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Rank: MSF graduate
Groups: Member
Joined: 6/7/2008
Posts: 43
Location: Delaware Ohio
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How loose can my valve clearance be on my 550? I have two valves that are .001 out of the top limit, is it worth going through the hassle of reshimming?
Mark - klx678
Delaware Ohio
1990 Kawasaki Zephyr 550 mostly stock - if I wanted faster I'd have bought faster
1995 Kawasaki KLX650 with a big bore Vulcan piston 678cc, a pipe, and Dial-A-Jet
1978 Yamaha SR500 eventually to be a 60's style flattrack look street tracker
1967or so Bultaco M27 Sherpa T - first bike I bought, 1971.
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Rank: MSF graduate
Groups: Member
Joined: 4/26/2008
Posts: 23
Location: San Francisco, CA.
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A noisy valve is a happy valve. Tight is not good. 0.10mm-.20mm intake 0.15mm-.25mm exhaust Cold engine.
GPz550 Race Bike Stuff: http://smg.photobucket.com/albums/v97/CoreyClough/Track%20Bike%202009/GPz550 Pictures of Stuff I've Done: http://smg.photobucket.com/albums/v97/CoreyClough/Coreys%20GPz550%20Pics/YouTube Videos: http://www.youtube.com/user/CoreyDSFACorey San Francisco, CA (The Straight Part)
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Rank: MSF graduate
Groups: Member
Joined: 6/7/2008
Posts: 43
Location: Delaware Ohio
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Thanks for the notes. I have the specs but was just questioning my own "wisdom" on the subject... I do not see having an exhaust and an intake valve .001" too loose as being critical. I was asking around to see what some others might think. The reason: cams have to be removed to do the adjustment - lots of work for less than half a human hair of clearance to the "safe" side, aka loose. At this point after talking with a few mechanics, one for whom I have total respect, I buttoned up the engine without the adjustment.
Mark - klx678
Delaware Ohio
1990 Kawasaki Zephyr 550 mostly stock - if I wanted faster I'd have bought faster
1995 Kawasaki KLX650 with a big bore Vulcan piston 678cc, a pipe, and Dial-A-Jet
1978 Yamaha SR500 eventually to be a 60's style flattrack look street tracker
1967or so Bultaco M27 Sherpa T - first bike I bought, 1971.
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Rank: MSF graduate
Groups: Member
Joined: 4/26/2008
Posts: 23
Location: San Francisco, CA.
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Every time I've wanted to get a little closer to the middle of the tolerance, it goes too far with one up shim change, so I just leave it when it's within specs. Getting good at valve shim replacement, but not worth the hassle.
GPz550 Race Bike Stuff: http://smg.photobucket.com/albums/v97/CoreyClough/Track%20Bike%202009/GPz550 Pictures of Stuff I've Done: http://smg.photobucket.com/albums/v97/CoreyClough/Coreys%20GPz550%20Pics/YouTube Videos: http://www.youtube.com/user/CoreyDSFACorey San Francisco, CA (The Straight Part)
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Rank: Administrator
Groups: Administration
Joined: 4/23/2008
Posts: 177
Location: Catskill Mtns.
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If you have to go one direction away from where you want to be, loose is better, especially on an exhaust valve. While this will tend to cost you some top-end power due to less time open, you'll run no risk of burning a valve or having one overheat and literally lose its head.
| 1990 Kawasaki Zephyr 615 (Daphne) -=- 1986 Kawa Ninja 250 (stolen) | | The Motorcycle Fuel Injection Handbook -=- http://tinyurl.com/297abo |
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Rank: MSF graduate
Groups: Member
Joined: 6/7/2008
Posts: 43
Location: Delaware Ohio
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Good to see you're back. I PMed you on the cam chain tensioner. I may have one more that I can finish quick. I need to make more of them. They also fit the KLX, with a different adjuster bolt. If you're doing a different application let me know what the needed length of extension inside the block to hit the cam chain tensioner shoe is and I can get the right length. The Zephyr requires a longer bolt than the KLX. I'm also planning on doing 750 tensioners too if I can.
By the way is the shock guy you told me about for redoing the stock shocks still doing it? I'm considering doing the shocks if some more tensioners sell... pays for my habits to an extent.
Mark - klx678
Delaware Ohio
1990 Kawasaki Zephyr 550 mostly stock - if I wanted faster I'd have bought faster
1995 Kawasaki KLX650 with a big bore Vulcan piston 678cc, a pipe, and Dial-A-Jet
1978 Yamaha SR500 eventually to be a 60's style flattrack look street tracker
1967or so Bultaco M27 Sherpa T - first bike I bought, 1971.
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Rank: Administrator
Groups: Administration
Joined: 4/23/2008
Posts: 177
Location: Catskill Mtns.
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I was away for a few weeks, sorry about that. I got the emails; I have a financial squeeze happening suddenly, so don't save stock for me right this minute. I'll make it happen soon, though, no worries. Your idea of a PayPal bill for me works fine on this end. AFAIK, the shock guy is still doing his magic, but is not working with a dealership in Livermore. http://www.aftershocks-suspension.com/pages/home.htm
| 1990 Kawasaki Zephyr 615 (Daphne) -=- 1986 Kawa Ninja 250 (stolen) | | The Motorcycle Fuel Injection Handbook -=- http://tinyurl.com/297abo |
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Rank: MSF graduate
Groups: Member
Joined: 6/7/2008
Posts: 43
Location: Delaware Ohio
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azraphale wrote:I was away for a few weeks, sorry about that. I got the emails; I have a financial squeeze happening suddenly, so don't save stock for me right this minute. I'll make it happen soon, though, no worries. Your idea of a PayPal bill for me works fine on this end. AFAIK, the shock guy is still doing his magic, but is not working with a dealership in Livermore. http://www.aftershocks-suspension.com/pages/home.htm Thanks.
Mark - klx678 Delaware Ohio 1990 Kawasaki Zephyr 550 mostly stock - if I wanted faster I'd have bought faster 1995 Kawasaki KLX650 with a big bore Vulcan piston 678cc, a pipe, and Dial-A-Jet 1978 Yamaha SR500 eventually to be a 60's style flattrack look street tracker 1967or so Bultaco M27 Sherpa T - first bike I bought, 1971.
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Rank: Administrator
Groups: Administration
Joined: 4/23/2008
Posts: 177
Location: Catskill Mtns.
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That should be NOW working, instead of NOT working. D'oh!  
| 1990 Kawasaki Zephyr 615 (Daphne) -=- 1986 Kawa Ninja 250 (stolen) | | The Motorcycle Fuel Injection Handbook -=- http://tinyurl.com/297abo |
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