The Ford Barn

ckulchar · 11-25-2022, 07:37 PM

Can someone verify the thread size on a Simmons idle jet? The thread size on a Zenith idle jet is M5x.75 metric.

Other than the thread size possibly different. Is there any other difference in the idle jet compared to a Zenith?

Thanks in advance
Charley

ckulchar · 11-25-2022, 08:11 PM

Was just looking at a Simmons thread by Purdy Swoft dated 12-21-2012. He listed photos but they are no longer with the thread.

Here is the idle jet, it is similar but about 1/8 inch longer than the Zenith idle jet and the threads are different.

Gary WA · 11-25-2022, 08:22 PM

10/32 nc? not same threads as zenith! try a tap to make sure or a 10-32NC screw to verify. length is the same: cap jet same threads as idle jet in simmons

ckulchar · 11-25-2022, 08:48 PM

Thanks for the reply Gary.

Charley

katy · 11-26-2022, 10:48 AM

10-32 is NF, 10-24 is NC #10 is AKA 3/16"

Gary WA · 11-26-2022, 03:10 PM

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Quote:

Originally Posted by katy

10-32 is NF, 10-24 is NC #10 is AKA 3/16"

correct you are. Have to verify the threads again!

ckulchar · 11-26-2022, 04:46 PM

Gary, idle jet and comp jet are 10-32 as you stated. Maybe Renners has the idle jets?

Charley

Gary WA · 11-26-2022, 05:41 PM

Quote:

Originally Posted by ckulchar

Gary, idle jet and cap jet are 10-32 as you stated. Maybe Renners has the idle jets?

Charley

http://www.rennerscorner.com/index.html don't think they do but you can call to check

11-25-2022, 08:11 PM	#2
ckulchar Senior Member Join Date: May 2012 Location: Amherst Ohio Posts: 157	Re: Simmons carburetor idle jet question Was just looking at a Simmons thread by Purdy Swoft dated 12-21-2012. He listed photos but they are no longer with the thread. Here is the idle jet, it is similar but about 1/8 inch longer than the Zenith idle jet and the threads are different.

11-25-2022, 08:22 PM	#3
Gary WA Senior Member Join Date: May 2010 Location: Clinton,WA/Whidbey Island Posts: 4,613	Re: Simmons carburetor idle jet question 10/32 nc? not same threads as zenith! try a tap to make sure or a 10-32NC screw to verify. length is the same: cap jet same threads as idle jet in simmons __________________ www.whidbeymodelaclub.com

11-25-2022, 08:48 PM	#4
ckulchar Senior Member Join Date: May 2012 Location: Amherst Ohio Posts: 157	Re: Simmons carburetor idle jet question Thanks for the reply Gary. Charley

11-26-2022, 10:48 AM	#5
katy Senior Member Join Date: Jun 2015 Location: Red Deer, Alberta Posts: 6,075	Re: Simmons carburetor idle jet question 10-32 is NF, 10-24 is NC #10 is AKA 3/16" __________________ If you don't hear a rumor by 10 AM, start one!. Got my education out behind the barn!

11-26-2022, 04:46 PM	#7
ckulchar Senior Member Join Date: May 2012 Location: Amherst Ohio Posts: 157	Re: Simmons carburetor idle jet question Gary, idle jet and comp jet are 10-32 as you stated. Maybe Renners has the idle jets? Charley Last edited by ckulchar; 11-26-2022 at 07:27 PM.

11-25-2022, 07:37 PM	#1
ckulchar Senior Member Join Date: May 2012 Location: Amherst Ohio Posts: 157	Simmons carburetor idle jet question Can someone verify the thread size on a Simmons idle jet? The thread size on a Zenith idle jet is M5x.75 metric. Other than the thread size possibly different. Is there any other difference in the idle jet compared to a Zenith? Thanks in advance Charley