Yamaha R1 Forum: YZF-R1 Forums banner

have a new 2008 R1 and have a new to R1 question

1.9K views 30 replies 20 participants last post by  7777r1  
#1 ·
I have a 2008 R1, my first so I don't know if this is just normal for the R1 or not! I only have 300 miles on it right now. the engine revs good in neutral and above 4000rpm`s, but getting to 4000rpm`s it feels almost like its bogging down. I want to say its almost like a low rumbling hard vibration from the engine with slow acceleration. becomes more pronounced with harder acceleration. above this it seems to take off like I would expect. it is 15mph down my street then up to 30, when I go from 15 to 30 I get what I explained before and from 30 on its seems to go great. I understand that the bikes doesn't stretch its legs until higher in the rpm band but just wondering about the vibration and acceleration situation.
 
#2 · (Edited)
im pretty sure thats normal. go -1 up front on the sprocket. also above 10k is heaven on the R1. welcome to the forum and congrats on the new bike. mine would do the same until i changed my gearing. it was hard to pull away from stop lights and it was easy to kill the engine.
 
#5 ·
i havent rode an 07-08 but from what your describing thats what it sounds like.
 
#7 ·
I am about to buy this bike as well and am a bit bummed about this. Here's an article clip for the 2007 model, which is basically the same. This is found from www.motorcycle-usa.com

"As for how the new four-valve engine compares with the old five-valve mill, that's mostly a big upside. We're happy to report that midrange power, one of the few aspects lacking in the previous edition, has received a healthy boost.

A comparison of power curves exposes the '07 bike's advantage, as it makes more power nearly everywhere. The improvement is especially noticeable in the 6800-10,000 rpm range, where the new bike cranks out a perceptible boost. Impressively, our fresh R1 cranked out a bodacious 156.4 hp peak, quite a step up from the 148.5 from 2006. Torque is similarly affected, with a peak of 74.9 lb-ft at 9600 rpm compared to the 71.4 lb-ft peak of the old bike (at a higher 10,000 rpm).

Sadly, it's not perfect in the engine room, and this becomes evident each time you have to get going after a stop. Power below 4000 rpm is scant, despite what the dyno chart shows. It's as if the airbox swallowed a sock while the bike tries to clear its throat, a frustrating situation when sitting atop a 156-hp missile and having to slip the clutch like a 125 GP bike when leaving a stop light."
 
#8 ·
like i mentioned aboce mine did it as well but from what im reading not as bad as the 07-08. when i changed my sprockets it totally fixed it. it is really easy to pull away from stops now.
 
#10 ·
It is a race orientated bike, so as such it's power is up high. If you listen to the full on race bikes they scream the engine to take off. It's just one of those things of either or but not both.
 
#13 ·
It also is the fly by wire.
Yes.

I am 99% sure that your problem is that you are just not used to a Fly-By-Wire throttle.

I had a similar complaint to yours when I bought my '07 back in Dec. 2006.

You just have to remember that the twistgrip must be turned MUCH farther to get the same amount of drive in any situation, when compared to a <2007 bike.

It is almost not possible on the FBW bikes to call up full throttle without grabbing 2 handfuls of throttle.
 
#31 ·
I installed a yoyodyne quick turn throttle on my '07 awhile back and it does exactly what you're looking for.
 
#15 ·
went from a k6 gixxer1000 to the 07 r1 last November, and have been commuting in traffic since with the odd fast spin
took a lot of gettin used to, it is dead below 4000rpm, and as said above you need to be merciless with the throttle, pin it to the stop to get full power
but the top end is very nice and the more time i spend on it the more i like it
 
#18 ·
it is dead below 4000rpm

:stpd:



My bike begins to come alive at 5k revs. When I reach 6k revs, it pulls like a MOFO all the way to redline. I usually never see double digits on the tach. When I get into the power on my 00, it's usually in between 6-9k rpm's. Being that my bike is one of the first generations, it pulls hard as fuck in between 6-9k revs. It pulls so hard, that it really needs a steering dampener :scared
 
#16 ·
I have a 2008 R1, my first so I don't know if this is just normal for the R1 or not! I only have 300 miles on it right now. the engine revs good in neutral and above 4000rpm`s, but getting to 4000rpm`s it feels almost like its bogging down. I want to say its almost like a low rumbling hard vibration from the engine with slow acceleration. becomes more pronounced with harder acceleration.
I have a 00 R1 that has the same characteristics as you describe. I have always thought that it was a normal characteristic of the bike, but I have read that the earlier R1's were known for having more usable torque down lower in the rev range compared to the newer R1's, so I wasn't 100% sure if this characteristic was normal or not.

