PDA

View Full Version : FUEL PUMP BS



OC PARTYCAT
07-03-2001, 10:44 AM
A FRIEND OF MINE HAS A 1991 24' COMMANDER WITH A 7.4/BRAVO 1.ON A RECENT TRIP TO HAVASU HIS FUEL PUMP WENT BAD.HE TOOK THE BOAT TO (IWONTSAY)AND THEY TOLD HIM THE CAMSHAFT THAT RUNS THE PUMP WAS ALSO BAD.AFTER HIM TELLING ME THE PRICE TO FIX (ABOUT 800.00) I TOLD HIM TO RIP THAT WHOLE MERC CONTRAPTION OF A FUEL PUMP OUT OF THE BOAT AND GET A ELECTRIC PUMP OR BOLT A NEW ONE RIGHT TO THE SIDE OF THE MOTOR. HE WENT BACK TO THE MECH. TO TELL HIM "PUT AN ELECTRIC ONE ON" THE MECH. REPLY "YOU CANNOT PUT AN ELECTRIC FUEL PUMP ON THE MOTOR THERE IS TOO MUCH PRESSURE. YOUR ONLY OPTION IS TO FIX THE MERC. FUEL PUMP." SOO ABOUT 800.00 LATER HE HAS A NEW ONE ON. I WORK ON ENGINES ALOT AND KNOW THIS GUY HAS TO BE FULL OF #@$#
MY EXPERIENCE IS WITH CAR MOTORS NOT BOATS.
WHAT IS THE DIFF AS FAR AS FUEL PUMPS GO? THIS WHOLE DEAL THAT MY BUD HAS GONE THROUGH SUCKS. AM I RIGHT??? THERE IS A THING OUT THERE CALLED A REGULATOR RIGHT?

spectras only
07-03-2001, 12:55 PM
party cat ,that mechanic is full of bs.You can get electric pumps with built in regulator,he just wanted to sell his product only

OC PARTYCAT
07-03-2001, 01:41 PM
I KNOW IT IS A BUNCH OF BS! THE GUY GAVE MY BUD A T-SHIRT TO MAKE HIM FEEL BETTER ABOUT THE WHOLE SITUATION.
[This message has been edited by OC PARTYCAT (edited July 06, 2001).]

spectras only
07-03-2001, 03:06 PM
partycat,I would contact Jim and ask him what was involved to address your friends problem.I assume your friend's engine is a carburated model with a mechanical fuelpump.By removing the pump it's easy to see if the plunger moves while turning the engine over.If it doesn't than the lobe is gone and you just block off the pump acces,and install an electric fuelpump with an internal regulator [carter,mallory etc...]I don't believe Jim would put his reputation on the bend over a simple solution.Maybe he'll have a talk with his mechanic if there was an alternative to solve your friends problem?

superdave013
07-03-2001, 03:18 PM
Jim is a straight up guy. I have never seen a US cost guard approved electric fuel pump. That might be a reason why he would not install it on an enclosed engine. Unlike your cars, fumes build up in the engine compartment and BOOM when the pump is turned on. That would be the only reason that I could see as we all know an electric pump and a regulator would be ok otherwise. You an I can install one on our boats but a shop has to much liability at stake.

OC PARTYCAT
07-03-2001, 03:22 PM
I REALLY DO NOT LIKE TO BAD MOUTH ANYONE BUT THE TRUTH IS THE TRUTH. HE TRUSTED HIS WORD AND SPENT A LOAD OF MONEY ON SOMETHING THAT COULD HAVE BEEN 150.00
[This message has been edited by OC PARTYCAT (edited July 06, 2001).]

OC PARTYCAT
07-03-2001, 03:25 PM
SUPERDAVE,IF YOU GO TO EDDIE MARINE SITE THERE HAVE A COUPLE USCG APPROVED PUMPS. THEY ARE OUT THERE.ANYWAY WHY WOULD YOU NOT BE ABLE TO JUST BOLT A MECH. PUMP TO THE SIDE OF THE BLOCK AND USE THE ENGINES CAM TO RUN THE PUMP,INSTEAD OF SOME BIG OL PIECE OF CRAP THAT MERC CAME OUT WITH TO MAKE A FORTUNE.

