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Old 12-24-2012, 02:06 AM   #1 (permalink)
Acme Ace
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Transmission Pressure

What pressure does the allison transmission operate at?
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Old 12-24-2012, 10:08 AM   #2 (permalink)
Mike L.
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What pressure does the allison transmission operate at?
Stock mainline pressure is around 230 psi.
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Old 12-25-2012, 03:52 PM   #3 (permalink)
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what pressure is being pumped through the cooler lines? Will a compression fitting hold?
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Old 12-25-2012, 04:13 PM   #4 (permalink)
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I usualy see 80 psi in the lines and have seen spikes as high as 200 psi. I would not use clamps on these lines.
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Old 12-26-2012, 03:25 PM   #5 (permalink)
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what pressure is being pumped through the cooler lines? Will a compression fitting hold?
I've performed many extreme cold starts with compression fittings attaching to the stock steel lines with no issues, but they're the industrial wedge collar type fittings and not something you'd buy for household plumbing. You need to figure a minimum 300 psi rating on the cooler lines and hardware.
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Old 12-26-2012, 03:51 PM   #6 (permalink)
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I've performed many extreme cold starts with compression fittings attaching to the stock steel lines with no issues, but they're the industrial wedge collar type fittings and not something you'd buy for household plumbing. You need to figure a minimum 300 psi rating on the cooler lines and hardware.
I used An hose rated for 300 PSI on mine, and one hose is starting to leak mid way down it, so i would figure a hose with at least a 300-350PSI working pressure range to it to be able to handle the pressure spikes. I'm getting ready to redo mine in true AN stainless braided hose good for around 500PSI as I don't want to have to redo them yet again in another 2 years.
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Old 12-26-2012, 03:53 PM   #7 (permalink)
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Thanks, I have the answers to move forward. Going to slap factory lines in and do the silver solder mod with high pressure hoses and fittings for back up and any furture needs.
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