Road Trip With the S/C

[BaM*BaM]

I think it has to do with the torque converter locking up, and forcing the tranny to shift.
It was discussed a little in this old thread about an early dyno test for a S/C:




http://club.vmag.com/ubb/Forum39/HTML/000168.html


""Bob is right. John Finell of Mike Hamm Engineering told me that they didn't know how to disable the torque converter and wasn't able to prevent the gears from shifting. As I remembered he said they tried to run the
test on 3rd gear but couldn't maintain it. The increase in power caused the torque converter to kick in.
I think that's what John said. Sorry I'm not very good with auto technical jargons.
Maybe someone in this forum could explain this a little better.""


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"FeatherFoot
Visiting Member

Posts: 10
Registered: Nov
2001
posted 11-28-2001 03:43 PM

"There seems to be some question about the drop in HP @ 3800 rpm.

that is where the Tq converter locks up. Unfortunately, we were not able to lock the TC in third gear. We have cables for that with other models, not the Isuzu.....ect"

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I talked with Tone about this last night. It seems to happen only when climbing steep inclines. I'll try to duplicate it today on our local mountain pass.
It happened just 5 times only on the whole trip that had mucho steep hills. Each time it caught me by surprise, and I didn't try to duplicate the event at that time.

It did force me to either stomp on the gas to downshift, or to shift to 'D', then back to '3' real fast, to downshift and force it back to '3' again.
Again,... this happened only when climbing a steep hill at speed. At all other times, the tranny operated perfectly with the S/C. And I truly love this mod!