Author Topic: 24,000 mile valve check  (Read 1194 times)

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Offline 2wheelrush

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24,000 mile valve check
« on: March 29, 2013, 06:53:43 pm »
well that's what the new rider mag. said. im sure its still 15,000.

Offline RideBellChain

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Re: 24,000 mile valve check
« Reply #1 on: March 29, 2013, 07:08:38 pm »
I wish it was 24,000...15,000 is BS.  I don't think anyone did a thing on mine.  Wish I would have put something under the tank to see if they even took it off...
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Offline Wild_Bill

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Re: 24,000 mile valve check
« Reply #2 on: March 29, 2013, 08:26:34 pm »
I did my valve adjustment without removing the tank, or the glovebox, inner panels or windshield.

But mine is an 09, might just be better designed then the newer ones.

Bill
Formerly known as Badnews_Bill

Offline thundermax

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Re: 24,000 mile valve check
« Reply #3 on: March 29, 2013, 11:17:58 pm »
18,000 miles and still no valve check. Think I will check next year.
Riding since 1966 at 13. Just purchased my tenth bike in my life. Now have two at same time. 2009 C14 and 2012 C14. Here are bike I have owned: 1958 Cushman model 721 Highlander, 1960 Cushman Super Eagle, 1971 Honda SL 100, 1974 Yamaha RD350, 1975 Honda 750 Four, 1971 Honda SL 175, 1998 Vmax, 2005 Vmax, 2009 C14, 2012 C14. COG#11056, South Central Area, Oklahoma.

Offline gPink

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Re: 24,000 mile valve check
« Reply #4 on: March 29, 2013, 11:26:12 pm »
Euro spec bikes are 24k I think. 15K must be EPA driven.

Offline Rembrant

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Re: 24,000 mile valve check
« Reply #5 on: March 30, 2013, 12:28:15 pm »
The 24,000 is kilometers...same as 15,000 miles.

I checked the valves on my 2008 C-14 at 15,000 miles and again around 35,000 miles, and they had to be adjusted both times. I find the exhaust valves are almost always all out of or near the edge of the spec...and a random couple intake valves usually.

I wouldn't worry about checking them on the exact mile interval. I check mine in the winter...I'd never bother in the summer/during riding season.
« Last Edit: March 30, 2013, 12:30:02 pm by Rembrant »
“If you're not a liberal at twenty you have no heart, if you're not a conservative at forty you have no brain.” ~ Winston Churchill.

Offline Scott Bechler

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Re: 24,000 mile valve check
« Reply #6 on: March 30, 2013, 07:19:08 pm »
US spec is 24k km / 15k miles. All other countries are 42k km / 26250 miles. I'm sure it has to do with emissions and valve overlap. As miles rack up the clearances get tighter, causing more overlap, putting more HCs in the exhaust. I'm doing my valves now at 20.5k miles and the exhaust are all in spec and six intakes are about a half a thou tight each. Would have very easily went 26k before checking.

Offline JPavlis_CA

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Re: 24,000 mile valve check
« Reply #7 on: March 30, 2013, 07:37:29 pm »
I too went with ROW spec for valve adjust, doing my first valve check at 24k+. I just finished taking the numbers and the results were surprising. All of the exhausts are 7 thou, and all of the intakes are 5 thou except for two which I'm calling 4.5 thou. Never seen numbers this consistant before so I did it a second time with a different set of feeler gauges - same numbers.

Since there's two a little tight I'm going to go ahead and pull the cams and figure out what's in there. But it looks like I'm going to be buying a lot of shims to get them all to the middle/high side of spec.

Data point: I normally very rarely exceed around 7k rpm, and don't accelerate with max throttle. Don't get me wrong, I have on occasion but don't make a regular habit of it.
« Last Edit: March 30, 2013, 07:41:11 pm by JPavlis_CA »
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Offline Dave_Wilton

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Re: 24,000 mile valve check
« Reply #8 on: March 31, 2013, 01:32:13 pm »
Canada is 42000 km per my dealer.