Engine Oil Cooler Size
#1
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Engine Oil Cooler Size
I'm running a 500hp in a 25'. I'm replacing the original mercury engine cooler due to damage with an after market cooler. I'm taking off a smaller cooler approx. 2" dia x 16" length compared to a 3" dia x 12" length, will it allow my engine to run to cool?
Is anyone running a heavy duty engine cooler on a single engine 500hp and having any problems with achieving enough oil temp to keep the moisture burnt off the oil?
Is anyone running a heavy duty engine cooler on a single engine 500hp and having any problems with achieving enough oil temp to keep the moisture burnt off the oil?
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You will need a Thermostat, I use the KE oil filter/t-stat combo, the Permacool will work. Do a search here on Permacool & they have a good reputation. If you haven't bought a oil cooler yet ,check out Revolution marine. They have a nice cooler at a reasonable $
John
John
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I am also going to a 3" X 12" cooler from a 2" X 12" on my 502 Mag. The 2" cooler was just not doing the job. I would see oil temps above 230* whenever I would cruise above 3500 rpm. I am also going to use a Perma-Cool T-stat. I had it on the 2" as well. I am not convinced that the P-C t-stat is all that effective, though. It still flows a lot of oil to the cooler when it is cold. I know Waterfoul has a 3" cooler without a T-stat on a 454 and his oil still gets up to temp. I think you will be OK with or without a T-stat. There is a lot more plumbing involved if you use a stat. I should have mine all rigged and ready to go by the end of this weekend. I will take some pics and post them when I am done. The engine is on a stand so it is easier to get to the cooler and lines. Next to impossible when in the boat.
#6
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The Perma-Cool bypasses until 190 degrees, then opens up.
OSO member, Nordic Heat, clued me in on an Oil T-Stat called a "Mocal". You can custom order a desired temp range. He uses a 210 degree unit. 190 degrees is not warm enough to burn off any cummulated condensation.
I thought my Perma-Cool was working until the motor was torn down and there were signs of condensation contamination.
It is definitely a combination of cooler size and plumbing setup (crossover, bypass, no bypass, water recirc pump, T-Stat, no T-Stat, etc.) that will give you the desired or undesireable effect.
OSO member, Nordic Heat, clued me in on an Oil T-Stat called a "Mocal". You can custom order a desired temp range. He uses a 210 degree unit. 190 degrees is not warm enough to burn off any cummulated condensation.
I thought my Perma-Cool was working until the motor was torn down and there were signs of condensation contamination.
It is definitely a combination of cooler size and plumbing setup (crossover, bypass, no bypass, water recirc pump, T-Stat, no T-Stat, etc.) that will give you the desired or undesireable effect.
Last edited by RLW; 03-13-2004 at 04:16 PM.
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I also recently replaced my stock oil and tranny coolers with new larger coolers. I used Canton oil thermostats from Eddie Marine, they are designed to open at 210*F.
I'm making mounting brackets for them which I'll get powder coated this week and mount them next weekend.
I'm making mounting brackets for them which I'll get powder coated this week and mount them next weekend.
#9
I have a used K/E unit sitting on the shelf. It's not perfect. It would need some fittings. I don't need it I would let it go for $200 if anybody is intrested e-mail me [email protected]. Doug
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I'm doing a similar upsizing in coolers do to oil over heat problems. I am going to start with no thermostat. If I don't get enough oil temp I plumbed it so I can switch the flow direction of the oil through the cooler to lessen the cooling effect. Hope this works, but if not, I mounted the coolers so I can get to them and add t stat if necessary. I run closed cooling, so I think it may be fine the way I just set it up. Should know in a few weeks
BT
BT