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Engine comparison

This is a discussion on Engine comparison within the FZ-09 Pictures / Videos forums, part of the Yamaha FZ-09 Forums category; Here's a little side by side comparison of the "09" motor next to the "07" motor. Both from the UK MT series of course. At ...

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    Senior Member Willowbilly's Avatar
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    Engine comparison

    Here's a little side by side comparison of the "09" motor next to the "07" motor. Both from the UK MT series of course.

    Name:  yamaha motors.jpg
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    At least I'm pretty sure that's what this is. I got it off a French web site and I don't read French.
    Last edited by Willowbilly; 11-11-2013 at 01:41 AM.

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    Tog
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    I believe you are correct. I saw that picture some were else with that explanation.
    - Richard

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    Senior Member Willowbilly's Avatar
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    I guess the only point I was trying to make with the picture is the FZ-07 (should one ever materialize) will be really narrow.

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    Tog
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    I believe you are right. I think the 07 looks nice and if the price is right, it should kill the mid range standard market.
    deadduck357 likes this.
    - Richard

    FZ-09 Liquid Graphite - Kappa RA308 tank bag, T-Rex stands, Mad Hornets levers, translucent Siegler brake lines, T-Rex protection , Tech-Specs Tank Grip and Protector, Penske 8983, horn relocated, Grave's fender eliminator, Scorpion Stinger LiFePo4 battery, Arrow mirrors, RhinoMoto bar adaptors, Puig Sport screen, Pro Grips 714, Motodynamic tail light, Tripage LED flasher, M.factory turn signals, 02 controller, Tripage LED headlight, knock-off chain adjusters, Evotech radiator guard, knock off steering damper, GP Suspension cartridges, Cruizin cruise control, Akrapovic Carbon exhaust, 2017 Yamaha comfort seat

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    Senior Member deadduck357's Avatar
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    Quote Originally Posted by Tog View Post
    I believe you are right. I think the 07 looks nice and if the price is right, it should kill the mid range standard market.
    100% agree

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    Senior Member RichBinAZ's Avatar
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    I noticed the FZ-07 has an exhaust cam centrifugal adjuster - which will either advance or retard the timing as RPM increases - kind of interesting

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    RichBinAZ
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    Senior Member baconrocket's Avatar
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    No electronics to go bad. Simple design. I like it.

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    Senior Member eolith's Avatar
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    Quote Originally Posted by RichBinAZ View Post
    I noticed the FZ-07 has an exhaust cam centrifugal adjuster - which will either advance or retard the timing as RPM increases - kind of interesting
    a whosiwhatsit?

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    Senior Member baconrocket's Avatar
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    Basically variable valve timing, but instead of using a servo motor to advance the cam, it uses weights. When the cam spins up, the centrifugal force causes the weights to follow a path. Those weights are connected to the cam (or a planetary gear or something like that) which in turn rotates the cam relative to the cam chain/ignition/crankshaft.

    Basically this, but not using an electric servo motor.

    cjhorton and vapexpr like this.

  11. #10
    Senior Member bobby walnuts's Avatar
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    if the 07 had variable valve timing, yamaha would have bragged about it in the specs. it's more likely to be an automatic compression release.

    also, single cam variable valve timing is usually implemented on the intake, not exhaust.
    Last edited by bobby walnuts; 11-15-2013 at 06:32 AM.

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