Quote:
Originally Posted by zeroomega
JR Oil cooler kit uses 10AN Aeroquip FC598-10 hose (for GR86, but I think their other kit use the same hose). It has 0.63in ID and 0.91 ID. The ID seems to be slightly larger than common 10AN hoses (which we saw a average 3psi pressure advantage at same temperature compared to colorfitting kit using regular 10AN hose). I change the hose to Goodridge G-Line XF 910 hose with 0.63in ID and 0.82in OD because I uses a different hose routing and it needs a slightly shorter hose to avoid rubbing.
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-10 should be fine. That's the minimum size we recommend. Below that and you'll see a pressure drop.
I'm still stuck on the pressure drop you're seeing at temp. Odder knowing you've got a cooler, if anything that should stabilize pressure. It would be interesting to compare pre-cooler install to post-cooler pressures