What temperature should the thermostat be in a 1986 m20b25 manual car?
Thanks
Thermostat question
Moderator: martauto
- Brianmoooore
- E30 Zone Team Member

- Posts: 49358
- Joined: Mon Jan 10, 2005 11:00 pm
80 degrees on a M20. Any higher, and it risks local boiling at the back of the cylinder head, especially at the relatively low pressure of 1.2 bar that the pre face lift operates at.

