Rebuilt engine over heating

[30 Closed Cab PU]

Perhaps do the re-torque and see what happens. My motor rebuilder told me to re-torque at 50 miles, 100 miles, 200 miles , and 500 miles, if torque has stabilized at 500 miles re-torque once a year. I plan re-torque every fall to prevent possibility of coolant leak during storage.


Then do a compression test to confirm the head/gasket are OK. If you still overheat - NAPA has a $50 Block Test Kit that measures for exhaust gas in your coolant. Very simple to do, and has enough test fluid to do many tests. Or perhaps take it to a local mechanic or radiator shop and have it done.


Unknowingly I had a 2 row core radiator that caused overheating - not enough capacity. Have been told the only good 2 row is a Brassworks. 3 or 4 row is recommended.


Last bit of info - My motor rebuilder told me in the hundreds of motors rebuilt he has had 2 that he had to redo They were too tight and caused over heating. - I hope this is not what you have.

[katy]

Another is a failure to measure piston ring gap,which results in a tight piston in the bore.That needs to be fixed.

How true, I've seen that a few times, a good way to screw up an otherwise good rebuild.

[30 Closed Cab PU]

Originally Posted by RJ

I have a 1930 AA, engine was rebuilt and it has a new radiator,engine boils over after running for 10 minutes. I had a original radiator on it that was cleaned out at a local shop and it was over heating . I decide to bite the bullet and buy the new radiator.
Much to my dismay it still over heating, engine has a high compresion head and premium head gasket.I dont see any water in oil, engine is tight but will start up with only a 6 volt battery.
Any help would be appreciated. Thanks

Premium Head Gasket?


If you are using the siliconed gasket, I have seen discussions from people having problems with them. From my memory, it was not determined if it is not a good gasket, or if there are special procedures to be followed at install that are not being strictly adhered to.


I think I saw one or 2 people insisted they followed the instructions that came with the gasket, and the gasket failed in a very short time. With them doing it at home, perhaps possible the head and block were not ground perfectly and this gasket is not tolerant? Do not know.


Either way they have a bad rap, and people seem to shy away from using them.

[CT Jack]

What do you mean by "new radiator"? Is it a brand new recored radiator or another used radiator? If its a used radiator it could be plugged.