I used to make up my own brackets for this. I have been using these Kaon brackets for some years. I highly recommend these brackets and oil coolers for the autos. Especially if you do a lot of sand or any 4wding. Good for towing heavy loads and the like. Keeps the auto from over heating. I run the barbs down to the bottom so you can have the hoses down to the bottom. Very neat way of doing it and the hoses are out of the way. Tire them off along the front cross member.
The top line is line in from the transmission correct? That would defeat the purpose of the cooler as it goes back warm. It would be more efficient to go from the bottom line that return the fluid back to the transmission. Then it gets cooled further in the transmission cooler. That is what the hayden instructions show for the FJ. I know the Prado and Fj share a bunch of the same stuff.
I installed mine and ended up following the video mostly. The instructions recommend that the hoses attach to the cooler from the bottom. I was unable to find anywhere to route the hoses safely, so I mounted the cooler as shown in the video The instructions request that the detached hose get replaced but I found the supplied hose too short for the routing I took (both hoses are 1.4 metre), so I just used a 3/8" copper tubing (4-5cm long) I had lying around as a connector and left the original Toyota hose in place. I would recommend the connector pipe be double flared so the hoses don't work their was loose, maybe just get a barbed connector. If I'd mounted with the orientation as per the instructions I may have been comfortable with the length of the hoses. By leaving the original hose in place, it gives me an option to bypass the radiator ATF cooler or the Davies Craig cooler should either fail in the middle of nowhere and parts are days away. Also take care not to have sharp bends or have stress on the radiator connector (think about driving on corrugations). I made a gentle loop into the radiator. Keep in mind that these radiators are plastic and become brittle over time. That's my 2 cents worth
Wouldn't this be better if the bracket was a single piece so the cooler doesn't take the body flex and fatigue over corrugations etc? Also I thought stainless steel and alloy cause corrosion?
Correct and correct. The process is called electrolysis and in the presence of salty water it will cause galvanic corrosion. Isolating the 2 materials may minimize the issue i.e. a coat of paint paint (preferably the brackets) or isolating washers.
I'M CONFUSED.. SO ONE LINE FROM THE TRANS COOLER GOES TO THE TOP OF THE RADIATOR, AND THE OTHER GOES TO THE TRANS? WOULDN'T THAT MIX COOLANT AND TRANS FLUID?
There are two lines from the transmission going to the oil to water cooler for transmission, the lower one is the one that goes to the transmission. You have to make that go to your auxiliary oil cooler and from there back to the transmission.
This is one important step he didn't explain. But i can tell you the transmission hoses has inlet and outlet. the top hose is inlet, bottom one outlet. Here what you need to do you only need to take the bottom hose off, connect it to the one side of the cooler. The other side of the cooler to the bottom socket of the radiator. that make the transmission oil goes from the transmission to the radiator, than to cooler and last is back to the transmission again . hope that helps.
@Jason Saggers not it you use a large enough cooler and you are not in cold climate region. another reason it goes to main radiator is to get the fluids (coolant and ATF) up to operating temperature quicker. i am doing a cooler install and will be bypassing the radiator, i live in tropical climatic region.
No correct. Need to use the bottom connection. I dont know why kaon keeps refering to this video when their instal instructions that come with the cooler contradict it.
Im seeing my trans temp at least 20-30C lower overall after installing this... Must be good for it... Couple of tips, the new hoses are tought to put on the nipples, use a grease on the nipples before sliding the hose on... Also the hoses have a clip down beside the radiatior, and the original hose has a thicker tube around it. Take the tube off the original hose and put it on the new hose so it fits nicely in the clamp.
The auxiliary cooler is added after the radiator as per all instructions from various cooler manufacturer. I did my Hayden 679 the similar way. Do you recommend a thermostat for warming up the fluid for vehicles in tropical regions?
@@tex959 thanks I agree with you, I am just being extra cautious and also find out why the manufacturer wants the transmission to run hot all the way up to 100c and above. The Hayden 679 is just a cooler with no internal thermostat. I live in a tropical country where there is no chance of winter or snow so I guess overcooling is something I don't have to worry about.
Beware - These brackets no longer fit right with the Davies Craig 678/698. Davies Craig has added 2 more plates which has increased the size of the coolers by 16mm. Wasted a lot of time 😞.
I used to make up my own brackets for this. I have been using these Kaon brackets for some years. I highly recommend these brackets and oil coolers for the autos. Especially if you do a lot of sand or any 4wding. Good for towing heavy loads and the like. Keeps the auto from over heating. I run the barbs down to the bottom so you can have the hoses down to the bottom. Very neat way of doing it and the hoses are out of the way. Tire them off along the front cross member.
Great video, easy to follow, I have just bought your bracket kit and the DC cooler and will be fitting today.
The top line is line in from the transmission correct? That would defeat the purpose of the cooler as it goes back warm. It would be more efficient to go from the bottom line that return the fluid back to the transmission. Then it gets cooled further in the transmission cooler. That is what the hayden instructions show for the FJ. I know the Prado and Fj share a bunch of the same stuff.
