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Oil Cooler By Pass

  • Thread starter Thread starter mriddle
  • Start date Start date
M

mriddle

Guest
Saw this on ebay .. how does it work ?

Does it have a thermostat in it or what ?

81_GS_1100_EX_c_274.jpg


81_GS_1100_EX_c_277.jpg
 
Yup, thermostat. Oil is routed though the cooler once a certain temp. is reached - not sure what the set point is.
 
The BP-180 thermostat opens at @ 180F. I believe it was designed to be non-servicable, not saying you couldn't open it up though. It was probably a press fit with a O-ring on that one side.
 
Makes all kinds of sense.

srsupertrap said:
The BP-180 thermostat opens at @ 180F. I believe it was designed to be non-servicable, not saying you couldn't open it up though. It was probably a press fit with a O-ring on that one side.
Click to expand...
 
So does this device also act as a check valve when no oil is flowing through it? I'm asking because I just bought a Lockhart oil cooler with this exact same thermostat in the lines, and was just curious.
 
Sort of, I imagine the design utilizes a bi-metalliac spring in the housing that pushes a slide port to let oil flow to the cooler above 180F. Below that temp the oil port is closed and merely routes your oil back to the oil pressure housing. So unlike a check valve the BP-180 won't hold the oil in the oil lines or oil cooler after you stop the engine. The oil will drain back to the lowest point.

The Lockhart thermostats are kinda rare but I did quick serach on FleaBay and found this item which may be of interest to someone with a oil cooler on their GS and would like to add a thermostat. Just hide it under the tank so no one sees it :p

http://cgi.ebay.com/ebaymotors/Harl...004QQitemZ140301543471QQrdZ1QQsspagenameZWDVW
 
srsupertrap said:
Sort of, I imagine the design utilizes a bi-metalliac spring in the housing that pushes a slide port to let oil flow to the cooler above 180F. Below that temp the oil port is closed and merely routes your oil back to the oil pressure housing. So unlike a check valve the BP-180 won't hold the oil in the oil lines or oil cooler after you stop the engine. The oil will drain back to the lowest point.

The Lockhart thermostats are kinda rare but I did quick serach on FleaBay and found this item which may be of interest to someone with a oil cooler on their GS and would like to add a thermostat. Just hide it under the tank so no one sees it :p

http://cgi.ebay.com/ebaymotors/Harl...004QQitemZ140301543471QQrdZ1QQsspagenameZWDVW
Click to expand...

Nothing a little shot of black paint wouldn't cure.
 
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