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Top End Oil Cooler


Spirit

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The feed comes from the oil line on the upper case, behind the cylinder block/ barrel assembly  - this single line branches into a dual line to the back of the cam cover. A head cooler takes the oil from the upper case feed to an additional cooler and then a line with a dual branch returns the oil to the rear of the cam cover - the oil will  be lower in temperature when it circulates around the top of the head, so will keep the head temperature down.

This diagram shows it really well - it's the one fitted to the GSXR750RK

https://images.cmsnl.com/img/partslists/suzuki-gsxr750r-1989-k-e01-e02-e04-e22-sub-oil-cooler_bigsue0067fig-17_fbc2.gif

 

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52 minutes ago, R1guy said:

Could the head cooler be mounted directly infront of the main oil cooler? Or would this be considered to restrict flow to main cooler too much?!

5a132375a5247_ScreenShot2017-11-20at19_41_50.png.998b342d51f3747e14539e24809b5f06.png.e29ab8300b2927d0e5a8cd231d2987f1.pngYes. Yoshimura thought so. Note the head cooler is the larger forward mounted  cooler.

But on your Katana, if you don't mount the second cooler where the headlight used to be, you are a gayer.

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