I installed this kit in my 07 great product in theory and good quality. My experience was that rear plug was extremely difficult to access/remove with engine in the truck. The plug did NOT rotate, rather went frighteningly evenly into the engine even with a fine piont pick on the extreem edge. My only saving grace was #6 water jacket stopped it from falling in. Oh and the "heat exchanger" is actually referred to as a torque converter cooler wonder if it was intended to stop trans from melting down under the extreemest of conditions. Regardless the cooler has been known to fail subsequently, mixing coolant into transmission instantly destroying it. I feel the Fleece is the only coolant bypass worth buying despite hell to install but recommend closely monitoring trans temp when towing.
thanks for that, been looking/reading everywhere on someone who has actually installed with motor/trans in the truck. I crawled under, looked for 5seconds and said nope!
Coolant flow is from the water pump through the block & head. Then out through the thermostat when its warm enough (or has enough pressure) to the radiator before returning to the water pump
@@thelaststarfighter I just did this job with the tranny and engine in place a few minutes ago! I will upload a video soon on the process. I built my own bypass system and used a rear block off plate pre-tapped for 1/2 npt pipe.
Generous on the 4 difficultly rating. I'd 7 is more appropriate. Laying across an engine, doing the majority of work under/between a firewall is not easy. That is arguably the most difficult spot to reach on an installed engine.
"Remove anything thats in your way to get to that freeze plug"... yup, thats called the gd truck. I cant even get a line of site to that let alone work up there
@@thoroughbreddiesel its all good some times we need to correct one another so that we can learn from each other, thank you for making a good quality video explaining how the by pass works and why you need it.
In the first part of the video, the tech say coolant is delivered to the rear of engine through the bypass. Correct me if I'm wrong, but doesn't the water pump push into the front of the engine, and thermostat is between outlet and radiator?
hard to remove the rear freeze plug??? hell i just revved my engine up and that fucker made a dent into my fire wall... shit was super easy. now im buying this...
Great video and thanks for sharing this replacement kit for the OEM transmission torque converter Oil cooler. I"m considering doing this on an 07, 48RE trans with the 5.9 cummins. Someone else asked about the transmission lines that go into the stock cooler. What happens to those lines when the Fleech Coolant Bypass Kit is installed...? And would there be any issues with more northerly / colder climates up in central Ontario, Canada...?
I'd say get the manual transmission one then buy a good aftermarket water to oil cooler & replace the stock transmission exchanger. Then run whatever you need to with new appropriate lines to make it work. Also I hope you know that the transmission needs to be in neutral to pump fluid & warm up.
IF I were to try this with the engine in I'd jack the cab up first; either that or increase my fire insurance. Is there no gasket between coolant riser and block?
I know this old but some of us are just owning a cummins so I just wanted to ask that is there any procedures to do after getting rid of the heat, exchanger because I live in northern Pennsylvania and it is fairly cold alot of the year so I just wanted to know what I should do differently during the cold months.. and if I need to let it run a bit longer or if I need to start off being easy on the transmission or etc...? Thank you :)
Pretty sure high boost can't pushout freeze plugs unless maybe your head gasket is leaking. Usually from turning higher rpms causing water pump to make more pressure.
HorsepowerTube higher boost= higher cylinder temps, which causes more heat transfer to coolant. The issue is that cylinders 5 and 6 receive less than adequate coolant flow causing pressure spikes around those cylinders which can push freeze plugs. Water pumps don’t create pressure only flow
So, I paid a shop to install this on my 2015. The line everyone says to "tighten before installation" is leaking at the fitting. I have ordered a 1" crowfoot socket. Has anyone ever tried to tighten this line IN the truck?
hi cool video, but I have a question: I have a 6.7 2015 dually HD with an AS69RC, I don't have a heat exchanger, and I still have my entire EGR system in place, is this a problem with EGR in place? Thank you
Is there a reason you cant just run a line from feed line to return of where the heat exchanger use to be and run a external cooler on the transmission?
Now when I have to replace the rear thermostat, how difficult will it be to reach back there with an allen wrench and do everything blind? you'd have to go from the top of the head and reach down while laying across it.
Good question. You will be working blind but it is possible to get the cover off to replace the tstat. If you have a trans down for any reasone maybe a good time to replace the tstat then as well. We have yet to hear of a tstat failure in the field on these.
