Classic cars forum & vehicle restoration.

[Rick]

Hello all

I'm just cleaning up the carb of the 32 Morris, it has a small SU in the typical Morris fashion. I've not had a carb this early before - I removed the dashpot and piston but noticed that :-

a. there is no spring on the piston (correct? or is it missing?)
b. it doesn't have a damper attached to the removable (brass) cap, that goes down inside the piston into the damping oil, like on later SUs

Are these normal features of a 30s SU? the carb doesn't look like it has been apart or messed with in recent times, but I just want to check that its ok and all there?!?

Somewhere I've a Burlen catalogue that might shed light on things, but I thought I'd run it by everyone here, in case anyone knows??

ta
R
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[Phil - Nottingham]

Quite a few pre-war SU carbs as with Morris just had a plain cap and no damper as with my 1939 Rover 16.

My 16 does have a piston spring - the piston is horizontal as its a down draft carb.

Nothing is listed for a spring in the Morris either - if its a side draft it may not have had one
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Rover P2
Rover P4
Rover P5 & P5B
Land Rover S2 & S3
Morris Mini Traveller Mk2

[Penman]

hi
That is interesting as there is no mention here about springless ones, http://en.wikipedia.org/wiki/SU_carburetor however there is an explanation about how to identify the type and a link (not functioning for me) to the Burlen site.
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Bristols should always come in pairs.

Any 2 from:-
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[Rick]

[Roverron]

Can't remember about the damper on the cap, but the early 30s SU carbs had 'use bicycle oil' stamped on the cap.
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To Hell with ambition, it drives a man mad, I can scarcely wake up to be fed.

[Phil - Nottingham]

Correct! I have just looked mone says that and it has specially machined slot for a coin - old penny?
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Rover P2
Rover P4
Rover P5 & P5B
Land Rover S2 & S3
Morris Mini Traveller Mk2

[Rick]

[Phil - Nottingham]

Morris are lesser cars than Rovers
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Rover P2
Rover P4
Rover P5 & P5B
Land Rover S2 & S3
Morris Mini Traveller Mk2

[ukdave2002]

Rick

When I get in the office tommorow I'll mail you a illustarted scan of the carburettter components from the Morris parts manual. You are right it has neither a spring or damper.
For info the later H1 which were fitted to the morris 8's have a damper but no spring

Dave

[Rick]

[Roverron]

Rovers are better than Morris
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To Hell with ambition, it drives a man mad, I can scarcely wake up to be fed.

[Rick]

grrrrrrrrrrrrrrrrrrrrr















R
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Home:https://www.oldclassiccar.co.uk
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[Rick]

[mid]

the su site has exploded diagrams for some of its carbs.... this is the one from my 33 morris 10-4

http://www.sucarb.co.uk/ExplodedImageClassic.aspx?pumpsearch=&ProductId=11996

no spring and no damper.... also no flange to attach an air filter!

[Rick]