Coolant pressure
Cargo Master
Joined: Oct 2018
Posts: 2,811
Likes: 1,911
From: unfortunately Germany
I have 3D print files for installing the pressure gauge in the footwell (I can send you the file if you’d like).
I’d also like to point out the following: we’re seeing coolant pressures of up to 18 psi (depending on the bottle cap) and coolant temperatures of up to 105°C / 221°F in the system.
If there’s damage to the head gaskets or cylinder heads, it might be even higher. I’m not sure how well a simple rubber hose with a clamp would hold up here.
That’s why I use thin measuring hoses from the hydraulic industry (pressure-resistant up to well over 4000 psi, stable, and easy to route).
I don’t even want to imagine what would happen if the pressure gauges were mounted near the steering wheel and the hose slipped off the gauge, causing hot steam and hot coolant to escape.
That’s why I have the pressure gauge installed in the footwell.
You can get a good 0-20psi stainless steel gauge in a hydraulic shop/store.
I’d also like to point out the following: we’re seeing coolant pressures of up to 18 psi (depending on the bottle cap) and coolant temperatures of up to 105°C / 221°F in the system.
If there’s damage to the head gaskets or cylinder heads, it might be even higher. I’m not sure how well a simple rubber hose with a clamp would hold up here.
That’s why I use thin measuring hoses from the hydraulic industry (pressure-resistant up to well over 4000 psi, stable, and easy to route).
I don’t even want to imagine what would happen if the pressure gauges were mounted near the steering wheel and the hose slipped off the gauge, causing hot steam and hot coolant to escape.
That’s why I have the pressure gauge installed in the footwell.
You can get a good 0-20psi stainless steel gauge in a hydraulic shop/store.
Last edited by Hartwig; Apr 11, 2026 at 02:53 PM.
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Cargo Master
Joined: Nov 2015
Posts: 3,431
Likes: 948
From: Fort Worth, TX
Thank you, Hartwig, but I was talking about the hose as a temporary way of monitoring while driving.
I would like to know more about these hydraulic hoses, for use with other mechanical pressure gauges.
I would like to know more about these hydraulic hoses, for use with other mechanical pressure gauges.
Cargo Master
Joined: Oct 2018
Posts: 2,811
Likes: 1,911
From: unfortunately Germany
These hoses are designed for pressure measurement in hydraulic systems.
https://www.kramp.com/shop-de/de/p/m...t-2x--MPSW2000
https://www.kramp.com/shop-de/de/p/m...t-2x--MPSW2000
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