4R100 Cooler Pressure

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Nov 11, 2024 | 05:10 PM

robert kelsey

Thread Starter

Mountain Pass

Joined: Aug 2003

Posts: 101

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From: california

4R100 Cooler Pressure

What’s the normal operating PRESSURE in the COOLER ?

Nov 11, 2024 | 05:54 PM

John in OkieLand

Lead Driver

Joined: Aug 2022

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From: Oologah, OK

Looking at this chart, you better have lines and fittings that can handle 250 psi or more... and that is just operating pressures.

Nov 11, 2024 | 07:04 PM

robert kelsey

Thread Starter

Mountain Pass

Joined: Aug 2003

Posts: 101

Likes: 1

From: california

Quote:

Originally Posted by John in OkieLand

Looking at this chart, you better have lines and fittings that can handle 250 psi or more... and that is just operating pressures.

I’m pretty sure line pressure is not the cooler pressure .. The bypass should open at 70

Nov 12, 2024 | 10:58 AM

Mark Kovalsky

Frmr Ford Trans Engr

Joined: Aug 1999

Posts: 24,725

Likes: 2,651

From: SE Florida

Quote:

Originally Posted by John in OkieLand

Looking at this chart, you better have lines and fittings that can handle 250 psi or more... and that is just operating pressures.

And what does that have to do with cooler pressure? Line pressure does NOT run through the coolers.

Cooler pressure is around 30-60 PSI.

Nov 12, 2024 | 10:03 PM

John in OkieLand

Lead Driver

Joined: Aug 2022

Posts: 5,066

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From: Oologah, OK

Quote:

Originally Posted by Mark Kovalsky

And what does that have to do with cooler pressure? Line pressure does NOT run through the coolers.

Cooler pressure is around 30-60 PSI.

it has to do with misconstruing what he was asking about...
I was thinking that the pump pressures were on the lines to the cooler, and they aren't as it dumps back into the pan free flow.

Nov 13, 2024 | 10:31 AM

robert kelsey

Thread Starter

Mountain Pass

Joined: Aug 2003

Posts: 101

Likes: 1

From: california

The reason I was asking about this is .. Because I see posts using all sorts of High Pressure JIC, inverted flare, etc. Fittings & Hoses for Transmission Cooler installations where pressure shouldn’t exceed 75-80psi…🤷‍♂️

Thanks Mark 👍