Mishimoto bypass valve - 6 speed trans

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jcash414

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I bought the mishimoto trans bypass valve for my 6 speed.
I guess I am a little confused by the bypass that is included.

I live in Indiana, sometimes in the winter the temps get 10 or so below but not often..

From what I am reading, I do need to install this valve - correct?
 

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jcash414

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Ive been running a 6 speed in -40 weather for 5 years. lol... 10 isnt cold... :dogpile:

Good oil like Redline, deep pan and a tune to bump the line pressure is also a good idea ;):favorites13:
Thanks..... but this didn't really answer my question lol
 

Wild one

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I bought the mishimoto trans bypass valve for my 6 speed.
I guess I am a little confused by the bypass that is included.

I live in Indiana, sometimes in the winter the temps get 10 or so below but not often..

From what I am reading, I do need to install this valve - correct?
That replaces the thermostat assembly.Look through your grill for an aluminium block a couple inches square in the upper passenger side of the rad with 4 hard lines running to it,that'll be your thermostat block that you replace with that bypass. Give us some better pics of the new block,as somebody on here was doing the same mod,but they had the wrong bypass,you need the bypass that has 4 threaded holes
 

Burla

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Return that isht and get a anti valve, that one has a thermostat? That is the problem with the oem. Get a full flow anti valve like ats or similar, if that one indeed has a thermostat in it. And btw you brought up temp, so you can figure some guys will bring it up. If by chance it is very cold you can either use a warmer on the trans pan or leave it in neutral at idle, this was fluid rotates without wind hitting the oil cooler. Look up c+ trans fluid, replaces atf 4 with better cold characteristics.
 

Burla

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Look at cold flow properties c+.

lines 2 and 5 in this chart as opposed to line one atf. Machinelube... By nature pao/esters will give you great cold performance, matches pour points stats.

7044a_base-oil-types-temperature-range_extra_large.jpg
 

Burla

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Is this is true

  • Direct-fit for 2013-2018 Dodge Ram 6.7L Cummins
  • Installs in less than 1 hour
  • Durable CNC-machined billet aluminum design
  • Increased flow over stock bypass valve
  • Included 160F thermostat opens earlier than stock for improved cooling
  • Includes fully serviceable thermostat for fast warm-up in cold climates and thermostat bypass for constant cooling in hot climates
  • Machined cooling fins for added heat dissipation
  • Durable anodized finish
  • Mishimoto Lifetime Warranty
That is the entire reason ram forum takes that garbage off their truck, that thermostat has a lifespan, when it fails or gets clogged, your rfe is done. The popular ones are anti valves, they replace the valve with full flow at all times. no valves that can fail, peace good luck


compared to this the correct one, you see your transmission is listed.




.
 

Burla

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So I see that thermostat is removable? At a minimum I would remove it completely, but I'd also look and make sure the those lanes are wide open where the thermo was. Ideally, I'd just buy the full flow. I'm pretty sure you can get the correct male or female parts if needed.
 

Burla

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I think I am over my maximum posts for this thread, but it does appear that brand does have the correct bypass, here. It is the same for the 66 and 65 rfe's. Notice the one you bought omits the term fail proof like the one I posted, that is because yours is not fail proof.
 

U&A

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Get that Thermostat off and replace with what Mike Suggested. Full flow. That thing is only on there for EPA fuel milage reasons. You will see a 30-40 degree drop in temps with a full flow block.

Another option to keep it warm in the winter.

Cardboard over the grill. Part of it or all. I do it when it is in the teens or colder.
 

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Cardboard works, of course that means you use the proper bypass valve first. Another delete is shutters if you have them, both shutters and oem thermo management are not fail proof.
 

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Cardboard works, of course that means you use the proper bypass valve first. Another delete is shutters if you have them, both shutters and oem thermo management are not fail proof.

Yeah, I meant to say cardboard to cover the grill after the bypass delete
 

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When my house is 50f, I'm freezing. No cal made me soft.
Yah but you get over 100 to much

F that

I still dont have heat in my truck (3rd winter lol) and ill take negative’s over 100+
 
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jcash414

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Get that Thermostat off and replace with what Mike Suggested. Full flow. That thing is only on there for EPA fuel milage reasons. You will see a 30-40 degree drop in temps with a full flow block.

Another option to keep it warm in the winter.

Cardboard over the grill. Part of it or all. I do it when it is in the teens or colder.
Whos mike?
 
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jcash414

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I installed the pictured valve that I posted.. only 15 degrees lower temp so far. I also replace the bypass as it shows. I totally forgot I made this thread. Should I have done that
 

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jcash414

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Is this is true

  • Direct-fit for 2013-2018 Dodge Ram 6.7L Cummins
  • Installs in less than 1 hour
  • Durable CNC-machined billet aluminum design
  • Increased flow over stock bypass valve
  • Included 160F thermostat opens earlier than stock for improved cooling
  • Includes fully serviceable thermostat for fast warm-up in cold climates and thermostat bypass for constant cooling in hot climates
  • Machined cooling fins for added heat dissipation
  • Durable anodized finish
  • Mishimoto Lifetime Warranty
That is the entire reason ram forum takes that garbage off their truck, that thermostat has a lifespan, when it fails or gets clogged, your rfe is done. The popular ones are anti valves, they replace the valve with full flow at all times. no valves that can fail, peace good luck


compared to this the correct one, you see your transmission is listed.




.
I'm not sure how this would work. I have 4 threaded fittings on mine. This appears 2 of them would work
 
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jcash414

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I think I am over my maximum posts for this thread, but it does appear that brand does have the correct bypass, here. It is the same for the 66 and 65 rfe's. Notice the one you bought omits the term fail proof like the one I posted, that is because yours is not fail proof.
I dont think that will work. I had one similar to that before this one. It was for a Cummins aswell. Had 2 threaded fittings and 2 non. I had to send it back. It was revmax brand
 
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