Re: Engine Temperature Gauge Reading

Posted by Tim Cole On 2015/9/4 16:14:09

The thermostat will be fully open 20 degrees warmer than the rating. 210 degrees at the thermostat housing is pretty far up there. I would check the temperatures along the block.

My modern car runs 178 at 60 mph in the summer with the A/C off. The manual says it's a 170, so the thermostat is not fully open in that car.

Unless these old motors were very carefully maintained, I think they are going to run hot. I knew someone with a low mileage 343 roadster (1927). The car never ran hot. I knew another guy with an 840 touring car (1931) that was restored from junk. His engine would boil over before that 343 would even break a sweat on a steep hill.