If I'm at say, 2,500-3,500 rev's, in say 2nd gear, the bike will run great with slow, minimal, progressive throttle input. On the other hand, If I apply too much throttle, I experience a vibration. Increasing the throttle at this engine speed (say 2,500 revs all the way as high as 4,000 revs) does not have an effect on acceleration, meaning it does not accelerate more, it just causes the vibration. Just like you said it becomes (the vibration) more pronounced with harder acceleration (more throttle/too much input).

AT 4,000 revs, I can start to apply more throttle, and the bike will run well, but I still can't crack the throttle all the way open without experiencing even a slight vibration till I am at least 4,500-5,000 revs.

If I am cruising on the highway in 4th or 5th gear, my bike will run very well at in between 3,700-4,200, as long as I don;'t apply TOO MUCH THROTTLE. In terms of cruising, I would say that my bike runs the best in between 4,700-5,000 revs.

After reading your post, I am convinced that the vibration with heavy throttle input at in between 3-4k rpm's is a normal charicteristic of the bike. I just thought that being it is a 1,000 cc machine, and the fact that it is one of the earlier models (the earlier models being known for having more low rpm grunt) it would have more grunt in between 3,500-4,500 revs.

My plan, when I have more time/money, is to have the carb's re-sync'd, and have the carb's re-jetted and see if that makes a difference. Ultimately, it definitely needs a gear change. I don't do a lot of high speed, (unless I'm in a straight line) so I think it would be a better bike for me to gear it lower.

I do a lot of riding on a real tight, twisty, steep mountain where I live. The road is so tight, that sometimes 2nd gear is too tall, but 1st gear would put me unnecessarily close to 6k revs. Like I said, I wish it had more usable torque down low, but the bike, ultimately needs to be geared lower.

As far as highway/freeway is concerned, I don't have one complaint. At 50-55 plus mph, it's a great bike, it's just on roads like the ''Oakville Grade'' that it is not well suited for.

A gear change will make my bike potentially a lot quicker from 0-100, (
Image
) as well as becoming more suited to tight ass twisty, steep mountainous roads.



 
#22 ·
I have a 00 R1 that has the same characteristics as you describe. I have always thought that it was a normal characteristic of the bike, but I have read that the earlier R1's were known for having more usable torque down lower in the rev range compared to the newer R1's, so I wasn't 100% sure if this characteristic was normal or not.
that is NOT normal for earlier R1's.

you have a jetting issue & need to rebuild/rejet your carbs.
also check if you have a clean air filter & fuel filter.
 
#26 ·
yeah, that's the way the bike is, the way the motor is, under 4k it's a fart, but after 4k, that thing pulls like an animal, i love it, my last bike was a K6 gixxer 1000, and that bike was an animal down low(even under 5K), but didn't have the pull from 9K -up this 07/08 R1 has.....it's a different ride, i like how it stays planted when you take off, makes it a lot more rideable...
 
#28 ·
I have an 07 R1 after coming from a K6 1000, and experianced the same thing. I now have 1000mls on her and the engine has loosened off now and the vibration is no where near as evident.
I have noticed though that the 07-08 engines are more vibey than previous generations.
If I cruise at 90mph in top you can feel a constant vibe through the seat.
Without a doubt the 07's are better handling and faster than the 06's, but I don't think they are as road friendly, suspensions harsher, engines harsher etc, and I've also noticed it's much harder to get off and on the power smoothly, you sometimes get a jolt.

Changing the subject slightly, I rode my mates brand new 08 ZX10 yesterday, and without slagging off the R1 in anyway, that will be my next bike!
I never took it above 7000rpm as it only had 20mls on it, but it was the smoothest, best suspended, easiest bike I've ever ridden.
 
#30 ·
Like some have been saying, it's a track bike. Yamaha doesn't want a track bike that pops a wheelie every turn. In racing, you only see low RPMs as the start anyway. As for using it as a street bike, get some gears if it bothers you too much. You shouldn't worry about losing top end. How many times will you top the bike out compared to how many times you will launch quick?