When To Adjust Valves? - Wrist Twisters
 
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post #1 of 17 Old 12-01-2008, 12:19 PM Thread Starter
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When To Adjust Valves?

I've been searching the forum trying to find when I should adjust the valves on my 919. If I recall correctly, the manual says at 16,000. Well, I'm past that, but not quite to 20,000 and am pretty sure it has not been done.

Should I pull the head just to check? Leave it alone and wait for it to 'tell me' it's ready for an adjustment? It's winter, the bike's stuck in the garage, and if there is ever a time to do something, the next few months will be it. Once spring comes, I'm not going to want to do anything to it unless absolutely necessary.

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post #2 of 17 Old 12-01-2008, 01:49 PM
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Murph pull the cover and check your lash now since the bike is parked.

If its ok than power to you at least you know.

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post #3 of 17 Old 12-01-2008, 01:51 PM
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Quote:
Originally Posted by riquefied919 View Post
Murph pull the cover and check your lash now since the bike is parked.
+1. Checking doesn't take a whole lot of work. If you have to adjust then you have to pull the cams, but checking clearance is " fairly" easy.

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post #4 of 17 Old 12-01-2008, 01:55 PM
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How can you possibly tell if by ear if the gap has increased by 1 or 2 thousands?

Winter is a good time to check the tolerances. For piece of mind I would do it!

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post #5 of 17 Old 12-01-2008, 01:55 PM
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How is it going to tell you if the valves are out? If the valves are loose, you will hear acking - but loose valves aren't that harmful, compared to tight valves. If the valves are tight, they'll be perfectly silent until they tell you there's something wrong by trashing your top end.

We used to work on 5-valve Yamaha motorcycles and snowmobiles at the shop, and it was amazing how many people simply refused to pay for a valve adjustment (it wasn't cheap). They would throw $5000 turbos on their sleds (300 hp + snowmobiles are nothing around here) and then tell us that there was nothing wrong with their valves, because they can't hear any clicking, so they weren't going to pay for a valve adjustment. Or we would do the adjustment, tell them everything was fine, and then they would say, "Why the hell did you do it, if there's nothing wrong?"

People are getting spoiled by low-maintenance engines, like the 919's. You can get away with putting off routine maintenance, like valve adjustment, for a long time. But valve adjustment does affect performance (if you think about it, valve clearance can even affect valve timing) and why assume that your valves are fine because they sound good? If you're right, you saved a couple hours of work; if you are wrong, you will be spending a lot more time and money.

Having said all that, there are people who have put a ton of miles on a 919 engine without touching the valves. It's probably not a great risk but I am not going to take it. Once my odometer gets close to the recommended mileage I will tear into the top end.

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post #6 of 17 Old 12-01-2008, 03:01 PM
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Check them at least once. Its an hour or two of your time and your not riding anyway. If they are off then you saved yourself alot of money/heart ach down the road. If their good....great.

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post #7 of 17 Old 12-01-2008, 07:17 PM
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The re-installation of the valve cover goes much easier when you install a set of my PAIRS blockoff plates!

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post #8 of 17 Old 12-01-2008, 07:55 PM
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I love your block-off's...have a set myself.....BUT that's just shameless!!! LOL






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post #9 of 17 Old 12-01-2008, 08:58 PM
 
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Check out this thread:https://www.wristtwisters.com/forum/s...lve+adjustment

I checked them at 22k, checked and adjusted at 33k, and will check them again in three weeks.

Honda knows best, and they recommend checking them every 16k miles.

FWIW, I'll post a step by step how-to with pictures, so if you haven't done a shim type adjustment, it might help a bit.

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post #10 of 17 Old 12-02-2008, 03:25 AM
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Quote:
Originally Posted by mntnceguy View Post
I love your block-off's...have a set myself.....BUT that's just shameless!!! LOL

Maybe so, but that's why I made 'em in the first place. Removing the valve cover with all that bric-a-brac was much more difficult than the re-install with the plates.
Besides, its winter and this is when we need to tinker!

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post #11 of 17 Old 12-02-2008, 04:29 AM Thread Starter
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Quote:
Originally Posted by MisterMike View Post
How can you possibly tell if by ear if the gap has increased by 1 or 2 thousands?
Quote:
Originally Posted by prtsimmons View Post
How is it going to tell you if the valves are out?
I was pretty sure that there was not way to tell, but I was reading in another thread about letting them go for a loooooong time. Also, it is a Honda, she tells me things, whispers in my ear, you know... With all the knowledge in this forum, I thought it would be a good idea to ask since I didn't know.

Semi-Gray, I do want to get your block-off plates before I do the job. I'll PM you about it later.

Thanks for the responses.

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post #12 of 17 Old 12-02-2008, 04:31 AM Thread Starter
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Quote:
Originally Posted by mntnceguy View Post
I love your block-off's...have a set myself.....BUT that's just shameless!!! LOL

Not shamless... I had already PM'ed him about them a couple of weeks ago and just haven't gotten around to it.

Semi, Are you anywhere near shaumburg, itasca, or Elk grove?

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post #13 of 17 Old 12-02-2008, 05:08 AM
 
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if you could let us know when you post the step by step instructions it would be great, because i'm sure that i need to do it, just dont have the cash right now "holidays" to pay the mechanic for the job. thanks in advance

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post #14 of 17 Old 12-02-2008, 05:13 AM
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Quote:
Originally Posted by Sokali View Post
Check out this thread:https://www.wristtwisters.com/forum/s...lve+adjustment

I checked them at 22k, checked and adjusted at 33k, and will check them again in three weeks.

Honda knows best, and they recommend checking them every 16k miles.

FWIW, I'll post a step by step how-to with pictures, so if you haven't done a shim type adjustment, it might help a bit.
So....did they need adjustments at 22k AND 33K? I could understand the possibility of a first initial adjustment but a second one too? I will have mine checked at 10K and won't bother with it anymore. Anyway, let us know what you find.Anybody else here have PERSONAL EXPERIENCE (not hear-say) with their valve adjustment results?

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post #15 of 17 Old 12-02-2008, 05:41 AM
 
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Quote:
Originally Posted by Sokali View Post
I checked them at 22k, checked and adjusted at 33k, and will check them again in three weeks.

Honda knows best, and they recommend checking them every 16k miles.
Quote:
Originally Posted by mylifeon2wheels View Post
So....did they need adjustments at 22k AND 33K? I could understand the possibility of a first initial adjustment but a second one too? I will have mine checked at 10K and won't bother with it anymore.
I'm at 48k right now; only a thousand off the Honda recommendation of 16k miles.

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post #16 of 17 Old 12-02-2008, 08:09 AM
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Quote:
Originally Posted by cmurphy84 View Post
Semi, Are you anywhere near shaumburg, itasca, or Elk grove?
I work in the Skokie/Niles area. My son lives in Arlington Heights and I was planning to make a trip out there after work Wednesday or Thursday, so perhaps....
But, that's not anywhere near "Western KY"!

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post #17 of 17 Old 12-02-2008, 10:56 AM Thread Starter
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I take care of the IT needs in all our plants and we have two in Chicagoland. One is in Elk Grove, the other is in Bedford Park. I'm up there a week or two at a time every 2 - 3 months. I'd like to drag my 919 up there on one of my summer trips because there is lots of downtime after work. When I'm up there I usually go in early (because I always sleep like crap in hotels) and get off early so I get bored. Last time I took my PS3.

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