Havasu Hangin'
07-03-2001, 03:28 PM
Originally posted by superdave013:
I have never seen a US cost guard approved electric fuel pump.
I don't know about Coast Guard approved...
http://www.holley.com/HiOctn/ProdLine/Products/Marine/FMS/FMSFP/712-801.html
http://www.holley.com/HiOctn/ProdLine/Products/Marine/FMS/FMSFP/712-802.html
http://www.holley.com/HiOctn/ProdLine/Products/Marine/FMS/FMSFP/712-815.html

OC PARTYCAT
07-03-2001, 03:36 PM
HOLLEY PART # HL-712-801 "USCG APPROVED"!!!!!!!!!!!!!!!!!!!!!

OC PARTYCAT
07-03-2001, 03:43 PM
THE REASON NOT TO INSTALL AN ELECTRIC PUMP WAS "THERE IS TOO MUCH PRESURE" NOW THAT RIGHT THERE IS BS SINCE YOU CAN EITHER BUY ONE PRESET OR BUY A REGULATOR AND ADJUST. I CALL IT AS I SEE IT.IS IT POSIBLE TO THROW AWAY THAT WHOLE MERC SETUP AND BOLT A MECHANICAL PUMP TO THE BLOCK AND LET THE CAM RUN IT (LIKE IT WAS MENT TO DO)
[This message has been edited by OC PARTYCAT (edited July 06, 2001).]

OC PARTYCAT
07-03-2001, 03:46 PM
aaaa
[This message has been edited by OC PARTYCAT (edited July 06, 2001).]

Havasu Hangin'
07-03-2001, 03:51 PM
Hey OC PARTYCAT,
A little "heads up." When typing:
CAPS=YELLING
So if you meant to yell, my bad. http://free.***boat.net/ubb/cool.gif

OC PARTYCAT
07-03-2001, 03:56 PM
i aM sOrRy DiD nOt WaNt To YeLl In YoUr EaR

Racing Ray
07-03-2001, 04:06 PM
.
[This message has been edited by Racing Ray (edited March 12, 2002).]

Havasu Hangin'
07-03-2001, 04:07 PM
Originally posted by OC PARTYCAT:
i aM sOrRy DiD nOt WaNt To YeLl In YoUr EaR
No need to apologize. I believe the punishment for that particular offence is that everyone on the thread gets to hang out on your boat for a full day- without wiping it down after!
http://free.***boat.net/ubb/tongue.gif http://free.***boat.net/ubb/tongue.gif http://free.***boat.net/ubb/tongue.gif http://free.***boat.net/ubb/tongue.gif http://free.***boat.net/ubb/tongue.gif http://free.***boat.net/ubb/tongue.gif http://free.***boat.net/ubb/tongue.gif

Craig
07-04-2001, 08:23 AM
Originally posted by Havasu Hangin':
No need to apologize. I believe the punishment for that particular offence is that everyone on the thread gets to hang out on your boat for a full day- without wiping it down after!
http://free.***boat.net/ubb/tongue.gif http://free.***boat.net/ubb/tongue.gif http://free.***boat.net/ubb/tongue.gif http://free.***boat.net/ubb/tongue.gif http://free.***boat.net/ubb/tongue.gif http://free.***boat.net/ubb/tongue.gif http://free.***boat.net/ubb/tongue.gif
Damn, that's a tough punishment. You know you can hang out at the sandbar for 12 hours and the weathers great, but damn, when you get the boat back at the marina to wipe it down, why does the temp have to go up 50 degrees !!!!! Oh yeah, and where did all my friends run off to??
Craig

superdave013
07-04-2001, 08:41 AM
I did not know Eddie had USCG pumps. Thanks for the info. I also have never owned any thing other than 1 jet & 3 v-drives so I am not the most knowledgable on the mec set up. I do know that on most mecs you can't use the standard fuel pump mount as there is a bunh "O" stuff in the way. Think it's the water pump but not real sure.
Oh, my boat is down right now so after the full day of hanging out on your boat I will still help wipe it down.

Havasu Hangin'
07-04-2001, 08:49 AM
We set the "Fuel Pump" on fire!!!
Perhaps we need a Coast Guard approved thread...
http://free.***boat.net/ubb/biggrin.gif http://free.***boat.net/ubb/biggrin.gif http://free.***boat.net/ubb/biggrin.gif

nitro557
07-04-2001, 10:27 AM
have you friend look closely at his bill he more than likely had to have the seawater pump replace along with the pump , when the pump goes out it takes the water pump with it 90% of the time the fuel pump was probobly around $70 and the seawaterpump at 350 plus 5-6 hours labor, changeing to a electric pump would have been more

