Posted July 31, 2002 - 02:21 AM
I CURRENTLY HAVE A YZ400F which is prone to over heating, so im looking for bigger capacity radiators (426f)
id be prepared to make brackets etc, also has anyone tried fiting a small oil cooler into the cooling circuit?
Posted July 31, 2002 - 03:32 PM
I am curious what kind of riding you do where you keep overheating??? Maybe something else wrong, such as lean jetting?? My '00WR400 has overheated only once. That was after a one mile hill in deep sand, nearly full throttle, almost no forward speed at about 100 degrees ambient temp. I noticed boiling after cresting the top and shut it down 'til it cooled. Nothing else has been able to overheat the beast.
Posted August 01, 2002 - 12:45 AM
the type of riding i do varies, although a lot of it is first gear stuff hoping over bogs, steep drops etc, real euro enduro sort of stuff.
i suspect i am running a bit lean, maybe i should up it a little on the pilot jet
Posted August 01, 2002 - 07:41 PM
If you do find you need more capacity, the oil cooler may be a good solution if you can work in into the circuit.
I have heard the CRF has some issues with overheating, so some of the guys who repair radiators will also extend the tanks. This does not add more cooling area, but it does extend the capacity so the coolant temp changes are not so abrupt. Seems to help the CRF. Good luck.
Are your 250F radiators larger?