E30 Zone

Having just dropped my m20b25 motor back in the engine bay the heater isn't working
The pipe that comes from the back of the cylinder head does it go on the top or the bottom of the heater inlet pipes?
Cheers
Ian

The Wiki guide may be of some help:
https://www.e30zone.net/e30wiki/index.p ... oubleshoot

The pipe from the head goes to the bottom heater pipe.

Fnar fnar.

Ben

Thanks all
Just running it in
Had a steady run up to Blackpool with the family
Being gentle with it those pistons were a fff ff fortune
I will check out those heater pipe as soon as I can

So I swapped the heater pipes around so the one from the head goes on the bottom of the heater inlet and made sure there was coolant in the top hose just before fitting it
Heater works now
I believe it matters which way round the pipes are fitted
I just need to get some miles on the fresh engine now
Cheers
Ian