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Hello all,

What are the options for a mechanical distributor (not EFI) on a performance 6 cylinder M20?

The reason I ask - I am building a 2.8l stroker M20 with triple 44 IDFs. I could run the 1.3 motronic from the E30 purely for the ignition however it is a lot effort to convert and then tuning ignition timing requires much more effort than turning a dizzy. Which of the many M20 distributors are best for performance and higher revs? are there any aftermarket distributors available? I have found this list of factory dizzys:

E21 323i ("77-82) distributor no# 0237 302 006
with quoted timing at 22 degs advance at 1500 rpm

E21 323i late- 0237 302 032
19degs at 3000 rpm

323i 1982-1983 dist no 0237 302 038
19degs at 3000 rpm

323i 1983-1984 dist no 0237 302 040
16 degs at 5000 rpm

323i 1985-1986 dist no 0237 304 025
16 degs at 5000 rpm

320i/6 1982-1983 dist no 0237 302 037
26 degs at 3000rpm

320i/6 dist no 0237 302 039
23 degs at 5000 rpm

320i/6 dist no 0237 304 024
23 degs at 5000 rpm

Thanks in advance.

Is the location of the dizzy not interfering with the carburettor setup ?

You could go for a megasquirt wasted spark or cop ignition setup only. Megasquirt is easy to tune.

BertjeConti wrote:Is the location of the dizzy not interfering with the carburettor setup ?

You could go for a megasquirt wasted spark or cop ignition setup only. Megasquirt is easy to tune.

No the distributor is easily accessible see this link for pics of the setup on other cars

http://www.e28.se/forum/viewtopic.php?id=10849