Is the 525 reverse cooled?
Thanks
Steve
Thread: 525 Reverse cool?
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11-20-2009 06:15 PM
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11-20-2009 08:28 PMwww.merperformancemarine.com
843-399-8785
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11-23-2009 08:48 AMThanks It looks like the pump is driven by the back of the belt. So I was thinking reverse cool.
Steve
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11-23-2009 03:37 PM
It is a reverse rotation water pump, but the coolant flows in the typical path. The water pump (circulation) spins the opposite direction from the engine.
Eddie
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11-23-2009 05:22 PMThanks!
I have a set of 525 heads I can get on the cheap. I like the 525 FWC setup and was looking at using it. While the heads are fresh and cheap the parts for the FWC are $2100.00. I know the head design is just ok but I am not trying to make more than 600 hp with a 540 CI 9.5 CR. The donor engine is an Hp 500 carb and I feared I would need a serpertine setup if reverse cool was needed.
Thanks
Steve
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11-23-2009 07:38 PM
FYI, The HP525efi OEM (Edelbrock/Merc) cylinder head has a unique bolt pattern on the exh side, convential BBC exh will not bolt up.
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12-19-2009 12:06 AMThe vanes on the bronze impeller in the Merc water pump are straight. So the pump can turn either direction and will still pull water from hose inlet and push it into the block. The housing is the same as old BBC (1960's) short pump but with Merc impeller.