Looks like the oil cooler is sitting at the same spot ad DC DC charger… what would be my option for dc dc charger?!
Outstandind!
Is it ok to just run the cooler you fitted and bypass the radiator cooler? Just to remove the possibility of cross contamination?
YES. Just had cross contamination and had to have my gearbox rebuilt. The shop told me to fit what we see in the video and ignore the water cooler
I installed mine and ended up following the video mostly. The instructions recommend that the hoses attach to the cooler from the bottom. I was unable to find anywhere to route the hoses safely, so I mounted the cooler as shown in the video
The instructions request that the detached hose get replaced but I found the supplied hose too short for the routing I took (both hoses are 1.4 metre), so I just used a 3/8" copper tubing (4-5cm long) I had lying around as a connector and left the original Toyota hose in place. I would recommend the connector pipe be double flared so the hoses don't work their was loose, maybe just get a barbed connector.
If I'd mounted with the orientation as per the instructions I may have been comfortable with the length of the hoses.
By leaving the original hose in place, it gives me an option to bypass the radiator ATF cooler or the Davies Craig cooler should either fail in the middle of nowhere and parts are days away.
Also take care not to have sharp bends or have stress on the radiator connector (think about driving on corrugations). I made a gentle loop into the radiator. Keep in mind that these radiators are plastic and become brittle over time.
That's my 2 cents worth
Does this cooler bracket interfere with the redarc BCDC bracket
Great question. Any response?
Just wondering you have the cooler with the connections facing up ive bee told they should be at the bottom any advice on that
Wouldn't this be better if the bracket was a single piece so the cooler doesn't take the body flex and fatigue over corrugations etc?
Also I thought stainless steel and alloy cause corrosion?
Correct and correct. The process is called electrolysis and in the presence of salty water it will cause galvanic corrosion. Isolating the 2 materials may minimize the issue i.e. a coat of paint paint (preferably the brackets) or isolating washers.
When you installed oil cooler did you remove the already installed oil cooler by manafuacturer? ?
Hi, iam have a kzj78 landcruiser (1kz-te engine 3.0 cc) what is the recommended size for the Atf cooler, thanks
I'M CONFUSED.. SO ONE LINE FROM THE TRANS COOLER GOES TO THE TOP OF THE RADIATOR, AND THE OTHER GOES TO THE TRANS? WOULDN'T THAT MIX COOLANT AND TRANS FLUID?
There are two lines from the transmission going to the oil to water cooler for transmission, the lower one is the one that goes to the transmission. You have to make that go to your auxiliary oil cooler and from there back to the transmission.
The transmission fluid does not mix with antifreeze because the radiator has a separate tank inside of it for the transmission fluid.
His instructions are rubbish -
A question, what happens if you install 2 coolers instead of 1????
What's the before and after temperatures
So, is it a transmission cooler or an oil cooler?
ATF cooler (automatic transmission fluid cooler), not the engine oil cooler
That’s is fit and extra cooler because you are using same original lines, and using the factory one. It’s just and extra cooler.
Great looking kit guys.
Are you plumbing the cooler to the inlet or outlet from the top radiator fitting?
This is one important step he didn't explain. But i can tell you the transmission hoses has inlet and outlet. the top hose is inlet, bottom one outlet. Here what you need to do you only need to take the bottom hose off, connect it to the one side of the cooler. The other side of the cooler to the bottom socket of the radiator. that make the transmission oil goes from the transmission to the radiator, than to cooler and last is back to the transmission again . hope that helps.
@Jason Saggers not it you use a large enough cooler and you are not in cold climate region. another reason it goes to main radiator is to get the fluids (coolant and ATF) up to operating temperature quicker. i am doing a cooler install and will be bypassing the radiator, i live in tropical climatic region.
No correct. Need to use the bottom connection. I dont know why kaon keeps refering to this video when their instal instructions that come with the cooler contradict it.
Im seeing my trans temp at least 20-30C lower overall after installing this... Must be good for it... Couple of tips, the new hoses are tought to put on the nipples, use a grease on the nipples before sliding the hose on... Also the hoses have a clip down beside the radiatior, and the original hose has a thicker tube around it. Take the tube off the original hose and put it on the new hose so it fits nicely in the clamp.
The auxiliary cooler is added after the radiator as per all instructions from various cooler manufacturer. I did my Hayden 679 the similar way. Do you recommend a thermostat for warming up the fluid for vehicles in tropical regions?
@@tex959 thanks I agree with you, I am just being extra cautious and also find out why the manufacturer wants the transmission to run hot all the way up to 100c and above. The Hayden 679 is just a cooler with no internal thermostat. I live in a tropical country where there is no chance of winter or snow so I guess overcooling is something I don't have to worry about.
You didn't fit it correctly. The instructions clearly states in series after the radiator
Beware - These brackets no longer fit right with the Davies Craig 678/698. Davies Craig has added 2 more plates which has increased the size of the coolers by 16mm. Wasted a lot of time 😞.
Might help if you washed down the engine bay a bit before starting work....