Removing Rb25 Oil Cooler/warmer

[mxkal]

I wanting to remove the water to oil cooler on my rb25 to free up some space and use a air to oil cooler and oil filter re-locater kit. I heard i can use the RB20 oil filter boss which apparently doesnt have the cooler on it? If i remove the cooler do i still need to supply the rear of the block with water from the front of the block? (the return from the oil cooler).

[mxkal]

nobody has an rb20 they can have a quick glance at?

[T04GTR]

rb20 and all n/a rb twin cams dont use it. simply unbolt and bolt up. but you must use a z418 oil filter. or any that has a relief valve in it..

best to use is r33gts-4 rb25n/a as it angled forward abit.