Question: Transmission Pressure

[Acme Ace]

What pressure does the allison transmission operate at?

[Mike L.]

Originally Posted by Acme Ace

What pressure does the allison transmission operate at?

Stock mainline pressure is around 230 psi.

[Acme Ace]

what pressure is being pumped through the cooler lines? Will a compression fitting hold?

[Mike L.]

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.

[Crafty1]

Originally Posted by Acme Ace

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.

[THEFERMANATOR]

Originally Posted by Crafty1

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.

[Acme Ace]

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.