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larger updraft carbs?

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larger updraft carbs?
Howard Wright Offline
Grey Mag editor
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Joined: May 2018 Posts: 2,126 Threads: 111
Reputation: 22
Location: Llandrindod Wells
Car type: 29 Special, 30 RK, 28 C Cab
#2
19-11-2021, 09:26 AM
Hi Jon

You can bore out the 22FZ Venturi and the original updraft manifold. Thinning down the butterfly will also help.

I’ve done this on a carb ready for my RK engine build (just back from having a rebore and rods white metalled). But I don’t know how it performs in practice. Hopefully a useful increase and no visible modifications externally.

Cheers

Howard
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Messages In This Thread
larger updraft carbs? - by JonE - 19-11-2021, 09:07 AM
RE: larger updraft carbs? - by Howard Wright - 19-11-2021, 09:26 AM
RE: larger updraft carbs? - by Henry Harris - 19-11-2021, 09:54 AM
RE: larger updraft carbs? - by Bob Culver - 19-11-2021, 10:01 AM
RE: larger updraft carbs? - by Parazine - 19-11-2021, 10:18 AM
RE: larger updraft carbs? - by JonE - 19-11-2021, 11:57 AM
RE: larger updraft carbs? - by Parazine - 19-11-2021, 01:01 PM
RE: larger updraft carbs? - by Ian Williams - 19-11-2021, 07:50 PM
RE: larger updraft carbs? - by JonE - 20-11-2021, 10:22 PM
RE: larger updraft carbs? - by Howard Wright - 20-11-2021, 10:49 PM
RE: larger updraft carbs? - by Ian Williams - 21-11-2021, 07:15 AM
RE: larger updraft carbs? - by JonE - 21-11-2021, 09:15 AM
RE: larger updraft carbs? - by Ian Williams - 21-11-2021, 10:02 AM
RE: larger updraft carbs? - by JonE - 21-11-2021, 03:04 PM
RE: larger updraft carbs? - by Bob Culver - 21-11-2021, 11:31 PM
RE: larger updraft carbs? - by JonE - 23-11-2021, 09:15 AM

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