Valve Adjust Worksheet

[mostrobelle]

No worries, mang...it's not like I was really emotionally invested in this thread.     Carry on.  The discussion is interesting. 

[DanTheMan]

So do the buckets just sit on top of the valve? And changing shims, you have to yank the cams?

What is the screw and nut type called? And why cant they all be like that?

[Speeddog]

So do the buckets just sit on top of the valve? And changing shims, you have to yank the cams?

Yep, the bucket sits on top of the valve.

If it's a shim over bucket, sometimes you can push down on the bucket with a special tool, fish the shim out and replace.

Shim under bucket, you definitely need to pull the cams.


What is the screw and nut type called?

The screw and nut type are used on rocker-arm motors, they're termed lash adjusters (at least that's what I call em).


And why cant they all be like that?

Depends how the manufacturer likes to do it, and to some extent what's required of the motor.

[mostrobelle]

uh oh...I think that the FZR is shim UNDER bucket.  I've been reading online...have heard rumors about practically pulling the engine to do the valves.  That might be why.  Ugh. 

[Spidey]

What is the screw and nut type called? And why cant they all be like that?

Cuz they require more frequent adjustment.

I love how everyone complains about Duc valves when doing valves on any bike is a PITA.  The only thing about a Duc is the frequency.  And once the engine on a Duc is broken in, you're more likely to be checking valves than actually changing out shims. 

[Popeye the Sailor]

Cuz they require more frequent adjustment.

I love how everyone complains about Duc valves when doing valves on any bike is a PITA. 

*Ahem* Boxer. 

The only thing about a Duc is the frequency.  And once the engine on a Duc is broken in, you're more likely to be checking valves than actually changing out shims. 

Because that's not a pain in the ass? Current bike I'm in the market for has a scheduled valve adjustment every 26K. That's more like it.

[Speeddog]

Current bike I'm in the market for has a scheduled valve adjustment every 26K. That's more like it.

That's the benefit you get from settling for a lesser machine.

[Popeye the Sailor]

That's the benefit you get from settling for a lesser machine.

Tell me that again when i'm on the road while you adjust your valves 

[Spidey]

Because that's not a pain in the ass? Current bike I'm in the market for has a scheduled valve adjustment every 26K. That's more like it.

Of course that's a PITA.  I was talking about how the masses think that Ducs need valve checks and other bikes don't.  And how people talk about how difficult and involved valve checks are on a Duc when they are on most bikes. 

Jeebus, are you about to become one of those annoying BMW converts?     Yes, BMWs are fine machines, and Ducs are ridiculous and only retards ride them.

[Popeye the Sailor]

Of course that's a PITA.  I was talking about how the masses think that Ducs need valve checks and other bikes don't.  And how people talk about how difficult and involved valve checks are on a Duc when they are on most bikes. 

Jeebus, are you about to become one of those annoying BMW converts?     Yes, BMWs are fine machines, and Ducs are ridiculous and only retards ride them.

I'm buying a 250cc yamaha, so, no.