Add Oil Cooler to Raptor SD - Kawasaki Fr691v

Jcook78 said:
I had thought about something similar before. But instead of that setup, using a sandwich plate with the same 3/4-16 thread and adding a small external cooler somewhere. My yard isn’t too big, but when I was cutting a couple properties, the thought had crossed my mind.
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Mr Cook, my engine is an FR651V, do you know if the same items will work on it? r
 
RayMcD said:
Mr Cook, my engine is an FR651V, do you know if the same items will work on it? r
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The thread size for the filter on the FR651V is the same 3/4-16 size, so it should work the same. Depending on where the sandwich plate aligns when it’s tight on the block, the location of the fittings going to the cooler could come into play. Most of the 1/2” npt fittings are fairly short, and some -6 3/8” push-lock hose is about $3/ft. I’ve had good luck with the push-lock hoses, but have built countless braided line hoses.

edit. This one is quite a bit cheaper at $41.
 

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I have thought about adding an oil cooler. For me, I can’t see much of a benefit. A little longer filter can add oil capacity and help a little. Keep your engine clean. Use a leaf blower and thoroughly blow your machine and engine off after each use. In this heat wave, it’s best to take frequent breaks and use a heavier weight oil.
 
I’ve thought about a larger capacity filter too. I always let the engine idle a while in the shade or make a couple slow idle laps around the yard to help cool the engine and oil off before shutting it down.
 
Jcook78 said:
I’ve thought about a larger capacity filter too. I always let the engine idle a while in the shade or make a couple slow idle laps around the yard to help cool the engine and oil off before shutting it down.
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That is the wrong thing to do. An air cooled engine is cooled by air flowing across the engine. The more air flow, the better the cooling. Run at wide open until shutdown or parking. If you want to sit in the shade for a bit, shut it down.
 
I give it a minute or so to allow the temperature to stabilize a bit, letting some of the heat disperse across the engine. I’ve never been a fan of working something hard and just shutting it down immediately, mainly from my days of working on diesels with turbos that like to cook the oil in the turbo bearings.
 
Jcook78 said:
I give it a minute or so to allow the temperature to stabilize a bit, letting some of the heat disperse across the engine. I’ve never been a fan of working something hard and just shutting it down immediately, mainly from my days of working on diesels with turbos that like to cook the oil in the turbo bearings.
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Most diesels are water cooled. There is a difference.
 
MParr said:
Most diesels are water cooled. There is a difference.
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And it takes time for the water passing through the oil cooler to lower the oil temps as well as for the egt’s to drop. Carry on as you wish. There’s more than one way to skin a cat.
 
Yes a better cooler would be the more standard separate small radiator setup. I did not see a lot of room and decided the plate style would be an improvement over nothing at all. Has anyone measured oil temperature? These do run hot but they are designed that way.

Plastic fender is not going to rub a hole in a steel oil filter??
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