Torque Convertor lock up instal

[MUMSRIG Avid PP Poster! Find all posts View Profile Close MUMSRIG]

I should hopefully be joining the Lock Up club next week as I have lined up my Auto Sparky mate to give me a hand

[Davis Dieso Junior Member Find all posts View Profile Close Davis Dieso]

Good idea Bill,
I think they all need cleaning out, at least once in there life. My 1KZ was all gunked up in the intake manifold. Blocked of the EGR and fitted a catch can. The D4D's have the problem even worse apparently, but can't block off the EGR as it brings up a code.

[chardo Junior Member Find all posts View Profile Close chardo]

Davis Dieso
Hi Jamie, Have just started on my inlet manifold after much googling in the Pradopoint and the Hilux Forum. Lots of great info and photos in the Hilux one. I am cleaning it all out then have a Mann Hummel Provent 200 catch can on the way to help after the clean up.
Repco sold me a small aerosol of "ThreeBond Super Engine Conditioner for diesel motors". He said he gets his behind kicked if they run out of the stuff its that good. Its made for spraying into the inlet with the motor running. I think too much gunk going through the engine myself, so clean it up first then in time use it. Im waiting to see how Marks Lock up kit works. If it works like yours he will be happy, So will others. Must go and get into this. Take care Cheers Bill.

[smally Junior Member Find all posts View Profile Close smally]

Been watching this thread with interest for a while now, not sure I want to do the lockup mod though. Maybe 30 years in the trade has made me cynical! What I'd love to do is get my '05 KZJ upshift a bit earlier. Installing something along the lines of the 'Power / Economy' switch on the BTR 4 speed Falcons was what I was thinking. Getting the trans to shift earlier without reducing line pressure should be possible electronically. Time to start studying the wiring diagrams!

[Davis Dieso Junior Member Find all posts View Profile Close Davis Dieso]

Haven't heard of that stuff before Bill, but have heard of three bond. You would find "carby cleaner" will do a similar thing. In my case, there was way too much crap in the intake manifold (up to an inch thick) to send it through the motor. However, may be worth a go, say, every year or so to keep it clean. Easier than pulling the manifold off.....
While I had the manifold off, I took particular care to clean the ports right in around the valves. If you do this by turning the motor over so the valves in turn are closed and using compressed air to blow the crud out should prevent much going through. In saying that, Mine gave a few coughs and splutters on start up, but a good rev fixed that quick smart. No harm done, still purring.
I'm working on the idea of maybe fitting a VNT turbo???? But thats another thread..
Good luck with the job.
Cheers, Jamie

[Davis Dieso Junior Member Find all posts View Profile Close Davis Dieso]

Will watch that one with interest Smally, very interesting?? I must admit, Mr Toyota didn't do a very good job of how they shift up. I'm forever lifting my right foot to allow it to change up, its a pain!!!
I think Wholesale Automatic Transmissions do a kit that allows full programming of shift changes and all.
I have a friend who did their auto trans conversion on his 79 series and he can alter all the shifts, up and down etc etc. Really good.

[smally Junior Member Find all posts View Profile Close smally]

Finding the time to work out how to do it will be my biggest problem. Need to get my hands on a good wiring diagram first. Might check out the Wholesale Automatic Transmissions kit first.

[chardo Junior Member Find all posts View Profile Close chardo]

Davis Dieso
Hi Jamie, I have completed my clean up of the inlet manifold/EGR valve etc,etc. All in all it was quite a big job, but I feel after I fit my catch can I should be sitting pretty good for a few years at least. I just got onto the head ports with a tea spoon and then with my fingers and some rag, I got right in to the valve stems. A light squirt of carby cleaner and I was back to bare metal again. It came up very good just a rag and plenty of patience. I cleaned the main crud out of the manifold with straight petrol, worked a treat and cheap as well. My only prob now is where to fit the Catch can as I have a second battery fitted where "The Roo" has fitted his. Not to worry I'll find a little spot for something so important. Has anyone heard how Mark went on his weekend test run??? Nuff said I'm off. Cheers Bill.

[chardo Junior Member Find all posts View Profile Close chardo]

Davis Dieso
Jamie ,Have you been into "www.newhilux.net " before. They have a lot of info and photos on the inlet manifold clean up. I haven't had time to investigate further into the forum to see what else is there. Cheers Bill.

