Randy

Hi guys I am building a 598 ci motor trying to
get about 800 up. My question is on the fuel pump
I am wondering if the stock sea pump driven pump with
the K E pump on it would supply enough fuel. Has anybody
used this set.

MILD THUNDER

iTrader: (3)

I am guessing a 598ci will be utilizing a block that has a fuel pump mounting boss.

I would use this mechanical block mounted pump.

http://teaguecustommarine.com/em0011...uel-pumps.html

ezstriper

I have no idea on that pump deal..But I hate them....what setup are you running ? I would look at a aeromotive A1000 and a return regulator, make sure the tank pickup in a min of 3/8 with no anti siphon valve, 1/2 would be better, you can get a diesel boat tank sending unit that has a return fitting in it already or some dump in filler hose...I would not run the water pump driven pump but thats my .02 Rob

MILD THUNDER

iTrader: (3)

Im running that style pump i listed at 800hp forced induction feeding twin 850 carbs. Mercury used the same style pump on the 800/900sc. No regulator needed.

Randy

MILD THUNDER, The block does have the provision for a block mounted fuel pump, the problem is there is not enough room between the sea pump and the block to mount one. Unless I am missing something that's the way it looks to me. I would rather not run a elec. pump if I don't have to.

Budman II

iTrader: (1)

MT, what fuel pump pushrod are you running with that? I'm assuming you are running a billet steel camshaft, correct? Have read that you have to run a bronze tipped rod, or some are running a composite rod.

Vinny P

This is what you need to run.

http://www.summitracing.com/parts/cca-4607

Randy,
While I am sure some would disagree, I would not rely on a mechanical pump alone. I like to run a mechanical along with a good Aeromotive return style pump and regulator. The mechanical pump will get your engine started and allow you to idle through the no wake zones, If you use a good mechanical pump it will even get you through moderate speeds. Then switch on the electric when you are running hard. That's the way I do it.
As Rob said make sure your tank pick up is large enough to handle the flow you will need. I would say at least 1/2".... no smaller. Then all -10 lines to the regulator and at least -6 from the regulator to the carb.

mike tkach

iTrader: (3)

i ran the same pump as mild uses on my blown 540s making 950 along with a electric pump set to come on at 5 lbs.i had a lite on the dash that would lite up if the pump was running.i would test the pump by turning the key on without starting the engine so i knew it was working.even at wot and 6300 rpm the electric pump never came on because the mechanical pump never fell below 5 lbs.

MILD THUNDER

iTrader: (3)

Those six valve mechanical pumps will support 1000HP on gas, in a blown application. Mercury Marine didnt just slap them on the 800sc/900sc/1000sc and hope for the best. They did some testing

Unfortunately, they are becoming more and more rare these days. Barry Grant used to make one, holley, and some others. They are not comparable to the normal junk mechanical pumps holley sells these days, and move a whole lot more fuel than a stock sea pump style mechanical pump.

cheech

Mild Thunder and Mike Tkach. You guys give great experienced tech, are great assets to this site. Have boats that have whomp a$$ mills in them! Use the parts you recommend, but seems when you do some people squirm around and have bullcrap reasons or some half azz rigged solution instead of just listening. SMH
Please keep up the good work and keyboard education.