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Reply to "Electric water pump"

Just some more food for thought.

I am building an LS7 powered Pantera, hardcore street, building it so it can withstand heavy track duty.

In order to move the engine as far forward as I can in my build, I initially opted to run dual 55 GPM remote Meziere pumps. I know a bunch of folks have had success with a single 55gpm Meziere on these style cars (GT-40s, GTMs) even on hot track days. My thoughts were if 1 was good, 2 pumps in parallel was even better.

Well I ended up calling Meziere and talking with their technical support. Even with the twin pumps this was not recommended by the Meziere folks, they said (paraphrasing here) that in their opinion a dual parallel 55 GPM pump set up would be experimental for a 30 minute track day period with a 700hp flywheel car.

Instead they suggested using a WP430 remote operated belt driven pump (originated from a sprint car pump, apparently its pretty well used in the land speed/bonneville realm). This pump puts out just over 100gpm at max rpm, but the real difference is the head pressure it develops. That's what Meziere tech folks really educated me about.

I've attached a flow/pressure pump of the WP430 and below is a link to where some rodders on another board did a test on all of these Remote water pumps to determine the real flow rate/pressure developed (Post 1 thumbnail, just enlarge to view)
http://www.lingenfelter.com/LP...flow-testing-results

After looking at all the data I wanted to stay with a mechanical pump, so I ended up going with the WP430, and a remote 55 GPM Meziere on a bypass line to help with idle/low rpm cruising.

My application does not direct apply to you, but I am a proponent of making sure you're fully educated prior to committing to a mod. So take this with a grain of salt if you like.

FYI: You can fit two 55GPM Remote Meziere pumps side by side, under the front trunk, between and under the front sway bar and steering rack, you will need to make new coolant pipes though.

Thanks,
Dave

Attachments

Images (1)
  • Meziere_WP430_Flow_vs_Pressure_Chart
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