Hi Erik,
I wish I knew a way to identify the difference between the Morris Ribcase
and the Spridget ribcase. Perhaps there is a way, but I don't know it.
Cases do have numbers, but they are all suspect because so many gearboxes
have been rebuilt and parts swapped around. Loads of the "Silver Seal"
and "Gold Seal" rebuilt gearboxes sold as Spridget boxes were in fact
made with the Morris gears inside and the resulting change of ratios.
Morris had a smooth case box for a few years that was coupled to the 1098
engine and it had the internal gear set of the Morris ribcase. This was
a baulk ring set up not to be confused with the later Bugeye smooth case
with needle bearings that had brass synchro cones.
There are at least 7 different sets of gears in the two types of
gearboxes that I'm aware of. Could be more lurking around, too! Sort of
a rebuilders nightmare!!
Paul
PAsgeirsson@juno.com
On Wed, 23 Feb 2000 19:43:52 +1100 Eriks Skinkis <eriks@netspace.net.au>
writes:
>Paul,
>
>Is there any way to externally tell the difference between a Sprite
>and
>Morris Minor gearbox? For example if you came across one at a swap
>meet how
>could you tell?
>
>Cheers,
>
>Eriks Skinkis
>
>
>
>Paul A Asgeirsson wrote:
>
>> Hi
>>
>> I'd like to make a correction on the difference between the Morris
>rib
>> case and the Spridget ribcase gearbox. On the Morris ribcase, it is
>> referred to as a wide ratio box and all the gears are evenly spaced.
>> First gear is much lower than on the Spridgets and second gear on
>the
>> Morris Rib is close the same as the Spridgets first gear. The
>Morris Rib
>> is also a bronze bushing vs the needle bearings on 2nd and 3rd
>gears.
>>
>> Now the smoothcase on all but the later sprites, they have the big
>gap
>> between 2nd and 3rd. Makes you wonder sometimes if you skipped a
>gear
>> while climbing a hill with a 948! Especially in a Morris as it
>weighs
>> about 500 lbs more than a Spridget!
>>
>> Paul
>>
>> PAsgeirsson@juno.com
>> On Sun, 20 Feb 2000 18:33:50 -0000 "rob thomas"
>> <rob@thomasr.greatxscape.net> writes:
>> >
>> >----- Original Message -----
>> >From: <Metallian6@aol.com>
>> >To: <spridgets@autox.team.net>
>> >Sent: 17 February 2000 16:23
>> >Subject: 1275cc engine questions
>> >
>> >
>> >> Hi list. Is the 1275 a very dependable engine? How dose it
>compare
>> >with
>> >the
>> >> 1098 on reliability? > Jamie
>> >> 1962 AH Sprite MK II (under restoration)
>> >>
>> >The 1275 and the later 1098 (with block numbers starting with 10CC)
>> >used
>> >larger main bearings than the earlier 1098s (10CG) and 948s. For
>> >reliability I would start with a 1275 at a low power output rather
>> >than
>> >stretching some power out of a 1098. Later 1275s with the oil
>filter
>> >above
>> >the dizzy are reputedly stiffer and less prone to vibration. Get
>> >everything
>> >statically and dynamically balanced and you are less likely to have
>it
>> >throw
>> >out a bearing. For gearboxes(Tranny) you should be certain that
>your
>> >rib-case is a Spridget one and not a Morris 1098. There is a
>> >noticeable
>> >extra space between 2nd and 3rd when you are accelerating up
>through
>> >the
>> >gears due to the selection of a closer ratio gear set in the
>Spridget.
>> >Spend the money now on cleaning the block oilways, getting it
>balanced
>> >and
>> >seal every damn gasket as well as is humanly possible ( It will
>still
>> >leak!)
>> >
>> >Good luck
>> >
>>
>> http://dl.www.juno.com/get/tagj.
>
>
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