![]() |
![]() |
#1 |
Registered User
![]() Join Date: Jul 2015
Location: South Orange County CA
Posts: 1,263
|
My carb is crap
Looking for recommendation on a new/rebuilt plug-n-play carb for my 63 292 straight six. I just want something that will bolt on and just work.
After I rebuilt this Carb for the third time, it seems to be wet with gas around the upper gasket, where the top piece bolts on. After I shut it off, the throttle opening has vapor around it, like it’s flooded. Also, when I blip the throttle it does not accelerate, it just stumbles and wants to die. New accelerator pump too. This maybe a B carb, could be a modified BV. The Choke is manual, but it looks like it may have been automatic. Last edited by Asshat; 05-23-2020 at 09:18 PM. Reason: Pics |
![]() |
![]() |
![]() |
#2 |
Moderator
![]() ![]() Join Date: Aug 2011
Location: China Spring, TX
Posts: 7,280
|
Re: My carb is crap
Why not have it professionally rebuilt:
https://www.customrebuiltcarbs.com/ Maybe these guys: https://www.smicarburetor.com/
__________________
Master Chief, US Navy, Retired 1964 C10 Step-side Short Bed - In Progress 2009 2500HD Duramax LTZ 1948 GMC Panel 1956 Big Window Stepside 1953 5 Window Chevy Stepside 1932 Coupe New Seat Foam for Bench Seats? |
![]() |
![]() |
![]() |
#3 |
Registered User
Join Date: Feb 2012
Location: Beautiful BC, Canada, eh?!
Posts: 2,227
|
Re: My carb is crap
Is the float misadjusted or sticking?
Float level can be critical to carb performance.
__________________
1961 Apache: "Grabber Orange" Shortboxed, pancake, step-notch, air-ride, boosted-LS 1977 Silverado: Shortboxed & dropped, potato-potato V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7L in a 1.0L bag Lotus Super 7 Replica: Scratch-built street-legal rollerskate |
![]() |
![]() |
![]() |
#4 | |
Registered User
![]() Join Date: Jul 2015
Location: South Orange County CA
Posts: 1,263
|
Re: My carb is crap
Quote:
Rather just buy a new one. |
|
![]() |
![]() |
![]() |
#5 |
Registered User
![]() Join Date: Jul 2015
Location: South Orange County CA
Posts: 1,263
|
Re: My carb is crap
|
![]() |
![]() |
![]() |
#6 |
Registered User
Join Date: Oct 2016
Location: San Diego, CA
Posts: 552
|
Re: My carb is crap
https://www.carburetor-parts.com/Rep...-B_p_4411.html
Typical issues you're having. This will work,^^^^ but you need to get an air cleaner setup for it, and adjust the fuel mixture for a 292 with an inspection of the spark plugs after a drive. If your old carb hesitates on acceleration, something's wrong with the accelerator pump. Most likely. Or timing. Or secondary ignition. Or points gap. Or condenser... ![]()
__________________
Everybody has to believe in something. I believe I'll have another beer. |
![]() |
![]() |
![]() |
#7 |
Registered User
Join Date: Feb 2012
Location: Beautiful BC, Canada, eh?!
Posts: 2,227
|
Re: My carb is crap
I've had a few carb kits with defects in the new parts as well....
__________________
1961 Apache: "Grabber Orange" Shortboxed, pancake, step-notch, air-ride, boosted-LS 1977 Silverado: Shortboxed & dropped, potato-potato V8 Pontiac Firefly (Chevy Sprint): The ultimate engine swap: 5.7L in a 1.0L bag Lotus Super 7 Replica: Scratch-built street-legal rollerskate |
![]() |
![]() |
![]() |
#8 |
Registered User
![]() Join Date: Aug 2010
Location: Burbank CA
Posts: 3,055
|
Re: My carb is crap
I had the very same trouble with stumbling off the line even after a rebuild which included a new accelerator pump. I'll shorten the long frustrating story by saying you might have missed something.
Look down the throat of the carb with a good light source, jab the throttle, and you should see a healthy squirt of fuel into the throat. If you don't see that, your new pump is bad or its passage is clogged. The tiny passage outlet in the carb throat was plugged up in my case. One more trip to the work bench, a fine wire, more carb spray, and a few blasts of compressed air solved the issue once and for all. Now if you DO see a stream of fuel, simply go over float level, ignition timing, wires, vacuum leaks, coil health, points and condenser, linkage wear, air cleaner, fuel pump, atmospheric pressure, ambient temperature, relative humidity, and astrologic convergence. You should be good. Lol. Last edited by oem4me; 05-24-2020 at 11:26 AM. |
![]() |
![]() |
![]() |
#9 |
Registered User
Join Date: Oct 2012
Location: Philly, PA
Posts: 537
|
Re: My carb is crap
I feel your pain. Rochester Bs are prone to warp, I would bet 99% of them are. Next time you split it open, place a straight edge on it to see if the horn is bowed. There's multiple solutions on the internet to fix or at least lessen that annoying dribble at the gastket. As for the acceleration, or lack of, check out this video which addresses the issue, also, checking the vacuum and adjusting might help a bit. If you're truly tired of it and want to move on, I've heard good things about monojets and there's other options like this that might be a good fit. Good luck.
__________________
My truck ain't dead, it just smells funny. |
![]() |
![]() |
![]() |
#10 |
Registered User
![]() Join Date: Jul 2015
Location: South Orange County CA
Posts: 1,263
|
Re: My carb is crap
Is there an Aftermarket bolt on carb that would work? Anyone have any experience here?
|
![]() |
![]() |
![]() |
#11 | |
Registered User
![]() Join Date: Jul 2015
Location: South Orange County CA
Posts: 1,263
|
Re: My carb is crap
Quote:
https://www.carburetor-parts.com/190...ew_p_3141.html |
|
![]() |
![]() |
![]() |
#12 | |
Registered User
![]() Join Date: Jul 2015
Location: South Orange County CA
Posts: 1,263
|
Re: My carb is crap
Quote:
Also, it started easier; it idles, but not for long. Seems to just idle slower and and slower after about 10-20 seconds. Then just dies. |
|
![]() |
![]() |
![]() |
#13 |
Registered User
Join Date: Apr 2017
Location: Esterhazy, SK
Posts: 80
|
Re: My carb is crap
Rock Auto. Autoline C936 rebuilt stock carb. $133.79. No monkey business with a stock rebuilt carb. I have used Autoline rebuilt carbs in the past and they performed excellent.
https://www.rockauto.com/en/catalog/...arburetor,5904 |
![]() |
![]() |
![]() |
#14 |
Registered User
Join Date: Oct 2016
Location: San Diego, CA
Posts: 552
|
Re: My carb is crap
Does it make a weird whistling sound at idle or on acceleration? maybe a vacuum leak at the intake- very common issue. Is the exhaust manifold cracked?
__________________
Everybody has to believe in something. I believe I'll have another beer. |
![]() |
![]() |
![]() |
#15 |
Registered User
![]() Join Date: Jul 2015
Location: South Orange County CA
Posts: 1,263
|
Re: My carb is crap
|
![]() |
![]() |
![]() |
#16 | |
Registered User
![]() Join Date: Jul 2015
Location: South Orange County CA
Posts: 1,263
|
Re: My carb is crap
Quote:
|
|
![]() |
![]() |
![]() |
#17 |
Registered User
![]() Join Date: Jul 2015
Location: South Orange County CA
Posts: 1,263
|
Re: My carb is crap
|
![]() |
![]() |
![]() |
Bookmarks |
|
|