starting engines

[stollz]

Hi everyone,

New here, but have been reading for a long time.

Very enthusiast people here, with a lot of knowledge.

I've been a mercedes and BMW fan for a long time and gattered a lot parts threw the years.

In my basement under my garage i got several engines laying around.

all mercedes V8. 450, 420, 500, 6.9.

10 years ago i bought a complete 6.9 engine plus gearbox and wanted to put it in one of my SEC's.

It was a 80K mile engine from a totaled car.

It never happened, and the car is gone.

Last year, I really wanted to start the engine and made me a HEI ignition for it.

Didnt connect the fuel system, just poured some gas and paint thinner in the manifold and got it running for a couple of seconds.

Then I tried it in my 560 sec. Disconnected the EZL, and made a connection from the Hei tachsignal to the benz-tachwire. The car was running, but the HEI tachsignal is a very spiky and noisy one, and needs to be converted to a perfect square wave.
My MS1 lost it's mind and was resetting. The rev counter was all over the place. The car was not drivable at all.

Just out of curiosity, i'm going to make a square-wave converter. I want to know if it will run OK on a HEI ignition.