Thread: I just ordered a new johnson pump CM90P7-
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Old Nov 18, 2012 | 08:36 PM
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waldig
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Joined: Feb 2008
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From: VA
Talking I just ordered a new johnson pump CM90P7-
I have been doing lots of research on the intercooler and the process of keeping it cool. I did a tear down of my car today to test the parallel IC and even tried measuring the flow without an IC in the piping. Photos to follow with write up in a couple of days.

What I found out that the cm30 pump does not have much pressure capacity *1.

To effectively move the heat out of a parallel IC, the smaller cm30 pump is a limiting factor,and so I purchased a CM90P7- with greater flow and pressure capacity. *2. This pump is similar in design 12 volts and uses 3/4 " fittings and should provide me better information in the car. Before it starts, the pump is capable of less than 10 PSIG of water pressure and I have tested the core at over 100PSIG, THE PUMP IS NOT CAUSING IC FAILURES, ITS THE THERMAL FLEXING OF THE TUBES DURING HEAT AND COOL CYCLING.

When I get the pump running Ill show the results and see if it is worth consideration for the serious car dudes. The best price with free shipping is $250 so its not too expensive as an upgrade. I will be changing the hoses to make use of the larger tube fittings, the fittings on the IC will also be enlarged to 3/4"

*1. http://www.spx.com/en/assets/pdf/IB-301_CM10-30.pdf -------page 18 charts

*2. http://www.pumpvendor.com/media/john...7-1_series.pdf

THe super cooler will be used fully with this pump, and the IC parallel path core will be flowing like crazy, the goal here. Move out the heat and make advantage of the better IC design.

Wdy Enjoy
 
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