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I wouldn't take too much notice of those marks lining up perfectly .. it's a good indication it needs doing however,
When I did my cam chain on the Trek I couldn't get them perfectly aligned either.
Nice to see your on the case keeping her healthy 馃檪 .
Rick
 

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Just look at that stretch!!! Not much more and i`d be collecting engine bits....
When you remove the chain, compress it so that it is as short as it can be and measure the distance from the furthest pins in a straight line. This should be the new length as the pins won't be worn on that side.
Then expand it to as long as it can be and measure between the same pins.
The work out what percentage it has "stretched". (difference shortest to longest divided by shortest length times 100)
If it is more than 0.5% that's about as far as you want to go with a high revving engine.
That's about how much the 900 Tornado chain "stretches" in 25,000 km.

38000km on the clocks, original camchain.
I wouldn't mind betting, given the 160+ hp the 1130 Tornado has on tap, that the chain should be changed closer to 25,000 km than 38,000 km. It isn't a standard TNT 1130.
I could be wrong (often am), but that engine has to get the extra horses from somewhere, and extra revs is the easiest way to get them. Extra revs means stronger valve springs, or better cam profiles, but Benelli haven't done this in the past, so spring force is my bet..

I wouldn't take too much notice of those marks lining up perfectly
Yep, if you want to time the valves perfectly, you'll need the cam sprockets from the LE or the earliest of the 900 Tornados. The angle can be adjusted in each. You'll need to know the crank angle and cam lobe positions to adjust them. All fully explained in the Tornado workshop manual.
 

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Discussion Starter · #7 ·
I believe the 1130 TNT manual said 40k was the interval?

I would not like to try getting there with the original chain, the chain was toast. Felt like a bungee cord :)

Funny thing is, the chain sliders looked like new, no visible wear on them, go figure.
 

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I believe the 1130 TNT manual said 40k was the interval?
Vastly different engine in the 1130 TNT. It doesn't rev anywhere near as much.
I suspect that the R160 engine is quite similar to the 1130 Tornado. The clutch springs will be much stronger to deal with the higher revs that get you more hp. The heavier springs wear out the cam chain quicker.
I'd be surprised if the cam chain replacement interval in these 160hp engines is much more than 25,000 km.

Funny thing is, the chain sliders looked like new, no visible wear on them, go figure.
I generally replace the moving guide every two chains in my 900 Tornado.
 

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Discussion Starter · #14 ·
Tried with oem injectors while STILL waiting for the injectors to arrive from service. The idle of the bike is vastly different than with the old camchain, and it starts with just a touch on the button.

So a conclusion is that the stretch i had, it was really hampering the running! Of course my other servicing might play a part too, but this chain thing is also a big part of it.

Off to a dyno when the injectors finally arrive....
 
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