HELP PLEASE

Hello there,

These numbers are casting numbers and in the case of the cylinder heads I believe that X20715 and X20717 are Jubilee heads. The other head is probably from a Navigator.

Measure the bore of the barrels to be certain- 60mm bore size is Jubilee-. I checked a couple of spare barrels here but the number is not clear on either of them. I was once told that a casting number commencing with 20 indicated a Jubilee part but I wouldn't want to swear to that info.

Also check that the heads and barrels match - some have spigots on the barrels and some don't.

Patrick

I have some heads if you get stuck

The heads marked 'X'(number) are for the Jubilee model.

22941rh is probably for a Navigator (not Jubilee) - but might also be for an Electra depending on a couple of points.

Separate cylinder barrels are for a Jubilee - the Navigator (& Electra) has a cylinder block.

The L/H cylinder barrel has regular finning (above the primary chaincase).

The other barrel (R/H) has the bottom fins cut away to allow for the timing cover - see photo.

As Patrick says - make sure the heads & barrels match..

The barrels should have spigots at the top, and the heads should have recesses to match.

Drop me a line at lighttwins@nortonownersclub.org for any more info.

Andy S

That is one good looking Jubilee and very much a credit to someone. Green & Dove Grey do go together so well - I wonder why Norton produced so few in these colours. Shame it isn't BRG as it would make a perfect match for my MGBs.