Setrab 625 trans cooler?

[PachariAdv]

Has anyone installed the Setrab 625 trans cooler in their 460, or seen a writeup/video on the installation?

Our rig is heavy and we'll be towing a bit and this popped up in my searches as one of the bigger trans coolers that will fit. However, I am concerned about space since we have our winch controller and wiring taking up a bit of space in the area.

I'm also not 100% sure what parts I'd need to buy besides the cooler itself... if anyone has done it or seen a writeup on it and can point me in the right direction I would appreciate it!

I have searched here and GXOR and found a few mentions of it, but no details really.

 

[Acrad]

I am not aware of a writeup for that specific model but a 3rd party cooler install of a Hayden 678 here on a 460

 

[r2m]

Doesn't the trans cooler manufacturer have an installation guide? If so that'll have any/all components above and beyond the cooler for installation.
Generally most all after market kits come with everything needed, and sometimes some minor hand tools like allen wrenches, screwdrivers, etc.
I know finding a fellow end user that does the install in their garage is usually a lot better to follow an install, but check with Setrap and call their customer support line and see what they have.

 

[PachariAdv]

I am not aware of a writeup for that specific model but a 3rd party cooler install of a Hayden 678 here on a 460

Thanks for the link, appreciate it!

Doesn't the trans cooler manufacturer have an installation guide? If so that'll have any/all components above and beyond the cooler for installation.
Generally most all after market kits come with everything needed, and sometimes some minor hand tools like allen wrenches, screwdrivers, etc.
I know finding a fellow end user that does the install in their garage is usually a lot better to follow an install, but check with Setrap and call their customer support line and see what they have.

I haven't come across any kits on this... seems all fittings are sold separately.

 

[Rednexus]

I am in the middle of installing a Hayden 678 in my GX470. I did not buy the kit (I think the Mountain Passes kit is the only option) but opted to fabricate a simple mount out of some 1" steel flat stock. It's not a hard job if you can do some welding (I'm using a $200 HF flux-core welder). I've had to make a few bends in the flat stock to get the mount to work, but that is easily accomplished with a vice and a hammer. I also had to move the horns outward a little bit to get everything to fit, and extend the horn wiring harness (just spliced in some extra wire). If you have some basic fabrication skills it is not hard to make a mount and fit it in. It would also be an easy job for a shop to complete (probably 2-3 hour timeframe for a professional fabricator).

FYI the Hayden 678 is around 3X the size of the stock cooler and only costs around $45.

 

[Jstawgn]

Setrab makes really good oil cooler. They are very popular with water cooled Porsche crowd. They are a lot more expensive than Hayden that is popular for GX. I think they are way over kill for GX.

I have Hayden 698 and it overcool the transmission fluid. The ambient was about 50°F and in my 15 min commute it only gets to 135°F. This already have build in thermostat and it still did not heat up fast enough. I think ideal is 160-180°F.

Many now recommend even bigger Hayden 699 as they are easier to install using OEM mounting point.

No relocation of the horn. I did add 1/2" spacer as precautions.

 

[Hammeredsole]

Why not just use the OEM kit? I live in Texas where it gets to 110F during the summer. I did the OEM upgrade, and the difference of the fluid temp on the IN & OUT ports of the cooler itself is very drastic. On the hottest of days, temp to the touch was unbearable on the IN and merely hot feeling on the OUT. OBD port reading of Trans temps rarely sees above 205, and almost never above 200.

For me the plug and play fit, OEM quality, and zero questions of leaking or reliability issues were key. I've spent (ie: wasted) enough time on different cars shoe horning aftermarket parts into vehicles, only to have to repair, replace, or modify other things to make them work. Could I get about 5 degree decrease with a Wifferdill Turbo Encabulator custom mounted to an inconel transmission thermostat routed with carbon nano tube transmission lines? Yea probably. Is it worth it?

 

[Rednexus]

My $44 Hayden 678 has been working great for the past couple of weeks. Trans temps are 20-25F cooler than they were before.

The OEM trans cooler (at least on a GX470....) is inadequate for sustained mountain climbs. It's fine in very hot, flat areas (like TX....or KS when we drove for a few hours in 107-degree heat it stayed below 200F), but can't keep up when the torque converter stays unlocked for more than a few minutes (such as when you're pulling a multi-mile mountain grade - even in cool temperatures - or perhaps on flat ground if towing with multiple TC lock/unlock cycles). If the trans is running 200-205 unloaded it could easily climb to more like 230F or higher on a long mountain climb or when towing.

