Morris Minor Owners Club

I measured 27 degrees maximum advance, vacuum disconnected. 59.000 mls old 25D distributor.

A professional rebuilder hopefully rebuilds a distributor in accordance with the series number's specification. But we will see what the cleaned and oiled 59.000 miles old distributor measurements show!

I would like to see an thorough comparison of 1960s fuel and e10 translated into our WSM figures. So for our cars, what should for example 23 degrees at 4,400 rpm advance with 1960s fuel be with e10. RON, MON, additives etcetera.

oliver90owner wrote: ↑Fri Mar 15, 2024 5:25 pm Read the attachment. The note below it states clearly it is measured crankshaft advance, not extra crankshaft degrees.

Not so 100 % obvious to me . Note vacuum advance and "automatic" advance are stated seperatly. But thanks Oliver.

I have done similar in past but not on the morris, what advance did you get, did it match the wsm data? From memory springs used to be colour coded to change advance curve. Very different from watching it on a screen and playing with engine management on a keypad as things are now. I really enjoy t...

Many thanks for your answer Bill.

Bill, I did.

I am using high revs to check the mechanical advance. So you say the 16-19 degree at 4,400 rpm are inclusive of 6 degrees fixed advance.

A question about the ignition advance given under General Data of the Worshop Manual. I have doubts as always... I have a series 41148A distributor so I assume the figures in the middle column are applicable. Should I add the 6°fixed advance to these figures? For instance: at 4.400 r.p.m. it says 19...

Float level is set. Thanks again Stephen!

OK. Is per your previous picture I assumed it was measured between the lever and lid. When delivered new and measured there it is about 1/8" as per photo so ha correct, I thought :) However with the Burlen instructions you posted I assume it should be measured between the lid and the outer edge...

[/quote] First diagram in the link, handwritten text "Delrin needle and new geometry float"
[/quote]

Ow, see now that that is probably the steel needle with the black polymere tip I suppose that answers my question. Many thanks Stephen!

Has the delrin needle the same length as a steel one that you know. Never saw them for sale?

svenedin wrote: ↑Wed Jan 31, 2024 5:04 pm I found this which explains a bit of the history of the newer float and the adjustment:


https://mossmotors.com/media/instructions/378-470.pdf

Interesting read. I suppose it does not explain setting of the black float.

These floats are superseded by the black float with a different volume.

svenedin wrote: ↑Wed Jan 31, 2024 3:49 pm I fitted one of the black “unsinkable” stay-up floats a while back. Do you have the instructions? I have them somewhere. I used a drill bit as the correct size of metal rod for the adjustment.

Stephen

Stephen if you have instructions for the black float they are very welcome.

The white nylon SU float (AUD9202) for the later HS2 was superseded by a black float (WZX1304). As the volume of the black float is smaller and its top is different the 3.2 mm drill bit level adjustment trick does not apply. I would like to check the fuel level, and I read at sucarb.co.uk that it sh...

I had a stainless set from ESM that was embarressing loud. So I bought a second set and used the silencer as a second silencer at the rear. No boy-racer sounds now.

When referring to the original spec it's worth remembering thet would have been of 5.20/14 crossplies which are about 3% bigger than the 145/14 most people run now, the differnce between 4.22 and 3.9 is 8% so even the original cars would have been almost half way to a 3.9 diff. If you are worried a...

I did not have fuel consumption in mind. I my my opinion our cars are one of the most fuel efficient of oldtimers. It was about the health of my engine and my ears.