Adding an Oil Cooler to a 20 HP V-Twin Briggs

[Pete591]

A couple of approaches:


Adopt the Kohler kit...

http://tewarehouse.com/24755120-S


use a harly oil cooler..

http://www.tejasthumpcycles.com/Parts/Oil_Coolers/Harley_Oil_Coolers.htm#Magnetic Oil Filter Cover

Maybe this?

http://www.jegs.com/i/Perma-Cool/771/10189/10002/-1

Any suggestions?

 

[Propflux01]

I would use the first kit shown, but if you do not have any kind of cooling airflow over it, what good would it really do?

 

[greenaccord02]

It's a lot of money to spend on that kind of an engine, but even if money is no object it will probably be of little help without airflow as Tim said.

 

[Brett Miller]

Why?

 

[lexus114]

Originally Posted By: Brett Miller
Why?


X2^^

 

[JTK]

Before Pete's done with his new Simplicty, he'll have an auxiliary 6 pack oil filter module installed, cooler system and 5gal aux. oil sump! Seriously Pete, it's a good and beneficial concept given the right conditions. I know of Kohler Command powered Cub Cadet owners who have installed the Kohler kit, but you change your oil once a week anyway.

Joel

 

[Pete591]

Originally Posted By: JTK
Before Pete's done with his new Simplicty, he'll have an auxiliary 6 pack oil filter module installed, cooler system and 5gal aux. oil sump! Seriously Pete, it's a good and beneficial concept given the right conditions. I know of Kohler Command powered Cub Cadet owners who have installed the Kohler kit, but you change your oil once a week anyway.

Joel


I know...

Still debating.
The simplest way to lower bearing temperature is using lower-viscosity oil. Thinking about a synthetic 5W-30 or 5W-20 if I get a cooler. Anybody ever use a 5W-20 in a mower?

http://machinedesign.com/article/here-is-how-to-keep-sleeve-bearings-cool-0421

When equipment relies on sleeve or journal bearings, the lower the operating temperature, the better. Cooler running extends oil life, reduces differential thermal expansion of the journal, and causes fewer alignment problems.

So taking steps to bring down the operating temperature is sometimes necessary and often desirable for oilfilm bearings. Engineers have a number of means at their disposal to cool bearings and reduce friction, resulting in lower temperatures.

I did find the perfect fan oil cooler however!

It's 4" X 6" and about 4" deep. It would be easy to install!

http://www.hrpworld.com/index.cfm?form_prod_id=781,776,587_6038&action=product

 

[JTK]

Pete I'm with you that it's important to dissipate the heat, but you still need to find the happy medium of that and film thickness. Especially in a small, hard working air cooled engine.

Joel

 

[XS650]

It's hard to go wrong with factory recommended SAE viscosity and 190F to 220F oil.

Something to keep in mind about the Machine Design article is that it's for industrial journal bearings which are usually designed to run at lower temperatures than automotive bearings.

The cooler you can run a journal bearing in a piece of industrial machinery, the better off you are as long as you use the right viscosity. In an internal combustion engine, you want sump temperatures of at least 190F to get rid of moisture and other combustion products in the oil.

 

[Brett Miller]

Put some Amsoil ASE in it and quit worrying....