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Over heating

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Spaz5spd

10+ Year Contributor
197
0
Feb 8, 2012
Springfield, Massachusetts
Just got water pump, timing belt, tensioner, and pullies replaced. The car car did good for a little bit. Back to overheating. My first few pulls stayed cool. Then noticed the overheating. It's not common over heating. It makes it to 230° and coolant is bubbling and streaming in reservoir. Blown HG? At Linnet city speeds (35-50) it was fine, long highway pulls it overheats.
 
230* is not over heating if your system holds proper pressure.

Try a new radiator cap
 
The only way I got around with it was running it loose to release pressure through the cap. Then it stay at like 190°-204°.

Also removed thermostat to see if it would help, nothing. I'm running a single sided radiator dual core, my first motor had no issue staying cool with the setup so I know that it's not that.
 
The only way I got around with it was running it loose to release pressure through the cap. Then it stay at like 190°-204°.

Also removed thermostat to see if it would help, nothing. I'm running a single sided radiator dual core, my first motor had no issue staying cool with the setup so I know that it's not that.

When you loosen the rad cap, and release the pressure on the system, you lower the boiling point to 212*

For every pound of pressure applied to the cooling system you can add 3* to the boiling point,
 
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