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Re: Series MM Questions

Posted: Sun May 20, 2018 11:31 am
by palacebear
Hi.
Answer is NO :)

Series MM with side-valve engine was replaced by split-screen Series 2 with OHV engine during 1952. Series 2 was facelifted during 1954 but retained split-screen until phased out during 1956.

If your shell still has a chassis/id plate on the bulkhead, the chassis number should tell you whether it's a Series MM shell (prefix SMM) or a Series 2 (prefix starting with F).

If it IS a Series MM shell there may, depending on it's age be a number of differences between it and earlier/later shells.

Re: Series MM Questions - Series MM vs II, "SMM" vs "F" prefixes

Posted: Fri Aug 31, 2018 1:52 pm
by JohnV
With respect, I don't think this is quite correct.

The new ID plates with F-series prefixes were introduced 1 April 1952, presumably to rationalise with the Austin system in the newly combined BMC. It started with serial # 139439, and the old Nuffield practice of allocating separate RHD and LHD sequences ended.

But the first Series II car wasn't until August 1952, at chassis # 160001. So I believe all Series II Minors should have "F" prefixes, and even some late Series MM cars as well.

best, jv.

palacebear wrote:
Sun May 20, 2018 11:31 am
If your shell still has a chassis/id plate on the bulkhead, the chassis number should tell you whether it's a Series MM shell (prefix SMM) or a Series 2 (prefix starting with F).

If it IS a Series MM shell there may, depending on it's age be a number of differences between it and earlier/later shells.

Re: Series MM Questions - Series MM vs II, "SMM" vs "F" prefixes

Posted: Fri Aug 31, 2018 4:39 pm
by palacebear
JohnV wrote:
Fri Aug 31, 2018 1:52 pm
With respect, I don't think this is quite correct.

The new ID plates with F-series prefixes were introduced 1 April 1952, presumably to rationalise with the Austin system in the newly combined BMC. It started with serial # 139439, and the old Nuffield practice of allocating separate RHD and LHD sequences ended.

But the first Series II car wasn't until August 1952, at chassis # 160001. So I believe all Series II Minors should have "F" prefixes, and even some late Series MM cars as well.

best, jv.
I think you're probably correct. I'd overlooked the 'small' fact that S-MM and S-II were built alongside each other for a few months, hence S-MM with numbers higher than 160001 would in all probability have F prefix numbers! :oops:

I've already got my new copy of Minor Matters and was fascinated by the feature on Clementine. What a great project! I wish you well with her and hope that you keep us all updated on your progress :)

Re: Series MM Questions - Series MM vs II, "SMM" vs "F" prefixes

Posted: Fri Aug 31, 2018 5:31 pm
by JohnV
Thank you for the good words! :) Clementine will be quite a project, for sure.

But, hey, everyone needs to do one ridiculously complicated, horrifyingly expensive rotisserie restoration in their life ... right?
palacebear wrote:
Fri Aug 31, 2018 4:39 pm
I've already got my new copy of Minor Matters and was fascinated by the feature on Clementine. What a great project! I wish you well with her and hope that you keep us all updated on your progress :)

Re: Series MM Questions

Posted: Fri Aug 31, 2018 8:55 pm
by firedrake1942
No dividdd into mm, early s2 and late s2

Re: Series MM Questions

Posted: Thu Sep 17, 2020 9:06 pm
by Mick Lynch
What’s people’s thoughts on these NOS rings? Salvageable?

Re: Series MM Questions

Posted: Thu Sep 17, 2020 10:08 pm
by philthehill
Only good for the scrap bin unfortunately :cry:

Re: Series MM Questions

Posted: Sat Sep 19, 2020 11:57 am
by sirrom918
I totally agree with Phil's comment. ESM can supply new piston ring sets from standard size through to +60 for the 918cc Side-Valve Series MM Minor.

https://www.morrisminorspares.com/engin ... 40-p830018