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Old 24-12-2019, 16:25   #1
EVO8ARD
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Monster Sport water pump pulley

Hi from France,

I'm building a high spec street/rally car Evo 8/9 and I'm hesitating to fit an aluminium oversize water pump pulley from Monster sport

https://www.nengun.com/monster-sport/water-pump-pulley

Engine is fully build and balanced and I use a Fluidampr crank pulley. Max Rpm of the engine is 8500Rpm, it has a PWR oversize radiator, power steering and Air conditioning compressor.

Do you think it's good idea to increase water pump rotation ? The car is not a full race car, it's drive on mountain pass and run in traffic usually, and can be stuck in traffic jam at idle at 40░C exterior temp at summer.

What about the wear with aluminium compare to OEM ? (Monster sport product are top quality materials, not crap Ebay pulley...)

What about the balancing of the water pump unit compare to OEM ?

Thanks for your feedbacks
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Old 24-12-2019, 18:38   #2
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Interested in the replays to this. I would think this is expensive for what it is

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Old 25-12-2019, 06:29   #3
Beef Curtains
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Why would you want to affect the engine cooling in that way?

If the water is being pumped round the engine quicker, it is spending less time in the radiator. Less time spent in the radiator, means less cooling time.
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Old 25-12-2019, 13:51   #4
kikiturbo
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Actually, this is an underdrive pulley... i.e. it will spin the water pump slower than OE... The idea being less cavitation and losses at high RPM...
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Old 25-12-2019, 15:24   #5
EVO8ARD
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Exactly, the main idea is less cavitation and reduce weight, for higher rev's.
Do you think it's a bad idea to use it ?
What about the wear with aluminium compare to OEM ?

https://www.monster-sport.com/produc...ley/index.html
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Old 27-12-2019, 12:58   #6
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You would only get cavitation if you have a restriction of water flow going into the pump.
Personally I would not want to slow the pump down, by doing so you would be decreasing flow and system pressure. You want the pressure as it raises the boiling point of the coolant and will also decrease the chances of hot spots forming.
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Old 28-12-2019, 20:18   #7
Andrew B
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Evo spec sell them

Very popular
No cooling issues even 1000 bhp north
I use one also
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Old 29-12-2019, 00:16   #8
Lolo la Torche
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Salut compatriote!

Why do you think you will have cooling problems? Do you already have issues to fix?
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Old 01-01-2020, 12:52   #9
EVO8ARD
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Hello Mr Lolo, southern neighbor
It was just to check if if add a cooling benefits

Thanks everyone for your feedbacks
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Old 01-01-2020, 19:07   #10
Lolo la Torche
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Where are you from? Do you know there is an interessant community of Evos owner in France?
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Old 01-01-2020, 19:34   #11
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Salut Laurent, c'est Victor de Frejus (Vic Tory sur FB)
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