1130 Tornado Camchain horror
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Thread: 1130 Tornado Camchain horror

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    1130 Tornado Camchain horror

    38000km on the clocks, original camchain.

    Just look at that stretch!!! Not much more and i`d be collecting engine bits....
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    Senior Member Rick67's Avatar
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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 🙂 .
    Rick

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    Senior Member Engenia's Avatar
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    Quote Originally Posted by Finnelli82 View Post
    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.

    Quote Originally Posted by Finnelli82 View Post
    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..

    Quote Originally Posted by Rick67 View Post
    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.
    hooroo, Errol www.engenia.com.au [139,200 km - and counting .....]

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    It was 1,82%

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    King of the Group-Buys Laurencewhite's Avatar
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    It was 1,82%
    Yikes!!! You were lucky to catch it when you did.
    Laurence

    Benelli Tornado 900 LE No. 49
    Benelli 1130 TNT Titainium
    Benelli 1130 TRE-K
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    Senior Member Engenia's Avatar
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    Quote Originally Posted by Finnelli82 View Post
    It was 1,82%
    Holy Shit!
    hooroo, Errol www.engenia.com.au [139,200 km - and counting .....]

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    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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    GBo
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    Are the timing marks always like that? They will never line up.

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    I think with new chain, they will be MUCH closer.

    But my MV F4 is like this too, you cant get them to 100% line up.

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    Senior Member Engenia's Avatar
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    Quote Originally Posted by Finnelli82 View Post
    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.

    Quote Originally Posted by Finnelli82 View Post
    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.
    Last edited by Engenia; 09-28-2020 at 07:50 AM.
    hooroo, Errol www.engenia.com.au [139,200 km - and counting .....]

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