Valve Clearances

[Jimbob]

Hey guys i just checked the valve clearances on the bike they are as follows:

Left Intake: .07
Right Intake: .05
Left Exhuast: .05
Right Exhuast: .08

Should any of these be changed? i know they are withing the specifications but some say the exhuast should be a bigger gap what is the reason for this and is it necessary? Cheers

[twocool]

No!


Cookie

Hey guys i just checked the valve clearances on the bike they are as follows:

Left Intake: .07
Right Intake: .05
Left Exhuast: .05
Right Exhuast: .08

Should any of these be changed? i know they are withing the specifications but some say the exhuast should be a bigger gap what is the reason for this and is it necessary? Cheers

[gsJack]

Geez Cookie your getting kinda blunt there, I liked your kinder softer answer earlier this month much better.   

http://gstwins.com/gsboard/index.php?topic=68876.msg828707#msg828707

Jimbob, the Suzuki spec of .03-.08 mm is a bit too tight for long exhaust valve life.  One of my exhaust valves was at the minimum spec on my 97 GS and required constant shim changes and was down to a minimum 215 shim before it had 80k miles on it.

When the tighter exhaust valve on my 02 started the same pattern at about 30k miles I bumped the exhaust valve clearances up to .003-.005" (.08-.13mm) and it went over 40k more miles without a shim change.

It's not an urgent matter Jimbob, more for long exhaust valve life so if you want to brag about your 100k mile GS500 like I do you might want to loosen up a bit on the exhaust valve spec like I did. 

The whole pic in specs:

http://img.photobucket.com/albums/v443/jcp8832/GSvalvelogs_zps55f27f5e.jpg

Checked compression last year on my 02 GS and it had 140 psi on both cylinders at 100k miles. 

[twocool]

LOL...some people say I'm too wordy...trying to be succinct!

So OK...change out the left exhaust only so the gap will be .10

Boy, I wasted a lot of words typing all this....and you're gonna waste a lot of time changing shims that don't need to..

Cookie

Geez Cookie your getting kinda blunt there, I liked your kinder softer answer earlier this month much better.   

http://gstwins.com/gsboard/index.php?topic=68876.msg828707#msg828707

Jimbob, the Suzuki spec of .03-.08 mm is a bit too tight for long exhaust valve life.  One of my exhaust valves was at the minimum spec on my 97 GS and required constant shim changes and was down to a minimum 215 shim before it had 80k miles on it.

When the tighter exhaust valve on my 02 started the same pattern at about 30k miles I bumped the exhaust valve clearances up to .003-.005" (.08-.13mm) and it went over 40k more miles without a shim change.

It's not an urgent matter Jimbob, more for long exhaust valve life so if you want to brag about your 100k mile GS500 like I do you might want to loosen up a bit on the exhaust valve spec like I did. 

The whole pic in specs:

http://img.photobucket.com/albums/v443/jcp8832/GSvalvelogs_zps55f27f5e.jpg

Checked compression last year on my 02 GS and it had 140 psi on both cylinders at 100k miles.

[Jimbob]

Ok ill leave it for now and changed the exhaust to a bigger size on the next check. Cheers

[twocool]

Well...it will be a "smaller" size shim to give a larger clearance...

BTW...now that you know what you've got...you can easily order some new shims in the sizes you will need in the future...order them now...and they will be "in stock" for the next valve check....if you need to replace, you don't have to wait a few days for them to come in...


Cookie

Ok ill leave it for now and changed the exhaust to a bigger size on the next check. Cheers

[cWj]

Cue me jumping up to go look at my feeler gauges to make sure I didn't mix up all those metric and standard decimal numbers...