tdragger
Living Legend
Go to the R3owners.com site and search for any post by the user Juggernaught. The R3 Service Manual is available in his signature line.
TxRIIIRider
Living Legend
Here's the link from Juggernaught's signature line..
http://www.croman.us/stuff/Rocket_Manuals/Service_Manual.pdf
http://www.croman.us/stuff/Rocket_Manuals/Service_Manual.pdf
Pig9r
Living Legend
Not too bad a job with the service manual in hand or on screen.
http://www.r3owners.net/general-tech-talk/3712-i-checked-my-valves-today.html
http://www.r3owners.net/general-tech-talk/3712-i-checked-my-valves-today.html
Lester532
Turbocharged
Nice post about checking valves but one observation though.
As valves wear they are driven farther into the seat reducing the clearance. A loose valve is fine but if a valve has zero clearance or less it won't seat properly when the happens it can't transfer heat to the seat and the valve gets burnt requiring replacement. The shims and cam lobes are hardened steal and get alot of lubrication therefore wear very little. Almost all of the wear occurs between the valve and seat.
HellFire
Legend
- Joined
- Aug 16, 2008
- Messages
- 4,518
Overhead cam engines wear in both the seat and the shim/lobe. I hear what your saying, but you did you take into account overhead cam lobes slappin the **** out of the tops. They can wear open as well as closed, and if the oil/lobe/shim lacks lubrication or has a defect in hardness, they can wear open FAST.
Nevermind, you are talking about how it is supposed to be ... you are right. I always look back on days in the shop where some teeny-bopper brings the car in clacking like crazy and the oil has to be changed with kerosene and a coathanger. My bad.
Nevermind, you are talking about how it is supposed to be ... you are right. I always look back on days in the shop where some teeny-bopper brings the car in clacking like crazy and the oil has to be changed with kerosene and a coathanger. My bad.
Last edited:
Lester532
Turbocharged
Overhead cam engines wear in both the seat and the shim/lobe. I hear what your saying, but you did you take into account overhead cam lobes slappin the **** out of the tops. They can wear open as well as closed, and if the oil/lobe/shim lacks lubrication or has a defect in hardness, they can wear open FAST.
Nevermind, you are talking about how it is supposed to be ... you are right. I always look back on days in the shop where some teeny-bopper brings the car in clacking like crazy and the oil has to be changed with kerosene and a coathanger. My bad.
I'm not saying that wear can not occur between the cam and shim but your not really comparing apples to apples. Car engines have similar construction but they lead a completely different life .
The teeny-bopper,s car with 150,000 miles, infrequent oil changes and topping off the oil with a quart of what ever the corner convenience store sells, then drive the hell of it. Yes poor maintenance and abuse do take a toll on the life of the engine.
On the other hand you have a motorcycle owner. Most bikes won't see 50,000 miles, full synthetic oil in most or all modern bikes, with your average owner a bit more passionate about the care of their machine.
Yes wear can happen anywhere, but I would be a lot more concerned about valves at the tight end of the spec.
Just my take on it I hope I didn't step on any toes.
