How to Identify a Straight Through NH carb?
Forum rules
If you need help logging in, or have question about how something works, use the Support forum located here Support Forum
Complete set of Forum Rules Forum Rules
If you need help logging in, or have question about how something works, use the Support forum located here Support Forum
Complete set of Forum Rules Forum Rules
-
Topic author - Posts: 214
- Joined: Wed Jan 16, 2019 11:38 am
- First Name: James
- Last Name: Chochole
- * REQUIRED* Type and Year of Model Ts owned: 1913 Runabout
- Location: Oswego, Illinois
- MTFCA Number: 50481
- Board Member Since: 2003
How to Identify a Straight Through NH carb?
Can anyone help me identify an NH carburetor and what is the way to ID a straight through carb?
Is it as simple as being able to see through it? Or are there salient features from the side to look for?
Thanks,
Jim
Is it as simple as being able to see through it? Or are there salient features from the side to look for?
Thanks,
Jim
-
- Posts: 6435
- Joined: Sun Jan 06, 2019 11:18 am
- First Name: Scott
- Last Name: Conger
- * REQUIRED* Type and Year of Model Ts owned: '13, '15, '19, '23
- Location: Clark, WY
- Board Member Since: 2005
Re: How to Identify a Straight Through NH carb?
Straight through on left for both pictures:
Scott Conger
Tyranny under the guise of law is still Tyranny
NH Full Flow Float Valves
Obsolete carburetor parts manufactured
Tyranny under the guise of law is still Tyranny
NH Full Flow Float Valves
Obsolete carburetor parts manufactured
-
- Posts: 394
- Joined: Tue Jan 08, 2019 10:31 am
- First Name: Tom
- Last Name: Strickling
- * REQUIRED* Type and Year of Model Ts owned: 11 Torpedo, 18 Touring, 21 TT Huckster, 24 snowmpbile Staude and Shaw tractor conversions, Model T powered sickel bar mower
- Location: New Philadelphia Ohio
Re: How to Identify a Straight Through NH carb?
What extra considerations if any are there for rebuilding a straight through ?
“The trouble with retirement is that you never get a day off.” – Abe Lemons.
-
- Posts: 1011
- Joined: Mon Jan 07, 2019 10:18 pm
- First Name: Mark
- Last Name: Osterman
- * REQUIRED* Type and Year of Model Ts owned: 1923 runabout
- Location: Rochester, NY
- Contact:
Re: How to Identify a Straight Through NH carb?
None really .... all the same parts. Just make sure all the little chambers are clean and plugged properly.
-
- Posts: 6435
- Joined: Sun Jan 06, 2019 11:18 am
- First Name: Scott
- Last Name: Conger
- * REQUIRED* Type and Year of Model Ts owned: '13, '15, '19, '23
- Location: Clark, WY
- Board Member Since: 2005
Re: How to Identify a Straight Through NH carb?
They rebuild just like any other NH...no different parts or adjustment.
My opinion is that they will perform only slightly better than the more common sway-back NH, often with slightly harder starting and a greater propensity to spit a little fuel when starting and sometimes when shutting down. Not always, but many people report this. I ran one for awhile on our '13 and believe it was a little harder to start. On a car with a starter, this may be less noticeable.
My opinion is that they will perform only slightly better than the more common sway-back NH, often with slightly harder starting and a greater propensity to spit a little fuel when starting and sometimes when shutting down. Not always, but many people report this. I ran one for awhile on our '13 and believe it was a little harder to start. On a car with a starter, this may be less noticeable.
Scott Conger
Tyranny under the guise of law is still Tyranny
NH Full Flow Float Valves
Obsolete carburetor parts manufactured
Tyranny under the guise of law is still Tyranny
NH Full Flow Float Valves
Obsolete carburetor parts manufactured
-
Topic author - Posts: 214
- Joined: Wed Jan 16, 2019 11:38 am
- First Name: James
- Last Name: Chochole
- * REQUIRED* Type and Year of Model Ts owned: 1913 Runabout
- Location: Oswego, Illinois
- MTFCA Number: 50481
- Board Member Since: 2003
Re: How to Identify a Straight Through NH carb?
Well I guess I am selling mine on eBay, I didn't realize it was a straight through NH. If you want a nice solid complete one- take a peek.
Thanks for the help ID'ing them, I had no idea how to tell them apart.
Thanks for the help ID'ing them, I had no idea how to tell them apart.
-
- Posts: 523
- Joined: Sun Jan 06, 2019 11:12 am
- First Name: Joseph
- Last Name: M
- Location: MI
- MTFCA Number: 0
Re: How to Identify a Straight Through NH carb?
The one that you have listed on Ebay is not an NH, a straight-thru carburetor yes, but not an NH and not made by Holley. Either a Western Auto or Simmons Super-Power, both aftermarket. There would have been a wire heating element where the brass screw is filling in the hole. Does the carburetor that you have in the listing have the small pot metal flapper in it?
"Remember son, there are two ways to do this: The right way, and your way” Thanks Dad, I love you too.
LOOKING FOR A LUFKIN No. 9A Height Gage Attachment.
LOOKING FOR A LUFKIN No. 9A Height Gage Attachment.
-
Topic author - Posts: 214
- Joined: Wed Jan 16, 2019 11:38 am
- First Name: James
- Last Name: Chochole
- * REQUIRED* Type and Year of Model Ts owned: 1913 Runabout
- Location: Oswego, Illinois
- MTFCA Number: 50481
- Board Member Since: 2003
Re: How to Identify a Straight Through NH carb?
Where would this pot metal flapper be located at? Both butterflys are the standard steel and brass type so potmetal is gone, no wire has survived.
-
- Posts: 523
- Joined: Sun Jan 06, 2019 11:12 am
- First Name: Joseph
- Last Name: M
- Location: MI
- MTFCA Number: 0
Re: How to Identify a Straight Through NH carb?
The flapper would be located behind the choke butterfly and would mount/pivot on the small rod attached to the brass screw that can be seen in the photo below:
You can see the small rod (horizontal) in this photo. This would normally be behind the choke butterfly but that has been removed in this photo.
The flapper is supposed to help with low speed idle and make the carburetor run/operate smoother.
You can see the small rod (horizontal) in this photo. This would normally be behind the choke butterfly but that has been removed in this photo.
The flapper is supposed to help with low speed idle and make the carburetor run/operate smoother.
"Remember son, there are two ways to do this: The right way, and your way” Thanks Dad, I love you too.
LOOKING FOR A LUFKIN No. 9A Height Gage Attachment.
LOOKING FOR A LUFKIN No. 9A Height Gage Attachment.