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Post by madmatt on Jul 1, 2011 8:29:25 GMT -5
Hey folks,
Sorry for the double post, as I mentioned this over in the rally section, but I don't think too many people are there these days...
Without having opened the transmission, I'm trying to sort out why Wiki says 5.2 final drive and 3.7 rear diff (gen 1)
I'm hoping to up the final drive a bit, (better gearing and cope with the taller tires). and would love to see if it's even remotely possible before diving into the transmission.
If you have an FSM with the Transmission schematic, could you scan and post. That would be awesome!
Thanks,
Matt
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Post by Deleted on Jul 3, 2011 13:54:59 GMT -5
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Post by madmatt on Jul 4, 2011 9:41:49 GMT -5
Ferox,
Thanks so much! that's awesome.
Looks like the diff is driven right off the driven shaft of the transmission... Damn, not much room for changing front ratios, so I think I'm stuck with stock.
Thanks!
Matt
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Post by madmatt on Mar 5, 2012 15:37:07 GMT -5
Ferox,
Can you do this again for me WHEN YOU HAVE A CHANCE, NO RUSH!
But this time for the CVT?
My mad brain is thinking that the CVT has a higher final drive, and I could swap it to effectively give me better gearing... he he he...
Anybody with a DEAD CVT 4wd driveline kicking around? I would need the rear diff too!
Matt
edited for idiocy...
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Post by Captain Nemo on Mar 6, 2012 4:58:06 GMT -5
I have a 4x4 box in pieces on my bench, I'll check tomorrow but I'm pretty sure the take off gear for the 4x4 has more teeth than the driver gear on the secondary shaft in the gearbox that drives the front diff crown wheel.
This would make the 4x4 take off gear spin slower than the input shaft from the gearbox, thus making the drive shaft spin slower, requiring less precise balancing and a lower ratio at the back diff.
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Post by madmatt on Mar 6, 2012 11:54:03 GMT -5
Nemo, do you mean you have an ecvt box apart? I have never seen one... but my hope is that I can go ahead of the front diff and grab that gearing and the 4x4 stuff.
I think what you have said is exactly what I'm hoping for. the issue I see is that how do I get the secondary shaft and crown gears to match... as I'm assuming but have no idea, that there is some sort of secondary shaft equivalent in the ecvt... but it may not match the existing secondary shaft. But could I cut the gear off the ecvt equivalent, weld it on my secondary, and the grab the remaining gearing including a ecvt cars rear diff.
Matt
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Post by madmatt on Mar 7, 2012 18:06:38 GMT -5
Never mind....
I read wrong. I saw the 3.9 on the ECVT diff, and assumed the final drive in the transmission was higher too. It's not. It's 4.6 vs the standard transmission 5.2... Meaning I'd be going the wrong way. I guess the higher diff ratio is to make up for the lower final drive.
Damn.
Oh well.
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