@@thoroughbreddiesel Taking the trans out for a clutch, but wanted to make sure im not shooting myself in the foot when the need arises to replace it, Worst case scenario im thinking remove drive shafts and cross member and support it to tip it back if you can't get the clearance from the top or side. Do you know the Tstat manufacturer?
but if someone was installing this kit and eliminating their heat exchanger do they just get an adapter to connect the two transmission lines because my exchanger is bad so i am going to take it off as to not leak trans fluid and i want to install the bypass kit but i havent been able to find anyone offering a coupler to just connect the two trans lines together or a kit with a new trans line to just eliminate the ones that connect to the exchanger..?
I would never put a thermostat in the back of block unless it’s a fail safe that when it goes bad it breaks open and your not stuck on the side of road !!!
hey wade, just ordered my fleece coolant bypass for my 07 5.9 from you guys along with my new airdog 4g G&R sump fleece fuel filter delete and oil cooler, so when i install the coolant bypass and remove the transmission heat exchanger what would i do with the transmission lines? do they include something to connect the transmission fluid lines so i can delete the exchanger completely.
Great question/s. I'm in the same situation and would like to knowas well... not hearing back from anyone in over 5+ yrs, doesn't instill a whole lot of confidence.
Anybody know the torque specs on the rear housing?! Lol it’s not in the instructions. I mean I will send it home with a 1/2 475 torque impact but I’d rather check first.
Now I heard that guys recommend putting rtv sealant, or some type of silcone on that back plate with the o-ring too, would you recommend that just in case a o-ring fails.
Just installed the bypass while the head was off. Made the job a little easier. *warning* If you live in a warm climate like Northern California be prepared for much higher transmission temperatures in stop and go traffic or heavy towing at low speeds. Trans fluid coming off the converter in these situations is much higher than your coolant temperatures. When you eliminate the heat exchanger you loose cooling capacity. My truck had survived 280k miles without this product in the same conditions. Head gasket blew when my employee drove too long after the water pump went out. This product is definitely oversold and if you live in a warm climate you might have to drop another $1000 on a good frame mounted transmission cooler.
I have a question, since the part has a second thermostat, what happens if that thermostat goes bad, gets stuck closed. Is the thermostat easy available.
If you have a thermostat go bad and need to replace, this is a Cummins 180* thermostat which is easily replaceable. If that therm goes bad, then it’s basically the same as not having the bypass kit installed.
I believe the cummins factory thermostat is designed to fail open not shut and some other better brand ones but if you go with an autozone one it's gonna fail shut
When the freeze plug is taken out is the block really ruff? I'm concerned about the o ring tearing on a ruff edge. I know they supply a cleaning pad but that hole was never designed for an O ring.
We haven't really had any issues with it. It does require GOOD cleaning though. Good rule of thumb, if the cleaning pad is in good shape when you're done.... then you probably didn't clean it well enough.
My friends truck just blew the heat exchanger and it fucked the trans and cross cuntaminated into the engine block. Dodge sucks ball juice for making this type of system. Its a 6000$ repair bill. Get this bypass in immediately before this happens to your truck
I do not like that rear setup for a real thermostat... Thermostats fail I need to be replaced that would be a PITA to replace. Hellllllll no 🤣. If it was just a free flow I might think about it.
You guys plan on doin a vid on the cummins 5.9 common rail fleece fuel bowl delete?
th-cam.com/video/mCGZ8HB5wJA/w-d-xo.html
Thoroughbred Diesel need to see it on a 3rd gen but im guessing its very similar to this
Yes, very similar and the concept is the same.
i lover how fleece instructions say two hours.
this is easily six. especially motor i the truck, with compounds
I installed this kit in my 07 great product in theory and good quality. My experience was that rear plug was extremely difficult to access/remove with engine in the truck. The plug did NOT rotate, rather went frighteningly evenly into the engine even with a fine piont pick on the extreem edge. My only saving grace was #6 water jacket stopped it from falling in. Oh and the "heat exchanger" is actually referred to as a torque converter cooler wonder if it was intended to stop trans from melting down under the extreemest of conditions. Regardless the cooler has been known to fail subsequently, mixing coolant into transmission instantly destroying it. I feel the Fleece is the only coolant bypass worth buying despite hell to install but recommend closely monitoring trans temp when towing.
pvcarmon1 how did you get your freeze plug out mine won't rotate.?
thanks for that, been looking/reading everywhere on someone who has actually installed with motor/trans in the truck. I crawled under, looked for 5seconds and said nope!
