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Discussion Starter #1
I am thinking of swapping a LS into my jetboat and trying to decide on fuel system. I want to try to make sure everything is coast guard compliant, but that seems to be fairly difficult with EFI. I have been collecting parts for years and have a mercruiser cool fuel III module that I was planning on using. The low pressure lift pump is bad but it appears to be a walbro pump thats easily available. Seems like there`s a lot of people who hate these things on stock boats though and say they are nothing but trouble. By the time I buy the new fuel pump, filters, and the module to engine hose (I need the proprietary fitting that hooks to the cool fuel module) it would be more expensive than just buying a volvo style fuel cell. https://www.ebay.com/itm/For-Volvo-...966665?hash=item5b514c1d49:g:HGMAAOSwXx9b2B2J Does anyone have experience with either of these systems? they both seem fairly complicated an prone to issues. My other thought is to use an aeromotive A1000 marine pump, but it looks like they recommend a 5/8 feed line? or to just put a aeromotive/walbro/etc high pressure pump in the stock tank and run Shields 368 Series A1-15 Low Perm Fuel Hose all the way back to the engine. Anyone have any other pumps/hoses that they have used with good results?
 

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I've got a Volvo Penta 5.0Gi, it uses that pump you listed. The boats a 2000 and I've replaced that module one time, about 7 years ago. (it was way more expensive back then, like 600 bucks) It's worked fine. For a while, about that time ago, they started having issues with the ethanol in the fuel eating some of the paint overspray where the filter mounts and also corrosion gumming up the works. I don;t hear about that much now. I don't know how much HP you are planning on running, but the lines that go to and from it aren't that large, I know the module is for all the VP engines of that era, but if I had to guess I'd say 400-425 HP would be the limit for the pump. Volvo rates that pump at 50-60 psi. Does not give a flow rating though. It does have water cooling, uses small lines, like 5/16.

(the boat that it's in is not a jet, it's a Stingray with an outdrive, family truckster model.......)
 

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Looking at your link again, not sure who makes that pump. If it is original Volvo, that's a smoking deal. The originals used carter pumps.
 

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Discussion Starter #4
That is not original volvo, its an aftermarket. You can also buy aftermarket pumps for the module and a filter for under $100 now. For now it`s going to be a stock lq4 motor. If it seems to run well I will probably swap in a cam, possibly 243 heads. I am fairly confident I would keep it under 500hp so it should have enough capacity to support my motor.
 
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