Cooling System

bsull

Club Member
I'm about to flush the cooling system and put in new coolant. Two questions;
1) The thermostat has a small popet on the top flat disc - is there a special way the thermostat needs to oriented? What does the popet actually do?
2) The engine block coolant drain plug - not sure which plug this is - I've attached pic with two possibles...
Thanks
Brett
 

Attachments

  • Drain PLug.jpg
    Drain PLug.jpg
    125.4 KB · Views: 25

jonbills

Membership Secretary
Staff member
Site Administrator
The thermostat needs to be oriented so it doesn't foul when open on the lower housing - should be obvious when you look at 'em. If the popet is what I think it is, then it is to allow some flow when the stat is closed - stops airlocks or sommat.
The block drain is on the other side of the block, below #5 ports or so.
 

Northerner

Club Member
at the top of the thermostat housing is a notch mark to align it with. Just done mine as the pipe on top was leaking and corrosion had set in the housing so had to get it ally welded.
 
Top