@@QuickStyleMotorsports lmaoo same
@@DEADRISING72HR uh oh. What did ya end up doing?
Coolant flow is from the water pump through the block & head. Then out through the thermostat when its warm enough (or has enough pressure) to the radiator before returning to the water pump
You are CORRECT.
I saw that, HUGE MISTAKE.
SO, does this guy know anything???
Exactly what I was thinking.
I cant even imagine trying to pull this installation off sitting in your driveway...
That's a nice exhaust manifold
Only the best for Dirty Diana.
th-cam.com/play/PLnxFEGfR52dg6KLoz55Zc0X-hGOP08KZF.html
Sure would like to see you do all that on a 3rd with engine in.
i couldn't imagine trying to get at that plug with it in the truck and the trans not off.. He's using a hammer like there is no fire wall there lol
@@thelaststarfighter I just did this job with the tranny and engine in place a few minutes ago! I will upload a video soon on the process. I built my own bypass system and used a rear block off plate pre-tapped for 1/2 npt pipe.
@@thelaststarfighter agreed
hunt2eat did you ever upload your video of the coolant bypass install?
@@Erklzanderz Wheres the installation vid lol. was it too hard?
@@Erklzanderz - Did you ever post the video???
Generous on the 4 difficultly rating. I'd 7 is more appropriate. Laying across an engine, doing the majority of work under/between a firewall is not easy. That is arguably the most difficult spot to reach on an installed engine.
"Remove anything thats in your way to get to that freeze plug"... yup, thats called the gd truck. I cant even get a line of site to that let alone work up there
Yeah it’s a 4 if it’s a nice clean engine on a stand and components already removed. Lol
can u make a video for a transmission cooler because u deleted the heat exchanger
It took me 2 hours but i got the freeze plug out. What i mean is the job took me 2 hours
What is the benefit of this system
By the way I love the back of his shirt "saving diesel lives" haha thats awesome 👌
Would be better if it said "diesel lives matter"
coolant flows the opposite direction that you said in the video.
coolant will flow out of the back of the block and into the upper rad hose.
You are correct, I don’t know what I was thinking there.
@@thoroughbreddiesel its all good some times we need to correct one another so that we can learn from each other, thank you for making a good quality video explaining how the by pass works and why you need it.
You used rapid tap to lubricate your o ring?
Pretty good stuff.
Ummm ya.... add 2 hours of time JUST for the freeze plug, if your engine is in the truck. And a plus 5 difficulty rating 😆 This guy, I swear.
I just did this and got the freeze plug out with a long pry bar with a few swings of a hammer in less than 30 seconds
In the first part of the video, the tech say coolant is delivered to the rear of engine through the bypass. Correct me if I'm wrong, but doesn't the water pump push into the front of the engine, and thermostat is between outlet and radiator?
You are correct!
I saw the same huge mistake.
Does this guy know anything???
@@nellyfarnsworth7381 He sells Parts! He's not a Mechanic! lol😂
And also, what happens when the rear thermostat fails?
hard to remove the rear freeze plug??? hell i just revved my engine up and that fucker made a dent into my fire wall... shit was super easy. now im buying this...
Lmao
😂
I was going to order this kit, but after looking at my truck I’ve deemed this impossible.
Great video and thanks for sharing this replacement kit for the OEM transmission torque converter Oil cooler. I"m considering doing this on an 07, 48RE trans with the 5.9 cummins. Someone else asked about the transmission lines that go into the stock cooler. What happens to those lines when the Fleech Coolant Bypass Kit is installed...? And would there be any issues with more northerly / colder climates up in central Ontario, Canada...?
I'd say get the manual transmission one then buy a good aftermarket water to oil cooler & replace the stock transmission exchanger. Then run whatever you need to with new appropriate lines to make it work.
Also I hope you know that the transmission needs to be in neutral to pump fluid & warm up.
Fleece gives u a 180 degree thermostats for the back. Do u keep the Cummins 190 degree thermostat in the front or swap it to a 180 as well ?
IF I were to try this with the engine in I'd jack the cab up first; either that or increase my fire insurance. Is there no gasket between coolant riser and block?
Tell me more about that car in the background.
Where can I find a replacement steel coolant tube from the heat exchanger (left bottom) to the block?
