Coolant Leak! Won't stop! - 600RR.net
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post #1 of 6 (permalink) Old 12-08-2010, 01:57 PM Thread Starter
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Coolant Leak! Won't stop!

I found I had a leak at my thermostat and replaced the seal and o ring, was fine for a week but then sure enough it started leaking again. Now what? How do I stop a leak when the parts I put on to stop it in the first place are new? Anyone ever had a leak there that just won't stop?

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post #2 of 6 (permalink) Old 12-08-2010, 04:22 PM
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Where is it leaking? Where it mate to the block?


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post #3 of 6 (permalink) Old 12-09-2010, 08:16 AM
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Pull it back off and make sure that both surfaces are clean, then take a straight edge and ensure that they are flat.

If they aren't flat either get the thermostat housing machined or replace it then use a thicker gasket and some liquid gasket on both sides of your paper one, torque it down and once it is set and the bike is warm torque it down again.
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post #4 of 6 (permalink) Old 12-09-2010, 05:17 PM Thread Starter
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I took it apart and did just that cleaned again and torqued heated then torqued again, seems to not be leaking again. It was fine for a week last time. If it happens again Ill look into getting a new thermo.

It was leaking where it mates to the block, found another hose that was seeping also while I was in there so I cut it back a little and re clamped it down. Hopefully it's all cured now.
Thanks for the input.

05 CBR600rr
goodridge stainless braided f/b brake lines
HH double sintered EBC racing brake pads
vortex clip ons
Gilles tool black rearsets, carbon heel rests
vortex frame sliders
EBC Race up sprocket kit
Power commander III
SBK Leo Vince Slip on carbon
K&N air filter
EBC Kevlar race clutch kit
and many other nic naks
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post #5 of 6 (permalink) Old 12-09-2010, 05:38 PM
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Did you use a liquid gasket/RTV/Hondabond?
If you didn't you should have...a light film on both metal surfaces.

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Unfortunately bikes fall over. It's in their nature.
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post #6 of 6 (permalink) Old 12-11-2010, 05:18 PM Thread Starter
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didnt use honda bond or anything, also didnt notice film, what is it from, why is it there?
Bike it out of commish right now due to neighbor backing into it for second time, posted in crash forum

05 CBR600rr
goodridge stainless braided f/b brake lines
HH double sintered EBC racing brake pads
vortex clip ons
Gilles tool black rearsets, carbon heel rests
vortex frame sliders
EBC Race up sprocket kit
Power commander III
SBK Leo Vince Slip on carbon
K&N air filter
EBC Kevlar race clutch kit
and many other nic naks
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