I've been interested in the idea of liquid-liquid oil coolers for a long time, but haven't been willing to pay the rather high prices for 'conventional' solutions. In recent years quite a few cars have started using oil/water exchangers, and I've bookmarked several that look like they have potential in both heat handling and adaptability.  This one looks like it might be as easy as any to adapt, and it includes a filter mount, to boot. It's used on vehicles with around 280 HP, so it might be able to handle a 13B/Renesis' heat load (with larger radiator, of course). Looks like it could mount to an adapter made from flat aluminum plate with the exception of one port.

Might have potential to eliminate a cooling duct, and get rid of the topside bump of the filter on the older Renesis blocks.

https://www.amazon.com/dp/B0BY82QT7J

Charlie

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