still got bubbles

Gravel Scratcher · Post by **Gravel Scratcher** » January 29th, 2011, 9:49 pm

A while back i noticed my coolant had some bubbles and used a bit of coolant after a ride , no problem i thought as i replaced the oil / water seal at the water pump and head gasket while doing some maintenance. Next time out riding i noticed it was still happening. Pulled the head again, both the cylinder and head appear level. (checked with straight edge) What have i missed

seanmx57 · Post by **seanmx57** » January 30th, 2011, 10:28 am

are you sure that bubles are not normal. It's called cavitation.

Gravel Scratcher · Post by **Gravel Scratcher** » January 30th, 2011, 4:21 pm

yeah i understand the cavitation thing but i'm coming back home and the coolant level has dropped to around the top of the radiator core fins. maybe time to put a overflow bottle on it to be sure where its going

britincali · Post by **britincali** » January 30th, 2011, 4:35 pm

Without an overflow all CR5's will puke coolant untill it settles out a few mm's over the rad core, filling the rads is pointless as it'll just spit it out untill it barely covers the core.

With an overflow the rad will stay full to the cap.

pstoffers · Post by **pstoffers** » January 30th, 2011, 4:36 pm

Gravel Scratcher wrote:yeah i understand the cavitation thing but i'm coming back home and the coolant level has dropped to around the top of the radiator core fins. maybe time to put a overflow bottle on it to be sure where its going

It is normal for it to be right at the top of the core. I say your good to go.

Gravel Scratcher · Post by **Gravel Scratcher** » January 30th, 2011, 4:57 pm

Thanks guys, just overfilling by the look of it

Kuma · Post by **Kuma** » January 31st, 2011, 1:11 pm

britincali wrote:Without an overflow all CR5's will puke coolant untill it settles out a few mm's over the rad core, filling the rads is pointless as it'll just spit it out untill it barely covers the core.

With an overflow the rad will stay full to the cap.

Any suggestions on an overflow bottle, where to mount ect.?

britincali · Post by **britincali** » January 31st, 2011, 2:43 pm

A yamaha WR bottle fits real nice under the left side panel, thats what I have on my dune bike.

iggys-amsoil · Post by **iggys-amsoil** » January 31st, 2011, 4:01 pm

pstoffers wrote:
Gravel Scratcher wrote:yeah i understand the cavitation thing but i'm coming back home and the coolant level has dropped to around the top of the radiator core fins. maybe time to put a overflow bottle on it to be sure where its going
It is normal for it to be right at the top of the core. I say your good to go.

X2

BannedCR500Riders.com

still got bubbles

still got bubbles