RevMax 8 speed thermostat bypass

[crazykid1994]

I'm thinking being in FL this is smart and what I plan to do next oil change.

Any issues with CEL for computer not seeing optimal temps?

No issues whatsoever.

 

[lAWROSA]

Caulks bypass installed. Excellent product

 

[crazykid1994]

Had weather down in the upper 40s here (cold for south Florida…) and the trans would barely get to 100° and wouldn’t maintain anything over 100° unless I was driving on the highway. So decided to try something and parts have started to arrive. I will be installing a 145° inline thermostat. Need to get a proper caliper to measure the OD on the trans fluid lines. Seem to be 1/2” which is recommended to use -8an tube sleeves and nuts. Parts should be here sometime in February but the thermostat has already arrived. Comes with -10orb to -8an fittings. I will be flaring the hard line on the trans to connect to the thermostat directly to try to reduce any chances of leaking.

 

[Wild one]

Had weather down in the upper 40s here (cold for south Florida…) and the trans would barely get to 100° and wouldn’t maintain anything over 100° unless I was driving on the highway. So decided to try something and parts have started to arrive. I will be installing a 145° inline thermostat. Need to get a proper caliper to measure the OD on the trans fluid lines. Seem to be 1/2” which is recommended to use -8an tube sleeves and nuts. Parts should be here sometime in February but the thermostat has already arrived. Comes with -10orb to -8an fittings. I will be flaring the hard line on the trans to connect to the thermostat directly to try to reduce any chances of leaking.

I'd use a ferrule compression fitting on the cooler lines Kris,then make up short flexible lines to connect everything together.
These are overkill,but should never give you any issues with leaking.

316 SS Compression Fitting, 1/2 Inch Tube X 1/2 Inch NPT Male Connector

1/2" Tube X 1/2" MNPT Compression Fitting - 316 Stainless Steel Male Connector. Connects tubing to threaded pipe. NPT Threads- ASME B1.20.1, SAE AS71051.

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[crazykid1994]

I'd use a ferrule compression fitting on the cooler lines Kris,then make up short flexible lines to connect everything together.
These are overkill,but should never give you any issues with leaking.

316 SS Compression Fitting, 1/2 Inch Tube X 1/2 Inch NPT Male Connector

1/2" Tube X 1/2" MNPT Compression Fitting - 316 Stainless Steel Male Connector. Connects tubing to threaded pipe. NPT Threads- ASME B1.20.1, SAE AS71051.

shop.prmfiltration.com

As nice as those may be I’ll be flaring the lines for a hard connection instead of a compression fitting. May still end up using short sections of hose depending on where I finalize my decision to mount the thermostat.

 

[joesstripclub]

Had weather down in the upper 40s here (cold for south Florida…) and the trans would barely get to 100° and wouldn’t maintain anything over 100° unless I was driving on the highway. So decided to try something and parts have started to arrive. I will be installing a 145° inline thermostat. Need to get a proper caliper to measure the OD on the trans fluid lines. Seem to be 1/2” which is recommended to use -8an tube sleeves and nuts. Parts should be here sometime in February but the thermostat has already arrived. Comes with -10orb to -8an fittings. I will be flaring the hard line on the trans to connect to the thermostat directly to try to reduce any chances of leaking.

I forget do you have grill shudders deleted? Even at below freezing temps I still get close to 100 degrees on my less than 10 mile drive to work but i have full shudders.

 

[joesstripclub]

I did a decent test a couple weeks ago. Rented 4 powder sleds and took them up to Vail Pass. Basically ran the Ike Gauntlet on the way back if you are familiar with TFL's towing test. Was running about 65 up I70 toward the tunnel and looked down at temps, Oil was cooking at 265 but Trans held nicely in the 140s. Only in the mid-40s for ambient temps so it wasnt too crazy out, definitely slowed down a bit to keep the oil temps down though.

 

[crazykid1994]

No. Mine are deleted.