 

[Acrad]

 

[Washingtontaco]

My $44 Hayden 678 has been working great for the past couple of weeks. Trans temps are 20-25F cooler than they were before.

The OEM trans cooler (at least on a GX470....) is inadequate for sustained mountain climbs. It's fine in very hot, flat areas (like TX....or KS when we drove for a few hours in 107-degree heat it stayed below 200F), but can't keep up when the torque converter stays unlocked for more than a few minutes (such as when you're pulling a multi-mile mountain grade - even in cool temperatures - or perhaps on flat ground if towing with multiple TC lock/unlock cycles). If the trans is running 200-205 unloaded it could easily climb to more like 230F or higher on a long mountain climb or when towing.

Agreed! My stock cooler is insufficient for long climbs. I thought my transmission skid plate may have been restricting cooling air to the transmission pan so I drilled a couple 1 1/2" holes in it and it didn't help. I'll be upgrading to the Hayden this fall.

 

[Acrad]

One thing to try before replacement is to keep the AT thermostat pinned open. I've left mine open for years with no ill effects.

I never get above 205-208 or so even towing on mountain pass climbs.

It is on the right rear of transmission and a simple paper clip will keep it open.. I've found it keeps mine closer to coolant temps

 

[Washingtontaco]

Do you leave it pinned in winter? I am often in the mountains during winter.

 

[Acrad]

Yep... I now leave in for winter...first year I took pin out but last 3 or so years I have left in. Transmission seemed to heat up just negligibly longer from a cold start.

 

[r2m]

Yep... I now leave in for winter...first year I took pin out but last 3 or so years I have left in. Transmission seemed to heat up just negligibly longer from a cold start.

And I'm assuming when you say "winter", you referring to snow and sub freezing temps? Considering you're in Washington, albeit, not all of Washington gets snow and freezing, especially if you're on the coast.

 

[Acrad]

Correct. I am up in mountains a lot during the winter with plenty of sub freezing temps.

Monitor your AT temps via OBD before and after the pin. This only applies to vehicles with an external cooler and not the stock setup solely within the radiator.

 

[GXO]

I have the WAT unit on our rigs and they are basically the same thing but with a bracket and hoses and fittings etc. You just need a place to mount it and to connect the transmission lines from the oem radiator to the new cooler. So not hard AT ALL. We ended up using a fin mount for her cooler to allow for the winch similar to this: Amazon product ASIN B0186N7YB0
Neither of us have any issues with heat etc with 4.88s, a nomad valve body, the added cooler, and the valve body adding a manual torque lockup. We just hit the button in the hills or long straights and the transmission stays super cool and we haul butt.

 

[Acrad]

I do encourage 460 owners

- Test stock
- Test with an external cooler ('20+ w/offroad package you are already there) - US Market (if you have vehicle in other markets please contribute feedback)
-Test with cooler pinned

Leverage your OBD tools....

In my use ...pinned can get you a lower temp point that isn't as high once you climb that next hill

Debate point on when the thermostatic switch opens... and seems to follow a more "analog" pattern as it based on melting wax within the thermostat....

190-205? Feedback will confirm what it is.....

 

[r2m]

I do encourage 460 owners

- Test stock
- Test with an external cooler ('20+ w/offroad package you are already there) - US Market (if you have vehicle in other markets please contribute feedback)
-Test with cooler pinned

Leverage your OBD tools....

In my use ...pinned can get you a lower temp point that isn't as high once you climb that next hill

Debate point on when the thermostatic switch opens... and seems to follow a more "analog" pattern as it based on melting wax within the thermostat....

190-205? Feedback will confirm what it is.....

Just to confirm so I'm not mistaken and for clarification:

• You DO NOT want pin if your trans cooling is stock.
• You DO want to pin if you have a trans cooler.

If I'm wrong, I'll re edit this post to not confuse people.

 

[Acrad]

I've not seen any real benefit on stock vehicle without an external cooler

I have seen lower overall temps pinned open on my vehicle with it's external cooler I added. I can't attest to pinned behavior on larger 3rd party coolers so wanting to hear some some feedback from those that have tried.

You can find quite a bit of discussion about it on Tundra forums as well

 

[Acrad]

Another thing '14+ owners can try is to monitor their ATF Thermal Degradation to see what longer term affects are to the transmission fluid. This can be viewed with OBD Fusion/Link

This variable is not available on 10-13 models.

ATF Thermal Degradation Estimate from ECU

Hello, I have been working with the Torque App developer team and we found that the 2gr-fks outputs an ATF Thermal Degradation Estimate. The range is 0...

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