All Small Six Aftermarket 1100 Issues

[0Meltdown0]

Hey all! First post here.

Long story- I have a 64.5 Mustang that I recently revived after it sat 20+ years. The original autolite 1100 carburetor ran good EXCEPT for the idle mixture. When I tried to adjust the mixture on the carb the head of the screw snapped and left the rest seized solid in the carb. After being brutally attacked with easy-outs and drill bits, that carb-body is no longer salvagable.

So I got a copy-cat 1100 online that seems to have decent build quality, the only problem is now the car behaves strange under load. This includes a kinda "bumpy" feeling during acceleration and the car will sometimes stumble coming off the line or when downshifting into 2nd.

I guess my question is, could this be the jetting? The engine idles great now and seems to rev fine with the clutch in, it only seems to act up under load. Would it be possible to take the factory jets from the original carb and use them in the new one? Could the issue be completely unrelated? Does the issue even exist in the first place?
What is the meaning of life?

I'm 18 and very new to the hobby. I still have a lot to learn about carburetor tuning.

T.I.A. !!!


(accidentally posted this in the wrong category before, sorry moderators!)

 

[ActionYobbo]

Yes check the jet sizes
The symptoms you describe can be caused by the jet being too big.

 

[frozenrabbit]

trash that junk aftermarket carb, not much success for anyone with those. original units are easy to find on ebay.

 

[powerband]

welcome to a group that is more than willing to provide answers to questions you haven't asked ...
.
... they say Carburetor is French for "Don't F*^k with it"
.
first think SIMPLE - did you connect the vacuum line from carb to distibutor? . Ignition and fuel working together are all there is to 'tuning'.
.
again go over the carb/fuel supply and ignition for obvious issues before deciding on 'new' carb as source of running 'strange under load'.
.
now that your hands that smell like gas anyway, fun to open that brand-new 1100 and see what you think. The Main Jet doubtful marked for size, float and fuel inlet checked for build material contamination , only 'adjustment' is float - fuel level for best idle/run mix. My experience with the Clone Carbs is they are exact to the dimensions of originals and have only slight alterations internally. Clone Carb parts screws are extremely tight for some reason
.

large number of vendors selling 'offshore' low cost clone carbs leads to questions of quality, but since no domestic source of new carbs loke 1100's in @ 40 years WTF ... . I've seen the unmistakable shiny aluminum CLONE carbs on early Chevy pickup sixes, Volvo P1800, hot rod 350/350's and numerous Holley 4Bbl's, Rochester Qjets, etc at cruises and shows. Original carbs were Zinc based and dull grey but the clones are bright aluminum and weight 1/4 of originals.

Ford Falcon 1100 in Parts & Accessories for sale | eBay

www.ebay.com

.
have fun