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Old 04-04-2016, 11:56 PM
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thuglike thuglike is offline
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Join Date: May 2011
Location: Linden, NJ
Posts: 1,640

Sorry guys...been away a bit.

The cap itself does not (I am 99% sure but will double check with Jon) have a pressure relief spring in it. The tank has a hose barb just below the cap that acts like a pressure vent. It just blows off excess pressure. A hose attached straight down from the barb will keep the front of the motor clean as some coolant will, at times, leak. (not much). It's real nice if you run a non-pressure coolant, like Evans, there is no drilling the cap to vent excess pressure build up you get from time to time.
Again, I will double check this to verify.

Sorry for the delay.

Old 06-14-2016, 09:15 PM
psmike psmike is offline
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Join Date: Sep 2011
Location: Calif
Posts: 152

Any news on the OBS tanks ?

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