The following warnings occurred:
Warning [2] Undefined variable $search_thread - Line: 60 - File: showthread.php(1617) : eval()'d code PHP 8.1.31 (Linux)
File Line Function
/inc/class_error.php 153 errorHandler->error
/showthread.php(1617) : eval()'d code 60 errorHandler->error_callback
/showthread.php 1617 eval



Austinsevenfriends › Austin Seven Friends Forum › Forum chat... v
Ruby carb jetting change running on SWB?

Thread Rating:
  • 1 Vote(s) - 5 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Threaded Mode
Ruby carb jetting change running on SWB?
JonE Offline
....
*****
Joined: Aug 2017 Posts: 3,329 Threads: 372
Reputation: 16
Car type:
#1
19-12-2021, 11:26 AM
Has anyone found that the Ruby sidedraft Zenith has benefited from different jetting when running on a smaller lighter earlier car? Would be interested to hear any experimentation.
https://ulster7.wordpress.com https://sevenrk.wordpress.com/
Reply
AustinWood Offline
Posting Freak
*****
Joined: Aug 2017 Posts: 989 Threads: 6
Reputation: 12
Location: Scottish Borders
#2
19-12-2021, 11:41 AM
Sounds unlikely.
Jim
Reply
Howard Wright Online
Grey Mag editor
*****
Joined: May 2018 Posts: 2,121 Threads: 111
Reputation: 22
Location: Llandrindod Wells
Car type: 29 Special, 30 RK, 28 C Cab
#3
19-12-2021, 12:21 PM
Hi Jon

My opinion (and it is just that) is that carb set up is fully dependent on engine characteristics and not on the weight of the car!

Cheers

Howard
Reply
Ivor Hawkins Offline
Mechanically sympathetic
*****
Joined: Aug 2017 Posts: 1,661 Threads: 23
Reputation: 15
Location: The village of Evenley
Car type: 1934 Austin Seven RP Deluxe
#4
19-12-2021, 01:05 PM
Hi Jon, I ran a three bearing motor in a Chummy for years on the standard Ruby jetting and it ran perfectly, with a good plug colour and excellent fuel consumption.

If it ain’t broke...!
Reply
JonE Offline
....
*****
Joined: Aug 2017 Posts: 3,329 Threads: 372
Reputation: 16
Car type:
#5
19-12-2021, 01:38 PM
good. that's what I need to hear. Thanks all.
https://ulster7.wordpress.com https://sevenrk.wordpress.com/
Reply
Bob Culver Offline
dogged member, NZ
*****
Joined: Aug 2017 Posts: 2,748 Threads: 31
Reputation: 95
Location: Auckland, NZ
#6
19-12-2021, 08:34 PM (This post was last modified: 21-12-2021, 03:38 AM by Bob Culver.)
Exhaust sytems affect optimum jets . For some reason unobstructed sytems seem to run more rich. Side exit possibly represent such. My RP feell from 50 to 40 mpg when a lightly baffled silencer fitted.
Reply


Forum Jump:


Users browsing this thread: 1 Guest(s)