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Thread: Rochelle craft 460 heating
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06-04-2009, 09:55 PM #15000 RPM
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Rochelle craft 460 heating
Hi I sold my friend a Rochelle Craft with a Jacuzzie pump and we put a 460 ford in it and it over heats so we back flushed all the lines so it is clear from the bowl to the engine but not seeming to move the watter any ideas
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06-14-2009, 05:35 PM #2
How is the water enter and exit the motor? Pics help
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06-14-2009, 06:39 PM #35000 RPM
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Off the jet then right to where the water pump is supposed to be then through the engine and back out the thermastat housing down to the hardin marine exhaust logs and out
Last edited by 455maveric; 06-14-2009 at 06:42 PM.
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06-15-2009, 08:54 AM #45000 RPM
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Water from the pump to tee then one side to a( in) manifold then out to engine (in ) and out from the thermostadt to snails or other elbowes. The other line goes the same only the other side.
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06-15-2009, 09:15 AM #55000 RPM
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Ok i understand what you are saying to rout it but i dont think any watter is even flowing he burnt up one engine and hasnt put another in yet but we will be looking to make sure water is being pumped to the engine thats what it acts like there is no watter
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06-15-2009, 01:54 PM #65000 RPM
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Start the engine with water ,check the water moving thru the lines. Open up a discharge line to see if its pumping and be sure the theromstadt is opening. It takes lots of water
460 cannot take too much overheating or you will crystalize the bearing and rings
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06-15-2009, 03:15 PM #75000 RPM
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He Fried that engine just wondering why watter wouldnt be flowing due to we back flushed all the lines and no blockage and we ran it with out a thermastat
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06-15-2009, 03:36 PM #85000 RPM
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Sounds like the raw water pump is worn out or whatever. I am a v-drive guy, however a pump is a pump. Merely to backflush doesn't necessarly solve your problem.
1) you need the jet drive to pump the water that goes thru the manifolds, block and risers. This water is on a open route until the water goes back to where it came from (river)
2) If it won't do that you have blockage, the hose and fitting are only 5/8 fittings.
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06-15-2009, 04:32 PM #95000 RPM
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Umm it is a jet drive they dont have a raw watter pump it just comes off the jet pump
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06-16-2009, 04:43 AM #105000 RPM
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I understand, however the jet pump is the raw water in this instance.
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06-16-2009, 05:05 AM #115000 RPM
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yes that is why i dont understand why it seems to not be moving it through the engine.
We hooked the garden hose up and ran it water ran through the engine and out through the exhaust so it not pluged up that wayLast edited by 455maveric; 06-16-2009 at 05:51 AM.
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06-16-2009, 07:08 AM #125000 RPM
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It sure sounds like the Berkley pump, call or .e mail /Tom over at Jet Performance, he will solve your problems for sure.
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06-16-2009, 07:11 AM #135000 RPM
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need please call us at 1-805-466-4719 or email us at jetboat911@sbcglobal.net Thanks - Tom