Havasu Hangin'
07-04-2001, 11:30 AM
Originally posted by superdave013:
I did not know Eddie had USCG pumps...after the full day of hanging out on your boat I will still help wipe it down.
No need to start wiping, yet. More fuel for the "Coast Guard Approved" fire:
I believe Coast Guard regulations mandate a "hard" fuel line between the carb and the pump. This would require mounting the electric pump on the block, probably on or near the exhaust manifold, and bending a hard line.
Most guys with the electric pumps mount them off the engine (cooler- no vibrations) and run hose. I'm not sure if the Coast Guard counts even steel braided w/aircraft fittings to be "hard" line.
Anybody have a Coast Guard regulations manual? Weren't we all given one when we bought our boats? http://free.***boat.net/ubb/confused.gif

nitro557
07-04-2001, 12:28 PM
your pretty right on it has to be hard line from the pump to the motor you could mount the pump on the stringer, steel briad i dont know if it will pass , what i think is the stupid rule is even if your carb is out of the engine cover you still need a spark arrester

spectras only
07-04-2001, 01:25 PM
Havasu,it's a new thing about the solid line on the pressuer side.Most marine surveyors looking at this application now,when appraising or approving for insurance purposes.However the fuel lines that have fuel line "uscg approved" written on it would pass anyway.I just had my boat surveyed last year without a hard fuel line.There are coast guard approved alternators without flame arrestor screens,so appearence would be misleading.Another area is carburators.A marine carburator would have "J" tubes to direct flooding down to the carb's throat rather than spill it outside,further reducing the chance of fire.

OC PARTYCAT
07-05-2001, 06:34 AM
there is plenty of room for everyone I just want to get the proper info on the pump. I have seen alot of jet boats with a electric fuel pump with the filter/separater mounted to the bottom of it. I dont know what type of pump this is but I am sure it would work fine along with all the other USCG pumps.The whole deal with the merc pumps being to hard to push is wierd. why is this? what makes that oil/cam whatever of a setup different than a engine cam running a pump. I am sure the engine cam is just as strong as the merc setup. A engine cam does get oiled, and have you ever tried to push down on a valve spring with you hand.imposible? there is no way a merc fuel pump is harder to push than a valve spring even with the rocker angle.so an engine cam must be ok.Even if it wasnt,why not buy a different pump that is not merc?
[This message has been edited by OC PARTYCAT (edited July 06, 2001).]

Racing Ray
07-05-2001, 07:52 AM
.
[This message has been edited by Racing Ray (edited March 12, 2002).]

OC PARTYCAT
07-05-2001, 08:28 AM
Check out holley pump # 712 327 I wonder if it is as hard to run as a merc pump. It is a marine pump so it does have the vent line,and I am sure it can bolt to the block,and be ran by the engine cam.I did not say you can not run hd springs on a stock cam. I was comparing springs to a merc fuel pump. Which takes more to run? I am sure it is the spring,so why cant you run a merc pump off the cam?
[This message has been edited by OC PARTYCAT (edited July 05, 2001).]

Havasu Hangin'
07-05-2001, 08:47 AM
Originally posted by OC PARTYCAT:
Check out holley pump # 712 327 I wonder if it is as hard to run as a merc pump
I've got that pump on my boat. No idea how tough it is against the Merc pump. So, I guess what I'm trying to say is...I'm no help at all.
http://www.goldenplasma.f2s.com/forum/smilies/tongue03.gif

Oldsquirt
07-05-2001, 09:00 AM
OC, how about doing yourself, your friend and all of us a couple favors. First, get a hold of your buddy's repair invoice and list all the parts that were changed. Then, call Jim Wilkes and get HIS explanation of why he made the repairs he did as opposed to modifying to run an electric pump. Finally, report back to us. We all agree that the electric pump is a do-able thing, but maybe there was more to this than your friend explained.
Almost forgot, could you look at the fuel pump setup on his boat? Does his pump mount through a water pump housing or is it mounted directly to block?
[This message has been edited by OLDSQUIRT (edited July 05, 2001).]

spectras only
07-05-2001, 09:09 AM
Partycat,the Holley pump HO/712 is a coastguard approved unit,130 GPH-7.5-9 PSI,and it's available for a discounted price of $120 US,from California Marine.No taxes for US residents.

superdave013
07-05-2001, 02:36 PM
Racin Ray, Clay Smith makes an aftermarket mech. pump with the vent line too. They are very nice pupms.
But you still can't use it on the merc set-up as the water pump is in the way.
I agree with Old Squirt, check it out a little more and let us know.

superdave013
07-05-2001, 02:39 PM
I ment to say you can't run it off the cam on a merc set up because the water pump is in the way.