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The mkiv Supra Owners Club

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A340E-GTE/GE Hybrid Transmission & SupraStick ECU Focal Point T.T. Automatic & Tiptronic Maintenance & Upgrades too If you have a Supra with automatic transmission, EVERYTHING you need to know is here N/A-T is constrained to circa 300 ftlb with A340E-GE, 400 ftlb with W58, or spend up-to £3k for 20+ years old 650 ftlb R154, or up-to £7k for 900 ftlb Getrag + up-to 3k for a clutch! Alternatively, with this cheap as chips Hybrid transmission, up to 600 ftlb N/A-T costs up-to £11k less & no expensive clutch to wear out either! This conversion is O.E component plug & play with; 2J, 1J & 1UZ in Supra, Soarer or Lexus and Flappy-Paddles can be used too The pages below are kept up-to-date & members can subscribe to enable alerts of latest updates & Hybrid information After browsing the clearly indexed 10-pages below, should further information be required, I give my telephone number by pm for talking in old money NOT for torture with text grunts!
  1. What's new in this club
  2. I’m pretty sure you can mix synthetic and conventional without an issue. I put Fuchs Titan ATF 4400 Ultra High Performance in the tiptronic box. It works a treat, what ever that is worth. Speak with Opie Oils - https://www.opieoils.co.uk an ex forum trader. They know their apples so will be able to advise you 100%. Lucas Transmission Fix (Stops Slip) is also a good addition when doing an oil change. When refitting the pan make sure you use a small amount of gasket sealant (Loctite Grey SI 5660 to be precise) as you don’t want it going inside the pan. Make sure both surfaces are spotless. If the pan does leak (no reason why is should) don’t be tempted to fit a gasket (you can buy them) as it’s only a temp fix and will start to leak and then warp the mating faces. Careful not to over tighten the sump bolts, think they need 6 ftlb maybe a little more but not a lot. If fitting a temp sensor for the box (very good idea btw) make sure it’s in the bottom of the sump, where the plug goes. You can also drill and tap for a sump magnet if you want to be super cautious. Nice mechanical gauges like stack are very accurate.
  3. Credit where credit is due, this forum owes a lot to Mr P.Especially us autoboxers. He always put up results and his endless tinkering has been a real lifesaver.
  4. Yeh, I’ll do what you said though and take a look at what comes out first. I’m thinking this too, at least then I know what’s in it from the get go. Pan looks fine, no leaks that I can remember but I’ll check this weekend. I do like the idea of that. I was going to get the SRD auto box cooler when I change the intercooler and having a way of monitoring the temps would be very good. I’ll look into that tomorrow
  5. Its a cracking guide that, last pic should be his first comparison, will guide him if he needs to anything or full flush.
  6. @tayr A full flush is a good idea, new filter too. How is the pan holding up? Any leaks? If you are going for a full flush, you could fit the deeper transmission pan and a decent in-line oil cooler (with thermostat) to future proof.
  7. Do you mean you don't know what type has been put in before? As I said above if the atf looks ok and the box behaves smoothly etc leave it, or do the 2L part flush.
  8. If you have no idea, as far as I understand, if the colour is of a burnt red/brown, then change most of it. Equally if it's red, and the box doesn't clunk more than it should, then just do the 1 part (approx 2l) change. Last time I did mine (2l) I used Toyota's own type IV ATF, and is what's recommended on here. If new ATF is added too often then the polymers can sludge up the box.
  9. Just bumping this great thread.. I've got no idea what's been used in the past on the A340 box. Is it worth doing a complete flush and replacing with either Toyota T-IV or Mobil 3309?
  10. If you're reading this feel free to disregard the message on your feed, it wouldn't let me reply to this thread before for some reason! I have a question regarding this post of yours from a few years ago, where you say the Lexus 30-43LE is equivalent in strength to a Supra TT 30-40: I am turbo converting an EUDM GS300 with an A340E/30-43LE 35000-3F270. If what you said here is accurate then I should be able to achieve my 400 - 450 crank HP goal using this transmission without modification, but I can't find any corroborating information or technical documentation. The link you included in the post also no longer works. So I am wondering if you could give me any more info, or let me know your source etc? Many thanks! Acme
  11. Hi David I used this to great effect at the weekend, after painting the throttle body I had the O/D light flashing and the car drove terrible with weird boost issue above 1 bar aswell. After doing this it is great. One thing i did not is that I wasnt able to get a resistance reading as per the lower half of the table " Throttle Valve Fully Open".
  12. TT auto transmission prop flange component part numbers. 34780E YOKE ASSY, FLANGE (FOR AUTOMATIC TRANSMISSION) 34780-140201 34780G NUT (FOR ATM FRANGE YOKE) 90179-220181 34780H WASHER, PLATE (FOR ATM FLANGE YOKE) 90201-30005
  13. Hi David Did you get any further with this project ? I am interested as I may e adding more power to my car in the future and want to understand the exent of parts and in this case, Auto Boxes i would need to collect. I believe that a 550ft/lb modification may meet my needs but If a 650ft/lb option is available then i would look at the cost/benefit
  14. There will be tears for missing this one. T.T. box. £75. https://www.ebay.co.uk/itm/114509361829?ul_noapp=true
  15. T.T. auto box with T.C. £240. https://www.ebay.co.uk/itm/184501118033?ul_noapp=true
  16. Tiptronic box tinkering. https://old.mkivsupra.net/vbb/showthread.php?360230-Aristo-transmission-(A340-LS)-Valve-body-gasket
  17. Toyota Main Dealer or Amayama should be able to get you those. There are two different gaskets, one for each side of the separation plate. Don't trust aftermarket versions, they are not pattern correct. If you are stripping the valve-body, it would be a good idea to replace the rubber check balls whilst you're at it, by now they will have worn to be egg shaped.
  18. David, has anyone been able to find a place that sells a valve body gasket for the Aristo (Gen2) Tiptronic gearbox?
  19. Sudden power loss https://www.mkivsupra.net/vbb/showthread.php?360005-Sudden-power-loss
  20. TT Auto not shifting in 4, no manu light https://www.mkivsupra.net/vbb/showthread.php?348640-TT-Auto-not-shifting-in-4-no-manu-light
  21. I have had my drive extended and it is now 27" longer, which might only be a little, yet is enough to make a big difference. There is now enough space for Socially Distanced fine weather transmission tinkering. Using the back of a van as a bench saves all of the heavy lifting and my little stool is the perfect height to perch on. Lavender smells better than ATF too. Servicing and shimming accumulators on Wile-e Coyote's Tiptronic box Converting an Aristo Tiptronic box to fit Supra, servicing and shimming accumulators for Uzair
  22. One final detail: Some Aristo boxes have a hose from the "breather" at the top, yet Supra boxes have a neat little "capped breather". Using pliers, these will simply pull out and are easily swapped.
  23. Using an angle grinder, cut off centre peg. Make sure that the 2 shims are between the flange and transmission fit Supra flange, re-tighten nut to 90ftlb and re-lock tab on nut with hammer and punch. (The Eagle Eyed may notice that the tab on this nut is yet to be locked.)
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