Oil Cooler on a Jet Boat?
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Oil Cooler on a Jet Boat?

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    "BOATLESS" blender over's Avatar
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    Default Oil Cooler on a Jet Boat?

    Who runs one and how far do you drive your boat on a single given ride-run? I was told they were not needed especially where I boat and how long its driven on each run, but after last week when my starter went out I could not believe how hot the oil was and how long it took to cool down before I could change the starter out. Any BR guys run oil coolers? Thanks guys.

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    Senior Member Pattymelt18's Avatar
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    You will do more damage with a cooler than without. You're motor never runs long enough or hard enough to benefit from one. And this is directed towards most at the river. That of course is assuming you have a good oiling system.

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    "BOATLESS" blender over's Avatar
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    Quote Originally Posted by Pattymelt18 View Post
    You will do more damage with a cooler than without. You're motor never runs long enough or hard enough to benefit from one. And this is directed towards most at the river. That of course is assuming you have a good oiling system.
    Damage? I have a decent enough oil pump, 80psi at idle, when It get's hot the lowest I've seen is 50psi @ idle, that's after going from the Wheeler to BR rv campground and back, 3500-6000 occasionally. I run Motul Oil

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    it certainly depends on how you drive your boat and how far. If I boated on Lake Elsinore 90% of the time I wouldn't run one, but running 14 miles from 3,800 - 4,200 rpms the cooler maintains the temp at under 220*. A few weeks back Farmer John rode with me for the day and we ran 12+ miles between 4,200-4,400 up river, oil temp didn't go over 225*.

    Typically running the boat between 3,800-4,000 the oil will get to 185-190* in a few miles, maybe 3-4 miles ( 10-11 qrts in the system). If you typically run to a cove or sand bar a couple miles from your launch location and sit on the sand bar all day. I wouldn't run one. You might want to consider putting a temp gauge on it just to see what type of temps you are seeing.

    Hope that helps.

    S CP
    Last edited by Sleeper CP; 08-16-2013 at 12:08 PM.

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    Quote Originally Posted by blender over View Post
    Damage? I have a decent enough oil pump, 80psi at idle, when It get's hot the lowest I've seen is 50psi @ idle, that's after going from the Wheeler to BR rv campground and back, 3500-6000 occasionally. I run Motul Oil
    One of the best oils you can buy. Good stuff.

    "damage" IE. never getting oil to temp to burn out moisture. if you are running it over 3,600 for any length of time you'll be generating some heat in it. Should install temp gauge or get a temp gun to read off the oil pan and see how hot.

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    "BOATLESS" blender over's Avatar
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    Quote Originally Posted by Sleeper CP View Post
    it certainly depends on how you drive your boat and how far. If I boated on Lake Elsinore 90% of the time I wouldn't run one, but running 14 miles from 3,800 - 4,400 rpms the cooler maintains the temp at under 220*. A few weeks back Farmer John rode with me for the day and we ran 12+ miles between 4,200-4,400 up river, oil temp didn't go over 225*.

    Typically running the boat between 3,800-4,000 the oil will get to 185-190* in a few miles, maybe 3-4 miles ( 10-11 qrts in the system). If you typically run to a cove or sand bar a couple miles from your launch location and sit on the sand bar all day. I wouldn't run one. You might want to consider putting a temp gauge on it just to see what type of temps you are seeing.

    Hope that helps.

    S CP
    I stay far away from Elsinore unless I need to test something for the river. I have a 10qt pan that I run 8qts in, was told to by my engine builder, he said any more oil that that it looses PSI. Where is the best spot to install a temp gauge? I run anywhere from 1-8 or so miles a trip.

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    Senior Member HBInHeat's Avatar
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    Can oil get hot from the ramp to ur beach and back?

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    Quote Originally Posted by blender over View Post
    I stay far away from Elsinore unless I need to test something for the river. I have a 10qt pan that I run 8qts in, was told to by my engine builder, he said any more oil that that it looses PSI. Where is the best spot to install a temp gauge? I run anywhere from 1-8 or so miles a trip.
    install sensor in the oil pan. If you don't have a place for it you can buy a sensor ( electrical) that goes in the drain plug hole. I've heard of people installing them in a remote oil filter port also, actually that's where we put the one on the Bonneville car now that I think about it.

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    "BOATLESS" blender over's Avatar
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    Quote Originally Posted by HBInHeat View Post
    Can oil get hot from the ramp to ur beach and back?
    Silly Mac Guy...Go put your boat back together.....

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    "BOATLESS" blender over's Avatar
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    Quote Originally Posted by Sleeper CP View Post
    install sensor in the oil pan. If you don't have a place for it you can buy a sensor ( electrical) that goes in the drain plug hole. I've heard of people installing them in a remote oil filter port also, actually that's where we put the one on the Bonneville car now that I think about it.
    Will a laser heat gun work good enough to get a proper oil temp reading off the pan?

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    Senior Member SBS933's Avatar
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    Quote Originally Posted by blender over View Post
    Will a laser heat gun work good enough to get a proper oil temp reading off the pan?
    I hope so, cause thats what I use. It also helps you to know when it's time to throw another bag of ice in the Brewski Cooler j/k
    Believe Nothing you hear and 1/2 of what you see.

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    Quote Originally Posted by blender over View Post
    Will a laser heat gun work good enough to get a proper oil temp reading off the pan?
    Yes

    "Dark Sarcasm"
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    fast is the other half.
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    Senior Member 67weiman's Avatar
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    I run one and need it even on a 4 mile run. Cooler keeps my temp hovering around 210-215...

    I also use water out of the motor going thru the cooler.
    Last edited by 67weiman; 08-16-2013 at 03:23 PM.

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    Senior Member Fireguy's Avatar
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    Quote Originally Posted by blender over View Post
    Who runs one and how far do you drive your boat on a single given ride-run? I was told they were not needed especially where I boat and how long its driven on each run, but after last week when my starter went out I could not believe how hot the oil was and how long it took to cool down before I could change the starter out. Any BR guys run oil coolers? Thanks guys.
    I have one and I stay at BR. I run mine anywhere from the RV park to the dam, or I even been to Lost Lake. I run one because of the turbos. I run the crap out of it in Parker too, been dam to dam multiple times last year. It spins 3500-5500 rpm with the occasional 6600 rpm jaunt. Im going to bring a temp gun with me today and see where its at.

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