hi all my ADR runs a morris 1000 rear axle with a 3.7 ratio. i believe this is the highest gearing ratio they do! does anyone know a solution to get me somewhere nearer 3.2 or 3.3 as it will be very low geared with the 3.7? cheers
The rear axles on AH Sprites, MG Midgets, Minor 1000, A35 and A40 are the same except for ratio.
AH Sprite & Midget 4.22:1 (9/38)
Minor 1000 (948cc) 4.55:1 (9/41)
Minor 1000 (1098) 4.22:1 (9/38)
Austin A35, A40 948 4.55:1
Austin A35, A40 1098 4.55:1
Maybe the Minor van has an even higher ratio?
But you sound like you want to go the other way.....
[Edited on 13/8/13 by minitici]
Moss Europe lists a 3.55 gear set, but at a rather steep price. You could try increasing the rear tire diameter, but i would assume it would foul the rear bodywork and upset the suspension geometry.
im on 200/55/13 slicks at moment!
It is actually an Austin A series axle, the Morris Minor only got it when it got the Austin OHV A series engine and gearbox.
As the fastest things it was ever fitted to were the MGA Twin Cam and the first years production of the MGB you aren't going to find a longer
final drive ratio.
Marina axles are different again, the Marina used a Triumph axle
Just to be an anorak, the A-series axle was never fitted to the MGA's and early B's. It was used in various widths in: Austin A30, A35,
A40 Farina, Morris Minor, AH Sprites, MG Midgets, and some of the smaller live axled limited production cars (early Ginetta G4 for example).
The A's and B's had a similar but larger axle, which was used in the A's, B's, Austin A50, A55 etc. Later B's went to a
"tube" style axle similar to the Ford Atlas axle (but in no way related).
I believe that the 1500 wolsey diff can be used this was a replacement in the Moggie axle I also think that the marina axle was a popular transplant the 1500 wolsey was used as a replacement in the a35's a4o's etc. The midget diff was also used more because it had hardened shafts the standard Austin shafts tended to break whan power was put through them. I ran a couple of A35's for a while
Yes, the Wolsely 1500 and Riley 1.5 had the same axle as the late Minors. The Buckler 15 that i have the remains to had a Riley 1.5 axle with it (unforunately i was put in the skip when the shop i used to work at decided to clean up). The wee off it the fact that the axle had a set of Dufor axles in it which were supposedly superior to the standard BMC items.
My 61 Sprite powered with a Volvo P1800 engine and transmission had a Riley 1.5 crown and pinion, fits in the Minor, Sprite diff housing.
I knew the subject of the Riley 1.5 final drive would come up, no it is not a longer ratio than 3.77 --- the Riley 1.5 and Wolseley 1500
could just manage to approach 80 mph going down hill with the engine buzzing away at 5,000+ RPM ---- and that is with the standard 14"
high profile tyres.
The existing 3.77 diff is rare enough (fitted to only some 78 on Midget 1500) to be quite valuable.
The Marina axle has a different PCD -- ie same as Triumph Toledo & Herald.
I think you'll end up changing the axle, minor has too few options IMHO.
It's certainly possible to get longer ratio's in the Marina axle, and for definate a later TR7 auto (maybe a TR7 auto diff will fit in a
Marina axle?) would fit the bill ratio wise, but would probably need narrowing a bit?
Or perhaps the ford atlas would fit the bill as the early caori's were 3.1 ish I think?
Have you been onto the Morris Minor owners club, seem to be a helpful bunch?
quote:
Originally posted by JimSpencer
Or perhaps the ford atlas would fit the bill as the early caori's were 3.1 ish I think?
quote:
Originally posted by MikeRJ
quote:
Originally posted by JimSpencer
Or perhaps the ford atlas would fit the bill as the early caori's were 3.1 ish I think?
I suspect the Atlas weighs about double the Minor axle!
The Marina automatic had a 3.27 diff - it's been used in Moggie Minors with engine conversions.
quote:
Originally posted by inkafone
The Marina automatic had a 3.27 diff - it's been used in Moggie Minors with engine conversions.
I've got a spare 3.27 GT6 diff sitting in my pile-o-bits, downside is I'm on the wetcoast of Canada.
ill give you 28p including delivery
As BT said, there is nothing longer than a 3.7 ratio for that axle.
And the 3.7 is quite sought after... I'm after one myself for my Midget.
DH2