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#18201 - 06/26/18 04:04 PM 1995 diesel Ram engine coolant "bypass?" nipples
fitterski Offline
MBN member
Registered: 10/17/11
Posts: 32
Loc: Quebec, Canada

My Cummins 12-valve is approaching rollout and I have a few loose ends to tidy up. One of these is a pair of maybe 1/4" coolant hose fittings the purpose of which I have no idea of (I never had the original host truck). One of them is screwed into the 1-3/4" coolant inlet fitting outside the thermostat and the other is screwed into the block looks like right over the thermostat. I suspect these might be a sort of bypass for the event of thermostat failure closed or maybe to help refill the head. Anyone have or had one of these trucks?

Thanks for any info, until I know more I plan to just plug them up.
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If DIY were a religion ..hmm, I just made it one.
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#18204 - 06/26/18 10:32 PM Re: 1995 diesel Ram engine coolant "bypass?" nipples [Re: fitterski]
tom Online   content
MBN Old hand
Registered: 02/14/10
Posts: 1743
Loc: kodiak alaska *****
if your computer is on the block it might be coolant lines for it
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#18208 - 06/29/18 03:31 PM Re: 1995 diesel Ram engine coolant "bypass?" nipples [Re: tom]
fitterski Offline
MBN member
Registered: 10/17/11
Posts: 32
Loc: Quebec, Canada

No computer on this engine. There is a coolant temperature sensor at the rear of the head though. Ok, thanks, I'll just leave them plugged.
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If DIY were a religion ..hmm, I just made it one.
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