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RSP speedo drive (4 replies)

MGMiniman
7 years ago
MGMiniman 7 years ago
MGMiniman
7 years ago
MGMiniman 7 years ago

I believe that when John Cooper raided the Rover group parts bin to spec the RSP he specified the MG Metro power unit. Did this use the MG 3.44 diff?
If so what speedo drive was used? I am rebuilding a MG gearbox to fit my mainstream Cooper which has a 5 tooth shaft and a 17 tooth pinion gears which I believe will not give accurate readings with Mini speedos. I am using a centre speedo with 1458 TPM. Having difficulty in identifying the speedo drive gears to use. Can anybody help.

MGMiniman

DaveShreeve
7 years ago
DaveShreeve 7 years ago

Some info, and a possible source of the required info here: [URL]http://forum.minicooper.org/showthread.php?t=15633[/URL]

MGMiniman
7 years ago
MGMiniman 7 years ago

Speedo drive

Thanks useful info.

MGMiniman

mini-mender 2009
7 years ago
mini-mender 2009 7 years ago

[QUOTE=MGMiniman;140656]I believe that when John Cooper raided the Rover group parts bin to spec the RSP he specified the MG Metro power unit. Did this use the MG 3.44 diff?
If so what speedo drive was used? I am rebuilding a MG gearbox to fit my mainstream Cooper which has a 5 tooth shaft and a 17 tooth pinion gears which I believe will not give accurate readings with Mini speedos. I am using a centre speedo with 1458 TPM. Having difficulty in identifying the speedo drive gears to use. Can anybody help.[/QUOTE]

I think the RSP Cooper uses a 3.1 diff as standard , the John Cooper Kit uses a 3.44 diff , if it was changed when converted 😉 Go onto Guessworks Mini Website , there is a technical section and you can put in , diff ratio , speedo TPM , tyre size and it will calculate the correct speedo drive and pinion for you . Hope this helps 🙂

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