, am looking for information and especially parts sources.
This engine is not mine, but belongs to a customer of the guy I share some shop space with. The engine owner wants to do a few performance tweaks - heated-up cam, higher compression pistons and replacing the Solexes with Webers.
On disassembly, the head seemed to be in fairly good shape and will maybe only need guides and a couple valves. Some push rods were bent and some of the con rods were apparently bent, straightened and then reinforced with brazing (!!!!!). I found a locally available set of stock rods. The crank is a question mark. The service manual says the std. main bearing journal dia. is 50mm, but this one has 55mm journals (plated steel shell-type bearings). A fellow that advertises parts in Czech Rep. thinks that the crank may be out of a 501 model as a performance beef-up mod done in the past.
This fellow in Czech Rep. ( http://www.bmw328.net/ ) has some parts, but wild expensive (6 bare units w/ no rings - wrist pins 8.5:1 pistons - 1800 Euro !) Does anybody on this list have parts sources to pass along?
Also, this engine has a strange coolant - oil heat exchanger that is unknown to the Czech guy and I don't see on any of the 328 engine pictures I've been able to fine on the web. Anybody know anything about that mod? Looks like some sort of cold temp oil temp accelerator.
GD
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