78,000 Mile Valve Adjust

[Scarbutt]

Just finished with my 78,000 Mile Valve Clearance check on my 04.

I am pleased to announce they are still within factory specs with original shims !

John

 

[FJRottie]

Very nice.

 

[GunMD]

WOW. That's great news. Good job, Japan!

 

[twowheelnut]

WOW. That's great news. Good job, Japan!

Untd, vat ees eet you meen by zaat, eh, mein freund?

:lol:

 

[Orient_Express]

Scarbutt,

My 26,000 mile service yeilded the same results - now at 32,000.

78,000 miles says a lot for the Yamaha product - and YOU for taking such good care of your motorcycle.

Hope mine turns out the same!!

 

[03HiYoSilver]

Wow2!

We sure have a lot to proud of....Thanks Yamaha!

Who else can report this kind of engineering and quality out of a motorcycle?

 

[DucatiSSsp]

Wow2!We sure have a lot to proud of....Thanks Yamaha!

Who else can report this kind of engineering and quality out of a motorcycle?

Had the same results when i took my '01 Yammie WR426F for a long over due valve check last year. My friend had taken his YZ400f to BBR and

they told him that they rarely have to adjust valves on the Yamahas.

Bryce

 

[Dan23]

You hear more and more about this sort of reliability. 65k miles on my Aprilia and never an adjustment. Once an engine goes through its initial settling in, only serious deterioration of valve seats or cam/cam bucket surface is going to result in any change.

 

[skyway]

Who else can report this kind of engineering and quality out of a motorcycle?

Only Honda I would think.

 

[jestal]

That sort of service out of a direct acting valve train like most motorcycles use is actually pretty common. I would worry if the lash changed. Lexus V8 automotive engines have had fixed adjustment tappets (solid lifters as opposed to hydraulic lifters....) since 92-93 and they rarely if ever change lash with well over 100K miles on them. (The timing belt may break but the tappet lash doesn't change) I put over 100K miles on my old XS1100 and the valve lash never moved from the first time I checked it...and that was 1978 tech. I think most "valve lash adjustments" are done purely to get the lash to a "more optimized" or "more accurate" value rather than to compensate for any actual change in the system. Other style of systems that have mechanical tappets that seem to require constant adjustment are the victim of adjustable parts that move and introduce the error themselves, not the actual system changing lash.

 

[charismaticmegafauna]

<snip>....Lexus V8 automotive engines have had fixed adjustment tappets (solid lifters as opposed to hydraulic lifters....) since 92-93 and they rarely if ever change lash with well over 100K miles on them. (The timing belt may break but the tappet lash doesn't change)

To quote my dear departed father, John Harvey, "I wouldn't own an engine that had a 'rubber band' driving the camshaft."

I think most "valve lash adjustments" are done purely to get the lash to a "more optimized" or "more accurate" value rather than to compensate for any actual change in the system.

On a similar note: Don't you think, too, that a lot of credit is due the EPA mandate to unleaded fuel -- requiring much longer lasting valve seats/faces? In the old days (leaded fuel) we'd have valve seat recession and pocketed valve seats & head faces changing clearances -- even with shim and bucket or, fixed adjustment tappets.

 

[TruWrecks]

That's outstanding! Kudos to you Scarbutt for taking good care of your bike!

I had a 1980 Maxim 550 that was in the same condition at 63,000. I did bust a rod cap on the #2 piston rod at that point, but the rest of the engine was in great shape.

 

[timk]

78 XS1100 70,000 mi none required

86 Venture Royale 90,000 mi none required

05 FJR 21,000, we'll see soon

 

[FlyingLow]

05 FJR 21,000, we'll see soon

Likewise, I'm sure. '05 FJR, 22,000, we'll see soon, probably after WFO.

'84 FJ1100, 10,000 miles when purchased, 7 out of 16 were loose. Easy job on that bike, though .

 

[terryfarnham]

just for interest sake how long did it take to remove panels etc. to get to the valve cover then actually check the clearences?

 

[mdisher]

Just for interest sake how long did it take to remove panels etc. to get to the valve cover then actually check the clearences?

What he said without all that extra jibberish

 

[timalan]

Just finished with my 78,000 Mile Valve Clearance check on my 04.I am pleased to announce they are still within factory specs with original shims !

John

OK here is where I ask. What filter and Oil you used. Sorry if I missed it previously. This is not a pointless question as It is a proven Case you are not doing the wrong thing....

Thanks

Timalan

 

[rangerray]

I had valve clearance checked on mine at about 36,000 miles for the first time. I was told that everything was in spec. and I'm probably not going to have it done again.

 

[Bounce]

please pin this post and referr to it when you decide to sell your bike.