cheers guys, thats good news,
lol i run a rover speedo anyway and when im doing 100 it says im doing 130 so i dont really use it
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| late model diff ratio https://www.ausmini.com/forums/viewtopic.php?f=5&t=61254 |
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| Author: | meeni [ Sun Feb 21, 2010 6:47 pm ] |
| Post subject: | late model diff ratio |
i believe i may be buying a late model 1275 for meeni, its an efi engine im told, what diff ratio do they run? what sort of freeway rev's will i be looking at, i run 10's with fairly chunky rubber on them.. i dont like an over revving car on the highway. |
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| Author: | blue_deluxe [ Sun Feb 21, 2010 6:52 pm ] |
| Post subject: | |
The sportpacks came with a 2.7, but its more likely to be a 3.1, pretty sure the 12 inch cars got those. |
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| Author: | meeni [ Sun Feb 21, 2010 6:55 pm ] |
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cool, what does that equaint to in speed v's revs for 10's? |
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| Author: | EST-071 [ Sun Feb 21, 2010 6:58 pm ] |
| Post subject: | |
I you know the engine number you can work it out on the following site http://www.guess-works.com/Gearbox/Technical/engine.htm If not read through the links on the above page, you will find the info you are after. Also has a good ratio calculator http://www.guess-works.com/Gearbox/Technical/ratio.htm Cheers Pete P.S I have a 3.1 in my SPI with 12's and it is around 3500 at 110km/h. |
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| Author: | blue_deluxe [ Sun Feb 21, 2010 7:03 pm ] |
| Post subject: | |
This is the site i couldnt find before http://www.guess-works.com/Gearbox/Technical/ratio.htm Everything you need. |
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| Author: | 74snail [ Sun Feb 21, 2010 7:04 pm ] |
| Post subject: | |
The Rover 3.1:1 ratio is a good hwy ratio, good on fuel too for longer distances, it you use it regularly in traffic it will be a little slower off the line, also you will need to recalibrate the speedo if the one you use now suits a 3.44:1 ratio . |
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| Author: | meeni [ Sun Feb 21, 2010 7:06 pm ] |
| Post subject: | |
cheers guys, thats good news, lol i run a rover speedo anyway and when im doing 100 it says im doing 130 so i dont really use it
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| Author: | Asphalt [ Sun Feb 21, 2010 11:18 pm ] |
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Some of the Single point injection engines/gearboxes got a 3,21  Now that's a mighty fine diff ration with 10" wheels
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| Author: | Harley [ Mon Feb 22, 2010 6:59 am ] |
| Post subject: | |
Generally (not always) the injected engines ran a 3.1:1 diff, it was in 97 when the engines changed to MPI they dropped the ratio again to 2.7 something. That's part of why when you compare the 0-100 times for a SPI vs MPI they're virtually the same. The MPI engine would ordinarily have more power, but it's lost in the gearbox. What the japanese late model engines had I don't know. Probably should check one day. 
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