Valve adjustment necessary at 51000 miles?


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browndogg
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Valve adjustment necessary at 51000 miles?

Post by browndogg »



Bike needs to go in for oil change and air filter,dealer wants to do valve check,I know its not cheap.Just wondering if its worth it.Bike runs fine.Thanks.


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keithg64
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Re: Valve adjustment necessary at 51000 miles?

Post by keithg64 »

browndogg wrote: Sun Feb 02, 2020 1:51 pm Bike needs to go in for oil change and air filter,dealer wants to do valve check,I know its not cheap.Just wondering if its worth it.Bike runs fine.Thanks.
You could do it for the peace of mind and it's likely that if its running fine there will be no adjustment. My 07 has 71k miles and I'm going to check them myself and expecting the valves to be good. Again for the peice of mind. But I'm interested in what others say too.
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Re: Valve adjustment necessary at 51000 miles?

Post by MikeB »

For peace of mind it is a good idea to have the clearances checked.
I had done it twice on the 2003 I sold last December and no adjustment was necessary at 58,668 and 97,375 miles.
I recently sold that bike with 117,000 miles on it.

On my friends 2003 with 67,684 miles, I had to adjust the clearance on 8 of the 12 valves. To my knowledge the clearances had never been checked. They were not out much, but they were out of tolerance on the tight side. Tolerance is Exhaust .009" +/- .001" Intake .006" +/- .001". None were loose, just tight.

The thing is, the valve train does not make noise when it needs adjusting. Valve seat, valve stem, cam and shim wear makes the train tight instead of loose.

It is expensive because there is a bit of labor involved to do the tear down and inspection and a bit more to do an adjustment if necessary. The engine needs to be stone cold so it has to be left at the shop so it is cold when the process is started.
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Snowmoer
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Re: Valve adjustment necessary at 51000 miles?

Post by Snowmoer »

It would be a good idea to get it done. I did mine at 32K. I did them myself. All the valves were within spec, but a few were close to being out. I now have a baseline to see what they look like at 64K.
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Re: Valve adjustment necessary at 51000 miles?

Post by joeincalif »

Most that have it done say no adjustments were required. It is a good idea to have it checked at least once. If you want to save a little have the dealer check the valves and do the oil and air filter change yourself.
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Re: Valve adjustment necessary at 51000 miles?

Post by GoldWingrGreg »

If you want a snappier throttle, quicker starts, smoother running, and possibly better mpg, it needs done every 32k.
browndogg
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Re: Valve adjustment necessary at 51000 miles?

Post by browndogg »

Will do....Thanks.....
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keithg64
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Re: Valve adjustment necessary at 51000 miles?

Post by keithg64 »

I checked mine last week and they are all in tolerance with 71k miles. Now I have a baseline also. I'll check again in 2 years and see if it has changed. That will be another 30k miles later. It was not a hard job at all. I did replace the valve cover gaskets too.
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Road Ranger
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Re: Valve adjustment necessary at 51000 miles?

Post by Road Ranger »

I would suggest that you wait until the Honda recommended service mileage to have them checked as I have found that certain dealers use this ploy to get extra dollars for work not done, I have a friend that asked how often I checked my valves and I told him every 32,000 like Honda recommended he said the local dealer suggested that it be done every 2 years even though the bike might only get 3 to 5 thousand miles a yeat . So the next time it went in we marked the valve covers and chain covers, took pictures and sent it to the dealer. Guess what buddy got a call bike was done, valves checked and all was good. Went to pick up bike and asked dealer to follow us to bike the valve covers were never off therefore the valves were not checked, buddy got the service for free and never went back. If your bike was checked at 32,000 then wait till 64,000 did mine twice and no adjustment was needed.
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jimm4
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Re: Valve adjustment necessary at 51000 miles?

Post by jimm4 »

a crack in trans cover something flew up from road and hit it so while down for repair at 72000 i decided to check valves all intakes are on side of tight .005--- 1 wont go in at 005 so waiting on shim kit to adjust them . they are a tight 005 so going to loosten all up a little !!
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Re: Valve adjustment necessary at 51000 miles?

Post by AZgl1800 »

It is very doubtful that an 1800 will need Valve lash adjustments before 100k miles.
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jimm4
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Re: Valve adjustment necessary at 51000 miles?

Post by jimm4 »

well mine does. i have kept oil changed and all looks good inside just too tight !!
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Re: Valve adjustment necessary at 51000 miles?

