upgrading gen 6 mechanical fuel pump
03-28-2008, 04:58 PM
#11
Yes, they are self regulated , sent you a PM.
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04-07-2008, 09:05 PM
#12
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Bill,
The Holley 12-454-11, 12-454-13 and 12-454-20 will all bolt up as will the Carters with the six screw flange (the Merc armature housing is a Carter unit)
Yes, I have used the -11 for a supply pump for the high pressure pump on supercharged EFI setups up to 1000hp. The -13 and -20 will require a regulator.
Dave
The Holley 12-454-11, 12-454-13 and 12-454-20 will all bolt up as will the Carters with the six screw flange (the Merc armature housing is a Carter unit)
Yes, I have used the -11 for a supply pump for the high pressure pump on supercharged EFI setups up to 1000hp. The -13 and -20 will require a regulator.
Dave
04-08-2008, 08:09 AM
#14
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I am using the KEPP pump. Nice unit. One thing nice thing - it doesn't leak fuel into the pump oil no where near as bad as stock. As far as fuel pressure - no idea, other than adequate.
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BillR
'00 Scarab Sport 302 CC
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'00 PQ 280
'98 Scarab 22
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'72 Checkmate
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04-08-2008, 08:29 AM
#15
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I am using the KEPP pump, and I am very happy with it. With their pump you do not need to run a pressure regulator.
I run about 7 to 8 lbs of pressure with a 1/2" fuel line.
I'd recommend using them.
I run about 7 to 8 lbs of pressure with a 1/2" fuel line.
I'd recommend using them.
04-08-2008, 07:37 PM
#16
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Try this link. CV Products billet fuel pump as a direct replacement for the Merc Sea Water Pump combo. To be on the safe and correct side of the psi issue, IMHO you should still run a regulator. Even with these elite units.
http://www.cvproducts.com/cv/catalog...el_Cooling.pdf
CV Products #CV2630
http://www.cvproducts.com/cv/catalog...el_Cooling.pdf
CV Products #CV2630
04-08-2008, 10:32 PM
#17
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The motors in my boat started life as Merc SC600's. They are 800's now, and use the merc pump stup with a electric pump feeding them. No problem with keeping good pressure.
Darrell.
Darrell.
04-09-2008, 10:39 AM
#18
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Merc used the same mech fuel pump on many motors from the early 454 carb motors up to and including the old SC900.
04-09-2008, 10:42 AM
#19
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Darrell, Damn-----a 28 sport cat with twin 800's. You have got to send us some video of that thing roosting some water.
04-09-2008, 11:21 AM
#20
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Try this link. CV Products billet fuel pump as a direct replacement for the Merc Sea Water Pump combo. To be on the safe and correct side of the psi issue, IMHO you should still run a regulator. Even with these elite units.
http://www.cvproducts.com/cv/catalog...el_Cooling.pdf
CV Products #CV2630
http://www.cvproducts.com/cv/catalog...el_Cooling.pdf
CV Products #CV2630
