Will a Mk2 outer primary cover fit an mk3?

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contours

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I couldn't find any previous answers to this question here. I would like to remove the starter motor on my Mk3 and I assume that would leave a large gap between the inner and outer primary covers. Would a Mk2 outer primary cover fit seamlessly with my Mk3 inner cover? Or am I just naive? :lol:

Thanks in advance,
Peter
 
Unless I'm completely mistaken, no it won't fit at all.

The mk2 outer uses a single stud to hold it in, as opposed to a ton of bolts around the outside. The bolt pattern on the inner is also different, so there's a no there as well :(
 
Re: Will an Mk2 outer primary cover fit an mk3?

contours said:
I would like to remove the starter motor on my Mk3 and I assume that would leave a large gap between the inner and outer primary covers.
Click to expand...


I've read this through a few times but I still don't follow what you mean about it resulting in a"large gap" between the inner and outer primary cases?


contours said:
Would a Mk2 outer primary cover fit seamlessly with my Mk3 inner cover?
Click to expand...

No, even if they did have a similar outline, the pre-Mk3 outer primary covers are fixed to the inner by a single central nut instead of 11 peripheral screws, the pre-Mk3 covers have no provision to house the Mk3 gear change cross-shaft bush and gear pedal shaft and bush, and aren't deep enough to accommodate the Mk3's wider crankshaft and alternator assembly.
 
The mk3 crank is longer than the mk2 in order to fit the starter mechanism so that is another thing to consider.

Simpler to make a blanking plate of some kind or check the many parts suppliers as one may supply one as an after market option.

Or could you not remove the motors internal parts along with the rest of the starting assembly. Then refit the empty motor to cover the hole in the primary an give the outward appearance that it is still fitted.
 
I did much the same thing and I was totally ignorant on MKIII"s (I actually thought you could order a MKIII with no E-start and /or right side shift). Mine already had a right shift and I settled for just blanking off the offending opening on the inner cover where the starter was located.

Here is the link to my queries on the subject:

iii-clarification-convert-kick-start-t17840.html
 
Although I have a Mark 2 I think the mark 3 looks better, more aggressive. Not sure why you would want to change it.
 
No just be happy with what you have. The MK 111 looks less aggressive than any previous model because that was the intention to tone down noise/pollution etc.
 
Thank guys! I dream up these question while I'm not near the bike to be able to see the difference. All I want to do is remove the starter - I do not/cannot use it anymore since the Sprague clutch failed. It just seems superfluous now.

So some have suggested a blank. For the looks of the thing I would rather eliminate all traces of the starter motor. But I now realize that's not possible. I guess I would feel better if I just emptied it out and placed a blank in there. I considered going to a belt drive, but that would cost nearly as much as fixing the clutch. :shock:
 
Why dont you just fix the sprag? Seems like that is just as much work as all the other options...
 
Re: Will an Mk2 outer primary cover fit an mk3?

L.A.B. said:
contours said:
I would like to remove the starter motor on my Mk3 and I assume that would leave a large gap between the inner and outer primary covers.
Click to expand...


I've read this through a few times but I still don't follow what you mean about it resulting in a"large gap" between the inner and outer primary cases?
Click to expand...

The case wraps around the starter motor on the Mk3. if i removed the motor wouldn't there be an opening? I assume that is where a "blank" would fit.
 
gortnipper said:
Why dont you just fix the sprag? Seems like that is just as much work as all the other options...
Click to expand...

My wife would prefer that option. :D It was quoted at $1100 by my local shop in Brattleboro VT.
 
contours said:
gortnipper said:
Why dont you just fix the sprag? Seems like that is just as much work as all the other options...
Click to expand...

My wife would prefer that option. :D It was quoted at $1100 by my local shop in Brattleboro VT.
Click to expand...

Could you do it yourself? I think the sprag bearing is nowhere near that expensive - $125
 
Re: Will an Mk2 outer primary cover fit an mk3?

contours said:
The case wraps around the starter motor on the Mk3.
Click to expand...

No, the motor is fixed to the 'circular protrusion' on top of the inner cover by three screws (one being an outer case screw) only the starter motor drive gear pinion is 'inside' the inner primary case. If the motor is removed, a blanking plate can be fitted in place of the starter motor.
 
Re: Will an Mk2 outer primary cover fit an mk3?

L.A.B. said:
contours said:
The case wraps around the starter motor on the Mk3.
Click to expand...

No, the motor is fixed to the 'circular protrusion' on top of the inner cover by three screws (one being an outer case screw) only the starter motor drive gear pinion is 'inside' the inner primary case. If the motor is removed, a blanking plate can be fitted in place of the starter motor..
Click to expand...

Okay - that's a solution. Thank you for clarifying that.
 
gortnipper said:
contours said:
gortnipper said:
Why dont you just fix the sprag? Seems like that is just as much work as all the other options...
Click to expand...

My wife would prefer that option. :D It was quoted at $1100 by my local shop in Brattleboro VT.
Click to expand...

Could you do it yourself? I think the sprag bearing is nowhere near that expensive - $125
Click to expand...

I'm getting better with carburetors, brakes and electrical stuff. But I have avoided gears and such up to this point. I thought it was reasonable for my local guy to replace the layshaft bearing for $500+. When he quoted $1100 for the parts and labor on the Sprague clutch I figured it was also out of my league.
 
Thanks for that link to a previous thread on the subject, RennieK! I just ordered an alloy blanking plate from RGM so I suppose I will just get used to the hump on the primary cover. :roll:
 
Keep all the parts somewhere safe then in the future when your spanner using confidence improves but your legs capability to kick the bike is diminishing you can put it back and fix it so it works as it should.
 
You could always try it yourself... if you screw it up, then pay someone to fix it. :-) that's how I learned.
 
Thanks guys! I do plan on preserving the parts, yes. As for myself, I do enjoy kicking 'er over. I'll be 60 tomorrow, but am several years away from "needing" that starter. Heck, when I finally get to the point of not being able to kick start this bike I'm not sure I'll be strong enough to hold 'er up by myself.

Johnnymac said:
You could always try it yourself... if you screw it up, then pay someone to fix it. :-) that's how I learned.
Click to expand...

I will attempt to do the harder stuff eventually. Got too many other mundane type projects in line at this point in time. House renovations - that's a big one right now. When I finally take a stab at some major work on the Norton I think I'll want my plate cleared off (if that's even possible :lol: ).
 
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