DRR Top Comp
| I do not think there is an electric pump made that could move water too fast. https://postimg.cc/gallery/np3zpruo/"Dunning-Kruger Effect" -a type of Cognitive bias where people with little expertise or ability assume they have superior expertise or ability. This overestimation occurs as a result of the fact that they do not have enough knowledge to know they don't have enough knowledge. Before you argue with someone ask yourself, "Is this person mentally mature enough to grasp the concept of a different perspective?" If not there is no point to argue. 4X NE2 CHAMPION. 2020 TDRA NE2 Champion |
| | | Posts: 4278 | Location: United States of Texas | Registered: April 02, 2011 | 
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DRR S/Pro
| Let us know what ole Jerry says. I'm with Green1.
Illegitimi non carborundum
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| | | Posts: 2368 | Location: OKC, OK | Registered: February 15, 2008 |
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DRR Sportsman
| quote: Originally posted by Triple Nickel:
Sounds like Jerry knows his stuff. The only reason electric pumps flow better when restrictor plates are used is because they can also cavitate if the system design isn't correct. More flow is always more cooling assuming you get some heat out of the system by the radiator which even in the case that the fan isn't working all that great, the radiator still serves as a heat sink.
According to Jerry, restrictions shouldn't be used with electric pumps because the small motors don't handle the resistance very well. They only create about 5 psi and a restriction becomes a problem. |
| | | Posts: 465 | Location: Maryland | Registered: January 23, 2007 |
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DRR S/Pro
| quote: Jerry says you can't flow too much.
Bingo! I don't know how that restrict flow thing got started or how it continues to convince some people.... but it does. It's an engine vs. radiator ratio thing. The more it circulates through the radiator the more heat it's going to dissipate. An 800hp engine producing heat vs. a Scirocco radiator that is designed to cool a 125hp engine. You had better be dissipating heat through increased flow as much as possible.
Illegitimi non carborundum
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| | | Posts: 2368 | Location: OKC, OK | Registered: February 15, 2008 |
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DRR Pro
| quote: Originally posted by Ron Gusack:
Jerry says you can't flow too much. He said that's internet myth and he explained it further when I told him that the "flow too much" info was around long before the internet because we used to break thermostats back in the 70's to slow the flow down. He said the mechanical pumps would go into cavitation and not pump at all when rpm's got above 5k. Some would change pulleys to slow the water pump rpm and that led others to believe that was to slow the flow so the washer restrictors popped up. He said restrictors have a use when the engine runs too cool. Sharp guy, thanks for the contact.
So what did Jerry recommend for pump gpm size given your engine and radiator size? I replaced my 37 gpm Areospace with a new Meziere 35 this year and it is exactly the same in cooling for my application. |
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