 

[BlownGP]

Had weather down in the upper 40s here (cold for south Florida…) and the trans would barely get to 100° and wouldn’t maintain anything over 100° unless I was driving on the highway. So decided to try something and parts have started to arrive. I will be installing a 145° inline thermostat. Need to get a proper caliper to measure the OD on the trans fluid lines. Seem to be 1/2” which is recommended to use -8an tube sleeves and nuts. Parts should be here sometime in February but the thermostat has already arrived. Comes with -10orb to -8an fittings. I will be flaring the hard line on the trans to connect to the thermostat directly to try to reduce any chances of leaking.

You have no heater at all right? You took it all off.

Are you worried your temps are too low?

 

[crazykid1994]

You have no heater at all right? You took it all off.

Are you worried your temps are too low?

Yes. No heater whatsoever. And yes. I’m worried that it’s to low when the temps drop. Hence the 145° thermostat. Says temps should regulate to about 150°. I was fine with the 135-140° temps during summer which is why I chose that temp thermostat. On cold days the trans shifting does feel slightly blocky until around 90° then it smooths out. But in stop and go traffic I can’t hold heat. Does anyone know the stock fitting size at the top of the thermostat housing assembly on the side of the trans? Trying to see if I can just pull the lines back to that point straight from the trans.

 

[turkeybird56]

Mustang guys.... They always crying about something.

Sent from my SM-G981W using Tapatalk

BRANDON, did U ever get the clutch lock switch developed for the 5th Gen 5.7's?

 

[Wild one]

BRANDON, did U ever get the clutch lock switch developed for the 5th Gen 5.7's?

He's been having a bit of trouble with the forum lately,so he might miss this,but you can track him down on his facebook page.

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Home | blackfoxindustries Ram 1500 Paddle Shifters | Blackfoxindustries 44-44 Tr

blackfoxindustries transfercase harness and paddle shifters

www.blackfoxindustries.net

 

[HEMIMANN]

Yes. No heater whatsoever. And yes. I’m worried that it’s to low when the temps drop. Hence the 145° thermostat. Says temps should regulate to about 150°. I was fine with the 135-140° temps during summer which is why I chose that temp thermostat. On cold days the trans shifting does feel slightly blocky until around 90° then it smooths out. But in stop and go traffic I can’t hold heat. Does anyone know the stock fitting size at the top of the thermostat housing assembly on the side of the trans? Trying to see if I can just pull the lines back to that point straight from the trans.

So? What happened before they started adding these stupid thermostats? Nothing. Transmission shifts stiffer in cold climates until the oil warms, then it's fine. Add a thermostat just warms it up faster, nothing more. Big deal.

But it is a big deal when it restricts oil flow in hot climates, or fails altogether!

 

[crazykid1994]

So? What happened before they started adding these stupid thermostats? Nothing. Transmission shifts stiffer in cold climates until the oil warms, then it's fine. Add a thermostat just warms it up faster, nothing more. Big deal.

But it is a big deal when it restricts oil flow in hot climates, or fails altogether!

This is not able to fail completely hence why I chose this one. If it fails it closes the bypass. There is no restriction on this thermostat. Take a look.
https://www.improvedracing.com/compact-high-flow-engine-transmission-oil-cooler-thermostat.html

 

[18GSMRam]

Had weather down in the upper 40s here (cold for south Florida…) and the trans would barely get to 100° and wouldn’t maintain anything over 100° unless I was driving on the highway. So decided to try something and parts have started to arrive. I will be installing a 145° inline thermostat. Need to get a proper caliper to measure the OD on the trans fluid lines. Seem to be 1/2” which is recommended to use -8an tube sleeves and nuts. Parts should be here sometime in February but the thermostat has already arrived. Comes with -10orb to -8an fittings. I will be flaring the hard line on the trans to connect to the thermostat directly to try to reduce any chances of leaking.

