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Tuber Running Query
https://www.ukbeg.com/forum/viewtopic.php?f=8&t=2419		 Page 1 of 2
Author:  bueller ball breaker [ 02 Sep 2009 16:59 ]
Post subject:  Tuber Running Query
My M2 seems to run better accelerating than holding a constant throttle :?
I went for a slightly longer run on sunday :shock: and it just felt rough holding a constant throttle about 4K revs but wind it on and it feels a whole lot better.
From low revs it feels sweet and feels well rorty but now seems to gasp a bit in the middle if not pulling hard on the throttle.

It runs 42 mikuni Buell race pipe oval k&N carbon filter,race ignition
I think it needs a good service by :maz: but i think i will have to sell a kidney on Ebay first :lol:
Author:  Beef [ 02 Sep 2009 19:57 ]
Post subject:  Re: Tuber Running Query
It may be running slightly lean on a constant throttle, and when you crack open the throttle, the?? (I can't remember what it's called- but it's the one you see squirting fuel into the venturi on opening the throttle) is alleviating your problems. you could try lifting the main jet a notch. Also make sure you have the right needle in-some Mikunis have different needles as standard-all depends where you got it from. If you are in the South, Mayors Motorcycles are very good at seeting carbs up on their rolling road, they have an exhaust gas analyzer which makes sure its bob on.

There's also Moore Speed Racing down South, but I have no idea whether they have an exhaust gas analyzer.....Tubbs will be able to answer that.

HTH
Author:  pash [ 02 Sep 2009 20:00 ]
Post subject:  Re: Tuber Running Query
Beef wrote:
..the?? (I can't remember what it's called- but it's the one you see squirting fuel into the venturi on opening the throttle) is alleviating your problems...


Accelerator pump... ;)

Beef wrote:
you could try lifting the main jet a notch.


Surely the needle :?

Beef wrote:
There's also Moore Speed Racing down South, but I have no idea whether they have an exhaust gas analyzer.....Tubbs will be able to answer that.


Indeed they do... :D
Author:  Beef [ 02 Sep 2009 20:21 ]
Post subject:  Re: Tuber Running Query
Thankyou Pash...yes I meant Needle, but my mind was still trying to think of accelorator pump-and it's 30degrees here, and I've been running around in it all morning!!! :lol: :lol: :lol: :lol:
Author:  tubbs [ 02 Sep 2009 20:25 ]
Post subject:  Re: Tuber Running Query
fit a cv carb :rofl: :rofl: sorry i will stop it :uhoh:
Author:  bueller ball breaker [ 02 Sep 2009 20:35 ]
Post subject:  Re: Tuber Running Query
No sniggering,pay attention at the back
:hehe:
main jet #160
pilot jet #25
air screw 2 1/4 turns out
needle type 96 on clip #3
accelerator jet #60
Author:  thorkill the tall [ 02 Sep 2009 21:27 ]
Post subject:  Re: Tuber Running Query
tubbs wrote:
fit a cv carb :rofl: :rofl: sorry i will stop it :uhoh:


Convert it to FI - even better.
Author:  chris(madrid) [ 03 Sep 2009 06:23 ]
Post subject:  Re: Tuber Running Query
Beef wrote:
Thankyou Pash...yes I meant Needle, but my mind was still trying to think of accelorator pump-and it's 30degrees here, and I've been running around in it all morning!!! :lol: :lol: :lol: :lol:
30 - Unless you're talking ºF in which case running about seems fine - 30 is what it was here yesterday by 9AM.
Author:  Beef [ 04 Sep 2009 01:56 ]
Post subject:  Re: Tuber Running Query
30 degrees centigrade Chris, and you're welcome to fly over and join me for a morning of 'running' around and see if it really is that easy-37 here today :!: :roll:
Author:  bueller ball breaker [ 04 Sep 2009 06:02 ]
Post subject:  Re: Tuber Running Query
Well thanks for hijacking the thread :headbang:
Author:  bueller ball breaker [ 04 Sep 2009 06:04 ]
Post subject:  Re: Tuber Running Query
bueller ball breaker wrote:
Well thanks for hijacking the thread :headbang:



this section is moderated as we like to keep this purely for technical questions and resolutions so that other folk can also read easily to find solutions etc ... to do this we keep spam and unrelated chatter to a minimum, pop over to the social section for a good natter, or Buell Chat to talk about the bikes in general!

Thanks folks, happy riding!

_________________
Author:  pash [ 04 Sep 2009 06:36 ]
Post subject:  Re: Tuber Running Query
Did you get the answer you wanted?
Author:  thorkill the tall [ 04 Sep 2009 16:57 ]
Post subject:  Re: Tuber Running Query
bueller ball breaker wrote:
bueller ball breaker wrote:
Well thanks for hijacking the thread :headbang:



this section is moderated as we like to keep this purely for technical questions and resolutions so that other folk can also read easily to find solutions etc ... to do this we keep spam and unrelated chatter to a minimum, pop over to the social section for a good natter, or Buell Chat to talk about the bikes in general!

Thanks folks, happy riding!

_________________


He's right, you know. Where's GM ;)

Still those posts still earn him one of these:

Image
Author:  bueller ball breaker [ 07 Sep 2009 15:50 ]
Post subject:  Re: Tuber Running Query
bueller ball breaker wrote:
No sniggering,pay attention at the back
:hehe:
main jet #160
pilot jet #25
air screw 2 1/4 turns out
needle type 96 on clip #3
accelerator jet #60


Well bit the bullet and had it dynoed today and it was waaay to rich everywhere apart from when it was on the main jet at full throttle and gave out 88.56 at 6372.8rpm and 78.95 ft/lb at 4217.6rpm.

The bloke said this was pretty good but i needed to run a leaner needle because anything below the main jet was mega rich :?
Any thoughts :4roz:
Author:  Beef [ 08 Sep 2009 01:48 ]
Post subject:  Re: Tuber Running Query
Look to see what setting your needle is on, if you cannot lower it (IIRC raising richens lowering leans) Get a leaner needle :!:
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