12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

Coolant bypass

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  #11  
Old 10-23-2014, 03:23 PM
4x4manonbroke's Avatar
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Originally Posted by 94 12valve
The bypass relieves excessive pressure being built up, so you would want to use a pressure valve not another thermostat valve.

If you are worried about it on a hot street truck personally I would pull your current thermostat and drill three 1/8" holes in it.
This is what I do to most of the T-stats .. just for safty and helps to burp system also
 
  #12  
Old 10-26-2014, 01:23 PM
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Originally Posted by 4x4manonbroke
This is what I do to most of the T-stats .. just for safty and helps to burp system also
That's the same thing guys do to stop the massive temperature drop when the tstat opens isn't it because mine will get to 190 and drop off to about 150 to 160 and then stay steady at about 180
 

Last edited by JustAnother_cummins_guy; 10-26-2014 at 01:26 PM.
  #13  
Old 10-28-2014, 07:52 PM
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Originally Posted by JustAnother_cummins_guy
That's the same thing guys do to stop the massive temperature drop when the tstat opens isn't it because mine will get to 190 and drop off to about 150 to 160 and then stay steady at about 180
Mine will still go to 200* then drop to 130 .. first time .. then levels off after that .. typically stays in the 180-190* area when driving Freeway ( 1750 RPM'S ) ..
 
  #14  
Old 10-29-2014, 12:48 AM
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IMO Austin (justanother_cummins_guy) just needs to do it and get it over with!
Call me with any issues buddy /(name stealer)
 
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