Jet Kit Advice??????????? - Motorcycle-Journal Forums

drepka · 01-22-2005, 12:05 PM

I am buying some V&H classic II pipes for my '03 LC1500.
I have been told that I need a jet kit so that it will not run too lean. What would be the best application for this. Also looking at just the cobra jet kit it shows a drill bit as one of the necessary tools for instalation??? PLEASE HELP???!!!
Thanks in advance for your words of wisdom.

**Uncle Bob** · 01-22-2005, 08:34 PM

More often than not rejetting will be necessary but not always. as a general rule most bikes come lean from the manufacturer but this is not a 100% certainty.

Actually interesting to see so many riders wanting to rejet after switching exhausts when the bike was already lean before the new pipes. In other words the performance enhancing device actually hurts performance without the rejet.

Rejetting with the stock pipes would probably in most cases improve performance to about 90% of the rejet/pipe combo.

Cobra is a reputable outfit, and don't worry about the drill bit, there is a sealed tube that hides the air/fuel mixture ajusting screw, the bit is only to remove the "sealer" from this tube allowing access to the screw. This is on the outside of the carb, you won't be drilling inside the carb.

Do you need to rejet ? after installing the new pipe is the bike running better or not ? Try removing the air filter to see if it improves ( removing the air filter will allow more air therefore leaning out the mixture even more, I doubt this will improve anything ) then try partially covering the air intake ( reducing air will make the mixture richer, if this makes it run better then you need to rejet).

drepka · 01-23-2005, 08:16 AM

Thanks a billion for the advice. I guess I will put the pipes on and then see if it needs the jet kit. I wonder if this is a marketing tactic by the manufacturers? Also does anyone know where I can order a K&N air filter online for my bike?

Gixxerdale · 01-23-2005, 08:39 AM

Any K&N dealer can get one for the bike. Get K& N 's model number on line for your bike, walk in and get one at the local auto parts store. Better yet, your local Cycle Gear store.

http://cyclegear.com/stores/location_tx.cfm

v0lusia · 01-23-2005, 06:50 PM

http://www.motorcyclecarbs.com/ is also a good place, I bought my kit and K&N from them. They really know their stuff. They know things like.... the 3 screws you need to remove on the Volusia carb to rejet always strip. They include them in their $20 kit just in case. Even though you don't have a Volusia check them out.

01-22-2005, 12:05 PM	#1 (permalink)
drepka Newbie Joined: Jan 2005 Bike: 03 Intruder 1500 LC Location: Texas Posts: 7	Jet Kit Advice??????????? I am buying some V&H classic II pipes for my '03 LC1500. I have been told that I need a jet kit so that it will not run too lean. What would be the best application for this. Also looking at just the cobra jet kit it shows a drill bit as one of the necessary tools for instalation??? PLEASE HELP???!!! Thanks in advance for your words of wisdom.

01-22-2005, 08:34 PM	#2 (permalink)
Uncle Bob Site Admin & Squeegee Boy Joined: Dec 1969 Bike: 2003 Volusia SE Location: Montréal, Québec, Canada Posts: 107	More often than not rejetting will be necessary but not always. as a general rule most bikes come lean from the manufacturer but this is not a 100% certainty. Actually interesting to see so many riders wanting to rejet after switching exhausts when the bike was already lean before the new pipes. In other words the performance enhancing device actually hurts performance without the rejet. Rejetting with the stock pipes would probably in most cases improve performance to about 90% of the rejet/pipe combo. Cobra is a reputable outfit, and don't worry about the drill bit, there is a sealed tube that hides the air/fuel mixture ajusting screw, the bit is only to remove the "sealer" from this tube allowing access to the screw. This is on the outside of the carb, you won't be drilling inside the carb. Do you need to rejet ? after installing the new pipe is the bike running better or not ? Try removing the air filter to see if it improves ( removing the air filter will allow more air therefore leaning out the mixture even more, I doubt this will improve anything ) then try partially covering the air intake ( reducing air will make the mixture richer, if this makes it run better then you need to rejet). __________________ Yadda yadda yadda, whatever, they ain't going to listen anyway.

01-23-2005, 08:39 AM	#4 (permalink)
Gixxerdale Forensic Bug Splatter Analyst. Joined: Mar 2004 Bike: 02 GSXR 1k Location: The warm and twisty roads of SoCal Posts: 3,028	Any K&N dealer can get one for the bike. Get K& N 's model number on line for your bike, walk in and get one at the local auto parts store. Better yet, your local Cycle Gear store. http://cyclegear.com/stores/location_tx.cfm __________________ Proud Father of a U S Army Soldier... The key to life is to die young...at a very old age... Ride like you own the road...and...someday the road will own you.. My Favorite Ride? Tomorrows!

01-23-2005, 06:50 PM	#5 (permalink)
v0lusia TurtleWax Taster Joined: Oct 2004 Location: Central MA Posts: 554	http://www.motorcyclecarbs.com/ is also a good place, I bought my kit and K&N from them. They really know their stuff. They know things like.... the 3 screws you need to remove on the Volusia carb to rejet always strip. They include them in their $20 kit just in case. Even though you don't have a Volusia check them out. Last edited by v0lusia; 01-23-2005 at 06:56 PM.

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01-23-2005, 08:16 AM	#3 (permalink)
drepka Newbie Joined: Jan 2005 Bike: 03 Intruder 1500 LC Location: Texas Posts: 7	Thanks a billion for the advice. I guess I will put the pipes on and then see if it needs the jet kit. I wonder if this is a marketing tactic by the manufacturers? Also does anyone know where I can order a K&N air filter online for my bike?

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