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General Category >> Rubber Side Down! >> Carb jets
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Message started by k9500winmag on 02/12/12 at 13:22:58

Title: Carb jets
Post by k9500winmag on 02/12/12 at 13:22:58

Is there a way to tell what size jets are in the carb? The previous owner/ builder re-jetted it but doesnt remember which ones he used. Im thing of going with a cherry bomb to replace this straight pipe. Im not overly concerned with backfires on decel or the whoompf sound in shutdown. In fact i like the whoompf sound hahahaha but any help if i do go this route will be appreciated. Planned to put a sharper bend (u-bend) and run the pipe on TOP of the trans due to where my foot controls are, straight back and dump down next to the axle, then wrap it all with a fiberglass wrap to keep it uniform. And as you can see its running a cone filter.. So any advice will be welcome, or ideas. Whatever keeps me from being so prone to noise violations. But I will need tips on the tuning once its together.

Title: Re: Carb jets
Post by k9500winmag on 02/12/12 at 13:24:50

This is the carb and air cleaner

Title: Re: Carb jets
Post by verslagen1 on 02/12/12 at 13:42:03

only way is to drop the bowl and put an eyeball on it.

http://www.getsmileyface.com/new/orange_smileys/57.gif

Title: Re: Carb jets
Post by k9500winmag on 02/12/12 at 14:07:09

Is there a number stamped on it or do i tell by putting a set of venier calipers to it?

Title: Re: Carb jets
Post by arteacher on 02/12/12 at 14:11:10

The number is stamped on them, although you might need a magnefying glass to see them. ;D

Title: Re: Carb jets
Post by verslagen1 on 02/12/12 at 14:51:50

number stamped on the side facing down.

Title: Re: Carb jets
Post by spacepirates on 02/12/12 at 14:52:11

The number is stamped next to a square symbol on both jets.

on the main jet, you can look at it without taking it out, as the number is stamped on the top. however, on the pilot jet, the number is stamped on the side so you'll have to pull that one out.

Use as big of a screwdriver as you can and be careful not to mar the heads of the jets as they are soft brass.

Title: Re: Carb jets
Post by k9500winmag on 02/12/12 at 15:03:39

Good to know guys. Thanks. Does anyone have issues with thier bike not wanting to start when its cold? What could cause this? Too rich maybe?

Title: Re: Carb jets
Post by verslagen1 on 02/12/12 at 15:11:19

How cold?
and what do you do to start?
what do you in the summer?

Title: Re: Carb jets
Post by k9500winmag on 02/12/12 at 15:15:54

Anything below 70 and she doesnt like to start at all. I let it turn over for aboit 2 seconds at a time touching the throttle a bit but nothing. Warmer days it starts right up but still needs half choke for a minute before it will idle. Thinking on cold mornings im going to take a hair blower to it to preheat it.

Title: Re: Carb jets
Post by verslagen1 on 02/12/12 at 16:07:09

5D0F030606415F585B5751360 wrote:

Your idle jet sounds a tad lean.
You don't choke it at all to start?
Sounds like full choke is called for.

Title: Re: Carb jets
Post by k9500winmag on 02/12/12 at 16:31:49

I will give it a shot once the batt is charged again lol killed mostly dead trying this morning. Ooooops

Title: Re: Carb jets
Post by Serowbot on 02/12/12 at 17:04:24

What oil is in the bike?...
If you just got it, and don't know,... change it... it might be too heavy (like straight 30w)... use a 10w40. or even a 5w50 for winter and she'll crank easier...
Is you battery pretty new?...

Title: Re: Carb jets
Post by k9500winmag on 02/12/12 at 17:07:53

Batt is older, going to get a new one anyways and put the 10w40 oil in it. Once I get into doing this new exhaust ive got to play with tuning as well.