Doing Valve Adjustment - CAM markings? - Page 2 - ZX6R Forum
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post #16 of 27 Old 04-23-2017, 05:56 PM
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I used Hot Cams, just now. Rode it around a block, no issues. But I only needed to replace one, so I bought refill pack (5) off ebay, $8 including shipping. It was much cheaper than buying individual from the dealer. I heard some dealers would exchange them for free, I was not that lucky I guess.
In your case you seem to need to replace 12 shims, so refill packs may be your best option. Spending $80 for the whole package would probably make little sense.
Nonetheless, I would check with your local stealer first.
Good luck.
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post #17 of 27 Old 04-23-2017, 06:06 PM
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Quote:
Originally Posted by goblin View Post
I used Hot Cams, just now. Rode it around a block, no issues. But I only needed to replace one, so I bought refill pack (5) off ebay, $8 including shipping. It was much cheaper than buying individual from the dealer. I heard some dealers would exchange them for free, I was not that lucky I guess.

In your case you seem to need to replace 12 shims, so refill packs may be your best option. Spending $80 for the whole package would probably make little sense.

Nonetheless, I would check with your local stealer first.

Good luck.


My 09 zx6r 600 has 17000 on the odometer and I think I need to adjust mine. Any pointers or what should I be listening for to tell whether or not I need too? Any help would be appreciated.


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post #18 of 27 Old 04-24-2017, 08:19 AM Thread Starter
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Thank you all for the tips and help, specially RJ2112!

I just ordered Hot Cams refills for the shim sizes I need. Once they arrive I'll assemble everything, re-measure the clearances, and if all goes well, rotate the motor by hand AFTER putting the CCT back in.


I'll post back the results.
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post #19 of 27 Old 05-04-2017, 04:27 AM Thread Starter
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Hey all,

So the hotcams refill kits came in yesterday. I managed to find some time to put the new shims in and remeasure my clearances.

12 of the 16 valves were too tight. After remeasuring, all 16 are well within there averaged spec.

I did use the mirror method because I didn't want to pull the motor, and really worried the cam chain may have moved over a tooth or so.

I did make several marks to be able to put it back as it was, but still worried it may have come lose from the bottom or something.

Also I had to undo and redo the 20 bolts twice because the cct wasn't extending for some reason the first time.

TWO QUESTIONS:

1. Which way does the cct go in? The little latch thing facing up or down?

2. What's the absolute worst thing that can happen if I didn't do this right?

I did rotate the motor by hand after everything and it felt the same as before. There is a "tight spot", but it was there before I touched anything as well.

I didn't try turning it on simply because I'm scared AF.
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post #20 of 27 Old 05-04-2017, 08:31 AM
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1. The cam chain tensioner is mounted with the stopper facing upward.

2. Absolute worst thing if you did it wrong? You strike a valve with your piston and munch your top end...

Definitely double and triple check you have the timing correct. Rotating by hand is good because you should be able to tell if there are any problems. Sounds like you're probably fine.

If it's any consolation, I was nervous my first time too
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post #21 of 27 Old 05-04-2017, 11:39 AM
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Quote:
Originally Posted by MaddogZX6r View Post
My 09 zx6r 600 has 17000 on the odometer and I think I need to adjust mine. Any pointers or what should I be listening for to tell whether or not I need too? Any help would be appreciated.


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To measure, is to know. Because the clearances get smaller due to the valves pounding into the seat, there is little change in sound as the clearances go away.

the first time you will hear of a problem with the valve clearances is when you see a large amount of smoke, and lose all power.....

"Basic stuff fellas. Use your head for something other than to break your next fall."

"There's this adage that we have 2 ears and one mouth so we should listen twice as much as we talk. Unfortunately with the Internet people have taken this old adage and turned it around. They have two eyes and 10 fingers so they think they need to post 5 times as much as they read. And since they have 10 fingers and one brain, they only have to think 10% of the time! "
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post #22 of 27 Old 05-04-2017, 06:55 PM Thread Starter
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So I put everything back together and ran into a (i hope) minor problem.

One of the 6 valve cover bolts stripped while torquing down. I suspect the bolt was already in bad shape, but I never noticed. I don't have a garage so i've been working in a tiny, poorly lit shed.

Anyway... I torqued the remaining 5 down, and left the 6th one out for now. I noticed many of the bolts had marks on them, so I suspect it's been opened up several times.


I put the gas tank back on, crossed my fingers, and hit start.

It sounded pretty loud for the first few seconds (tapping), then it quieted down. The sound is a little exaggerated because of the small shed, but here's the result:




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post #23 of 27 Old 05-04-2017, 07:48 PM
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Compared to before, how is it.

Many out?
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post #24 of 27 Old 05-04-2017, 08:44 PM Thread Starter
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Compared to before, how is it.

Many out?
I haven't been able to take it for a ride as it's been raining steady and will continue to rain for the next 2-3 days.

Sound wise, it's pretty much the same as before. I can hear a little more tapping, but it could be just because it's in the shed and noise is bouncing.

I did notice when reving the motor in neutral the rpms seemed to climb with less 'resistance'. It's hard to explain.

I'll know more once I get to ride it, though I just ordered brake pads, fluid, oil and filter and the valve cover bolt that's toast. Might be a week or so before I can test ride it.

I have shitty tools and little experience working with motors. I usually just do oil and brake servicing. I found checking the valve clearance to be quite easy, but adjusting to be a pain in the ass. It's just really tight and you need good tools, patience and steady hands to get the job done. Lack of good tools results in lack patience ...Which is what was happening to be. I would have given it to a shop, but was quoted $640+tax from one shop and $720+tax canadian from another. I should have just spend that money on some really good tools.
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post #25 of 27 Old 05-05-2017, 02:56 AM
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Since it's running, great job.

I had the tools and it still wasn't easy.
Since you saved the money, go get those tools for the next project.

For not wrenching much, you did did one of the more complicated bits. Congratulations.
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post #26 of 27 Old 05-13-2017, 08:04 PM Thread Starter
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Quick update:

Brakes, oil, etc are all done. I finally had a chance to take it for a ride. Couple of things I noticed:

1. On initial cold start engine doesn't rev as high. Previously it used to reach almost 2k...not it hovers around 1.5k. I'm not sure if this is an issue or not. It idles at exactly 1k.

2. There is a little more tapping noise than before..I cannot hear it while riding. Again, not sure if it's an issue.

3. Exhaust fumes dont stink as bad or smell so strong of burnt fuel...previously used to stink up my clothes.

4. Minor hesitation at low rpms is completely gone..it's smooth through the entire rpm range.

5. Could be in my head, but acceleration feels much quicker, possibly because low rpm hesitation is gone

6. No awkward starting when engine is hot. Previously would sound like it started prematurely when restarting engine while hot.


Thank you all for your help. Unless something goes terribly wrong I'm quite happy with the results. So much so that I think I'll keep the bike for a while longer. It rides real smooth now.
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post #27 of 27 Old 05-14-2017, 04:40 AM
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You may be able to improve it a little bit more, if you can get the throttle bodies synchronized..... but it sounds like you are well within a reasonable state of tune. Idle should be higher than 1K.... I think it's meant to be ~1300 RPM when she's fully warmed up.
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"Basic stuff fellas. Use your head for something other than to break your next fall."

"There's this adage that we have 2 ears and one mouth so we should listen twice as much as we talk. Unfortunately with the Internet people have taken this old adage and turned it around. They have two eyes and 10 fingers so they think they need to post 5 times as much as they read. And since they have 10 fingers and one brain, they only have to think 10% of the time! "
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