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Discussion Starter #1
Hi.
I did take the engine off so I can paint it black. I looked in the exhaust holes and they were weird.
Anybody else have this kind of exhaust holes ?
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I checked heads in the ebay and found two head where was same looking exhaust holes (look the last pictures):
H49 Honda CBR954RR CBR 954RR 2002 Engine Cylinder Head Assembly w Valves | eBay
Honda CBR954 CBR900 CBR 900 954 RR CBR954RR 2002 Engine Cylinder Head 2003 | eBay

So what is your opinion why those seems like that ?
 

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Discussion Starter #4
Looks normal, what's the mileage?
About 45 000km. I checked valve clearance and exhast was good but intake wasn`t.
IN:
1#17,20
2#14,18
3#14,18
4#16,18
I will adjust those valves.

And that different color in the exhaust hole was my question.
I have never seen that kind of "phenomenon" in any bike.
So I´m a litte worried that is the engine totally ok.

Any solution what cause that dark and clean are?
Normally exhaust hole black color is all over the hole?
 

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Discussion Starter #6
I would think soo.. the bike ran fine though? It doesn't look like much as far as deposits go for that kind of mileage.
Bike ran pretty good but one issue is idle.
It`s not so smooth at low rpm but in the middle and top rpm bike work great.
But I have been reading this forum and mine conclusion is that it`s normally in 954 ?

I did buy power commander so I assume that low rpm problem will solve when I install commander.
And also I will try to do Starter Valve Synchronisation.
 

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Honestly I think you're running lean... or you are running with to hot of spark plugs... see this chart, I'm sure your spark plugs look the same as the white chalky one.
I thought that too, but the other side of the same port is nicely coated in black. Deffinitely check the plugs for a more direct answer.
 
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