"Pinking" and other problems

[marlon]

Hi guys

we need help.

Got the e36 M42 engine into the e30 and it's running.

The problem is that under load the engine is knocking/pinking etc and sounds like a diesel at tickover.

Now the e36 version uses different cams from the e30 version, so I'm wondering if it's the different cams causing the problem seeing as the e30 ECU will not be timed properly for the newer cams therefore causing the problem. Any ideas ???

Also, we can't bleed the cooling system properly, basically can't get the coolant to go through to the heater matrix. The engine seems to be running very hot, although we can't tell because we don't have a working guage now. That could cause the pre-ignition I know. Where is the thermostat on the M42 lump ?? Maybe it's stuck closed ??

Any help appreciated.
Thanks

[bazza93]

running hot could also cause the pinking, so maybe you are on the right lines of the thermostat being closed.
sorry can't help on the whereabouts of it though

[anisotropy]

thermostat is at the front. http://www.realoem.com/bmw/showparts.do ... g=11&fg=35
you'll need a gasket though.