Why are there two different main jets? - Kawasaki Teryx Forums: Kawasaki UTV Teryx Forum
Kawasaki Teryx Performance Discussions Kawasaki Teryx performance discussions.
Engine mods, CDI boxes, exhausts, etc.

User Tag List

 
LinkBack Thread Tools Display Modes
post #1 of 6 (permalink) Old 06-09-2008, 05:26 AM Thread Starter
Senior Member
 
Join Date: May 2008
Posts: 3,999
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Why are there two different main jets?

I thought I knew the answer to why there are two different main jets in the carbs on a Teryx so I called my friend Mike Penland and ask. I thought it was because of the different length exhaust pipe and his answer was heat.

The front cylinder runs cooler than the rear due to air flow so they want the back cylinder to run slightly richer to compensate for that.

Makes sense to me.



Hunterworks is offline  
Sponsored Links
Advertisement
 
post #2 of 6 (permalink) Old 06-09-2008, 06:15 AM
TeryxHQ.com Staff Member
 
DougS's Avatar
 
Join Date: Apr 2008
Location: Alberta, Canada
Posts: 2,107
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 1 Post(s)
 
Just making an observation that I'm not 100% sure of the answer Also I think Mike is a great racer who still makes some products for Kawi quads. (I have his diff lock - the penlock) Too bad for Kawi he went to Can Am.

The engines are water cooled and the rad would block most air flow and equal the majority of the front wind flow loss compared to the back.

Also so why does everyone switch the jetting to the same size jet when they run aftermarket same length exhaust eg Muzzy? Is it the length of the exhaust pipe that affects the heat loss (or at least partially) and why it runs richer?

Last edited by DougS; 06-09-2008 at 06:24 AM.
DougS is offline  
post #3 of 6 (permalink) Old 06-09-2008, 01:42 PM Thread Starter
Senior Member
 
Join Date: May 2008
Posts: 3,999
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
That's what I thought but he assures it is because of the air. I won't argue either way. They are not enough off from one another to really matter.



Hunterworks is offline  
 
post #4 of 6 (permalink) Old 06-09-2008, 02:01 PM
CommanderTalk.com
 
dieselpowered's Avatar
 
Join Date: Feb 2008
Location: Peoria, AZ
Posts: 2,799
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
I have heard both reasons, head pipe length and air. In talking with some others, they said even it you run the same jets on stock pipes, it would not make that much of a different.




AllTerrainJournal.com --> www.AllTerrainJournal.com

I support every man and women in the armed forces, I wish you all the best and thank you!

2008 Kawasaki Teryx | 840cc BBK w/ stage III cams | FST long travel and HD steering | Twisted Stitch seats | FST cage | Muzzy dual exhaust | Dynatek prog CDI | aFe intake | HiPer carbon fiber beadlocks | Goodyear MT/Rs | Crow restraints | SafeGlo LED and FO whips | NightOwl HID conversion | Edge series 40" LED lightbar | Fuego Dual HID lights | Dalton clutch kit and OD cover | Full audio | Navigation | Power steering | TrailTech Vapor computer | Factory UTV skids | Airtite Art custom paint | Maier plastics
dieselpowered is offline  
post #5 of 6 (permalink) Old 06-09-2008, 07:46 PM
Senior Member
 
mouser58's Avatar
 
Join Date: Mar 2008
Location: New Martinsville, W.Va.
Posts: 180
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Send a message via AIM to mouser58
Hey Todd. Here's an experiment for you when you start the Dyno tests. After you put the muzzys on, try the dyno and check the individual cylinders with your air/fuel gauge without the muffler on. I know it would be exceptionally loud without the mufflers, but might help discount the offsejetting theory by being able to check each cylinder. Always someone trying to help you use up more of your valuable timee, huh. lol
mouser58 is offline  
post #6 of 6 (permalink) Old 06-09-2008, 08:42 PM Thread Starter
Senior Member
 
Join Date: May 2008
Posts: 3,999
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
 
Dude all I got is time, while this foot is broke and I am stuck in the recliner!!



Hunterworks is offline  
Sponsored Links
Advertisement
 
Reply

Bookmarks

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Kawasaki Teryx Forums: Kawasaki UTV Teryx Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome
 


1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88