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Old January 14th, 2015, 10:36 AM   #58
ninjunk
Lostcause enthusiast
 
Name: Graham
Location: Austin, TX
Join Date: Jan 2015

Motorcycle(s): 2000 EX250F

Posts: 178
Quote:
Originally Posted by exploring/carolina View Post
Agree, a bypass on the cylinder head side of the thermostat to the waterpump intake would work. The size of the bypass ID hose/fittings would be important, did not keep any info on this unless it's in this thread.

The OEM thermostat information used in the original post, cracks @ 146F to 152F, found this info to change in a later service manual "supplement" to crack @ 177F to 182F with full open @ 203F.

I ride this Ninja weekly and it still warms up nicely within 5 to 10 minutes when the temps are 40F and have not had any issues with it when the temps are 90F and above.
Bringing this back from the dead but does the supplement say anything or give you any indication of when this might have happened or if there was a P/N change? The way the stock thermo housing works, it would be pretty easy to just tap a bypass fitting into it. It basically IS a thermobob itself.

Partzilla lists the same Kawi p/n thermo fitting 86-2007. Too bad moto OEM's didn't standardize thermostats the way auto mfg's do.
http://www.partzilla.com/parts/detai...9054-1058.html
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