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Austinsevenfriends › Austin Seven Friends Forum › Forum chat... v
cu carb

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cu carb
bruce legg Offline
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Joined: Mar 2022 Posts: 1 Threads: 1
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Location: brisbane
Car type: 1932 a7 metor
#1
29-03-2022, 03:09 AM
i have a 1/1/4 in carb for my austin 7 what size jets do i need cheers
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Ian Williams Offline
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Joined: Aug 2017 Posts: 1,715 Threads: 47
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Location: Auckland NZ
Car type: 36 Nippy, 31 RM, 38 Special, 24 Works Rep
#2
29-03-2022, 06:54 AM
You will need to provide a lot more information to obtain and answer which is relevant to your situation, if you have a standard unmodified engine the carb you have is too big and will never provide optimum performance.
Black Art Enthusiast
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Charles Levien Offline
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Joined: Aug 2017 Posts: 420 Threads: 19
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#3
29-03-2022, 08:08 AM
(29-03-2022, 06:54 AM)Ian Williams Wrote: You will need to provide a lot more information to obtain and answer which is relevant to your situation, if you have a standard unmodified engine the carb you have is too big and will never provide optimum performance.

If your engine is moderately tuned you could start with a no.6 needle and blue spring. It may be on the rich side but it’s what I use and seems to give a good performance.
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Tony Press Offline
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Joined: Aug 2017 Posts: 1,751 Threads: 43
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Location: Malvern, Victoria, Australia
#4
29-03-2022, 09:43 PM
CU ? SU ?
http://austin7club.org
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