Is a 6.7 L Cummins coolant bypass kit the same as a 5.9 L common rail coolant bypass kit ??
There are differences. We have them year make and model specific.
Does fleece send something to replace transmission line's with this kit
Not with the coolant bypass kit.
I know this old but some of us are just owning a cummins so I just wanted to ask that is there any procedures to do after getting rid of the heat, exchanger because I live in northern Pennsylvania and it is fairly cold alot of the year so I just wanted to know what I should do differently during the cold months.. and if I need to let it run a bit longer or if I need to start off being easy on the transmission or etc...? Thank you :)
Pretty sure high boost can't pushout freeze plugs unless maybe your head gasket is leaking. Usually from turning higher rpms causing water pump to make more pressure.
HorsepowerTube higher boost= higher cylinder temps, which causes more heat transfer to coolant. The issue is that cylinders 5 and 6 receive less than adequate coolant flow causing pressure spikes around those cylinders which can push freeze plugs. Water pumps don’t create pressure only flow
Uh well technically speaking no pump creates pressure.
Correct at high rpm your water pump can over pressure the system causing freeze plug issues. That is why alot of people "clip" their water pumps
My 97 12 valve gets very hot when I'm pulling heavy equipment would this help
So how the transission fuid will warm up.
Canadian!? Rapid tap.
At the risk of sounding stupid, why do you need a second thermostat? If one is closed wouldn't your engine heat up?
Any reason NOT to use the steel braided version?
We offer a replacement tstat for the rear, and it's personal choice if you use the steel of fabric hoses.
Do they make that for a 5.9l gas
What turbo manifold is that?
So, I paid a shop to install this on my 2015.
The line everyone says to "tighten before installation" is leaking at the fitting.
I have ordered a 1" crowfoot socket.
Has anyone ever tried to tighten this line IN the truck?
will this kit work on a 1st gen?
Di they make a by pass for the 12v. I have a 96 that I want to get rid of the trans cooler.
Idove to see this done with the engine in the truck ,lol.
Is this available for the 6.7 Cummins engine?
Yes, they are available for the 2007.5-2018 trucks.
hi cool video, but I have a question: I have a 6.7 2015 dually HD with an AS69RC, I don't have a heat exchanger, and I still have my entire EGR system in place, is this a problem with EGR in place? Thank you
A new part number is coming for the bypass that works with EGR. Should be released sometime first of 2022. Give us a call at 866-737--4966 for ETA.
@@thoroughbreddiesel Hi.
Thanks ,
Ok. 😉👍
Is there a reason you cant just run a line from feed line to return of where the heat exchanger use to be and run a external cooler on the transmission?
No but I believe the return line crosses over behind the block right where the bypass bolts on
what color / brand blue engine paint is that?
It's actually a Ford Blue DE-601.
@@thoroughbreddiesel thanks!
Now when I have to replace the rear thermostat, how difficult will it be to reach back there with an allen wrench and do everything blind? you'd have to go from the top of the head and reach down while laying across it.
Good question. You will be working blind but it is possible to get the cover off to replace the tstat. If you have a trans down for any reasone maybe a good time to replace the tstat then as well. We have yet to hear of a tstat failure in the field on these.
@@thoroughbreddiesel Taking the trans out for a clutch, but wanted to make sure im not shooting myself in the foot when the need arises to replace it, Worst case scenario im thinking remove drive shafts and cross member and support it to tip it back if you can't get the clearance from the top or side. Do you know the Tstat manufacturer?
@@mylesswann530how was your install of this kit? I'm thinking of getting it while I swap to a NV5600
but if someone was installing this kit and eliminating their heat exchanger do they just get an adapter to connect the two transmission lines because my exchanger is bad so i am going to take it off as to not leak trans fluid and i want to install the bypass kit but i havent been able to find anyone offering a coupler to just connect the two trans lines together or a kit with a new trans line to just eliminate the ones that connect to the exchanger..?
Because that would be an absolutely atrocious idea to delete that.
I would never put a thermostat in the back of block unless it’s a fail safe that when it goes bad it breaks open and your not stuck on the side of road !!!
I installed a new head gasket head studs. And the cooliant by pass for some reason I’m leaking cooliant where my turbo and exhaust manifold meet???
Jimmy Bennett that’s not good...
Cracked your head?
Where can I get that stainless steel hardware kit for the exhaust manifold ? I have an 04 3500 with 5.9 Cummins
You abso-fkn-lutely do not want stainless bolts holding your manifold on. They'll stretch
Where can I order just the heat exchanger bypass kit ?
