The Ford Barn

guam2250 · 11-14-2022, 03:32 PM

Hello good people. Does anyone know if the idle jet(H32?) has a 3/8-24 thread? Thanks in advance.....

scicala · 11-14-2022, 05:53 PM

If you mean the actual idle tube/jet that screws into the bowl side of the nozzle bar, it's a special 1/4-32 thread.
If you mean the brass fitting (air bleed) in the middle of the nozzle bar it's also a speacial thread 3/8-32
Main jets are also 1/4-32, and there are taps on EBAY for 1/4-32.

Sal

guam2250 · 11-15-2022, 06:42 AM

Thanks so much for the reply and info!!!

guam2250 · 11-15-2022, 06:48 AM

This is the jet in question....

Terry,OH · 11-15-2022, 08:15 AM

The idle tube for the 94 has fine thread 1/4-32. The Stromberg idle tube has the same appearance but with a courser 1/4-24 thread.

guam2250 · 11-15-2022, 02:34 PM

Sponsored Links (Register now to hide all advertisements)

Ok, so this won't work. Anyone know of an equivalent, but with a 3/8-24 thread? Thanks all.

Mart · 11-15-2022, 03:01 PM

Would it be worth explaining what you are trying to do?

Some pictures might help.

guam2250 · 11-16-2022, 11:39 AM

Unsuccessful finding replacement main jet for alloy, Model A updraft carb by Simmons. I've attached a photo. Holley 94 jet looked similar, but wrong thread size; needs to be 3/8-24.

scicala · 11-16-2022, 06:47 PM

Quote:

Originally Posted by guam2250

Unsuccessful finding replacement main jet for alloy, Model A updraft carb by Simmons. I've attached a photo. Holley 94 jet looked similar, but wrong thread size; needs to be 3/8-24.

You could go to this Forum online and ask if anyone can help.

Sal

https://forums.aaca.org/topic/206897...-ford-model-a/

11-14-2022, 03:32 PM	#1
guam2250 Member Join Date: Jun 2018 Posts: 64	Holley 94 Hello good people. Does anyone know if the idle jet(H32?) has a 3/8-24 thread? Thanks in advance.....

11-14-2022, 05:53 PM	#2
scicala Senior Member Join Date: Jun 2010 Location: Detroit suburb, MI Posts: 3,706	Re: Holley 94 If you mean the actual idle tube/jet that screws into the bowl side of the nozzle bar, it's a special 1/4-32 thread. If you mean the brass fitting (air bleed) in the middle of the nozzle bar it's also a speacial thread 3/8-32 Main jets are also 1/4-32, and there are taps on EBAY for 1/4-32. Sal

11-15-2022, 06:42 AM	#3
guam2250 Member Join Date: Jun 2018 Posts: 64	Re: Holley 94 Thanks so much for the reply and info!!!

11-15-2022, 08:15 AM	#5
Terry,OH Senior Member Join Date: May 2010 Posts: 4,761	Re: Holley 94 The idle tube for the 94 has fine thread 1/4-32. The Stromberg idle tube has the same appearance but with a courser 1/4-24 thread. Last edited by Terry,OH; 11-15-2022 at 08:26 AM.

11-15-2022, 02:34 PM	#6
guam2250 Member Join Date: Jun 2018 Posts: 64	Re: Holley 94 Sponsored Links (Register now to hide all advertisements) Ok, so this won't work. Anyone know of an equivalent, but with a 3/8-24 thread? Thanks all.

11-15-2022, 03:01 PM	#7
Mart Senior Member Join Date: May 2010 Location: Solihull, England. Posts: 8,759	Re: Holley 94 Would it be worth explaining what you are trying to do? Some pictures might help.