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Discussion Starter · #1 ·
I want to get rid of the stock can. I'm thinking Two Brothers Carbon slipon or Full Exhaust. Now, if I Full Exhaust I have to rejet. Question is, how difficult would it be and do I need to dino it to get a proper setup. If I have to dino, I might just as well get the slipon as I don't know of a good dino place in my area....unless anyone could help me out....

Rob
 

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Hey Rob,

You're in luck. Many of the SV650 owners who have come before you have already tested every type of jetting/pipe/intake configuration there is for that bike (especially Jack Roe, who ran 50-odd dyno runs trying all types of configs).

You should rejet the bike even if you only install a slip-on because the bike comes very lean from the factory, and a freer-flowing exhaust would only exacerbate the problem.

As a baseline, if you get a Two-bros exhaust, and perform the snorkelectomy, you will use this setup for your carbs:

152.5 mains
15 pilots
2 shims under the needle
3 turns on the fuel/air mixture screw

Results may vary depending on your altitude/exhaust... but there are a bunch of people on the SV650 list (svrider.com) that have a Two-Bros full exhaust that have found a happy setting.

As far as difficulty goes, if you have someone show you how to do it the first time it's a breeze.

 

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Discussion Starter · #3 ·
Would there happen to be a link where I could look at the different configurations that Jack Roe did on the dyno runs? I think that you be very interesting to see what changes he did the the results.

Rob
 

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http://www.svrider.com

http://www.svrider.com/articles/2001jul_carbs.htm

Since that article was written I think there has been a change to the general concensus. Whereas Jack originally advised 17.5 pilots and 2.5 turns, some people have found better results with 15 pilots and 3 turns.

I, myself, have an Vance and Hines exhaust with the snorkelectomy. I'm running 150 mains, 17.5 pilots, 2 shims, and 2.5 turns. I tried the 15 pilots/3 turns for a few days, and though the throttle response was ever so slightly improved the motor didn't seem to have the same kind of grunt. So I've gone back to the 17.5/2.5 turns.

*Your mileage may vary*

Feel free to experiment. Feel free to email other SV riders with Two-bros exhaust:
http://www.datacurrent.com/cgi-bin/sv-search.cgi?type=Exhaust&manufacturer=Two+B&product-name=&search_mod=Search

 

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I have a 98 GSXR 600 with a 2 bros carbon slip-on. After having it dynoed, I had to jet it, because my air/fuel ratio was so off. After the jetting ( main jet only )
It ran much much better.
 
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