UK Karting

Notice Board (General Karting)




Re: senior rotax carb's
Posted by 'Andrewrr' on 05 Aug 2009 @ 14:59


| View Message Thread | Reply to this message |
Andrewrr
Joined: August 2001
Total Posts: 1
[ View User Profile ]
Hi Ken,
the only difference between the carbs is the venturi progression hole size at the bottom of the venturi.

I think all new engines come with 8.5 now, but you can easily change the venturi to switch a carb from 8.5 to 12.5 or vicky verca.

The progression hole is only effective just as you open the throttle so theoretically you will get a leaner and hopefully cleaner pickup out of the corner.

It wouldn't make much difference if the track is twisty or long because the venturi throat size is identical.

You are better off altering the float heights on the 8.5 but you could probably get a 12.5 to work in exactly the same way as 8.5 by changing the float heights and it may in fact be better.

Message Thread:

senior rotax carb's  by 'bigboyatrye'   (05 Aug 2009 @ 13:15)
Re: senior rotax carb's  by 'lambstales'   (05 Aug 2009 @ 14:06)
Re: senior rotax carb's  by 'Andrewrr'  << You are here!
Re: senior rotax carb's  by 'harvinsurrey'   (05 Aug 2009 @ 15:59)
Re: senior rotax carb's  by 'TheStadiumkiller'   (06 Aug 2009 @ 0:31)
Re: senior rotax carb's  by 'TheStadiumkiller'   (06 Aug 2009 @ 11:28)
Re: senior rotax carb's  by 'bigboyatrye'   (06 Aug 2009 @ 15:21)
Re: senior rotax carb's  by 'SYMONCOCKILL'   (06 Aug 2009 @ 15:53)
Re: senior rotax carb's  by 'SYMONCOCKILL'   (06 Aug 2009 @ 15:54)
Re: senior rotax carb's  by 'TheStadiumkiller'   (06 Aug 2009 @ 21:09)
Re: senior rotax carb's  by 'heavyman'   (06 Aug 2009 @ 23:15)
Re: senior rotax carb's  by 'bigboyatrye'   (07 Aug 2009 @ 20:31)
Re: senior rotax carb's  by 'KenE'   (08 Aug 2009 @ 14:28)
Re: senior rotax carb's  by 'bigboyatrye'   (08 Aug 2009 @ 21:00)

Post a Reply:
You may post a direct reply to this message which will appear in this thread.
To post a new or unrelated message use This Form.
Reply To "Re: senior rotax carb's"
Email Address :   Not Registered? Click Here to register...
Password :   Passwords are Case Sensitive!   [ Password Lookup ]
Message Title / Subject :
Message :
Options : Subscribe to this thread?   [ More Information ]

Top of Page
Notice Board Index

[ UK Karting Main Index ]


News Karts and Karting Notice Board Market Place Companies Directory Tracks Directory Events Calendar Race Results Photo Gallery Links
News Karts &
Karting
Notice
Board
Market
Place
Companies
Directory
Tracks
Directory
Events
Calendar
Race
Results
Photo
Gallery
Links

UK Karting

Copyright © 1996-2018 UK Karting
Comments, Suggestions etc. mail@karting.co.uk