Light Twins

Ive recently removed the pistons from a 1960 engine. the only visable mark on the crown is a letter B. No markings to say they are a plus oversized. Anyone know what the letter B is. There is a very slight concave in the crown, is this normal.

thanks John.

Now that I have got my Jubilee engine reliably kicking over, I noticed that the pipe above the drive sprocket (see picture) is producing oil (which is now all over the patio). After some research in the Compendium) I note that this is the breather pipe on my early engine and that it should be connected to the top of the oil tank. A couple of questions:

The pipe in the photo is sheared off, can anyone confirm that part 23367 in the catalogue is the correct replacement?

Can anyone tell me if  the advertise part no 040079 oil seals are the correct cross section ones Many Thanks Duncan.

I am having a problem with oil leaking from the o rings on the inner shaft of the gear lever selector

shaft, I have changed the o rings twice it last about 20 miles then it leaks again any one got any ideas. Kind Regards Duncan.

Not sure if I dreamt this or not.  Are our spares team looking for a suitable replacement for the swinging arm bush, aka "silentbloc" bush?  I think there was some discussion as to whether or not it was the same as the heavyweight?

Any progress or should I be looking at an alternative bearing arrangement?

Hi all!

Would anyone happen to know the thread size/type for the rocker oil feed banjo bolt? I've managed to strip the thread in one of my Navi heads, so am considering a threaded insert.

Cheers,

Gez.

Dear All

I appreciate this topic comes up from time to time but my 1960 Norton Jubilee appears to be a 'wet sumper'. I have read all kinds of advice from new oil pumps to oil valves to taps on sump plugs but what does everyone think?

Hello all,

I'm probably just 'man-looking' as my wife would say, but I can't seem to find Navigator front wheel bearings in the Lightweight section of the NOC Shop.  Can anyone point me in the right direction please? Also any top tips on removing and replacing them.

Thanks, Nick.

Hello all,

Has anyone found online, or perhaps have, a rider's (owner's) manual for an Electra?  I have a '65 that I'm getting back into running condition and would like to have a manual for it as well.  I've ordered the shop/parts manual.  Thanks in advance!

David B