Department Of Boost
Alpha Geek
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- May 26, 2010
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Michigan pretty much sucks.... 4 good months a season here and it's over.
And 4-5 months more of fantastic snowmobiling!!!
Michigan pretty much sucks.... 4 good months a season here and it's over.
Back from the dead.... Any test results on the newer GT500 pump?
Nope, I have been slammed. Next week.
It has 3/4" fittings.I'm waiting for the results with anticipated breath. Dunno what size fittings are on the in + out. If it comes with 3/4" fittings..then what ?
I haven't run this exact test, but something like it. With the EWP150 (turbo pump) at 1.25" everywhere (a full system with IC, HE and hose) it moved 19gpm . I put a 1" ID 1" long restrictor at the IC (in and out) and flow dropped to 16.75gpm. If you run the turbo pump at 1" everywhere it flows 14gpm. So there is absolutely an improvement in running bigger lines and keeping the restrictions to a minimum. But, if you run the Turbo pump at 3/4" everywhere it flows 8.5gpm. So it takes a pretty good whack at 3/4".If you can morph it up to say 1.25" hose, you still have the 3/4" bottle neck, but flow, on paper should still improve.
I have one here. That's the plan.If you get ur hands on one, perhaps measure that for all of us, plus weigh + hwd.....and how much current it sucks under load. Measure the Vdc...right at the pump when u do this.
Interesting link. All that data is theory though correct?http://caddyinfo.com/wordpress/gonn...pumps-in-series-to-maximize-cooling-motorama/ You may have read this info b4. 1-2-3 Bosch pumps in series...vs 1-2-3 jabsco cyclone pumps in series. 2 x Bosch is better than 1 cyclone. 2 x cyclones is better than 3 x Bosch...and very effective. The gain from a 3rd pump is minimal, 6%. Either 2 x bosch or 2 x cyclones was the most effective setup.
Yeah, it's a BEAST! I'm skeptical that two GT500 pumps in series will outflow it though.That re-programmed stewart emp flows a bunch.... but the damned things sucks 25A !
That will cost about the same as the Lingenfelter pump.Extrapolating the data... two of the 13-14 GT-500 pumps in series...along with 1.25" fitting and hoses, where ever possible, and big enough ga wire to minimize V drops is probably going to be as good as it gets.
It has 3/4" fittings.
I haven't run this exact test, but something like it. With the EWP150 (turbo pump) at 1.25" everywhere (a full system with IC, HE and hose) it moved 19gpm . I put a 1" ID 1" long restrictor at the IC (in and out) and flow dropped to 16.75gpm. If you run the turbo pump at 1" everywhere it flows 14gpm. So there is absolutely an improvement in running bigger lines and keeping the restrictions to a minimum. But, if you run the Turbo pump at 3/4" everywhere it flows 8.5gpm. So it takes a pretty good whack at 3/4".
Fuzzy math says that if you run the Turbo pump and everything at 1.25", but pout a 3/4" restriction in you get 11.4gpm. Fuzzy math though. But maths out that there is an advantage running 1.25" everywhere on a 3/4" restriction.
That said the 13' GT500 pump will have to work VERY well to be a better buy than the Turbo pump. The Turbo pump is a lot less money, it has 1.25" ports and I don't think the GT500 pump will out flow it. Maybe it will on a full 3/4" system, maybe. But I highly doubt it will at 1" and 1.25".
I have one here. That's the plan.
Interesting link. All that data is theory though correct?
Yeah, it's a BEAST! I'm skeptical that two GT500 pumps in series will outflow it though.
That will cost about the same as the Lingenfelter pump.
I will say that Pierburg pump used in the 13/14 GT500 is a huge improvement over the earlier Bosch pumps. With the Bosch pump, flow inside the reservoir was a "ripple". Install the Pierburg pump and flow inside the tank looks like a jacuzzi. Not the scientific flow data your looking for, but visually there no question the Pierburg flows "a lot" more than the Bosch.
I did not test my 2013 pump when I installed it - let's put it this way, I'm sure it's doing the job. I'd say the water doubled in velocity thru the lines. Easily.
I did not test my 2013 pump when I installed it - let's put it this way, I'm sure it's doing the job. I'd say the water doubled in velocity thru the lines. Easily.
Described above. Dumped return line into calibrated bucket for 30 seconds. Gallons x2 = GPM.How did you measure the gpm in your loop?
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Described above. Dumped return line into calibrated bucket for 30 seconds. Gallons x2 = GPM.
I use a flow meter in a closed loop.How did you measure the gpm in your loop?
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