Murdertalon
Proven Member
- 396
- 82
- Jul 7, 2016
-
East side,
Washington
Would like some input on this, how you feel about this AND where this post should be. My coolant cap was not holding pressure properly I played with seeing how well the hoses once the engine was hot were holding or not holding pressure.
Turns out my engine running hot may have had less to do with my radiator (what I thought was the issue) and more to do with not enough pressure being held by the coolant cap. The regular oem coolant cap part seems to be the weak point in the cooling system of the 4g63. It doesn't seem to apply much force or really seal up incredibly well.
Grab your upper coolant line cold and see if its holding pressure or just pushing fluid/air around. Next drive your car till at operating temp, grab upper coolant line and see if its holding a little pressure or a lot. If your hose feels like its free to move cold and just sorta kinda pressured while hot..
This is how I solved the issue. I cut one of these master cylinder gaskets to form a new rubber gasket for my coolant cap. This gasket is THICK you have to use some force to get the cap on properly, this solved all of my temp issues.
This is a picture of the parts used, I already made another one and its in my car. The engine temps went from 2/3 - 3/4 range down to below 1/2 on idle, full load one bar or notch below the image of the thermostat in the temp gauge.
This may help other DSM'ers I was wondering where this needs to be posted or if anyone wants to give feedback.
PS: I had already modded drivers side fan to always come on with ignition AND put a heat shield on my turbo to combat heat soak issues. It wasn't enough for me.
Turns out my engine running hot may have had less to do with my radiator (what I thought was the issue) and more to do with not enough pressure being held by the coolant cap. The regular oem coolant cap part seems to be the weak point in the cooling system of the 4g63. It doesn't seem to apply much force or really seal up incredibly well.
Grab your upper coolant line cold and see if its holding pressure or just pushing fluid/air around. Next drive your car till at operating temp, grab upper coolant line and see if its holding a little pressure or a lot. If your hose feels like its free to move cold and just sorta kinda pressured while hot..
This is how I solved the issue. I cut one of these master cylinder gaskets to form a new rubber gasket for my coolant cap. This gasket is THICK you have to use some force to get the cap on properly, this solved all of my temp issues.
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This is a picture of the parts used, I already made another one and its in my car. The engine temps went from 2/3 - 3/4 range down to below 1/2 on idle, full load one bar or notch below the image of the thermostat in the temp gauge.
This may help other DSM'ers I was wondering where this needs to be posted or if anyone wants to give feedback.
PS: I had already modded drivers side fan to always come on with ignition AND put a heat shield on my turbo to combat heat soak issues. It wasn't enough for me.
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