PCM 351w Pro Tech EMS Conundrum

KENO wrote: The one you have now will probably clear the float adjustment screws on the Quick Fuel since it clears the screws on the Holley. It might take a little minor dimpling with a hammer......maybe Keep it, clean it up and get one of the hose adapters from K&N like in JO's picture for the fuel pump ruptured diaphragm overflow line. Or here's a link to something on EBAY that has the right fittings (actually one extra that could get taken off or left as is).  You'd have to see what you have for clearance to see if the height will work Barbron made lots of the flame arrestors for inboard engines over the years link The fuel pump line dumps fuel inside the arrestor instead of outside like the K&N little adapter. Most every arrestor with that fuel pump line dumps inside the arrestor, there must be a reason for that  Not high on JQ's list but a Sierra 81-8115 fuel line works for lots of people and it's USCG approved

Unfortunately the arrestor on there now is just disintegrating, so I'll go with a new one. I might return the one I already ordered or just buy some of those bolt on fittings. Super annoying it doesn't come with them. Thanks for all the links and tips though, greatly appreciated.

The one you have now will probably clear the float adjustment screws on the Quick Fuel since it clears the screws on the Holley. It might take a little minor dimpling with a hammer......maybe

If the Jeg's kit is the one in the link below, 793-M-600QFTK, I think you'll find that the fuel line/filter works good on a Chevy with the distributor in the rear and the fuel pump on the opposite side from your 351 .

I opted for the quick fuel 600cfm which was purchased as a kit on jegs after reading a handful of people's experiences with them. I also snagged a DUI dizzy as well. Fuel lines will be marine.

Few other answers to questions I saw in the thread:
As far as the clear line from the fuel pump, previous owner just tied that off at the end, what a guy.

Will definitely check the belt issues, hadn't noticed that rubber dust build up till it was mentioned here.

As far as alternator, unsure how they determined it was automotive. It may have just been that it was going bad, but the shop mentioned it as a top priority with the other automotive parts for replacement. I was going to replace it either way as it looks pretty old and beat and we've had some starter issues in the past. Obviously I now know a thousand other reasons that it was likely having issues, but this should keep me going steady for some time now.

Thanks for everyone's input!!

KENO

Jonny Quest wrote: For reference, this is what my QuickFuel & D.U.I. project looked like when completed: And for those of you with sharp eyes, the braided  stainless steel fuel line did not carry the USCG stamp of approval.   Some might notice that it's an M650 in your picture  and some might wonder if he (Ostler 917) bought an M600 or 650 and what kit he bought with the flame arrestor and fuel line Maybe a kit from Jeg's?

The fuel pump clear safety hose has been "hacked" and doesn't run up to the carb, but rather down into the bilge.  That might be the biggest fire risk problem in the engine compartment.  Also, it also appears that the previous owner ran out of red plug wires and went with a smaller diameter yellow wire.  Can't be having that.  The red wires will get jealous and start cross-firing.

Alright, after a good long Convo with Jonny Quest, and the service center that found all this hack job stuff, I've opted to grab a new quick fuel Holley carb which comes with a new fuel line and spark arrestor. Also got A new marine starter, and a D.U.I. distributer. I'll definitely post an update once I get it up and running again, and will feel so much better not running a bunch of automotive parts on this boat. Cheers to not exploding on the water.

The non-marine components can be a bit troubling from the safety standpoint.  Does the automotive distributor have a vacuum advance?  Post a couple of pics so we can get a good look at the hack-job conversion.