[MRW82 Member Find all posts View Profile Close MRW82]

Hi guys. I gave the setup a good workout over the weekend and it worked great. Had full lockup when it was on, operated as per normal when off and never got any fault codes.
It is most effective on long gentle climbs where the TC would normally unlock, but not quite enough load to drop back to 4th, this is where the switch is beneficial because the engine can handle the load at lower revs of a locked drive, and when the load increases the auto shifts back to 4th anyway. Gear changes with TC locked were still smooth.
There were times I felt the transmission worked better/just as well in normal mode. Like steep hills, let the auto kick back and do its thing. Sometimes it felt better to let the TC slip than to labour it in 5th locked or have it revving harder on 4th. For short steep hills slippage isn't an issue, it's only going to be an issue after a prolonged period. I was playong around a bit, testing on and off. The beauty is I can now change it at the push of a button to suit driving conditions.

[chardo Junior Member Find all posts View Profile Close chardo]

MRW82
Hi Mark, Sounds like everything went great, this is exactly what mine does with the pop top van in tow on slight climbs where it slips out of 5th and it should just lug a bit further. Are you going to "patent" it??? You sure have put in the hard yards on it. I would be interested in getting one off you if you went that way. Im sure others would too. As you see in the above letters I have the mechanical ability to carry out tasks inside the motor/driveline areas, but alas, I fall short in the electrical side of it all. OK its great to see it all went the right way, must head off. Thanks and cheers Bill. PS Well done.

[Davis Dieso Junior Member Find all posts View Profile Close Davis Dieso]

Well done Bill, sounds like you've done a stirling job of it. Yours is a D4D (if I remember correctly!!) so a bit different to mine (1KZ-TE) but same principals. I fitted the catch can just behind the air cleaner in front of the brake master cylinder. Not sure if that is possible on yours???
Haven't seen that website (hilux) Bill, but will check it out now thats for sure. Good stuff...
Sounds like MRW82 has had a big win with his setup, such a good result. I'm still smiling driving mine. 15,000km now and just great..
Cheers, Jamie

[chardo Junior Member Find all posts View Profile Close chardo]

Hi All, I have just completed the installation of a Mann Hummell Provent 200 Catch can. I used Bushbasher59 idea, bracket and location under the starter motor (D4D) as it was the only place I could find to put it. Thank you Bushbasher59 for the headwork. I have just about had enough of the mechanical work for awhile. I better head off and find something else to do now. Cheers Bill.

[BigFoot120 Lurker Find all posts View Profile Close BigFoot120]

Auto Release TCC Locker

Hi all.
I've been following this with interest as have many others.
My concern is for the additional wear on the selection clutches. In the Toyota design they cope with the inertia of just the torque converter. If the TCC lock is on during a gear change, suddenly you have the inertia of the engine to deal with as well. I would expect a tenfold wear rate increase at least.
Having overhauled A/Ts, I know that the clutches are the life limiting item in most cases. You will get away with it for a while but I think there will come a time when you regret doing this mod.
Nevertheless I am still interested in the advantages. We just need to remove the disadvantage.
I decided I would look at an electronics approach and after studying the ECU behavior for this, the solution jumped out at me.
All it takes is a little digital transistor logic and you can have your TCC lock automatically disengage during gear changes just like the ECU does, except of course you have more control.

I've documented it here: https://www.dropbox.com/sh/eq3pu6e7f...OomAu6lra?dl=0

The start point for reviewing this data is "Prado 2003 TCC Locker - System design.docx".
It applies to a 2003 1GR-FE V6 with a A340F 4 speed A/T. It can no doubt be adapted to others. It's just a matter of running through the same process of investigating the ECU functionality and matching it.

BTW, I have bench tested it only and it's doing exactly what it should. It's going in the car as soon as I get the high power resistor delivered.

Hope you find it of interest
Rob

[Davis Dieso Junior Member Find all posts View Profile Close Davis Dieso]

I know what your saying Rob, was certainly a concern of mine originally (and still is). However, I think clutches are subjected to far more abuse (in say a V8) at full noise with the convertor. I know they aren't doing that all the time, but some get to take it a lot. The Toyota boxes aren't something we see out of a buzz box, and are quite a large robust unit, something we don't hear of failing very often. They do incredible miles of service to boot, and often totally neglected.
Time will tell, something I will find out, if this experiment will be worth it or not.
So far, mine is thriving, having done about 17,000km now, all with the convertor locked. Absolutely no change to the way it changes (slippage etc) and the oil looks the same. No sign of darkening or smell (burning). If a failure occurs, it is my thought it would be the 3rd gear clutch to go, as it is the biggest jump up from 2nd.
Even towing my heavy camper trailer, it changes gear magnificently.
Right at the start of all this, I said this may not be for everyone and lots of people will be wary of it, and rightfully so. I am just prepared to take this risk.
Your electronic version you describe above, sounds like the more modern version and an evolution of our ways. Well done.
We will all be looking on with interest to see how you go with it.
Cheers, Jamie