Radiator Coolant tank mod

nickta · **Posted:** Sat Jan 11, 2014 8:33 am

Hi.

Had a look at the Documents for the 906 and 907, and found the modification to the Coolant tank. Ordered the filler neck from the Honda dealer, but the Radiator cap comes in 2 different pressures. Choices are 1.1 Bar, or 0.9 Bar. They have an after market cap in 0.9, but not the 1.1. Any thoughts on which size would be best? Haven't had a look in the 907 Maintenance manual (not home), but guess either would be OK?

The other question with this mod, it says "cut a slit from the I.D. to just beyond the cap’s inner relief valve". I gather this bit gets the inside of the tank to Atmospheric pressure, but is it obvious how far the slit goes? Anyone done this mod and have a picture?

Cheers.

Nick.

paso750 · **Posted:** Sat Jan 11, 2014 2:44 pm

Nick,

I obviously wouldn`t know as I have a P750 but in case you`d use Evans waterless coolant (anyone tried ?) there would be no pressure in the system at all.
http://www.evanscooling.com/

G.

Mc tool · **Posted:** Sat Jan 11, 2014 9:15 pm

The cap on my 906 has been knackeded sinse I have had it and it runs zero pressure and has always worked fine . The cap is only there to keep the coolant in when I get airborne

nnnnnnorman · **Posted:** Mon Jan 13, 2014 5:48 pm

gotta watch out for those humpback bridges hammish :cool:

romus · **Posted:** Fri Jan 17, 2014 11:49 am

Mc tool · **Posted:** Fri Jan 17, 2014 9:34 pm

Radiator Coolant tank mod

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