Engine vibration

[trahajopro86]

I have an engine vibration that seems to be getting worse as time goes by. There isn't really any noise that I can hear associated with it, but that could be I just cant hear it over the normal engine / exhaust sounds.

2013 Stock engine and exhaust
approx 3500 miles
I can pull in the clutch on the freeway, and then rev the engine (without load) and feel the vibration, so it doesn't seem to be a drivetrain issue. Also, I can get the same vibration at a stand still.

Vibration seems to be in the 3k - 6k range, but that could be that I just don't feel right revving the engine at a constant that high without load.

The bike has never been down, or even ridden hard. If anything, I 'lug' it too much.

Ideas?

-Tracy

 

[JSP]

Well, stop lugging it for one. That can be worse than riding it hard.

So no noise, just a feel?

You are still under warranty, maybe just have Yamaha take a feel and see what they see.

Something could just be lose and is vibrating but not making any noise. Not sure. Where do you feel it? The bars, the pegs?

 

[Marthy]

Drive it like you stole it!

Cruising on a open freeway here at 75 MPH... the engine spin 6500 RPM. 7K @ 80MPH. Good thing you don't ride a FZ6R! LOL

I know the FZ8 got a bit more pull on the bottom but try to keep it over 5K when accelerating...

 

[villhelmromero]

Cruising on a open freeway here at 75 MPH... the engine spin 6500 RPM. 7K @ 80MPH. Good thing you don't ride a FZ6R! LOL

Is that the speed you're getting in sixth gear on the FZ8? I'm getting 83 @6000 in sixth on my all stock 8. anyhoo just curious

 

[Marthy]

No, I have the most bad a$$ FZ6R! Lol

Sent from my SAMSUNG-SGH-I337 using Tapatalk 2

 

[villhelmromero]

ohhhh. that makes sense lol

 

[bobbyb]

70 mph = 5000 rpm
80mph = 6000
B

 

[trahajopro86]

I'm curious about the various RPM specs quoted above. I am assuming that the FZ8's are NOT 2013's? Didn't they drop from 6 speed to 5 speed in 2013? I was cruising in to work this morning and noted

4th Gear 6200rpm @ 80MPH
5th Gear 5700rpm @ 80MPH

It seems my engine vibration goes away around 6000rpm, but is quite horrible 4500-5000. I think I will take it in for a check because it seems to be getting worse.

Until then, I guess the consensus is, quit driving it like an old man?

-Tracy

 

[Rabbitman109]

Didn't they drop from 6 speed to 5 speed in 2013?

No, that would be silly.

 

[trahajopro86]

No, that would be silly.

I swore I read that somewhere, Now I'm gonna have to count when I shift on the way home. I could have sworn it was a 5-speed.

 

[JSP]

I swore I read that somewhere, Now I'm gonna have to count when I shift on the way home. I could have sworn it was a 5-speed.

Nope. 1 down, 5 up.

http://www.yamahamotorsports.com/sport/products/modelspecs/652/0/specs.aspx

 

[Rabbitman109]

I swore I read that somewhere, Now I'm gonna have to count when I shift on the way home. I could have sworn it was a 5-speed.

Sport bikes haven't been 5-speeds in a long time. I don't see them going backwards. Lot of cruisers are converting to 6-speed as well, it is just over all better. Allows for more road speed with less engine speed.

 

[JSP]

Sport bikes haven't been 5-speeds in a long time. I don't see them going backwards. Lot of cruisers are converting to 6-speed as well, it is just over all better. Allows for more road speed with less engine speed.

My Bandit has 5 and I didn't realize it at first haha. WTF? SHIFT!!!! oh... Luckily its not geared too crazy and its got a fairly low 5th RPM. Just muscle memory trying for that last gear.

 

[Marthy]

My Bandit has 5 and I didn't realize it at first haha. WTF? SHIFT!!!! oh... Luckily its not geared too crazy and its got a fairly low 5th RPM. Just muscle memory trying for that last gear.

Event after 3+ years and over 42K miles... I'm still looking for that 7th gear sometime.

 

[FZ8-Power]

Sometimes I look for the 7th gear too...

 

[pigdog]

i ride like an old man because i am one. i like the fact that i can shift into 6th gear at 45mph & leave it there all the way to top end. as far as vibration that wasn't there before, let the dealer know & let them take care of it.

 

[trahajopro86]

i ride like an old man because i am one. i like the fact that i can shift into 6th gear at 45mph & leave it there all the way to top end. as far as vibration that wasn't there before, let the dealer know & let them take care of it.

I took it to the Yamaha dealer in San Jose and they said there is nothing wrong, and that is "just the nature of the beast". I don't buy that at all. It was NOT like this 2000 miles ago. I have an appointment with the dealer I bought it from (I didn't go there first because I moved and it is not very close anymore), and on the phone he said that he has heard complaints about that. He said a throttle body sync may help, but I don't see how.

I'll post that results in a week or two on whether it helped or not

 

[BigOleChalupa]

..

It's true, that lugging an engine is one of the worst things you can do to a bike.....

 

[Darksabre]

It's true, that lugging an engine is one of the worst things you can do to a bike.....

Hmm, can you expand on this? I tend to keep my RPMs low, like 3k most of the time. I notice a ton of vibration in certain higher RPM ranges on this bike.

 

[DSmith]

Hmm, can you expand on this? I tend to keep my RPMs low, like 3k most of the time. I notice a ton of vibration in certain higher RPM ranges on this bike.

My cruising speed is around 4500rpms. These bikes arent like Harleys, they like the higher rpms