Transmission Cooler

zer099

Zat_Zum, that's horrible. If you had a in-line thermostat failure of that magnitude I hope you filled a warranty claim. As ScoobieZ said flow should be constant to the transmission under all situation with a in-line thermostat (i mean, you can just google the diagrams), by design, unless some type of catastrophic failure happened; which would be either a manufacturing defect (warranty) or user error (instillation error, or foreign debris from transmission blocking thermostat/passageways/damaging thermostat).

I do think that regardless of the whats and whys the point being that failure is an option with these (as anything) should be considered. It gives an other check to the Earl's unit for the three sensor inputs; one of which could be exit pressure for those that wanted to know their tranny is always getting flow.

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2009 G37X | 326 AWHP | 264 AWTQ

Zat_Zuma

ROFL ..... things we've done and sometimes failed on, don't carry warranties.
Sometimes we have to design a better mousetrap and usually the best solution is to keep it simple and functional. You may have all the gauges and kill switches in the world but its not always the best solution.

ScoobieZ: I use to post my discoveries and innovations, which vendors sell to you now, in the early years and worked with some vendors and shops. Still work with a few shops but in a limited capacity now. What I found was the more info I posted, the more questions I would receive on a daily basis and members would treat me as their personal library. It was 20 PM's a day, at its peak. So I removed most of my posts and it stopped most of the PM's.

For the most part the non-members were the rudest and most demanding and wanted everything for free, so they can berate shops for a deal or cheaper parts and demand/expect you to comply to their demands.

The way the 350Z forum is now and just before it was sold. Support the370Z Forum or you will lose it. I'm already checked out lol..... I'm retired

Zat

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[B]2009 & 2017 370Z Touring Sport Autos SOLD

gbrettin

I've been running a Mishimoto heavy duty trans cooler inline with my OE radiator for the last three years. All appears to be good since the install. I haven't been using a thermostat , fyi.

Cheers



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MILENKOGT

Use the Trucool 40k, works great for my RE5R05A. Plus it handles toting around 5200lbs of truck.

I know its on a truck, but the principal is still the same. This is a cheap and effective option.

LPD47391 (Trucool 40k) 8.5"x22.75"x1.25" (height x length x thickness)

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2008 Nissan Titan Crew Cab 2wd
JWT C8/S7 cam package, Full Bolt ons
372rwhp/447rwtq Uprev Tuned @ Z1 Motorsports

bigaudiofanat

SO I'll jump in here. I'm tracking my G37 and the AT doesn't like the extra heat at all. I get heavy shifts after about 3 laps. I'm jumping between swapping the fluid for synthetic or adding a cooler. Or both actually. But I also read that the trans is a sealed system and should only be drained and filled, not flushed. Too many choices.

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MILENKOGT

A good trans cooler option that is a low pressure drop bar and plate style would be the Trucool SR4588.

Fluids you'd want to use Nissan Matic-S or compatible. Such as Castrol Transmax Full synthetic multivehicle. Staying on top of your service intervals is equally important, and further compounded on how you drive the vehicle.

For the RE5R05A and RE7R01A/B there are shift kits available. Level 10 offers valve body upgrades for both with upgraded solenoids, their own shift kit, and revisions to parts that are prone to failure. SONNAX is also provides valvebody upgrades and replacement parts for the RE5R05A, not sure of the RE7 though.

Transgo offers shift kit for the RE5R05A as well. (not the RE7)

The above coupled with a competent tuner who can adjust your expected torque values in Uprev (not sure with EcuTek), your 5spd or 7spd should handle whatever you throw at it for many years, especially being naturally aspirated.

Be mindful of fluid temp before going beating the piss out of the vehicle under WOT as well.

If you want to further upgrade your transmission, Level 10 has a full build options where they use the aformentioned valvebody upgrade, but also include Borg Warner clutch packs (frictions), +1 extra frictions in the Input and Direct drums for better holding capacity, modified/enlarged fluid pump, cryo treated output shaft option, etc etc. (for the RE5R05A, the RE7 gets similar upgrades). Apparently the owner of Level 10 (Pat) is good friends with whoever manages the clutch/friction division of Borg Warner.

You could go as far as to WPC treating or REM finishing the planetary gear sets, shaft splines too if you wanted.

Albeit, no transmission tuning short of what uprev/ecuteck allows. I guess you could try for PCS-2000 Powertrain control systems standalone and purchase their harness with software to try it out.

Or wait and see if HPtuners provides support for either transmission (doubtful, but hopeful).

Lastly, once Circle D Specialties finishes my converter for my Titan, they may be willing to start production with the Re5r05a converters tailored to your build. I imagine if someone sent in a 7spd RE7 factory stock converter to build they would do so. They are building a billet cnc stator for mine that is one off. But will allow a basis to start from. Its another option over Level 10 and Edge.

So yeah, get a transmission cooler.

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2008 Nissan Titan Crew Cab 2wd
JWT C8/S7 cam package, Full Bolt ons
372rwhp/447rwtq Uprev Tuned @ Z1 Motorsports

weihan

To revive this thread,

Has anyone used the mishimoto trans cooler with the electric fan?

https://www.z1motorsports.com/transm...it-p-4126.html

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Tractionless

I'd be concerned about over-cooling with that if not a dedicated track car.

The torque converter doesn't start its lock up until 122*. I'm using a Hayden 676 which is equivalent to the lowest duty offering on Z1's site. On the street temps coming to it from the transmission are very close and sometimes below 122*!!

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"Z"en

I'm running 28-row trans cooler and 6" fan on its back.
https://www.instagram.com/p/CCqLlq7H...d=ny48ftddq9hb

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weihan

So my mishimoto transmission cooler with the electric fan came in. Where do you guys recommend tapping into to turn on the fan? I was thinking the radiator fan's wire for signal since the fan is not needed to be on when car is running; as what the OEM fan controller does.

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'98 GC8 STI * '13 Yamaha MT-09 * '09 Ducati M696 * '12 Z34 Sport 7AT