Sheet Metal Tube Under Carb??


The old and reliable.

Golden Jubilee
Golden Jubilee

Posts: 302

Joined: Wed Sep 28, 2016 12:15 pm

Post Sat Jan 28, 2017 11:07 am

Re: Sheet Metal Tube Under Carb??

You are truly an IHC parts expert! Thank you for looking that up. So many things not in the diagrams.
Welcome back!!

I just did not read close enough in the parts manual. Interesting that they label it a restrictor and for non-governed engines.
Well we know it is a stock part but not really sure what it's for?

Does seem to be a speed limiter of some sort. Hard to believe these trucks needed that!
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Golden Jubilee
Golden Jubilee

Posts: 4178

Joined: Thu Nov 29, 2012 9:28 pm

Location: Lyman, IA

Post Sat Jan 28, 2017 11:10 am

Re: Sheet Metal Tube Under Carb??

1949 \KB-3 wrote:Does seem to be a speed limiter of some sort. Hard to believe these trucks needed that!
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I think it was an attempt to prevent over speed of the engine, not the truck!
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Rusty Driver
Rusty Driver

Posts: 107

Joined: Mon Feb 09, 2015 7:10 pm

Location: Eldon, Missouri USA

Post Sat Jan 28, 2017 6:27 pm

Re: Sheet Metal Tube Under Carb??

A number of manufacturers, primarily GM, but also many others, used a tube similiar to this under the carb, with an exhaust chamber around the tube to heat the air/fuel mixture and improve atomization of the fuel.

Standard Hygrade was the primary aftermarket supplier of the replacement tubes. The only I.H.C. listing for these tubes in the Standard Hygrade catalogues were the 1935~1937 C1 trucks.

Jon.
Good carburetion is fuelish hot air!

If you truly believe one size fits all, try walking a mile in your spouse's shoes!

Owner, The Carburetor Shop in Missouri

Golden Jubilee
Golden Jubilee

Posts: 302

Joined: Wed Sep 28, 2016 12:15 pm

Post Mon Jan 30, 2017 9:12 am

Re: Sheet Metal Tube Under Carb??

Thanks for the added history!
I have learned so much on this forum.
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Golden Jubilee
Golden Jubilee

Posts: 4178

Joined: Thu Nov 29, 2012 9:28 pm

Location: Lyman, IA

Post Mon Jan 30, 2017 10:21 am

Re: Sheet Metal Tube Under Carb??

I think the difference between this on and the ones Carbking describes, this one is surrounded by the intake, and not exhaust gasses and has a smaller outlet than inlet, and is labeled "restrictor" in the parts book, so is likely just that, something to restrict the inlet. Much like some race car rules.

Pile of Parts
Pile of Parts

Posts: 46

Joined: Fri Nov 11, 2016 11:50 am

Post Fri Mar 03, 2017 6:09 pm

Re: Sheet Metal Tube Under Carb??

i have some pict of that part.. i can find more if need

Pile of Parts
Pile of Parts

Posts: 46

Joined: Fri Nov 11, 2016 11:50 am

Post Fri Mar 03, 2017 6:11 pm

Re: Sheet Metal Tube Under Carb??

picture are to big.. try to find an other way

Golden Jubilee
Golden Jubilee

Posts: 302

Joined: Wed Sep 28, 2016 12:15 pm

Post Sat Mar 04, 2017 11:04 am

Re: Sheet Metal Tube Under Carb??

Open them in Paint and resize them.
Limit is 512K for this forum.
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Yard Art
Yard Art

Posts: 72

Joined: Wed Jun 15, 2016 8:59 am

Post Mon Mar 06, 2017 11:35 am

Re: Sheet Metal Tube Under Carb??

'47 KB1 GD

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Rusty Driver
Rusty Driver

Posts: 118

Joined: Wed Feb 19, 2014 12:00 am

Location: Quesnel, B.C. Canada

Post Tue Mar 21, 2017 12:05 pm

Re: Sheet Metal Tube Under Carb??

I have one of those restrictors as well. I am going to omit it and see how it runs.
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