Has anyone fitted the forester oil cooler? - Page 4 - Toyota GT 86 Forums UK
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post #31 of 31 (permalink) Old 12th September 2020, 19:38
Kaviar's Avatar
Join Date: Oct 2016
Posts: 465
The port sizes are as follows.

~8mm for both the ports on the throttle body.
~10mm for the smaller port on the heat exchanger.
~13mm for the larger port on the heat exchanger.

Were as you can stretch an 8mm I.D. hose up to 10mm. It's not possible with such a big jump for the larger 13mm (1/2") port.

Option A. You could split the difference and maybe use a 10mm hose and hope it clamps well enough on the smaller port.
Or option B. Use a reducing fitting or hose.

I managed to find a really nice, 90 degree 12mm to 8mm silicone reducer this week that should do the job. I also picked up another that's 8mm at both ends to help with the angles.

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