SkooterG
Purveyor of Crooked Facts
See?
Jestal's just a 13 year old pimply faced 'puter geek I tells ya!
:lol:
Jestal's just a 13 year old pimply faced 'puter geek I tells ya!
:lol:
FJR1300 Middle Drive Failure
- Thread starter Warchild
- Start date
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Rickster
Well-known member
I would rule out heat-treat or bad metal. If that were the case -- there would be a lot of FJR's affected (both would be batch manufacturing processes -- regardless of lean/single-piece-flow manufacturing).
radman
R.I.P. Our Motorcycling Friend
Cosworth DFV. Nice rod, polished beam, floater, 12 point nuts, balancing ref weight looks to be 600 grams, light for a steel rod, looks like a Carillo. Short skirt, short stroke, a revver. Tight ring stack, flat top piston, chamber does it all with a nice fast burn across the flat top.
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radman
R.I.P. Our Motorcycling Friend
I was gonna say small block Chev, but man thats a short skirt for a Chev. Coated too, a Mahle maybe?
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That is a pre-production piston/rod from the LS7 engine that is in the Z06 Corvette. The production piston does not have a "dig out" slot for the pin retaining ring.
The rod is actually titanium.
To all of what you said....Yes!...that is what it takes to make 505 HP and turn over 7000 RPM with a 427 "small block".
It is a Mahle piston.
Just happen to have one as a paper weight and convenient prop.....
Toecutter
What would DoG do?
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twowheelnut
R.I.P. Our Motorcycling Friend
He really is ya know. Try tracking the URL of that piston piccie. You *******! :lol:
tyronewildman
Real Old Guy
WoW, this threads been around the world. Looks like a simple case of Fretting Corrosion (dissimilar metals-heat treat differences, etc) to me. Looks like the gear was installed on the shaft with out proper lube (to keep out air out between the parts) and then bolted down tightly. Corrosive air can't get out & oil can't get in-centrifugal force does sling the oil out away from the shaft, doesn't it. Does this joint (maybe air tite) suck when cooling down. Hmmm Not air tite-see the corrosion on the gear away from the spline. Seen this same joint failure a few times in my various plants. Now, it would be interesting for U guys who are disassembling their engines (for other reasons) to take this gear off their shaft just to check.
Merry Christmas U guys & gals, Later,,, De
Merry Christmas U guys & gals, Later,,, De
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Toecutter
What would DoG do?
So who's gonna be the first to go in there and see if theirs is properly tightened? Hmmm, somebody who is capable, yet not riding due to climate restrictions, or busy working on snowmobiles....A heated garage would be beneficial....Radman?
Scab
I got nothin' here...
I actually have those pics. But as long as Skoot's checks keep arriving on time, I have agreed not to publish. Sorry.
S76
Well-known member
Well I tell ya, there's nobody that spends more time than me fixing things that aren't broke. And this one really did peak my curiosity initialy and had me rushing to the toolbox. But a one time occurance with all the FJR miles accumulated to date makes this a "pass" even for me. I do believe it was due to insufficient torque of the retaining nut and is most likely a one time occurance. If the factory torque recomendation was too low there would be alot more of these instances. Probably just a Friday afternoon gearbox.
twowheelnut
R.I.P. Our Motorcycling Friend
SkooterG
Purveyor of Crooked Facts
melvynthemagnificent
New member
I know this is an old post but I have also suffered middle gear failure at 76000 miles, so maybe not a one off?
2004 UK FJR
2004 UK FJR
03HiYoSilver
Well-known member
Wow! 2nd post at 76k... not bad... but fantastic! Let us know how your fix went. Don't keep us hanging until 152k miles.
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