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P.B.A.
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Discussion Starter · #1 ·
I've got dual radiator caps. Radiator ended up slightly lower than the motor. The highest point is the upper radiator hose.

I've searched and can't find my answer. Do I need to tie both caps to the same overflow? Each have their own? The one on the radiator is a 2lbs higher rating. But tends to be the one which opens. Right now I just top the fluid off when I use it.

What you say?
 

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I've got dual radiator caps. Radiator ended up slightly lower than the motor. The highest point is the upper radiator hose.

I've searched and can't find my answer. Do I need to tie both caps to the same overflow? Each have their own? The one on the radiator is a 2lbs higher rating. But tends to be the one which opens. Right now I just top the fluid off when I use it.

What you say?
I had the same issue as you with my V8 swap into my ranger. I used this piece on the hose where it exits the T stat housing and turns passenger:
https://www.amazon.com/gp/product/B004C0749E/ref=oh_aui_detailpage_o03_s01?ie=UTF8&psc=1

Then the hose goes to radiator. I plugged the over flow outlet on the in-line radiator cap housing with an npt plug, and I am just using the overflow on the radiator. The radiator cap is the one that is pressurizing my cooling system and it is working great.
 

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P.B.A.
Joined
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4,891 Posts
Discussion Starter · #5 ·
I had the same issue as you with my V8 swap into my ranger. I used this piece on the hose where it exits the T stat housing and turns passenger:
https://www.amazon.com/gp/product/B004C0749E/ref=oh_aui_detailpage_o03_s01?ie=UTF8&psc=1

Then the hose goes to radiator. I plugged the over flow outlet on the in-line radiator cap housing with an npt plug, and I am just using the overflow on the radiator. The radiator cap is the one that is pressurizing my cooling system and it is working great.
That is exactly how mine is plumbed. I will do just as you have done. Doesn't seem to puke fluid from that cap anyways. Even though it's two pounds lighter.
 
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