ausmini :: View topic - Best diff Ratio

Expect somewhere up around $500. If you get one cheaper, let me know, PLEASE!

The 3.44 diff in mine with 12" rims is well... I hate it! Although it's the best cross between accel and cruizing, because I do heaps of HWY stuff, it's no chop. 2.9 diff me up! Next time the engine is out for any reason, a 2.9 will go in, for sure!

Brett,
All the (old) autos were 3.26:1 diff ratio, but the undergeared drop gears made it 3.76:1 overall from motor to wheels. same an a M850-Cooper 997-998, - Mini Deluxe was. :wink:

Anybody wondering, NO- the auto diff's 3.26 CW/P set will NOT fit in a manual..
Pity ain't it... :lol:

poeee wrote:

2.9 with 12" rims will be a slug off the mark, why not try a 3.2 instead. I have been looking for a while but no luck as yet.
Pete

Author:	MINIRO [ Thu Feb 23, 2006 2:59 pm ]
Post subject:	Best diff Ratio
what is the best Diff ratio for a 1275 with 10inch wheels for hwy/fwy driving? Cheers Rohan

Author:	cush [ Thu Feb 23, 2006 3:09 pm ]
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2.9 for cruizing...

Author:	MINIRO [ Fri Feb 24, 2006 11:07 am ]
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Cool, thanks champ. Are these relitively easy to come by? rough price etc etc Rohan

Author:	drmini in aust [ Fri Feb 24, 2006 12:18 pm ]
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They are rocking horse over here, unless you pull one from a Rover.

Author:	cush [ Fri Feb 24, 2006 12:38 pm ]
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give the rover lads a ring at brickworx... see what's what.. 08 82979494

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Author:	poeee [ Fri Feb 24, 2006 12:58 pm ]
Post subject:
Expect somewhere up around $500. If you get one cheaper, let me know, PLEASE! The 3.44 diff in mine with 12" rims is well... I hate it! Although it's the best cross between accel and cruizing, because I do heaps of HWY stuff, it's no chop. 2.9 diff me up! Next time the engine is out for any reason, a 2.9 will go in, for sure!

Author:	EST-071 [ Fri Feb 24, 2006 1:36 pm ]
Post subject:
poeee wrote: Expect somewhere up around $500. If you get one cheaper, let me know, PLEASE! The 3.44 diff in mine with 12" rims is well... I hate it! Although it's the best cross between accel and cruizing, because I do heaps of HWY stuff, it's no chop. 2.9 diff me up! Next time the engine is out for any reason, a 2.9 will go in, for sure! 2.9 with 12" rims will be a slug off the mark, why not try a 3.2 instead. I have been looking for a while but no luck as yet. Pete

Author:	bnicho [ Fri Feb 24, 2006 4:20 pm ]
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I know someone who MAY have a 2.9 out of an MPi Rover. He removed it to fit a 2.75! Now he can drive to Adelaide withot filling up - he has the MPi tank in one side and a Cooper S RH tank as well. But my van blows him away 0-60 sprints. The Moke has an Auto with 3.5? diff. Auto's don't have 1:1 drop gears. I calculated it out and the MOke running 185/60 R13 tyres with the auto is the equivalent of a 165/70R10 on a 3.2 diff manual Mini/Moke. So the gearing should be where i want it. The van is 3.44 and 165/70R10. To low for the highway. Maybe some day I'll fit a 3.2

Author:	drmini in aust [ Fri Feb 24, 2006 6:32 pm ]
Post subject:
Brett, All the (old) autos were 3.26:1 diff ratio, but the undergeared drop gears made it 3.76:1 overall from motor to wheels. same an a M850-Cooper 997-998, - Mini Deluxe was.

Author:	bnicho [ Fri Feb 24, 2006 8:19 pm ]
Post subject:
drmini in aust wrote: Brett, All the (old) autos were 3.26:1 diff ratio, but the undergeared drop gears made it 3.76:1 overall from motor to wheels. same an a M850-Cooper 997-998, - Mini Deluxe was. Yeah, that's the right numbers. I couldn't remember them off the top of my head. It's the same gearing in my 1275 A+ Metro box. So with the approx 10% larger rims it drops the revs about 10%. Which is what I wanted.

Author:	drmini in aust [ Fri Feb 24, 2006 8:33 pm ]
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Anybody wondering, NO- the auto diff's 3.26 CW/P set will NOT fit in a manual.. Pity ain't it...

Author:	bnicho [ Fri Feb 24, 2006 8:49 pm ]
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drmini in aust wrote: Anybody wondering, NO- the auto diff's 3.26 CW/P set will NOT fit in a manual.. Pity ain't it... And neither will the factory fitted centre oil pickup.

Author:	poeee [ Sat Feb 25, 2006 10:59 am ]
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deluxe_68 wrote: poeee wrote: Expect somewhere up around $500. If you get one cheaper, let me know, PLEASE! The 3.44 diff in mine with 12" rims is well... I hate it! Although it's the best cross between accel and cruizing, because I do heaps of HWY stuff, it's no chop. 2.9 diff me up! Next time the engine is out for any reason, a 2.9 will go in, for sure! 2.9 with 12" rims will be a slug off the mark, why not try a 3.2 instead. I have been looking for a while but no luck as yet. Pete 3600rpm @100km/h with 12" rims and 3.44 diff. As far as i'm concerned, 12" and 10" won't change it a great deal at all.

Author:	Mini Mad [ Sat Feb 25, 2006 6:17 pm ]
Post subject:
Bunch of girls, just rev the nuts off it

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Author:	drmini in aust [ Sat Feb 25, 2006 6:30 pm ]
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Actually, 1275s are bad news between 4000 and 5000 due to the crank's vibration harmonics. Like Josh said, just put a shorter diff in and rev the nuts off it.