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Messages - Huffa

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Is your water pre heated in any way before it goes into the block?

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Thanks Ray. That could be an idea.

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Thanks obnoxious. The boat is purely for recreation but I do like to run reasonably hard. So did the 1000hp engine you had run a water pump system? If you were me what set up would you use? Water pump or non water pump?

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Thanks for that guys. Yea it would be nice to bolt something directly on and keep it tidy. TJS Nordic how long have you run your system for and do you run your boat for long periods at a time? What temp does it run at and does the temp fluctuate much? My running is an hour or so one way normally in braided shingle rivers.

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Well I have been advised by the performance jet boat engine builder to run a water pump. The non water pump systems seem very crude as cold water is going into the block and thermo shock can be an issue. But I am willing to look at anything. The trouble I have is here in New Zealand no one really runs 671 blowers in family boats so I dont have any other similar set ups to copy.

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Heres some pics. This is the old motor with thermostat housing attached This is a Rex tpe thermostat housing I have . Its a non water pump housing. They are not recommended for blown engines and I am not sure if it would even work mounted on its side.

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Engine Mechanical / Electrical / Supercharged 350 Chevy-Cooling system
« on: October 05, 2012, 02:15:06 AM »
I have just put a 350 Chevy in my jet boat running a Weiand 671 supercharger and am trying to work out a suitable cooling system. I want to continue to run a water pump as I did with the non supercharged motor but the trouble I am having is with the thermostat hole on the inlet manifold faces forwards rather than upwards like a traditional manifold and there is a lack of room. Has anyone got any suggestions on what thermostat housing would work for me? Thanks

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