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| Diff Gearing Options. https://auszookers.com/forum/viewtopic.php?f=37&t=55948 |
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| Author: | Allergee25 [ Tue Jul 16, 2019 8:25 pm ] |
| Post subject: | Diff Gearing Options. |
Hey guys I am currently restoring a 1985 SJ40T. I plan on retaining the F10A and 4spd box (For now atleast). I plan one running 30 or 31 inch tires once its lifted ect. I want to do a w/t swap while the car is in pieces but my question is about how the diff gearing differences going from 4.11 to 3.9 (I think that's right). I will most likely be daily driving the zuk when its done so being ably to maintain decent highway speeds would be good. Basically just curious if the standard w/t gearing will be drivable as a daily and what the ideal gearing would be further down the track? Thanks guys. |
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| Author: | Gwagensteve [ Wed Jul 17, 2019 8:40 am ] |
| Post subject: | Re: Diff Gearing Options. |
No, gearing will be terrible with 31” tyres. I’d recommend 6.5 transfer gears. |
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| Author: | ZUZUKI [ Thu Jul 18, 2019 10:40 pm ] |
| Post subject: | Re: Diff Gearing Options. |
Retaining F10A & 4spd....30/31" tyres....daily driving.....maintain decent highyway speeds..... A whole lot of incompatable with 2019 there. I think your stated goals are outside the parameters available with that combination. You might do it for a bit, but the 'novelty' will wear off pretty quickly. That's a very late SJ40 1.0litre, so your t/case should be able to take the commonly available gearsets. You'll need to go deeper than 3.909:1 with diff gearing to have reasonable clutch life to get off the mark with 30/31" tyres, but there is no 5th o/drive gear at the top end to achieve 'decent highway speeds'. Rgs, Michael |
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