sealing washers for a balanced MK111 exhaust?

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jimbo

jimbo

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Part number 06-5259 exhaust gasket for a late model 850 balanced exhaust seems to be different than the non balanced exhaust. Anyone have experience with the different types of seals? I cant remember :?

heres a listing for the balanced type

http://www.ebay.com/itm/Norton-06-5259- ... 8a&vxp=mtr

sealing washers for a balanced MK111 exhaust?
 
That's not a squash washer, it's a spherical seating washer that goes into the port. the collets fit inside the exhaust rose and mate up to it, giving a degree of movement for positioning the pipes.
sam
 
I think 06-5259 is the sealing washer as the parts list and the instructions mention no other seal. Numbers 31 and 32 are the split collets and the "spherical sealing washers"

sealing washers for a balanced MK111 exhaust?


sealing washers for a balanced MK111 exhaust?


sealing washers for a balanced MK111 exhaust?
 
No idea of the correct part number but that washer is as Trident Sam says eg the spherical seating washer, I had them on my MK2A with a balanced system. I have now gone unbalanced and have dropped the split collets but retained the spherical washers to keep the extra pipe movement which means I can keep the kickstart away from the pipe without bending the pipe or the starter.
 
www.accessnorton.com

Questions about exhaust pipes

So while shopping online today, i realized the pipes on my 73 750 are the belled MKIII style, without a cross pipe. Here's a photo of the three pieces that came out when i took it apart, the collet's i know, but whats the other part? Is it OK to use this style on a 750, with 750 nuts, and the...
www.accessnorton.com www.accessnorton.com
 
Last edited:
kommando said:
No idea of the correct part number but that washer is as Trident Sam says eg the spherical seating washer, I had them on my MK2A with a balanced system. I have now gone unbalanced and have dropped the split collets but retained the spherical washers to keep the extra pipe movement which means I can keep the kickstart away from the pipe without bending the pipe or the starter.
Click to expand...

so the ebay listing showing part number 06-5259 is the only thing I need to use to seal the exhaust pipe to the cylinder head on a balanced pipe system? Along with splits collets and short nuts?
http://www.ebay.com/itm/Norton-06-5259- ... 8a&vxp=mtr
 
jimbo said:
kommando said:
No idea of the correct part number but that washer is as Trident Sam says eg the spherical seating washer, I had them on my MK2A with a balanced system. I have now gone unbalanced and have dropped the split collets but retained the spherical washers to keep the extra pipe movement which means I can keep the kickstart away from the pipe without bending the pipe or the starter.
Click to expand...

so the ebay listing showing part number 06-5259 is the only thing I need to use to seal the exhaust pipe to the cylinder head on a balanced pipe system? Along with splits collets and short nuts?
http://www.ebay.com/itm/Norton-06-5259- ... 8a&vxp=mtr
Click to expand...

Yes, as there's no actual 'sealing washer' in the MkIII pipe-to-head joint.
 
Never had a problem with sealing using the spherical seats, if you add sealing washers the exhaust nut is using even less threads in the head increasing the risk of damaged head.
 
kommando said:
Never had a problem with sealing using the spherical seats, if you add sealing washers the exhaust nut is using even less threads in the head increasing the risk of damaged head.
Click to expand...

Using the spherical seat itself is increasing the risk of damaged head. The exhaust rose nut should support the exhaust pipe flange all around and any angle of the exhaust pipe other than perpendicular will create a partial force on the flange and therefor also on the threads :idea:
 
nortonspeed said:
Using the spherical seat itself is increasing the risk of damaged head. The exhaust rose nut should support the exhaust pipe flange all around and any angle of the exhaust pipe other than perpendicular will create a partial force on the flange and therefor also on the threads :idea:
Click to expand...


:shock: a self aligning spherical system, not self aligning :?
 
jimbo said:
where does the split collars go on this exhaust?
Click to expand...

On the nut side of the pipe flare, so the pipe is clamped between the collars and the spherical seating when the nut is tightened.
So, fit the nut to the pipe first, then fit the split collars over the flare, stepped sides facing the nut, place the spherical seating in the head recess (a little grease will hold it in position) and fit the pipe into the head.
 
L.A.B. said:
jimbo said:
where does the split collars go on this exhaust?
Click to expand...

On the nut side of the pipe flare, so the pipe is clamped between the collars and the spherical seating when the nut is tightened.
So, fit the nut to the pipe first, then fit the split collars over the flare, stepped sides facing the nut, place the spherical seating in the head recess (a little grease will hold it in position) and fit the pipe into the head.
Click to expand...
I bought pipes that have flat ends and have grooves for the collars. :shock:
 
jimbo said:
L.A.B. said:
jimbo said:
where does the split collars go on this exhaust?
Click to expand...

On the nut side of the pipe flare, so the pipe is clamped between the collars and the spherical seating when the nut is tightened.
So, fit the nut to the pipe first, then fit the split collars over the flare, stepped sides facing the nut, place the spherical seating in the head recess (a little grease will hold it in position) and fit the pipe into the head.
Click to expand...
I bought pipes that have flat ends and have grooves for the collars. :shock:
Click to expand...

For the other set of pipes you'd need to use the pre-MkIII collars and sealing washers but what's wrong with the MkIII pipe set?
 
apparently I have pre MK111 balanced pipes, that do not need spherical washers but use normal seals
 
L.A.B. said:
For the other set of pipes you'd need to use the pre-MkIII collars and sealing washers but what's wrong with the MkIII pipe set?
Click to expand...

When first posted I thought I had MK111 exhaust :shock:

But I don't :?

So know I have spherical washers coming ,as I did buy them , and cannot use them, :cry:
 
So another question, what system is better? I'm kind of liking not using the spherical washers, they seem kind of wonky
 
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