View Full Version : Flat spots in Rev range on ZX6R
Today while riding down and back to weymouth i noticed that my bike (2007 ZX6R)has a few flat spots on the revv range. Noticable at about 8K , 11K and 13K.
Bearing in mind it is still being run in and covered only 570 miles so far i know i should not be doing those revs. But when opening the throttle from closed to open or heavy acceleration causes noticable flat spots at said rev range , any ideas what can be causing it guys??
after and berfore those revs its fine and dandy and after about !)K generally it flies, got to 123 in 3rd today :rolleyes: any help appriciated.
sv-robo
12-01-08, 07:02 PM
Bearing in mind it is still being run in and covered only 570 miles so far i know i should not be doing those revs.
so why are you?.......naughty boy:)
so why are you?.......naughty boy:)
cos its almost at the service point so thoughti would give it some moer beenz!! and its boring below 6K :rolleyes:
Biker Biggles
12-01-08, 07:27 PM
Get the first service done,then see if it still does it.If it does take it straight back to the dealer and get them to sort it.
Obviously dont mention it before as they will say you damaged it by not following the running in schedule.
Get the first service done,then see if it still does it.If it does take it straight back to the dealer and get them to sort it.
Obviously dont mention it before as they will say you damaged it by not following the running in schedule.
yeah i will, not noticed it before this afternoon. I did not let the bike warm up before riding home ,and it was cold so could be that. HOpe its nothind serious. I will take it back if after the first service and on a warmish day its still doing it. Just semed to take ages to build speed in any gear from about 7.5-8.5K on windingthe throtle open all the way. I know that to get the best out of the 6 you have to keep it above 10K but even so it annoyd me at noticing it!! :spiderman:
ASM-Forever
12-01-08, 08:27 PM
Do you mean throttle lag/snatchy throttle...in that there is a bit of hesitancy if you suddenly crack the throttle open? Thats not uncommon and can be cured with a PC/remap if it bothers you.
SHould have got an R6. HTH. :)
cos its almost at the service point so thoughti would give it some moer beenz!! and its boring below 6K :rolleyes:
The allegedly most important reason for the rev limit on running in is to de burr/swarf the engine and bed in the moving bits. The oil change is very important before sustained warp drive. The odd rev out should not harm it though and arguabely does it some good. Try it after the service, I know someone else with a ZX6R the same model as yours and will ask him if its the same. It's about the same age as yours.
Hi mate,ok so its not a bike ,but my car felt flat across the entire range,Jumped in it yesterday for the first time since christmas and because the misses had clocked up a few miles ,I could really feel the diff.As said above,get the service out of the way and give it time to free up
I know someone else with a ZX6R the same model as yours and will ask him if its the same. It's about the same age as yours.
Yeah please that would be great, thanks!!
Hi mate,ok so its not a bike ,but my car felt flat across the entire range,Jumped in it yesterday for the first time since christmas and because the misses had clocked up a few miles ,I could really feel the diff.As said above,get the service out of the way and give it time to free up
I hope its just an other change the engine is going through , as only noticed it yesterday. To start with i did run in as per book ut to about 300 mile i was carefull, then i started opening her up a bit. I know there are a few schools of thought on the run in process as wellall reckon its better for the bike.
Also i have just looked on the power curves in an old copy of Fast bikes mag and at around the revs i am describing the power band dips off of flattes of for a bit before picking up again.
First service next week and ill see if that makes any differance. If when i get to the 1000 mile mark its still doing it i ll be back to the dealer to get them to take it out and see if they think there is a problem with it!
I doubt you would get much joy from the dealer. Far better putting it on a dyno first so that you can go to the dealer armed with a piece of paper.
yorkie_chris
13-01-08, 03:03 PM
After the running in though, don't think it would do the warranty much good claiming to have written proof of screwing the balls off of a new engine. :p
I doubt you would get much joy from the dealer. Far better putting it on a dyno first so that you can go to the dealer armed with a piece of paper.
Good idea was thinking of doing that , it will either back up what i think or show its running normally.
chris8886
13-01-08, 03:57 PM
ask 'mr anderson' if he's had any trouble. he bought the same bike at about the same time as you (and very nice it is too). PM him or put a thread on the soho forum to ask him.
ask 'mr anderson' if he's had any trouble. he bought the same bike at about the same time as you (and very nice it is too). PM him or put a thread on the soho forum to ask him.
yes he did i remember about a week before i got mine. And IIRC he is using the Big bang running in Method as well. Ill Pm him and Ask, thanks for the reminder.
gettin2dizzy
14-01-08, 07:36 AM
don't worry. All ss600 have a flat spot of 0-11000rpm ;)
don't worry. All ss600 have a flat spot of 0-11000rpm ;)
hmm yes but then they fly
plowsie
14-01-08, 09:29 AM
I have a flat spot all the way across my revv range :D :smt026
SV650Racer
14-01-08, 09:41 AM
Good idea was thinking of doing that , it will either back up what i think or show its running normally.
Just take it in for the first service and also mention that you have this problem. Dont leave it just in case something really is wrong.
FGS not all dealers dont want to know:rolleyes: Give them a chance.:cool:
gettin2dizzy
14-01-08, 09:43 AM
hmm yes but then they fly
Hehe. I'm only joking. I think people forget that 7000rpm on a ss600 IS midrange, and they've got loads of torque; it just pales in to insignificance compared to when the full 120hp kicks in.
Just take it in for the first service and also mention that you have this problem. Dont leave it just in case something really is wrong.
FGS not all dealers dont want to know:rolleyes: Give them a chance.:cool:
yeah i think i will, but maention it happens at about a lowere rev , get them to check the fuelling or test ride it.
Hehe. I'm only joking. I think people forget that 7000rpm on a ss600 IS midrange, and they've got loads of torque; it just pales in to insignificance compared to when the full 120hp kicks in.
oh and the full on kick is very noticable, like a rocket up my ar*e!!
My colleague sat two feet from me looked mystified when I asked him about this.
He rides and identical 6R neio and says there's no flat spots anywhere in the range... As he says, there's a linear increase in go-go from 0-9K and then from 9K to 14K there's a rush of power until it tails off to the redline.
He's a big lad too, so he'd notice if it was lacking in power.
oh i agree from about 10K it is all go go go. I wil see next time i am out and see if its like it or its just me.
gettin2dizzy
14-01-08, 02:23 PM
I thought they'd just started having different maps for the run-in period? I'm sure I read about this somewhere. It would explain it.
I thought they'd just started having different maps for the run-in period? I'm sure I read about this somewhere. It would explain it.
what as in reched x ammount of miles change map to y and so ou untill a threshold is met and then its the real map?? Not heard that before.
gettin2dizzy
14-01-08, 03:37 PM
what as in reched x ammount of miles change map to y and so ou untill a threshold is met and then its the real map?? Not heard that before.
that the dealers change it between modes at the service intervals. I heard about it a while ago on these high revving high performance engines. Whether the kwak has one I don't know but a service will tell :)
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