jgue467
Senior Member
Usually folks attach a hose between the in/out of the factory trans cooler so if the thing leaks inside the radiator, the coolant just swings back thru the hose. Luck! :banana:
How common is the Pink Milkshake?
- Thread starter speedgoat
- Start date
Usually folks attach a hose between the in/out of the factory trans cooler so if the thing leaks inside the radiator, the coolant just swings back thru the hose. Luck! :banana:
jeff_connors
New member
Right which I would have done that if I had that option. Since the nipple came right out in my hand and it would not go back in, that was not an option. Has anyone successfully caped the 5/8" hole with a plug or other? I have had many people look at it and there does not seem to be ready fix. I have it held in place now with the nipple that came out and a clamp. I tried to JB Weld it in place but the pressure causes it to leak. I have to mechanically put a fitting or other in the hole and lock it there to withstand the pressure. Anyone assist?
flyfishinguy
New member
210000 shake of death. All maintenance up to par. Just had it inspected in shop one week prior. Sad day. Just bought new radiator. Was going to install this weekend.
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JayRolla
New member
That sucks man. They are not able to inspect the inside of the radiator. Only way to avoid it is replace the radiator every 100k miles and or bypass the radiator.
flyfishinguy
New member
Had everything else done and up to date. Did coolant flush and thermostat. 2500k ago. Noticed a tiny stress crack at top of rad. See what a guy gets for procrastinating. Sonofah!!!!
Johny Octane
New member
I run a transmission shop. I see this happen more with Nissan than any other manufacturer. Second is GM products. Rarely a Toyota. It is a preventable problem. Simply buy a good quality transmission cooler and bypass the radiator completely. I am not the only shop owner in the world. others may have a higher ratio. Others may disagree with a secondary dedicated cooler. I solve problems by eliminating parts or processes that can affect other parts and processes in the same circuit.
jgue467
Senior Member
It's a design used in many vehicles successfully. Unless you live in a cold climate year round, I recommend replacing the radiator every 10 years and run in series with an external cooler, here's why.
I tried the bypassing for a couple years, your trans will heat up in stop/go well above 220, maybe even as high as mine, 237 - and turning OD off won't help ya in this situation.
Now playing around with the OD button (to turn it off) at highway speeds can yield lower trans temps when in 3rd or 4th gear, by about 20-25 degrees, but now you're having to rev the engine higher, that may or may not bother you but it's a big difference between 2150rpms and 3400 (mine roars at 70mph) when turning OD off.
So then I decided to replace radiator and run in series with external cooler. Now the trans won't ever go above the engine temp (on the longest of runs nearing 300 miles; 186-190 degrees). I think this is a better setup for brutal temps in some areas. Plus I get better mpgs not goofing around with the OD button all the time and I think these engines like the Rs nice and low. Luck and enjoy. :cowboy:
I tried the bypassing for a couple years, your trans will heat up in stop/go well above 220, maybe even as high as mine, 237 - and turning OD off won't help ya in this situation.
Now playing around with the OD button (to turn it off) at highway speeds can yield lower trans temps when in 3rd or 4th gear, by about 20-25 degrees, but now you're having to rev the engine higher, that may or may not bother you but it's a big difference between 2150rpms and 3400 (mine roars at 70mph) when turning OD off.
So then I decided to replace radiator and run in series with external cooler. Now the trans won't ever go above the engine temp (on the longest of runs nearing 300 miles; 186-190 degrees). I think this is a better setup for brutal temps in some areas. Plus I get better mpgs not goofing around with the OD button all the time and I think these engines like the Rs nice and low. Luck and enjoy. :cowboy:
4Gunner_Dan
New member
I recently installed a hayden 698 and bypassed my radiator. I installed a trans temp gauge too so i can monitor the temp. I've noticed that I hover between 130 and 150 typically.
According to certain sources, thats not hot enougj to burn off condensation, and it could lead to premature wear and tear and possible failures in the transmission.
What are your thoughts on this? Have you had issues with your bypass? Do you know your regular temps? Im thinking about installing a wye system so i can switch between running through the radiator and cooler, or just through the cooler via inline wye valves.
phattyduck
Elite Member
When you see temps on here quoted, it is on the OUTLET of the transmission, where the OEM sensor is located and where trans fluid temps are highest. The OEM trans fluid in the pan is often down in those temperatures you quote.
A transmission isn't like an engine that has combustion byproducts getting into the oil (fuel+oxygen turns into CO2+water). No combustion = much less water contamination. There is no issue running a transmission well below boiling temps - 130-150*F is great range for modern synthetic transmission fluids that are lower viscosity at low temps.
-Charlie
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