Post by jimm4 »

ofcourse i should add may have been that way from factory it is first time they have been checked
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Re: Valve adjustment necessary at 51000 miles?

Post by DenverWinger »

Probably was a little tighter from the factory, these loosen with time and miles...
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Re: Valve adjustment necessary at 51000 miles?

Post by joecoolsuncle »

first sign of tight valves is it takes a few milliseconds longer to start when cold (cold being next morning even if its 90F) .intake valves hammering into the seats is the cause.
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jimm4
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Re: Valve adjustment necessary at 51000 miles?

Post by jimm4 »

i was noticing a hesation about 45-50 when twisting throttle comming out of corners and have floated valves a few times so hoping this takes care of that.thus the reasons for checking trans cover just gave oppertunity
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Re: Valve adjustment necessary at 51000 miles?

Post by AZgl1800 »

my 2002 had 97k miles on the odometer when I bought it.

the PO's records given to me, stated that he had run the valve lash:
Miles > 32,000 11/25/2004 32,000 mile service done, valves, plugs, oil/filter change

They have not been looked at since then, I gave it to my son in August 2021 with 118k miles on it, the valve lash still sounded the same then, as it did when I acquired....

Dave Ogden, a top rated Honda M/C mechanic inspected it in 8/2021 and said they are fine, leave it alone.
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jimm4
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Re: Valve adjustment necessary at 51000 miles?

Post by jimm4 »

if i wasent down anyway i would have not checked but glad i did now just adjust and see if helps
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Re: Valve adjustment necessary at 51000 miles?

Post by GoldWingrGreg »

jimm4 wrote: Sun Jan 02, 2022 4:15 pm a crack in trans cover something flew up from road and hit it so while down for repair at 72000 i decided to check valves all intakes are on side of tight .005--- 1 wont go in at 005 so waiting on shim kit to adjust them . they are a tight 005 so going to loosten all up a little !!
Glad to hear that you're doing a valve adjustment. The goal should be to center-spec them at 0.006 and 0.009. Basically, an equal amount of gas/air in on each cylinder, and an equal amount of exhaust exiting on each cylinder is when your engine will perform best.
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jimm4
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Re: Valve adjustment necessary at 51000 miles?

Post by jimm4 »

yep the intakes all needed loostened up 4 were tight 005 and other 2 wereunder 004 couldent get guage in them. havent riden yet but i think is sounds diff. havent ridden yet though
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Re: Valve adjustment necessary at 51000 miles?

Post by Terry D »

On my 2001 I checked them after 5 years with 46k miles and I had one valve shim adjustment to be made. It was only .001 out.
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Re: Valve adjustment necessary at 51000 miles?

Post by Wingsconsin »

On my 2003 I did it at 35,000 miles -
2 valves needed adjusting

I am now at 67,000 miles and will do it again just to KNOW it's as good as it can be for the next 35K +/-

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ron203
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Re: Valve adjustment necessary at 51000 miles?

Post by ron203 »

Had my '08 checked at 34,000 since I bought it w/28,000 so I should be good until the next one. I'd check them @ 51,000 for sure, but be sure you trust your "guy."
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Re: Valve adjustment necessary at 51000 miles?

Post by GoldWingrGreg »

jimm4 wrote: Sun Jan 02, 2022 5:46 pm ofcourse i should add may have been that way from factory it is first time they have been checked
Thinking that it came that way from the factory, although can never be ruled out, is not likely. I do more GL1800 engine work then probably any other shop in the world, and for the most part, unless you could say that you checked your valve adjustment when your Wing was new, I'd consider your statement as false.

On 5th gen Wings, valves go out of adjustment because of cam bearing wear (cam-cover wear). This is easily varified by following the procedure in a Service Manual by using plastic-gage. When new, the oil-clearance gap is usually less then 0.001". At about 120-150k, that same gap is then widened to 0.003". The increase oil clerance is what causes the valve gap to change and need adjusted.

I also do many valve adjustments, and here are certain things that I've learned over the years. As Honda says, valve adjustments need checked and adjusted every 32k. There is a reason Honda puts a +-0.001" on each valve gap spec, and there is a reason it's required every 32k. Also, in most cases, adjustements usually start with the intakes rearward intake valves, and as mileage increases, the valve needing adjustment move more forward.
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jimm4
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Re: Valve adjustment necessary at 51000 miles?

Post by jimm4 »

i stand corected my mistake. only been mechanic for 50 yrs


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