Re: Increase Zenith Stromberg Idle

Roger Searle

Thanks Larry.

-----Original Message-----
From: Larry Macy <lmacy@...>
To: PhillyMGClub <>
Sent: Thu, May 3, 2018 8:52 am
Subject: Re: [PhillyMGClub] Increase Zenith Stromberg Idle

Whew, it has been a very long time since I was looking at a ZS carb. I threw mine away and put a downdraft weber on my midget. However, I seem to recall, the idle adjustment is under the plastic cap on the side of the dashpot. It only has so much adjustment, then disassembly/reassembly is required. I hope I am remembering this thing correctly.

The Weber is much easier to adjust and maintain. If the ZS has bad wear, it can be rebuilt, but at the same cost as switching to the Weber. 

Good luck.



Larry B. Macy, Ph.D.

We do not inherit the land from our ancestors, we borrow it from our children.
Native American Saying

On May 2, 2018, at 3:37 PM, searlerb via Groups.Io <searlerb@...> wrote:

Hi All,

Does anyone have information on increasing the idle on the ZS carb. in my 1978 B?  It has an automactic/thermostatic choke.  It was repaired by a mechanic late last year and worked fine in the cold weather.  Now that it's warmer the thermotstat depresses the idle too low.



1971 MGB GT
1978 MGB Roadster (original owner)

Join { to automatically receive all group messages.