How much will an out of spec cam chain affect performance? - Honda Motorcycles - FireBlades.org
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post #1 of 3 Old 09-10-2008, 4:52 AM Thread Starter
 
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How much will an out of spec cam chain affect performance?

Guys drove the ol 954 again for the 1st time since I got my K6 Gixxer 1k (turncoat I know) & it feels positively lethargic compare to the Suzuki. I know the Zukiís got a better engine but surely not by this much. The bike just feels dead & the more you open the throttle the worse it gets. Initial bottom end & part throttle is ok but wind her on & a 600 would overtake you Iíd say L

Since I gave her a good service last time (plugs, oil & filters, valve clearances & new CCT) I can only surmise that the engine must be slightly out of timing due to the cam chain being knackered. Even with the new CCT its noisy as hell & the new CCT is fully wound out. Bike has about 60k miles & I checked the cylinder compression & all were around 170PSI which seems good.

My question is would a worn out cam chain make the engine feel like this? This bike used to make 142 rwBHP & wheelie off crests in 3rd gear. The front wheel is stuck to the ground in everything but 1st now & the fuel economy has dropped too.

Also can the cam chain be swapped out without removing the cams? Can you just remove rocker & clutch cover & unbolt the crank sprocket to get some slack on the chain??

Is there a possibility it might break??
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post #2 of 3 Old 09-10-2008, 5:13 AM
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Re: How much will an out of spec cam chain affect performance?

What mileage have you got on the Suzuki.
The Suzuki is already more powerful than the 954 and 60,000 miles on the 954 is going to make more difference still.
My 929 is coming up on about 25,000kms I think and some of the new 600's can almost pull a gap on me on the straights. When I dynoed it at 9000kms it had 135hp but it certainly doesn't have that now. I'd be surprised if it's much over 120 now.

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post #3 of 3 Old 09-10-2008, 9:59 AM Thread Starter
 
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Re: How much will an out of spec cam chain affect performance?

Suzuki has 13000km & the 954 has at least 100000km

The big Zuk is almost definitely making 165 rwHP - certainly feels like that! I'd say it goes as hard in 6th gear as the 954 does in 4th.... or even 3rd! Seriously it makes the 954 seem like a toy
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