sam ) gurgled happily, sounding much like they were
saying :

The tag on it says Austin 5HP STD

The old Morris Minor side valve 918cc motors had a 3.5" stroke. That
motor was from a Morris series which started in about 1935? and
continued till the OHV Minors were introduced in 1953. There could
have been what they classified as a Morris 8 (8hp) Morris being 800cc
motor ( or could this writing be 8 HP not the 5 HP) something to do
with road tax of the time. This would make sense.

Indeed it would make sense... but for one subtle detail...

Why would a SV Morris Minor crank be labelled "Austin"...?

Adrian wrote:
sam ) gurgled happily, sounding much like they were
saying :


The tag on it says Austin 5HP STD


The old Morris Minor side valve 918cc motors had a 3.5" stroke. That
motor was from a Morris series which started in about 1935? and
continued till the OHV Minors were introduced in 1953. There could
have been what they classified as a Morris 8 (8hp) Morris being 800cc
motor ( or could this writing be 8 HP not the 5 HP) something to do
with road tax of the time. This would make sense.


Indeed it would make sense... but for one subtle detail...

Why would a SV Morris Minor crank be labelled "Austin"...?


Cause I think Lord Nuffield in about 1953 had something to do with that.

In article
,
sam wrote:
Adrian wrote:
sam ) gurgled happily, sounding much like they were
saying :


The tag on it says Austin 5HP STD


The old Morris Minor side valve 918cc motors had a 3.5" stroke. That
motor was from a Morris series which started in about 1935? and
continued till the OHV Minors were introduced in 1953. There could
have been what they classified as a Morris 8 (8hp) Morris being 800cc
motor ( or could this writing be 8 HP not the 5 HP) something to do
with road tax of the time. This would make sense.


Indeed it would make sense... but for one subtle detail...

Why would a SV Morris Minor crank be labelled "Austin"...?


Cause I think Lord Nuffield in about 1953 had something to do with that.

Even in the '60s there were still different part numbers for identical
components shared between Austin, Morris, Riley, MG, Wolseley...

And I'm not talking engines etc where there might be slight differences,
but things like nuts and bolts. No wonder they went bust.

--
*Why is the man who invests all your money called a broker? *

Dave Plowman London SW
To e-mail, change noise into sound.

"dave sanderson" wrote in message
oups.com...

A few dimensions might help.

Overall length for a start, and some idea of the stroke, which you should
be
able to give us without unwrapping it too much.

Ron Robinson

Was just in the garage doing that...
All measurements with a ruler, so reasonably accurate, but not
precise.
Cranks is ~17" oa length. stroke is ~3.5", give or take a smidge.
Mains are ~1.75" dia, 1 3/32 wide. big ends are ~1.5"
The cylinders are on centers of: 1 and 2 ~2 9/16" 2 and 3 ~3 and 9/16
and 3 and 4 ~2 9/16" the extra inch is in the center main, not thicker
webs.
The center web has no extra past the main bearing,neither do the mains
at the ends. Ive not seen a crank like that before, usually there is
some balancing web. In Vizards TBASE the photo of the A30 crank (pg
359 in the second edition) looks similar, but the webs between 1 and 2
and 3 and 4 are to thick, and there are balancing weights, whih are
not present on the mystery item. This itself suggests to me it is a
crank for an earlier engine?

The stroke is about right for a late 1940's A40 (Devon, Dorset) but I would
expect those to have had counterweights. The lack of them would indicate
something earlier and Austin before the war did the whole range from 8hp up.
I don't know the bores and strokes of these, but I'm guessing Austin 8 or
10hp. The 12hp was 69mm bore x 100mm stroke or thereabouts so it would have
to be smaller than that.

Ron Robinson