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Mark IV 502 oil cooler and water hose

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Old 04-23-2016, 10:22 PM
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Default Mark IV 502 oil cooler and water hose

I'm looking for a Mark IV 502 Oil Cooler and the water hoses, especially the hose from the cooler to the thermostat housing. The cooler is a 3" x 19" cooler, the exit hose is on top of the cooler unlike an HP cooler, where both hoses connect to the bottom of the cooler.

I'm also looking for the hose that connects from the cooler to the thermostat housing.
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Old 04-23-2016, 10:36 PM
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Look on eBay right now. Looks a little smaller but claims for a 502. 100.00. It's at lest the same Style your looking for but might be a little smaller. Don't have measurements but looks like 2+ X 18 or so
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Old 04-23-2016, 10:40 PM
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I'll check it out. I have that hp 500 coming. I may just run that one until I find what i need to match the other engine. That's the nice thing with a rear cooler, it's easy to change coolers if needed.
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Old 04-24-2016, 07:57 AM
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You will need the bigger cooler.
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Old 04-24-2016, 08:10 AM
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Thanks- I see Mr. Cool has the cooler, the tough part is that upper hose- nobody makes it anymore. I think my only option is going to be, splice two hoses so I can get the right angles.
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Old 04-24-2016, 11:17 AM
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I would think that you could go to a boat bone yard and get one. They don't exactly go bad.
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Old 04-24-2016, 12:31 PM
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Originally Posted by Tinkerer
You will need the bigger cooler.
Mike just left shop and we were curious if you had oil temp gauges when you ran those engines. Btw way he's getting them all pimped out. Lol.
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Old 04-24-2016, 06:37 PM
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No I did not have oil temp gauges but after a couple minutes of full throttle the oil pressure would drop about 10 PSI So my guess is the oil was getting hot. The same engine in the Daytona ( that did have an oil temp gauge ) showed the oil getting hot 250*.
Define pimped out. Paint or chrome???
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Old 04-24-2016, 11:16 PM
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I just made some small changes.
Painted the intakes Merc blue
Installed new valve covers (525 EFI's)
Keith Eickert Thermostatic oil filter heads, with AN-12 fittings.
Wilson Manifold carb spacers (matched perfectly with your blending)

I'll most likely run AN lines for the fuel, thats about it.
New oil coolers
There isn't much else to do. Internally you already have them set!
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Old 04-25-2016, 08:19 AM
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I have 2 2 1/8 x 21 coolers with brackets 100 shipped
Ron 504-616-6005
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