cross over or circ pump
03-05-2009, 06:31 PM
#2
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I use the EMI crossover with thermostat and bypass. I like it and have not problems. I also have a large oil/ps cooler that pre heats the water. The temps are very stable.
03-06-2009, 08:15 AM
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circulating pump
if you are using a bravo drive then the water is comming from the sea-water pump.you pick up h/p by not running the circulating pump.as said by others,run a t-stait .i think the h/p gain is around 5-10.hope this helps.
03-06-2009, 02:11 PM
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if i understand correct, the crossover works only at raw water cooling systems, no closed coolings.
03-06-2009, 08:42 PM
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Say what you will, Mercury Racing has some very durable racing motors. This one (and many other models) have a recirculating water pump. You decide which is best for you.
http://www.mercuryracing.com/sterndrives/hp525efi.php
http://www.mercuryracing.com/sterndrives/hp525efi.php
03-07-2009, 07:13 AM
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I had a 468 putting out about 500 hp with a cross over and bypass and ran it for 5 years with out issue. Unfortunately it threw a fan belt and because i did not have a warning horn and wasn't paying attention to the guages I cooked it. Same thing would have happened with the water pump though.
