Look what I found in the shed

[Pinion]

Make sure they're the same thickness, or you'll change the squish.

Yes

[Howie]

The 2001 900SS did though.  I think the original gasket was modified due to those leaks.  Stock gasket is 4mm.

[ducpainter]

IIRC, an o-ring was added to the oil return hole to stop the leaks. I don't remember if there was a recess machined into the cylinder, or the cases.

Nick might.

[Pinion]

I've read here either ball bearing or set screw

[Pinion]

And then comes that moment.......... should I.............

Untitled by D charles, on Flickr

[greenohawk69]

Should you...put tires on? I'd say yes. Yes to doing it.

[Speeddog]

'00 900SS had an O-ring, '01 did not, pretty sure all models went without it starting around then.
There's a pocket machined in the cases for the O-ring on bikes that had them.
I think the elimination of it was a cost saving driven decision.

'00 900SS - 78610471A - with oring
'01 900SS - 78610601A -NO oring
'02 SS - 78610682A -NO  oring

Base 'gasket' is in reality a shim, sealing is achieved with Threebond sealer or similar.
One can eliminate it entirely if needed to get proper squish.

Valve cover gaskets that are the 'rubber' coated steel can be cleaned and re-used many times.
No sealer necessary.
I trash all fiber/paper valve cover gaskets I find, and replace with the rubber coated steel.

[Pinion]

Should you...put tires on? I'd say yes. Yes to doing it.

[Pinion]

'00 900SS had an O-ring, '01 did not, pretty sure all models went without it starting around then.
There's a pocket machined in the cases for the O-ring on bikes that had them.
I think the elimination of it was a cost saving driven decision.

'00 900SS - 78610471A - with oring
'01 900SS - 78610601A -NO oring
'02 SS - 78610682A -NO  oring

Base 'gasket' is in reality a shim, sealing is achieved with Threebond sealer or similar.
One can eliminate it entirely if needed to get proper squish.


Agreed on valve cover gaskets, coming from Germany. I have also read all of your posts on this subject 

Valve cover gaskets that are the 'rubber' coated steel can be cleaned and re-used many times.
No sealer necessary.
I trash all fiber/paper valve cover gaskets I find, and replace with the rubber coated steel.

[Pinion]

Last time I started effing around with my bike, this happened

Untitled by D charles, on Flickr

[Pinion]

And now I go in the other direction

Untitled by D charles, on Flickr

[Pinion]

Any outstanding opinions on clutch slave cylinders, stock one is leaking and want to do better

[ducpainter]

I like stock clutch slaves.

[koko64]

+1.

[Howie]

Unless you want to reduce effort stock is fine and can be rebuilt easily as long as the metal is good on the older slaves.

If you want reduced pull you might run into clutch drag problems since travel is reduced.  I was a Yoyodyne fan, but he no longer manufactures them.  Maybe this one?
https://monsterparts.com/products/oberon-clutch-slave-cylinder?_pos=1&_sid=6cc784c2f&_ss=r