vance and hines exhaust - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 4 (permalink) Old 11-08-2011, 05:19 PM Thread Starter
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vance and hines exhaust

do i need to rejet the carb after installing a vance and hines exhaust? if so where do i get the jet kit for the bike?
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post #2 of 4 (permalink) Old 11-08-2011, 06:34 PM
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no..you do not need to rejet.





Jeff Brooks
Owensboro KY
'94 Vulcan 750

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post #3 of 4 (permalink) Old 11-08-2011, 08:13 PM Thread Starter
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thanks
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post #4 of 4 (permalink) Old 11-09-2011, 11:51 PM
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I had to rejet. The Vulcan runs on the lean side to begin with, and it was too lean with those pipes. Plug insulators were white, and it took forever to warm up, and had flat spots. I went up one size on the main and pilot jets, and turned the pilot screws out about 3 turns. It ran perfectly. Other than that horrible racket at highway speed. I live at 1200 feet. if you live a lot higher, you might be able to squeeze by without rejetting. Put the pipes on, and see how it runs. Put in a new set of plugs, and ride about 100 miles. Then remove the plugs. The insulators (inside the engine) should be a nice dark tan color. If they are white or almost white, you are too lean. the combustion chamber temperature will be too high. It may not show up on the temp gauge, but it can burn both the pistons and the valves.

I am a motorcyclist, NOT a biker.


1997 Vulcan 750, purchased about a week ago
2006 Sportster 1200 Low
2013 Royal Enfield Bullet 500, converted to carb
2001 Yamaha XT225, heavily modified
2004 Honda Rebel 250
1979 Vespa P200E
2002 Vulcan 750 parts bike
1994 Yamaha XT225 parts bike
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