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Discussion Starter · #1 ·
we run a remote oil cooler and filter on our road race car .
when removing the oem cooler should we block the water feed at the pump or do we need to feed the water back into the head .

blocking at the pump is tidier and eliminates another posssible area of failure but we thought the water feed to the head may be important to cool a localised hot spot ?

any thoughts ?
 

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maybe try just rerouting it back into its self,
 

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I would leave the oem oil cooler. Keep in mind that the engine coolant gets up to temp way faster than the oil. So the oem *cooler* also acts as an oil *warmer* during startup to help get the oil up to proper temp.

If you really want to remove the cooler, then get a k20a3 (base rsx/ep3) water pump. It doesn't have the fitting for the oil cooler.

Or you can just go from the water pump directly to the return fitting on the back of the block, so that you bypass the oem cooler.

The return on the head is already a coolant passage. So blocking it off at the head will not impact anything.
 

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Anyone trying to plug or delete their oil cooler passage here’s the part number 11108-PTO-003. Thread it all the way until you see no more threads. Your welcome :)
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