I have had a bit of a search on here, but can't find any info regarding the stock oil cooler on the HSG.
A few years ago, the stock oil cooler (i.e. the sandwich-plate style one) failed internally and allowed oil into the cooling system. I was unable to remove it as the thickness of the cooler meant I couldn't put anything else in its place at the time. It was resolved by capping off the coolant feeds, and then simply attaching a short piece of hose from the coolant inlet to the outlet of the cooler.
I have had no issue with the cooler being out of commission, and even after a 20-min track session, the temperature didn't go over 135C and 30 secs into the cool down lap, the temp was down to 110C.
I am revisiting its complete deletion, and now wonder if it's possible to use a centre-post from an Evo 1-3, or probably many other '90s Mitsubishis.
Has anybody had any experience of this?