Just bought a Koyo rad it has two extra thin pipe outlets at the top one either side what are these for? I only have the one just under the filler cap on the one coming out.

could be a built in oil cooler, generally used for automatics

wouldn't an oil cooler be in the tank on the right though are they physically pipes or a raised thick washer type bit with threaded insert? if it's the 2nd thats for your cowl to fix to

no they are outlets for pipes to go onto either side at the top?

To connect a expansion bottle/overflow, or the Engine Coolant Tank?

Edited July 20, 201015 yr by Ant_300zx

There are three of them I will post a piccie later

these will be as mentioned for an oil cooler.Leave them disconnected.

cool as long as they dont piss water im ok with them lol.

Automatic transmission cooler connections

Automatic transmission cooler connections

 

which dont work as the last 20 odd years have shown and also increase water temps:wack: