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Thermostat

Posted

12v owners. I installed a Stant 13479 thermostat over the weekend. NO more wild 50* temp. swings from the old thermostat. Just nice mild 5-10* swing on open and closed. Got the idea from ghostman over on the other forum. Very very happy with the results. Truck actually made temp. on my way to work this morning in the 37* cold. It would have been barely off the 140* mark with the old tstat.

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  • ofelas
    ofelas

    Never did find a warmer than 180f stat for my 12v first gen, so I swapped in a second gen stat housing and use the appropriate stat.   Here ya go -   1st gen 12v - 180f 54mm diamet

  • pepsi71ocean
    pepsi71ocean

    I currently use a Dodge 200F out of a 6.7L on my 99, and she runs 197-203 with a peak open of 208

  • Dodgeih
    Dodgeih

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  • Author

That it is. :thumb1:

  • Owner
3 hours ago, jlbayes said:

That it is. :thumb1:

 

I'm also assuming you're using the rubber o-ring from the stock style thermostat on the new one right?

Edited by Mopar1973Man

i went through 3 t-stats before i broke down and got a cummins one, has 2 stants and one gates i think it was. i really like the cummins one. now only have roughly 5 degree temp swing, then after a while it stays right at 188. for a 190 stat.

i've not had good luck with those.

  • Author
15 hours ago, Mopar1973Man said:

 

I'm also assuming you're using the rubber o-ring from the stock style thermostat on the new one right?

 

Yessir. Drops right in place of the original.

 

15 hours ago, Killer223 said:

i went through 3 t-stats before i broke down and got a cummins one, has 2 stants and one gates i think it was. i really like the cummins one. now only have roughly 5 degree temp swing, then after a while it stays right at 188. for a 190 stat.

i've not had good luck with those.

 

This is for a 12v. They do not use the same thermostat the 24v uses.

yeah my bad, i really should learn to read what section i'm clicking into. sorry bout that.

  • Owner
5 hours ago, Killer223 said:

yeah my bad, i really should learn to read what section i'm clicking into. sorry bout that.

 

Same here... 12V are known for that wild up / down swing of temps and also being cold blooded.

  • Author

Is no problem. I just wanted to clarify for any others that came in looking. :thumb1:

 

I only use the Cummins tstat in my 24v.

  • 2 weeks later...
On 12/6/2017 at 9:20 AM, jlbayes said:

Is no problem. I just wanted to clarify for any others that came in looking. :thumb1:

 

I only use the Cummins tstat in my 24v.

 

I currently use a Dodge 200F out of a 6.7L on my 99, and she runs 197-203 with a peak open of 208

    • Like 2

    I need to try one of those thermostats in my 12v, the huge temp swings are really annoying.

    On 12/15/2017 at 4:12 PM, pepsi71ocean said:

     

    I currently use a Dodge 200F out of a 6.7L on my 99, and she runs 197-203 with a peak open of 208

    Is this a thing? That would be great.. I would love to run 200-210, and not 190-200. Does it warm up the same? What about maintaining temp when cold out and idling? 

    Local Napa employee says that Napa thermostats are Motorrad brand

     

     

     

    If it locks open you gotta replace it. I dont think its a good design. A gimmick to sell you a new thermostat when it locks open

     

    Edited by GSP7

    They have non fail safe and fail safe

    On 12/17/2017 at 10:59 AM, Dodgeih said:

    Is this a thing? That would be great.. I would love to run 200-210, and not 190-200. Does it warm up the same? What about maintaining temp when cold out and idling? 

     

    Totally, You can ask @Mopar1973Man, I've been testing this for a few years now. It holds steady and will roast you out at operating temp. The T-stat cycles on the Scan Gauge between 197-203, and first open is usually 207-210. But as for a mileage difference I've not noticed much mainly because I'm constantly tuning on the Smarty. 

    2 hours ago, pepsi71ocean said:

     

    Totally, You can ask @Mopar1973Man, I've been testing this for a few years now. It holds steady and will roast you out at operating temp. The T-stat cycles on the Scan Gauge between 197-203, and first open is usually 207-210. But as for a mileage difference I've not noticed much mainly because I'm constantly tuning on the Smarty. 

    Do you happen to have a part number?  Local dealer can't figure out anything without a part number or last 8 of the vin! ? I want this now! 

    • Author
    19 hours ago, Dodgeih said:

    Do you happen to have a part number?  Local dealer can't figure out anything without a part number or last 8 of the vin! ? I want this now! 

     

    68067109AA, may have gone to 68067109AB now.

    Necessary to jump up to the 18psi cap at the same time? 

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    Welcome To Mopar1973Man.Com LLC

    We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.