4 replies to this topic

[whistler]

A friend of mine has totally restored a 1990 mini except for the engine. It's from a 1275 Metro that has sat in the corner of his workshop for about 2 years.

He refitted it recently but it has started to overheat, with the temp. gauge going off the scale after a short drive. No loss of water, but overflow pipe is weeing on the floor. Run it without the rad cap and no loss of water. No bubbles.

Changed thermostat and sender; run it without thermostat, no difference. Removed rad and test, full flow. Removed water pump and that's in good order. No water in oil, no water or vapour out of exhaust. Only thing different is he has fitted one of those billeted thermostat housings with the flying engine steady bar to the bulkhead. Supplied by 3D Scan (used to be DSN). Can't see any reason why that item would make any difference.

The heater hose is fitted from head to bottom hose.

 

Any thoughts before he takes the head off?

[MiniMadRacer]

Has things like the timing, and the carb settings been checked, and have you "flushed" the block out at all. was it stored with or wthout coolant?

[whistler]

No settings been changed and block has been flushed through. Brown water then went clear. Just usual colours.

[Piero]

Radiator cap?

[Quinlan minor]

 

it has started to overheat, with the temp. gauge going off the scale after a short drive.

is there any other evidence that it is overheating?

Could the problem be limited to the sender, wiring, power supply or gauge?

Is a Metro sender matched to a Mini gauge?

Edited by Quinlan minor, Today, 12:59 PM.