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Old 12-18-2005, 12:39 PM   #1 (permalink)
lwg
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Ram Assist size required GPM and PSI

Looking for some general guidelines for GPM and PSI required for either a 1.5 x 8 ram or a 1.75 x 8 ram. I will be turning 37" tires on a 5500lb vehicle. I will likely be running an uprated Saginaw TC type pump. Thinking about getting the PSC version that is rated for 1600 psi and about 4.5 GPM. This will be used in conjunction with a Land Rover PS box.

Not sure if I will go with the 1.5 or 1.75 ram at this point.

Oh and BTW, I searched and searched. Couldn't find exactly what I was looking for. I want to make sure I don't under/over power the ram so it works as designed.
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Old 12-18-2005, 02:20 PM   #2 (permalink)
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Hi Larry,

I am just finishing up my ram assist on the D-90. I am having it all done for me as I knew the second I tried to drill the box that I was over my head. I am using the stock 300TDi pump but I had to have it rebuilt to be at the right PSI. When I get it finished I will send you pictures and all the information you need. I do know this though, the 1.5 ram 8in stroke is the correct for your application. I am using PSC as well.
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Old 12-18-2005, 04:11 PM   #3 (permalink)
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lwg,

Call them up, talk to Tom or Karl and see what they recommend for your rig. They'll never steer you wrong.

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Old 12-18-2005, 05:17 PM   #4 (permalink)
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I'll give them a call tomorrow. Is there any sort of rule of thumb for flow and pressure with rams? Also, at what point would someone want to go with a 1.75 verse the 1.5 bore?

I've read the various negative behind too big a ram, particularly that response will be too slow. Obviously I don't want that but would like to be able to turn the 37's when aired down, ARB'd and on the rocks with one hand!
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