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speedymopars

  • Karma: +6/-0
speaking of fuel pumps
« on: February 13, 2008, 06:20:49 PM »
What is the difference between a Marine and auto mechanical fuel pump? Is it just the air port on the back side of the diaphram isn't open to the air? If so, how are the marine versions? Do they breathe into the engine or is there a hose going to the carb or something? Are there other differences?

I have a choice of mechanical auto pump or auto electric in my garage.  I need to figure out if I can modify the auto mechanical pump to marine specs or if I need to buy another pump.   Any advice?
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21' 74 cheyenne 543 Mopar Berkeley Jet Place diverter

beerjet

  • Karma: +81/-0
Re: speaking of fuel pumps
« Reply #1 on: February 13, 2008, 06:54:06 PM »
Did any of the boats in the seventies have "MARINE" equipment ? Therefore I dont use any .  ;D

-beerjet-
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i dont but im all for stuffin shit in her ass to make her go away :-*

GAWnCA

  • Karma: +1/-1
Re: speaking of fuel pumps
« Reply #2 on: February 13, 2008, 07:44:35 PM »
I think all this stuff came about because of the TREE HUGGERS and the EPA, and now the C.G. has to enforce this crap.  :banghead: :mad: :screwy:
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~Greg
Forgive your enemies.  It messes up their heads.

Marcsrollin

  • Karma: +33/-0
Re: speaking of fuel pumps
« Reply #3 on: February 13, 2008, 07:48:22 PM »
Alot of it is due to covered motors. And fumes and sparks accumalating. It is mostly due to stupid people!
  • Boat #1: 1978 TX-19 Youngblood
  • Boat #2: 1994 24 foot Sundancer Pontoon
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Taco'd "a person or people that show up with one lake lice and a family of 50 and cram 3 people at a time on it with no disregard to boating rules or ethics. Usualy crap in toilets and throw shit paper in trash cans. Hang out at the boat ramp like its a swimming hole. Have zero insurance on anything they own and dont give two shits less about your property."

HDriderTH

  • Karma: +12/-0
Re: speaking of fuel pumps
« Reply #4 on: February 13, 2008, 07:48:44 PM »
that shit is for covered motor boats
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'82 Sanger Bubble deck, Blown 454....V-drive

speedymopars

  • Karma: +6/-0
Re: speaking of fuel pumps
« Reply #5 on: February 13, 2008, 08:22:50 PM »
I have a covered engine compartment....and a family who may borrow my boat and not do things right. I don't want to lose them or sink my boat over a few $$$.

I've upgraded to a marine starter and alternator (the major source of sparks), I figured I might as well get the marine grade fuel pump (or convert it) so I worry less about the family.

I also plan on running a o ring on the distributor cap, to take care of the last spark potential . The carbs don't have j tubes, but I put a hose tying the two float bowls together with the vent on the bottom to simulate what a j tube does. Other than that, I can't think of what else I need to be safer.

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21' 74 cheyenne 543 Mopar Berkeley Jet Place diverter

propless

  • Karma: +12/-0
Re: speaking of fuel pumps
« Reply #6 on: February 13, 2008, 08:48:39 PM »
Speedy,
 If you realy think its needed and cant find a marine pump for the Mopar.  Maybe you could drill the regular pump, attache a vent hose fitting, and run the vent hose to the fuel tank vent hose.  ???  I think the whole idea is, if the pump diaphragm goes bad the fumes/fuel will be vented out of the engine compartment .

 just an idea . ;D
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Welcome to the club of broken boats :o  Pay here$ bend over and move along.

speedymopars

  • Karma: +6/-0
Re: speaking of fuel pumps
« Reply #7 on: February 13, 2008, 10:25:34 PM »
Speedy,
 If you realy think its needed and cant find a marine pump for the Mopar.  Maybe you could drill the regular pump, attache a vent hose fitting, and run the vent hose to the fuel tank vent hose.  ???  I think the whole idea is, if the pump diaphragm goes bad the fumes/fuel will be vented out of the engine compartment .

 just an idea . ;D


That is what I thought the difference was, a vent fitting. I wasn't sure if there were any other differences (I couldn't think of anything else it could be though).  Just trying to be safe- after  my last accident, I'm leaning twords safer than not... Thanks  :)
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21' 74 cheyenne 543 Mopar Berkeley Jet Place diverter

 


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