jetting

Erik Weber yoober at gmail.com
Wed Oct 3 10:01:44 PDT 2007


Alright, thanks.

On 10/3/07, Ernest Montague <afm199 at earthlink.net> wrote:
> shim needles 40 thou and change pilots to 17.5 minimum.
>
>
> On Oct 3, 2007, at 9:23 AM, Erik Weber wrote:
>
> > I would like to jump in on this thread while it's on your minds.
> >
> > My airbox, filter and exhaust are all stock.
> >
> > I am planning to go to a full system. I want to build for superbike so
> > I am looking for the lightest system, which I assume is the "deluxe"
> > M4 full system.
> >
> > My bike has standard first gen S gearing. Pulls great once you get
> > rolling but not so great out of slower turns.
> >
> > So, what should I do with jetting to get a little better midrange
> > without sacrificing top end? Or what's a good baseline jetting for M4
> > full system with stock airbox and filter?
> >
> > Thanks,
> > Erik
> >
> >
> > On 10/3/07, KC Gager <kc at brgracing.com> wrote:
> >> We have played with all the needles that are out there. None are
> >> perfect.
> >> But like I said have bring it by and we can get you pointed in the
> >> right
> >> direction.
> >> KC Gager
> >> BRG Racing Products
> >> "We Have Sickness For Quickness"
> >> KC at brgracing.com
> >> http://www.brgracing.com
> >> (925)672-5789
> >>
> >>
> >> -----Original Message-----
> >> From: Ernest Montague [mailto:afm199 at earthlink.net]
> >> Sent: Wednesday, October 03, 2007 8:51 AM
> >> To: Suzuki SV650 Mailing List
> >> Subject: Re: jetting
> >>
> >> KC;
> >>
> >> Actually it is for Ian Gillies, he picked up a bike for the track. The
> >> factory (Salvisberg) needle is mid clipped AND shimmed 40 thous and I
> >> think that is wayyy to fat.
> >>
> >> Thanks though.
> >>
> >> One of these days I will get over there.  Probably this winter.
> >>
> >>
> >> Ernie
> >>
> >>
> >> On Oct 3, 2007, at 8:38 AM, KC Gager wrote:
> >>
> >>> Ernie
> >>> More then likely the needle placement is off. If you want come by 65
> >>> buck
> >>> I'll base line it and tell witch way to go on the needle. I'm sure
> >>> you
> >>> can
> >>> change it with out help :-). Reno in most case wants more fuel up
> >>> there.
> >>>
> >>> KC Gager
> >>> BRG Racing Products
> >>> "We Have Sickness For Quickness"
> >>> KC at brgracing.com
> >>> http://www.brgracing.com
> >>> (925)672-5789
> >>>
> >>>
> >>> -----Original Message-----
> >>> From: Ernest Montague [mailto:afm199 at earthlink.net]
> >>> Sent: Wednesday, October 03, 2007 8:26 AM
> >>> To: Suzuki SV650 Mailing List
> >>> Subject: Re: jetting
> >>>
> >>> This is for a friend's bike that he got with 140 mains, a pipe, K&N,
> >>> and needles from factory.  The midrange at Reno Fernley sucks.   I
> >>> think the needles are too high, the mains too small and I am going
> >>> with
> >>> either a stock filter for the 140 mains, or 150s with the K&N and
> >>> pipe.  Also shim stock needles 40 thou and change pilot jets.
> >>>
> >>> Ernie
> >>>
> >>>
> >>> On Oct 3, 2007, at 8:21 AM, KC Gager wrote:
> >>>
> >>>> Was this east cost tuning or was in out here on the west cost. And
> >>>> yes
> >>>> there
> >>>> is a difference a big difference.
> >>>>
> >>>> KC Gager
> >>>> BRG Racing Products
> >>>> "We Have Sickness For Quickness"
> >>>> KC at brgracing.com
> >>>> http://www.brgracing.com
> >>>> (925)672-5789
> >>>>
> >>>>
> >>>> -----Original Message-----
> >>>> From: Jim Stewart [mailto:js at strappe.com]
> >>>> Sent: Saturday, September 29, 2007 6:36 PM
> >>>> To: Suzuki SV650 Mailing List
> >>>> Subject: Re: jetting
> >>>>
> >>>> Ernest Montague wrote:
> >>>>> OK guys, there is a stock formula that used to work pretty well for
> >>>>> gen
> >>>>> one carbs with a race pipe and aftermarket filter or opened up
> >>>>> stock
> >>>>> filter....
> >>>>>
> >>>>> Anyone remember?
> >>>>>
> >>>>> 148 mains?  I do remember shim the stock needles 40 thou.
> >>>>>
> >>>>> Ernie
> >>>>>
> >>>>
> >>>> Hi, Ernie -
> >>>>
> >>>> After half a million dyno runs, Jack Roe developed a formula for
> >>>> desnorkeled
> >>>>
> >>>> airboxes and race pipe: 152.5 mains, 17.5 pilots, two shims (.040")
> >>>> under
> >>>> the
> >>>> needle, pilot screw at 2.5 (I think). He later recanted and
> >>>> recommended the
> >>>> stock 15 pilots and 3 turns. He also recommended drilling out the
> >>>> bleed hole
> >>>> in
> >>>> the slide, but that didn't seem to make any difference on my bike.
> >>>>
> >>>> It turns out that the desnorkeled airbox is a bad choice for a
> >>>> street
> >>>> bike -
> >>>> big
> >>>> flat spot at 5K or so. Maybe it works for a racebike - others can
> >>>> surely
> >>>> tell you.
> >>>>
> >>>> I have my own preferred settings for a street bike, but you're
> >>>> interested in
> >>>>
> >>>> your racebike I assume...
> >>>>
> >>>> -js
> >>>>
> >>>> --
> >>>> http://www.strappe.com
> >>>>
> >>>>
> >>>>
> >>>>
> >>>
> >>
> >>
> >
>
>



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