I wish I drove my truck more, been just as cold in Tampa area the last few days to see what mine does. I left the heater, used the block plate and the few times I drove (stop and go traffic, US19 in Pinellas is miserable) it when it was mid/high 50s last week I had no problems getting the trans temps into the 120s (if I remember correctly) but I also tend to drive that thing like a bat out of hell, too much fun not to :shrugs shoulders:

I'll pay more attention these next few weeks cause the temps are supposed to stay down "low" for awhile and I'll drive normal and see what they do. Maybe with the heater still attached it's enough heat to transfer when really cold to get temps up more than with it completely gone?

 

[18GSMRam]

To be more clear I Left the heater with blocking plate and did the bypass (complete revmax kit)

 

[BlownGP]

Yes. No heater whatsoever. And yes. I’m worried that it’s to low when the temps drop. Hence the 145° thermostat. Says temps should regulate to about 150°. I was fine with the 135-140° temps during summer which is why I chose that temp thermostat. On cold days the trans shifting does feel slightly blocky until around 90° then it smooths out. But in stop and go traffic I can’t hold heat. Does anyone know the stock fitting size at the top of the thermostat housing assembly on the side of the trans? Trying to see if I can just pull the lines back to that point straight from the trans.

I see having the heater even with the bypass does proivde some heat to the fluid.

It was 35* this morning and it got into the 130s are so after a 30 minute drive.

I still don't like how jerky the trans is it when it's in 4th or 5th. You let off the gas and coast for a little bit. Then get back on the gas. Definitely not smooth.

 

[BlownGP]

So? What happened before they started adding these stupid thermostats? Nothing. Transmission shifts stiffer in cold climates until the oil warms, then it's fine. Add a thermostat just warms it up faster, nothing more. Big deal.

But it is a big deal when it restricts oil flow in hot climates, or fails altogether!

It's a good point because my 09 ofcourse didn't have a heater. If I can remember, the trans still got into the 120s-140s on very cold days.

 

[TKC432]

So I read this entire thread and still need to ask this question It may sound stupid but for the life of me I’m stumped on this one So 2020 Ram 1500 Bog Horn 4x4 5.7 Hemi 72k miles With the tranny we are all discussing here Few weeks ago truck overheated and came to find the radiator bone dry !?!? So I added coolant and with the truck off I began to see leaking at the tranny heater …. In the same location as the typical failed rubber o-rings on the tranny oil in/out But I swear this is coolant otherwise why start leaking only when I add coolant? It gets weirder read on…. So I decided to bypass the heater temporarily and traced the two coolant lines to under the hood coming off the lower radiator hose … 2 nipples on a T inline on lower radiator hose Simple so I took them off and put a new lower hose on without the T So essentially there should be no coolant flowing down those lines to the tranny heater anymore right ? Well to my surprise as I was filling the radiator back up coolant came out of one of the two lines I’d cut under the hood … ????… so I just quickly took a couple nipples and hose clamps and looped the two lines together Easentially exactly what others have done here except under the hood rather than above the tranny heater :… so problem solved right ? But wait How the f*ck was coolant even getting into one of those lines anyway??? So I just kept filling the radiator pondering this conundrum and then started her up Ran for a few min before the original coolant leak at the bottom of the tranny heater started again !!!??? Can anyone here explain that ? Makes zero sense to me Only explanation is that I’ve mistaken tranny fluid for coolant …. But then where did all my coolant go to cause the overheating issue to start with ? PLEASE HELP I’m no newbie to wrenching on my own trucks But I’ve been a Ford man for the last 40 years and this is my first Ram And we all know the massive amount of issues with the 2019-2022 model years But this one has me dumbfounded

 

[joesstripclub]

@TKC432 The trans fluid starts out greenish colored but quickly turns a dirty brown color. I think the coolant is purple-ish but its been awhile since I had that one open. Can't help with your leak, but there is a heater with coolant and a cooler with trans fluid to the trans on these trucks.