Removal of Exhaust Pipe on 850

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Skelly

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I have a 74 *50 Commando with a balanced exhaust sytem (cracked of course). I plan to replace current exhaust with 750 exhaust pipes. Most Nortons I've seen have have a finned type of fastner holding the exhaust pipe to the head , described in the parts manual as a exhaust lock ring.

My 850 has a smoth type of connector that has several studs around the connector that can be accessed form the front of the connector . These studs appear like they are just tightend up against the head.

In the parts manual the only difference in the 750 and 850 exhaust ( besides the balancing tube) seems to be that the connection to the head has an additional part on the 850, called a Exhaust Pipe Collets. I'm presuming that this is the round portion i'm seeing n my exhaust system. The question is how do I get them off and what purpose to they serve? Should I reuse them with the new 750 exhaust pipes I plan to install?
 
Skelly said:
My 850 has a smoth type of connector that has several studs around the connector that can be accessed form the front of the connector .
These studs appear like they are just tightened up against the head.
Click to expand...

That is some previous owners', or shop's, modifications to get the pipes to stay there.
Without removing it all, and showing us a photo, Its anyones guess what else they did to it to make it like that,
or how stock any of it is really.

Whether you keep it like that, or have it 'repaired' back to all stock components is up to you.
If it works, and doesn't bother you, I'd keep it like that.
Until it falls off, and you have to do something to it !?!
 
Skelly said:
I have a 74 *50 Commando with a balanced exhaust sytem (cracked of course). I plan to replace current exhaust with 750 exhaust pipes. Most Nortons I've seen have have a finned type of fastner holding the exhaust pipe to the head , described in the parts manual as a exhaust lock ring.

My 850 has a smoth type of connector that has several studs around the connector that can be accessed form the front of the connector . These studs appear like they are just tightend up against the head.

In the parts manual the only difference in the 750 and 850 exhaust ( besides the balancing tube) seems to be that the connection to the head has an additional part on the 850, called a Exhaust Pipe Collets. I'm presuming that this is the round portion i'm seeing n my exhaust system. The question is how do I get them off and what purpose to they serve? Should I reuse them with the new 750 exhaust pipes I plan to install?
Click to expand...
The 850 collets are in place of the flange on the 750 pipes. The cross over pipe on the 850 setup makes it impossible to slide the exhaust rings up to the head connection.
 
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