600 miles valve adjustment, I want to ride this weekend.

[andrewsw]

They close up? I thought they would tend to get more loose?

on the B4's and I would assume most other bikes, the valves get tighter as they wear. The valve is harder than the valve seat, so the valve wears into the valve seat causing the stem to stick out farther and the gap between top of valve stem and cam to get tighter. (or maybe the valve seat is harder than the valve, so the valve gradually gets thinner. either way, it makes the valve stem ride higher).

I think.

[lucas]

They close up? I thought they would tend to get more loose?

on the B4's and I would assume most other bikes, the valves get tighter as they wear. The valve is harder than the valve seat, so the valve wears into the valve seat causing the stem to stick out farther and the gap between top of valve stem and cam to get tighter. (or maybe the valve seat is harder than the valve, so the valve gradually gets thinner. either way, it makes the valve stem ride higher).

I think.

Look at this post: http://forums.banditalley.net/viewtopic.php?t=3713&highlight=valve+adjustment

Although there seems to be some difference of opinion on the point I would say the consenses is that they get tighter and therefore burn.

Lucas

Lucas

[Daytona]

="lucas"]

="lucas"]Hi,They close up, not get loose!!! [/b][/i][/color] :

They close up? I thought they would tend to get more loose? When their too tight they can burn up right?Also, I am a commuter and I have never even had the engine past about 5k RPM. I would think that not pushing the motor too hard would extend the time period for valve adjustments.   Lucas

I guess babyin it may be easier on the eng wear? The most important thing i think is change the oil and use a multi vis that gets to the cam/valve train in a hurry! 20w50 in cold weather won't. If it starts to act sluggish in very hot temps or acts any diff in hotter than normal, stuck in traffic, piddling in garage with no fan cooling eng! guess what to little clearance! Once you do the adj (adj to most) you will hear the tapping of em! The valve is actually seating deeper in the seat that's why the get tight!  

[Bazza]

="lucas"]Hi,

They close up, not get loose!!! [/b][/i][/color] :

They close up? I thought they would tend to get more loose? When their too tight they can burn up right?

Also, I am a commuter and I have never even had the engine past about 5k RPM. I would think that not pushing the motor too hard would extend the time period for valve adjustments.  

Lucas

Your valves will 9/10 tighten as they wear into the valve seats. A valve with a slightly loose tollerance will just aggrivate you, while one which is too tight in tolerance will lead to engine damage, as the valve will not fully close.

I have always set my valves on the loose side of the recomended tollerances.

But the 1st valve adjustment on the Bandit is the most critical, as the 1st 600 miles is where most of the "seating" occurs. After the 1st adjustment, you will rarely find a valve which is out of spec much.

[fake]

I waited and did mine at 1,200 mi.  I did them myself too.  Only three valves needed adjustment.

[lucas]

[/quote]Your valves will 9/10 tighten as they wear into the valve seats.[/quote]

I don't understand what you mean by 9/10 tighten.  

Thanks

[Daytona]

Let me guess!!   9 out of 10 times ???

[Daytona]

The only way they will get loose is if the adjuster left a nut loose! Or you are using crappy, fuel deluted, or some sythetic type, oil!  

[Red01]

On newer engines they get tighter because the valves are wearing into the seats.

As the engine racks up serious miles, wear may occur on the adjusters or valve stem tips, this will cause them to get loose.

The air-oil cooled Bandits (and other engines of the SACS family, like GSX-F Katanas, early GSXR, GSX11G) tend to hold valve adjustment very well after the 15,000 mile point.