ok i dont know if its stock but i got this car from an old lady...single owner owned it since 91 or 92. its pretty beat up but expletive it, im talking bout the engine now. there is an coolant passage that i've never seen before...its like a sandwich adaptor for running turbo applications but its actually a coolant passage around there and i guess it cools the oil but i dont know where the coolant hoses go...a schematic or picture of coolant lines in hondas would be a great help.

car is a 1990 crx hf...putting in a crx si.

 

Got some pictures of what you are talking about...

 

 

thats it..thanks.

 

They can also be called an oil warmer since its coolant dependant (hot coolant will warm up cool oil). They dont cool the oil that well, but i guess its better than not having one at all.

 

yeah i see what you mean...gets the car up to temp faster.