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scott850



Joined: 30 Oct 2004
Posts: 14
Location: Gold Coast, Australia

PostPosted: Fri Nov 12, 2004 5:46 am    Post subject: Proud Father Reply with quote

OK slightly misleading subject but i have just purchased a 75 MK3 commando with 800 mile on the clock. Currently sitting beside the T160 and i am thinking of moving into the garage . Cant wipe the smile off my face Smile

Anyhow, a general question. How should you treat a bike that hasn't been run since 1976 in California. All fluids hve been changed and the original Avons will have to be replaced although they dont look too bad. Starts second kick but there is a fair amount of smoke which i am hoping is the oil put down the barrel during storage. Fingers crossed.

Left hand head pipe has no discoluration but the right is blue. right hand exhuast clamp only goes in about 3 threads and then no further so there is a problem there.

I plan to go through an intial running in period again to see how things go and pray that the internals are not as rusty as my typing.

Any thoughts ?

Scott
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Derek Wilson



Joined: 25 Jun 2004
Posts: 86
Location: The Great White North

PostPosted: Fri Nov 12, 2004 9:08 am    Post subject: Reply with quote

Hi Scott
I resurrected my '72 after sitting for 25 years. What I found was that nearly every piece of rubber on the entire bike required replacing, including the isolastics. The iso's were done in by the bike sitting on the centerstand for that long. Check the gap between the primary cover and the lefthand Z-plate, if it is running very close or rubbing (like mine was), the iso's will probably need replacement. That said, replace the obvious stuff and ride it for a bit, and see if anything else crops up.

Your smoking problem could be intake valve seals, which have dried out due to sitting. My uncle picked up a Mk 3 that sat for a while and we ended up putting valve seals in it. My '72's seals leak a bit, but it's only really noticeable when the bike has been idling for a while, sitting on the side stand. A friend of mine was actually able to change the valve seals without pulling the head. He pulled the rocker spindles and rockers, pressurized the cylinder with compressed air, and made a tool to compress the valve spring and pull the keepers.

It is adviseable to do a compression test and a cylinder leak down test to see if you can find the culprit.

Good luck,

Derek
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The Unapproachable Norton Commando

At the end of 1967 the Norton Commando was announced.

The Norton Commando was greeted with a certain amount of scepticism because on first sight the commando appeared to comprise of the old Norton Dominator twin cylinder engine mounted at an inclined angle in a set of new cylinder parts.

It was not realized that the new Norton Commando Isolastic method of engine suspension damped out all engine vibration and produced a machine which had uncanny smoothness for a vertical twin. In due course the critics were silenced and the Norton Commando had the distinction of being regarded as the first of todays so called superbikes. There can be little doubt that the original design concept of the Norton Commando has proved correct, since comparatively few modifications of any real consequence have been made since production commenced during 1968.

Now nearly 40 years later Norton Commando riders like us are a breed of our own, and as far as we are concerned its still more fun to go for a blat on the old Norton Commando, and fast. As a Norton Commando owner and enthusiast, my goal here is to promote and give credit to those who keep the Norton name going.

It is more deserving to give credit to the Commando itself, for after all these years it continues to be respected. The original Commando designers like John Favill are those who deserve the credit for developing this incredible motorcycle.

The Norton Commando Roadster and Interstate of the late seventies, never died. Although the Norton Villiers factory dispersed the tradition lived on. Today Kenny Dreer in the USA is developing the new 952 CC Norton. What a great looking bike this is, and its engineering is still based on the original layout. It will be interesting to see how the new 952CC Norton does in todays tough motorcycle market. One thing is for sure, I would own one if I could afford it.