Jetted, but need to go back to stock exhaust...
Forum rules
Please can you post items for sale or wanted in the correct For Sale section. Items / bikes for sale here will be removed without warning. Reasons for this are in the FAQ. Thanks
Please can you post items for sale or wanted in the correct For Sale section. Items / bikes for sale here will be removed without warning. Reasons for this are in the FAQ. Thanks
-
- Settled in member
- Posts: 46
- Joined: Sun Jun 15, 2008 4:59 am
- Location: Japan
Jetted, but need to go back to stock exhaust...
Looking to take my RVF to it's first track day (not mine though), and the track I have chosen has a VERY strict noise limit requiring the stock exhaust. Currently I am running 112's all around with a washer under the needles, and a Yamamoto Half system- no other mods. Will downgrading my exhaust to stock cause problems like: poor running, fouling plugs, too rich? Thanks in advance!
P.S. the track is Laguna Seca.........
P.S. the track is Laguna Seca.........
-
- Site Supporter
- Posts: 1027
- Joined: Wed Apr 30, 2008 8:40 pm
- Bike owned: zx9r c1
- Location: killin,scotland
Re: Jetted, but need to go back to stock exhaust...
it may,you might find a flat spot in and around 6-7000rpm mark but it will not be anything major.
william
william
please,god,....give me the chance to prove that winning the lottery won't spoil me!!!
- jowyvfr
- Site Supporter
- Posts: 161
- Joined: Sat May 03, 2008 4:19 pm
- Bike owned: Aprilia rs125, nc30,..Van Van!
- Location: SW London
Re: Jetted, but need to go back to stock exhaust...
I. Did a similar thing and swoped over my 110+db twin stack for a stock exhaust. Bike ran like a turd. But I might just have got used to the stacks performance. It's back on now and no problems so far. Fingers crossed it's not too bad for it as may have to do it again in future.
-
- Settled in member
- Posts: 46
- Joined: Sun Jun 15, 2008 4:59 am
- Location: Japan
-
- Moderators
- Posts: 1798
- Joined: Sun Apr 06, 2008 11:25 am
- Bike owned: VFR400RR, CBR1000RR6
- Location: Belfast, Norn Iron
- Contact:
Re: Jetted, but need to go back to stock exhaust...
Just put it back to standard. Remove the exta washer, re-fit the standard jets and go enjoy yourself. No point in getting there and not have a running bike to enjoy it on.
PS, fit an on-board camera if you can
PS, fit an on-board camera if you can

Ducati 916, not worth a carrott
-
- Moderators
- Posts: 8172
- Joined: Fri Jul 04, 2008 1:01 pm
- Bike owned: CBR954
Re: Jetted, but need to go back to stock exhaust...
Yes I think the Camera's a must.
If it's just a case of swapping the end-can (which shouldnt' take long) i'd give it a try, I don't think 112's are rich enough to give it major problems, i'd leave the washer in at first as it usually cures the mid-range 'flatspot'
If it's just a case of swapping the end-can (which shouldnt' take long) i'd give it a try, I don't think 112's are rich enough to give it major problems, i'd leave the washer in at first as it usually cures the mid-range 'flatspot'
xivlia wrote:i dont go fast on this bike so really do not need a rear brake.. /
vic-vtrvfr wrote:Ask xivlia for help, he's tackled just about every problem u could think of...
-
- Settled in member
- Posts: 46
- Joined: Sun Jun 15, 2008 4:59 am
- Location: Japan
Re: Jetted, but need to go back to stock exhaust...
The entire Yamamoto exhaust will be removed and the original exhaust will be refit. Laguna Seca has 93 decibel sound limit strictly enforcedNeosophist wrote:Yes I think the Camera's a must.
If it's just a case of swapping the end-can (which shouldnt' take long) i'd give it a try, I don't think 112's are rich enough to give it major problems, i'd leave the washer in at first as it usually cures the mid-range 'flatspot'


So completely stock exhaust, with 112's all around- good to go? The only thing good about the stock exhaust is it will allow the camera to pick up the glorious gear whine.......
-
- Regular Member
- Posts: 893
- Joined: Wed Apr 30, 2008 7:39 pm
Re: Jetted, but need to go back to stock exhaust...
93dB? Facking hell, that's strict. Even a std bike with an aftermarket road legal exhaust would probably struggle.
Druid
Druid