LC 200 fitting torque converter lock up?

Thanks i do some more research

Forgot to mention as well - Transmission temps (as shown on my Scangauge) with the TC locked drop considerably - a true benefit when towing.

Dave

Could well be correct fisho64 which would be why Wholesale Automatics provide an instruction sheet with a number of do's and don'ts, one of which is the lockup is not to be used with more than 50% throttle application.

Which is what the ecu does-one twitch with the foot.
How do you quantify 50% throttle while driving?
Or when the son/daughter/valet/service guy etc drives it?
Dont worry, i dont have 100% faith that Toyota gets it correct.
Best bet would have been for Mr Toyota to get the gearing right-its way too tall, even another 100rpm at 100kph would be much better.

It might be interesting to read the fine print supplied with the fitting and operating instructions for these kits.
Will the suppliers warrant to meet the costs of any repairs to failures that Mr Toyota won't if the kit fitment is found to be the cause.

Yeah, it may be an automatic but if it was me I would be doing what Alan H has suggested and "operating" the transmission when towing.
Keep in mind that when the aforementioned Mr Toyota designed the vehicle he had a heap of other criteria in mind other than you and me towing our home on wheels up hill and down dale.

Cheers
Pop

fisho64 replied:
you need to be very careful with this.
The clutch on the torque converter on a 200 is not alot bigger that a CD.
It is not designed to take anywhere near the full torque of the engine, as is neither the transmission itself and why the ECU limits the torque when you stomp your foot down.
Its not a mod I would undertake lightly on my 200, given the expense of repairing the lockup clutch if damaged.
It certainly does keep the tranny cooler, as can be easily seen with a scangauge fitted.

I have to agree with the fisho64 on this.

The L200 gearbox is the 6sp AB60f or Aisin TB68ls and is only rated to 650nms.The same box as used on the USA L200 with the 5.7 lt v8 petrol which developes considerably less torque.

I think it is no coincidence that the v8 4.5lt ttd motor has been tuned to develope only 650 nms as well to match the maxinum output of the gearbox.
The ECU has many features programmed in to help the gearbox shortfall as well.I think you tamper with this at your own peril.

Chipping this motor which is capable of enormous power increase would be equally foolish as the gearbox is already at it's maximun.

Elvin

Thanks for the quality responces i am towing this week to Deni am fitting scan gauge today and will record info before deciding on installing kit