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Difference(s) in wet clutch covers?

Started by gOoIe B, August 28, 2011, 07:02:57 AM

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gOoIe B

August 28, 2011, 07:02:57 AM
In preparation for this year's round of winter mods, I have acquired a spare wet clutch cover to do some machining on for my s2r800.  When comparing the two, there is a formative discrepancy between them that I worry might affect this thing's usefulness.  It appears to be a (lack of) oil pressure galley.  Check the pic to see what I'm talking about.  I think the silver cover actually came from an older m750, but not positive.



is this going to cause any compatibility issues with my bike?  I'd prefer to know before I start... the machining... ;)

Monsterlover

#1
August 28, 2011, 06:22:18 PM
The first thing I'd like to know is what are you planning to machine?
"The Vincent was like a bullet that went straight; the Ducati is like the magic bullet in Dallas that went sideways and hit JFK and the Governor of Texas at the same time."--HST    **"A man who works with his hands is a laborer.  A man who works with his hands and his brain is a craftsman.  A man who works with his hands, brains, and heart is an artist."  -Louis Nizer**

Roaduser

#2
August 29, 2011, 02:18:27 AM
interesting... fwiw my 03m800 is like the silver one, i thought it had the same motor as the s2r800's.. ive never noticed the difference in the casting that your one has before!

gOoIe B

#3
August 29, 2011, 09:52:22 AM
I'm hoping to do a quality job of installing a sight glass in the clutch cover that will closely match the sight glasses over the cam gears.



Oughtta look quite nice being able to see everything spinning together.
(Yes, dry clutch envy)

Monsterlover

#4
August 29, 2011, 10:02:16 AM
Gotcha.

It's been done so don't be dissuaded.  There is an after market wet clutch cover for KTM 950's that has a big window in it.

If that guy can make one. . .
"The Vincent was like a bullet that went straight; the Ducati is like the magic bullet in Dallas that went sideways and hit JFK and the Governor of Texas at the same time."--HST    **"A man who works with his hands is a laborer.  A man who works with his hands and his brain is a craftsman.  A man who works with his hands, brains, and heart is an artist."  -Louis Nizer**

Roaduser

#5
August 29, 2011, 08:12:55 PM
are my eyes decieving me or are there extra holes in your front rotors?? are you planing of vynaling the top section of your forks?

its an interesting look your going for. definately something a little different and thats good!

gOoIe B

#6
August 30, 2011, 09:41:09 AM
yes, those rotors are a bit more cross-drilled than most, though not by my doing.  I've only ever seen a couple other sets like them.

I've long since finished applying vinyl to the forks, thats just an old picture.

Trying to achieve a sort of "organic" , or biomechanical theme with the bike, which should be more evident after this winter's round of mods.

So, nobody knows what the purpose of this oil passage in the clutch cover is for?  I almost want to believe that its just a sort of auxiliary oil pressure gauge port, but I'd like to know for sure that it is non-essential for my engine..

stopintime

#7
August 30, 2011, 02:51:21 PM
Maybe I'm adding to the confusion....

Workshop manual for the '06 shows a spring pressurized oil bypass valve in that excact location and direction (under the cover).
It's the part of the oil pump which is closest to the cover.

Maybe the photos aren't year-correct, but the side cover hasn't got the ridge that we in fact have on our bikes (in the manual)

I don't know if the oil pump size/shape requires the cover to have the ridge, but it might?

Only one way to find out?
252,000 km/seventeen years - loving it

2-Skinny

#8
August 30, 2011, 04:31:27 PM
Very...red...
I don't own a Ducati...but I wrench on one.

gOoIe B

#9
August 30, 2011, 06:21:39 PM
Quote from: stopintime on August 30, 2011, 02:51:21 PM
Maybe I'm adding to the confusion....

Workshop manual for the '06 shows a spring pressurized oil bypass valve in that excact location and direction (under the cover).
It's the part of the oil pump which is closest to the cover.

Maybe the photos aren't year-correct, but the side cover hasn't got the ridge that we in fact have on our bikes (in the manual)

I don't know if the oil pump size/shape requires the cover to have the ridge, but it might?

Only one way to find out?

I noticed this too, and I agree that it didn't help much with my confusion.  hmm...

I suppose I might just swap the clutch covers and ride around a bit to make sure everything works nice.  Perhaps that is the only way to know for sure.

gOoIe B

#10
August 30, 2011, 06:25:00 PM
Quote from: 2-Skinny on August 30, 2011, 04:31:27 PM
Very...red...

very black, too.

I will be changing it up a little bit more this winter though.  :)

Speeddog

#11
August 30, 2011, 09:50:53 PM
I think the different styles of cover are just different manufacturing methods of achieving the same function.

Haven't had both styles in my hands at the same time to figure 'em out, though.

The gallery in question supplies oil (eventually) to the left side crankcase.
- - - - - Valley Desmo Service - - - - -
Reseda, CA
(951) 640-8908

~~~ "We've rearranged the deck chairs, refilled the champagne glasses, and the band sounds great. This is fine." - Alberto Puig ~~~

Roaduser

#12
August 30, 2011, 11:06:49 PM
i recall an issue being discussed where the oil pressure at the sensor was exceeding the limits of the switch and causing leaks/failures. maybe this was a bypass to limit the pressure at the switch and rectify this problem in the later models.

in which case, considering mine and many others have survived, i think you would be unlucky to have issues by changing to the earlier design...

DISCLAIMER: my memory may not be correct, can anyone support this?
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