We do not offer just the heat exchanger bypass kit. Although that could be accomplished with some plugs and the manual shift heater core line.
hey wade, just ordered my fleece coolant bypass for my 07 5.9 from you guys along with my new airdog 4g G&R sump fleece fuel filter delete and oil cooler, so when i install the coolant bypass and remove the transmission heat exchanger what would i do with the transmission lines? do they include something to connect the transmission fluid lines so i can delete the exchanger completely.
Great question/s. I'm in the same situation and would like to knowas well... not hearing back from anyone in over 5+ yrs, doesn't instill a whole lot of confidence.
Anybody know the torque specs on the rear housing?! Lol it’s not in the instructions. I mean I will send it home with a 1/2 475 torque impact but I’d rather check first.
Now I heard that guys recommend putting rtv sealant, or some type of silcone on that back plate with the o-ring too, would you recommend that just in case a o-ring fails.
No, you do not want to add RTV sealant to any sealing surfaces that have an o-ring.
Thoroughbred Diesel what about around it , like the base of the unit.
No, never use RTV where an Oring creates the seal.
I put a thin coat of oil on the O ring.
Hey, So with the Bypass Kit will it cool transmission better and will it take longer to warm transmission up?
We saw no adverse effects doing away with the heat exchanger at all.
Just installed the bypass while the head was off. Made the job a little easier.
*warning*
If you live in a warm climate like Northern California be prepared for much higher transmission temperatures in stop and go traffic or heavy towing at low speeds. Trans fluid coming off the converter in these situations is much higher than your coolant temperatures. When you eliminate the heat exchanger you loose cooling capacity. My truck had survived 280k miles without this product in the same conditions. Head gasket blew when my employee drove too long after the water pump went out. This product is definitely oversold and if you live in a warm climate you might have to drop another $1000 on a good frame mounted transmission cooler.
I have a question, since the part has a second thermostat, what happens if that thermostat goes bad, gets stuck closed. Is the thermostat easy available.
If you have a thermostat go bad and need to replace, this is a Cummins 180* thermostat which is easily replaceable. If that therm goes bad, then it’s basically the same as not having the bypass kit installed.
Thoroughbred Diesel this is a good thing than because if I'm not mistaken, cummins thermostat get stuck open when going bad, if I'm right
Usually, they fail closed. We have seen the failures both ways but closed is the norm.
I believe the cummins factory thermostat is designed to fail open not shut and some other better brand ones but if you go with an autozone one it's gonna fail shut
@@mikethorntonr1 You are correct, which is the prime argument for using a real Cummins thermostat.
This would be easier with motor completely off the truck. No way I’d install one without the motor off
What is that block plate behind the cp3 for?
It is a block off plate for a location that a cam driven lift pump would mount for any applicable 5.9 engines.
Thoroughbred Diesel is there any necessity for that pump if you're running a fass?
No sir, it would have been used on the 12 valve early models for example.
When the freeze plug is taken out is the block really ruff? I'm concerned about the o ring tearing on a ruff edge. I know they supply a cleaning pad but that hole was never designed for an O ring.
We haven't really had any issues with it. It does require GOOD cleaning though. Good rule of thumb, if the cleaning pad is in good shape when you're done.... then you probably didn't clean it well enough.
My friends truck just blew the heat exchanger and it fucked the trans and cross cuntaminated into the engine block. Dodge sucks ball juice for making this type of system. Its a 6000$ repair bill. Get this bypass in immediately before this happens to your truck
No lock tight tisk tisk
Looks like to much hassle,I can build my own
Buy a ram with a Cummins engine, talk to Thoroughbred Diesel then upgrade everything on your engine and transmission.
I cheated when I changed out my clutch out I did it then !!
I do not like that rear setup for a real thermostat... Thermostats fail I need to be replaced that would be a PITA to replace. Hellllllll no 🤣. If it was just a free flow I might think about it.
BS. A far cry from 2 hours and level 4. Every bit of 6-8 on time and difficulty. Not to mention the multiple incorrect statements in this video.
Why is he using a 4 foot bar to get the freeze plug out. Lol
Try to simulate how you would need to do the install with the engine in the truck.
Ok that make sense.
Is there a difference auto or manual trans.
Yes. There are different part numbers for manual and automatic.