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General Category >> Rubber Side Down! >> Carburetor Set UP/ One more time Please
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Message started by retired on 01/10/10 at 08:24:53

Title: Carburetor Set UP/ One more time Please
Post by retired on 01/10/10 at 08:24:53

For basic engine With K&N Cone filter and Harley muffler upgrade?I should use a #50 pilot jet , #150 main jet and 1/2 white washer ? Is this correct? Also where can I find a cone Filter with a 2 1/4" opening to fit the LS650? Thanks for your help!

Title: Re: Carburetor Set UP/ One more time Please
Post by mumbles on 01/10/10 at 09:37:24

The K&N cone filter part #
RC-1250 (chrome),
R-1250 (black).

Title: Re: Carburetor Set UP/ One more time Please
Post by mumbles on 01/10/10 at 09:40:25

Sorry forgot to post the link. ;) Also get with Lancer for the jets.
http://cgi.ebay.com/ebaymotors/K-N-CHROME-AIR-FILTER-RC-1250-UNIVERSAL-TAPERED-H2-750_W0QQitemZ230392340994QQcmdZViewItemQQptZMotorcycles_Parts_Accessories?hash=item35a4742202

Title: Re: Carburetor Set UP/ One more time Please
Post by T Mack 1 - FSO on 01/10/10 at 10:01:03

What year bike and where are you located??

- Some of the older LS650's had slightly different jets.
- Altitude and humidity also affect jetting.

But.... I think the 52.5 low might be better and if you'r running the louder HD muffler a 155 main may be closer to what you need.

Sorry, the best advice I can give is to experiment and to keep an eye on your sparkplug color. If the Ceramic is white, you're running lean. If it's black you're running too rich. It should be slightly tan in color.

Also, the perfect low speed jet should allow you, when adjusting the low speed /idle mixture, to get a reaction on both the lean side ( turning in) and on the rich side (turning out). Only problem, sometimes and conditions, the perfect low jet is in betweeen the ones you can buy :-/

Title: Re: Carburetor Set UP/ One more time Please
Post by retired on 01/10/10 at 10:27:32

I am working on a 1987 LS650. And I am located in Rocky Mount , NC. on the I-95 corridor .I dont think I am to mumh above sea level.

Title: Re: Carburetor Set UP/ One more time Please
Post by justin_o_guy2 on 01/10/10 at 15:39:06

Rocky Mount, NC 27801. Location. 35.94 N, 77.80 W. Elevation. 37m / 120ft. Population. 55,893 ...