New Clutch cover

bearings and seals appear to be the same. BUT case numbers are not the same - i don't know if case numbers changed just so they can stamp them as 2012 cases - i don't know if case numbers change each year, while still be the same.... don't know what has changed. it's possible the right case changed to accommodate possible changes with inner clutch cover, or the crankcase volume has changed (potentially smaller to deal with no stuffers?)
 
I have read somwhere that the 2013 is back to the aluminium clutchcover again..
Can some of you confirm that??

And does anyone know why they changed back, after all the hype last year about the new style cover that should increase oilflow to the chutch:confused:.
 
I took the clutch cover off of a '13 last night. Cast inside is a part number that started Mg-ME25xxxxx.

It would appear that the cover is now magnesium, while taking the shape of the pre-2012 cover. The oil directing channels from the composite cover are absent.

The issue with the 2012 composite cover seem to have been related to lack of secondary processing on the 'sealing' edge ... the sad fact is that they tended to be wavy and not to seal well. The issues were worse at operating temps.
 
Thanks for the reply, I'm shopping for a new cover, and the '12 is really cheap compared to the '13 and the pre '12 alu covers, but since I read that the '13 get the old style cover back, I wanted to check if something's wrong with the '12 cover.

And even though the old style is 4 times more expensive than the '12 cover, it'll be worth it to keep the oil INSIDE the engine:D
 
The oil grooves on the inside of the '12 cover end up in a channel (like half a pipe) protruding 7-8 millimeters into the clutch centre. I'll post a pic later, have one of those laying around.
 
Thanks bergerhag.
But I know how the cover looks inside. and I really liked the idea of that design..

Did you run your bike with the '12 cover?

And If you run it, did it leak?

the leaking problem seems to be the reason they changed back to the old style cover, but did not see any, or talk to anyone that had any problems with their '12 cover leaking:confused:..

BTW. If you just have it laying around, could I borrow it,or would you sell it to me? Just want to do some measuring on the "funnel", maybe then, I could make up a aluminium cover with the funnel feature from the '12:D
 
I did not run it on the '10 as my plan was, since it did not fit. I now have a '12, thus keeping the cover as a spare.

If you come get it you can borrow it, shipping is out of the question since the shipping costs would outweigh buying one.
 
so.. you have a '12.. did you have any problems with the cover leaking?
Where in Sweden are you located? I just might head your way some day and do some measuring, if you're not too far up north.
I just love those Swedish single track's do you have any near your place?;)
 
I live in Timraa, that's 400 km north of Stockholm. We have only rocky and muddy single tracks up here. :)

No, the '12 clutch cover is not leaking.
 
HenrikSchmidt said:
so.. you have a '12.. did you have any problems with the cover leaking?
Where in Sweden are you located? I just might head your way some day and do some measuring, if you're not too far up north.
I just love those Swedish single track's do you have any near your place?;)
Click to expand...

I had no end of dramas with my 12 clutch cover.Just could not stop it leaking.
Ended up going to a solid cover again, not sure if it is an older type or a 13 type though. My bet is that it is the older version.
Cheers Mark
 
wence said:
I had no end of dramas with my 12 clutch cover.Just could not stop it leaking.
Ended up going to a solid cover again, not sure if it is an older type or a 13 type though. My bet is that it is the older version.
Cheers Mark
Click to expand...

Check and see if the part number cast on the inside has a 'Mg' preceding it.
 
That would make it more than 1100 km from my place:eek:
Don't think that's gonna happen, but those rocky, muddy singletail's does sound tempting:D
Where did you buy your cover?
Just checked the Spanish and German sites and they are all out of stock on the '12 cover..
 
Thanks for the link. But I think I'm gonna try to find it elsewhere..

That guy is making too much money on his spares:eek:
The cover is normally prized at around 11Euro, the one on that site it's more than 2x more.:confused: He must be laughing all the way to the bank..
 
The '12 cover is fine after being lapped flat on a glass plate, along with the ignition cover. Mine weeped a little stock now no issues. That said, you have to wonder if the oil scavanging vanes on the inside were ever tested since GG was so quick to abandon them. I suspect not and that it was a "shotgun" approach to solving the problem. Honestly they can't hurt, but my older bikes with the alloy covers were just as good. I think its the basket/pressure plate more than anything. Actually they were always good until '11.
 
GMP said:
The '12 cover is fine after being lapped flat on a glass plate, along with the ignition cover. Mine weeped a little stock now no issues. That said, you have to wonder if the oil scavanging vanes on the inside were ever tested since GG was so quick to abandon them. I suspect not and that it was a "shotgun" approach to solving the problem. Honestly they can't hurt, but my older bikes with the alloy covers were just as good. I think its the basket/pressure plate more than anything. Actually they were always good until '11.
Click to expand...

Some, but not all, respond to the lapping treatment.
 
Flat is flat, so if its done right it should be good I would think. Problem is its tough plastic and a little slow to do. If you don't care about easy R&R of the cover a little Yamabond, Threebond, etc. should work good.
 
GMP said:
Flat is flat, so if its done right it should be good I would think. Problem is its tough plastic and a little slow to do. If you don't care about easy R&R of the cover a little Yamabond, Threebond, etc. should work good.
Click to expand...

Flat is flat for sure - It took an hour, but I had the entire width of the sealing surface flattened on a granite faceplate with medium and then super fine paper. It still wept between the screws. Had I wanted to put some liquid gasket on it the weaping may have subsided.
 
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