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Discussion Starter #1 (Edited)
So I've had my 2002 CBR954RR for about a year now and I start hearing some rattling coming from the front of the tank. It only happens under load and when accelerating rather hard. With 73,000 miles I figured I might need to adjust the valves. So I checked my clearance.

All in spec. (Exhaust was 0.25 to 0.27 and Intake was 0.13 to 0.15). Cam Chain Tensioner was good too (manual).

I poked around the motor and the web and I find out that it's just a noise they make. Bullsh!t.

Someone mentioned piston slap, and I thought, "oh no. Please, not that."

Yes that. Cylinder 4 was the worst with scoring that you can feel. Yes, my carpenter, callused fingers were able to feel that.

So now I am undergoing the 980 conversion. Gonna replace the 75mm pistons with 76mm. I just need to find a machinist...
 

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Heeza Y Zasch
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:shades: subscribed :deal:
 

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Discussion Starter #12
More progress...

Got the swing arm and bracket off. Removed oil pan and started with the bolts.

Found a little surprise. Oil pan had A LOT of copper? bits inside. I hear that's it's normal when there's piston slap so I'll clean it up and hopefully I can determine what part(s) it came from so I can replace it(them).
 

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You're gonna have to send your upper case to Millenium. They'll bore and replate the cylinders. They can also send you the pistons too. I had them do the cylinders for my 04 CBR1000. I got a decent deal on my +2mm pistons from them.
 

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Discussion Starter #15
I found a local guy that a buddy of mine used to use, Screwie Lewie's Motorsports. Not sure if he does the plating himself but at least it will get done. Not sure yet what it will cost, but one thing at a time. I'll get them bored at the machinist around the corner, CBS Specialists. They said it would be about $67 a hole. I just need to get one of the pistons first so they have exact measurements.
 

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I doubt that he'd be doing the replaying. If someone else is playing it, they should be the ones doing the boring too. They going to have to bore the cylindersbigger than they need to be so they have room to plate the cylinders and have the correct tolerance for the pistons when the playing is done. Also, the cylinders will have to have the right finish so that the nikasil will adhere correctly.
When Millennium did mine they took forever because they had to make sure everything was correct
 

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Discussion Starter #17
I never thought about that, thanks for the info. I'll see what the guy can do and how much it will be. It would probably be easier to drop it off at one place to get it all done anyways. I'm going to call them today
 

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This seems to b very common issue in most of the 954s. why honda is not doing recalls?
Because it's 2018 and all of them are out of warranty. My last engine had 53,000 Kilometers on it before cylinder three gave the spark plug an oil bath, didn't chew any oil before that point.
 
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