Cam driven water pumps and engine temp?
11-19-2003 | 11:15 AM
#21
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From: pitman nj
I know in my case (a Formula 272 with big blocks) replacing the Merc impeller was a REAL MOFO if you get my drift
After a lot of question asking and research I went with this set up and it works. Best part I can kneel on the back seat , lean over the backrest and change the impeller in 15 minutes. It's almost the same a BB Volvo and theirs works
After a lot of question asking and research I went with this set up and it works. Best part I can kneel on the back seat , lean over the backrest and change the impeller in 15 minutes. It's almost the same a BB Volvo and theirs works
11-19-2003 | 01:02 PM
#23
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From: pitman nj
Duh, Well....I'm back in work again. Have to wait till morning again for pix
. In a nut shell , it's the same place Merc put it. Right above the alternator on the right side by #1 cylinder. Film at 11
. In a nut shell , it's the same place Merc put it. Right above the alternator on the right side by #1 cylinder. Film at 11
11-19-2003 | 01:11 PM
#24
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From: pitman nj
Pat,
That's why I finally went with this setup. I had talked to C Spray who has twin Volvos in his Formula. I had my doubts since the flow rating is just over 1/2 of the Merc belt driven pump. With a circulating pump I have around 9 lbs water pressure at anything over an idle. I've also heard anything past 2000 rpms the blades on the impeller just lay back , acting more like a blender and don't do much because the water is being forced in by your forward motion.
That's why I finally went with this setup. I had talked to C Spray who has twin Volvos in his Formula. I had my doubts since the flow rating is just over 1/2 of the Merc belt driven pump. With a circulating pump I have around 9 lbs water pressure at anything over an idle. I've also heard anything past 2000 rpms the blades on the impeller just lay back , acting more like a blender and don't do much because the water is being forced in by your forward motion.
11-20-2003 | 05:09 AM
#25
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Charter Member #655
Joined: Dec 2000
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From: Holland, Michigan
I like it!!! the old Merc set up sucks!!!now if you can figure out how to mount the starter in the front !!!
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If your boat has a sail do you ride a horse to the ramp?
If your boat has a sail do you ride a horse to the ramp?
11-20-2003 | 08:45 AM
#28
Thread Starter
Charter Member #655
Joined: Dec 2000
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From: Holland, Michigan
Sure has!!thats a big a$$ cooler.....If I have a couple extra $100 when I build my 496's there on!!what impeller do they use?
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If your boat has a sail do you ride a horse to the ramp?
If your boat has a sail do you ride a horse to the ramp?
11-20-2003 | 10:31 AM
#29
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From: pitman nj
My coolers are for a Merc HP500 and when you get your pump or pumps , why not get a spare or two.
I didn't and was able to match something up at Boat US. After that I ordered a few just to have them
I didn't and was able to match something up at Boat US. After that I ordered a few just to have them
Last edited by mopower; 11-20-2003 at 10:46 AM.
11-20-2003 | 01:59 PM
#30
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From: pitman nj
Sut,
Yeah, I did pick it myself.
The magenta color on the intakes and t-stat housing is powdercoat that matches some of my upholstery and graphics. Also had the aluminum valve covers clear powdercoated so I'm not polishing all the time
. The rest is just Merc Phantom Black.
Yeah, I did pick it myself.
The magenta color on the intakes and t-stat housing is powdercoat that matches some of my upholstery and graphics. Also had the aluminum valve covers clear powdercoated so I'm not polishing all the time
. The rest is just Merc Phantom Black.
