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Rochester vs. Carter
#1425232 Sun Sep 26 2021 08:01 PM
Joined: Jan 2016
Posts: 751
D
'Bolter
I am replacing the carburetor on my 1954 3100 235. I tried rebuilding my current Rochester but it must have a crack or something. Gas pours out of it. Is one better than the other. Carter vs. Rochester? Chevy of the 40's also have new replacement carburetor.

Their Description:
This model is made especially for Chevy 6 cyl engines from 1937-1967. This high quality replacement carburetor bolts right on the manifold; has the normal Chevy linkage, pre-jetted, and are all manual choke models. It will fit either the 216 or 235 engines without modifications,

Last edited by dgrinnan; Sun Sep 26 2021 08:12 PM.

Dave from Northern Kentucky
My 54 3100
Re: Rochester vs. Carter
dgrinnan #1425235 Sun Sep 26 2021 08:56 PM
Joined: Apr 2005
Posts: 10,106
Grease Monkey, Moderator General Truck Talk & Greasy Spoon
Carter 2100s manual choke or 2101s automatic choke.
The Rochester replacement you have found is not made in the USA and is reportedly of poor quality.


Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne 4dr 230 I-6 one owner (I’m #2) “Emily”
‘39 Dodge Businessmans Coupe “Clarence”



"I fought the law and the law won" now I are a retired one!
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Re: Rochester vs. Carter
dgrinnan #1425236 Sun Sep 26 2021 08:56 PM
Joined: May 2015
Posts: 4,277
Housekeeping (Moderator) Making a Stovebolt Bed & Paint and Body Shop Forums
I'm waiting impatiently for Jerry to chime in with his "ABC's of Carburation - Always Buy Carter" thing. wink

Happily, my engine came to me with a Carter carb on it.

Carbking posted a thing on Rochester carbs how the body gets warped and how to correct it. Maybe that's what's up with yours.
[on edit] It was JonG that posted the deal on straightening carb bodies. The "other" Jon. blush Here's the thread: Link

That one that Chevy's of the 40's sells LOOKS like a Carter, but ???

Last edited by klhansen; Tue Sep 28 2021 03:59 AM.

Kevin
First car '29 Ford Special Coupe
#2 - '29 Ford pickup restored from the ground up.
Newest Project - 51 Chevy 3100 work truck. Photos [flickr.com]
Busting rust since the mid-60's
Re: Rochester vs. Carter
dgrinnan #1425241 Sun Sep 26 2021 09:39 PM
Joined: Sep 2009
Posts: 359
G
'Bolter
The Rochester's were known for warping, causing leaks. Every Rochester I've ever had or seen had stains all over it from leaks. I've had really good luck with a Zenith 228 carb from a 270 GMC that I use on my 261. But if I had a 216 or 235, I would have a Carter 2100. Ask Jerry how many warranty claims GM had back in the 50's due to the Rochester carbs.


-Patrick
1953 Chevrolet 3100
261 / 4-speed / 4:11 / Commercial Red

Re: Rochester vs. Carter
dgrinnan #1425255 Sun Sep 26 2021 11:48 PM
Joined: Dec 2008
Posts: 1,638
P
'Bolter
It will fit either the 216 or 235 engines without modifications

The 216 and early 235 have a different flange bolt pattern than the later 235 and 261, so the carburetor cannot fit both. Either they don't know this, or are deceptive.

Re: Rochester vs. Carter
dgrinnan #1425257 Mon Sep 27 2021 12:03 AM
Joined: Jan 2016
Posts: 751
D
'Bolter
Yes, Jerry advised me against one of the Rochester rebuilds so I tried doing it myself. Now that I have no choice I been searching for a Carter 2100 but after an hour on websearch no luck. Any place I find a reference is out of stock or they are on ebay list as a good core for a rebuild. I want to take it out of the box and bolt it on.

Last edited by dgrinnan; Mon Sep 27 2021 01:07 AM.

Dave from Northern Kentucky
My 54 3100
Re: Rochester vs. Carter
dgrinnan #1425263 Mon Sep 27 2021 01:20 AM
Joined: Apr 2005
Posts: 2,852
C
'Bolter
You have asked for a direct comparison between angel food cake and horse poop---where to begin?


Evan
Re: Rochester vs. Carter
dgrinnan #1425266 Mon Sep 27 2021 02:18 AM
Joined: Mar 2010
Posts: 639
B
Curmudgeon
I did a search and got this immediately.

https://www.ebay.com/itm/324803273984
rebuild yourself or exchange above for:
https://www.ebay.com/itm/185069865135

If you are on a budget, I would post in the parts wanted section and also continue your search elsewhere.
They do show up from time to time at a reasonable price but it takes patience.

Last edited by buoymaker; Mon Sep 27 2021 02:24 AM.
Re: Rochester vs. Carter
dgrinnan #1425282 Mon Sep 27 2021 01:11 PM
Joined: Jan 2016
Posts: 751
D
'Bolter
I have also been looking Stromberg BIG97 as a possible new replacement. It would require an adapter from the Stromberg 3 bolt pattern to the 235 2 bolt configuration. Are any of you running this set up? Was there an modification you had to make? It doesn't look like the choke cable and throttle rod would connect without some modification. Any other new replacement recommendations. Keep in mind I do not want to do extensive modifications. Hoping for a bolt on and go.

I am continuing my search for a Carter 2100.

Last edited by dgrinnan; Mon Sep 27 2021 01:27 PM.

Dave from Northern Kentucky
My 54 3100
Re: Rochester vs. Carter
dgrinnan #1425330 Tue Sep 28 2021 12:55 AM
Joined: Mar 2010
Posts: 639
B
Curmudgeon
There truly is pages and pages of discussions on this forum about the "best" carburetor for the standard 235 engine. For ease of installation, the Carter YF 2100S is a direct bolt-on replacement for a truck (no automatic choke). It performs as good or better than the Rochester B did back when it was newly installed by GM (1954-62). In a nutshell the Carter YF 2100S is made (engineered) for the 235. It is the least hassle so you can get on with fixing other problems on your truck.

While you are looking at the Stromberg BIG97, I would seriously learn what your engine needs? This will narrow your search field down quite a bit. Sometimes this topic breaks out into argument (I've done this carb and I've done that carb) on this forum and is probably counter-productive (no teeth in it). I think all agree that the problem with the 216 and 235 engines are that the heads do not flow well (don't breathe). They were designed on purpose for low-end torque not expressway cruisers. Our beloved 235 engines are a notch above a tractor (a Jerry-ism).

As far as the new replacements, I have no experience myself but I would avoid any of the cheap ~$200 clones made in Asia. They currently don't sell their own repair parts and if you have one to fail, it's on you to find whatever you can to fix it. Some businesses that sell carburetor parts may refuse to help you. The clone carburetors made in Argentina (Daytona UN2) have been selling and reports, on other forums, are that some are happy with them. A recent discussion here on Stovebolt concluded that the Daytona was limited (top end) on a 261 engine. Time will tell.

One more thing and sorry for preaching, but simply slapping a new gas filter in-line with your $$$ carburetor and expect 0% problems is not smart. I recommend you start with the gas tank and work your way forward to the carburetor. Replace it all or do a great and thorough job replacing/cleaning or whatever is needed. Past usage of Ethanol gasoline will cause rust in the fuel system of these old trucks regardless of the additives you put in them. They typically are not daily drivers so the alcohol in the Ethanol breaks down to a water component. I run non-Ethanol.

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