Rochester Carb

[psy999]

I have a rochester b carb with manual choke that I rebuilt recently for a 1954 235 (still stumbles on accel with weak power, works good with choke slightly on). I could continue to tinker with the carb to see if I could fix it, but instead I just bought a rochester b carb with manual from Chevy Duty. I wanted to see if the pro rebuilt would work better before I completely gave up on rochesters.

Unfortunately, I can see no way to hook up the choke cable on the chevy duty carb, even with taking accessories off my existing carb. I've included a picture of the linkage on both carbs, and used a small white arrow to indicate the direction the linkage must go to activate the choke. As you can see on my old carb, there is a "cable stop" (for want of a better word) to attach the choke cable to the linkage. There's no such thing on the rebuilt.

Of course this happened on Sunday when tech support wasn't available. I called today and got an answering machine. I left a message but don't see how this will work with my busy work schedule.

Anyone come across this problem and have a fix?

P.S., Nate, you mentioned that Chevy Duty had their rochesters rebuilt by Carter. The box says Champion, is this the same as Carter?

Thanks

Dave

 

[vwnate1]

Interesting ~ you have there , a 1959 ~ 1962 Passenger car carby and the choke cable attachment is slightly different , it needs a ...dammit , I forget the name of the little do-dad that holds the cable end to the carby .it's a very common item and most FLAPS carry it .

Aparently C-D has changed suppliers .

I'd bolt it on and see how well it idles , if your tune is correct , you'll need to pump it 4 ~ 5 times before cranking it then keep your foot on the throttle untill it warms up then it should idle just fine...

if not , you need to find the vacuum leak , might be the Bakelite heat insulator underneath the carby , between it and the intake manifold . you're not supposed to use any gasket between it and the manifold . should use a very thin gasket under the carby so it won't leak....

 

[psy999]

Thanks Nate, I'll give it a try tonight and let you know. Hope your mom is okay.

Dave

 

[brit 50]

For future reference, whats the best set up for a duel carb manifold, which carbs etc,

Neil
________
Michigan Medical Marijuana Dispensary

 

[vwnate1]

Which Multi Carbys ?

That's a tough question

If I were to want to go racing , I'd use three carbys as it's a three (intake)port cylinder head , prolly use Carter YF's .

Of course , they're a little tricky to properly synch up , & once done few can resist fiddling with them wich is wrong ~ " Carburator is a French word meaning LEAVE IT ALONE ! "

Contrary to popular belief , carbys DO NOT go out of adjustment ! .

Me , I'm an old farm mechanic who is also a Foreign car mechanic (I know , what can I say ? ) so I'm familiar with both multi carby set ups and the venerable Rochester 'B' series carby so I like the Offenhouser two carby intake with two _matched_ Rocheser manual choke carbys on it , coupled to a split stock exhaust manifold with no restrictor plate and the heat risor flapper & bi-metallic spring still in it so's you can actually -drive- the darn thing in cold weather.....

You pays your money and takes your choice ~ ALL of the multi carby setups are nice and give great boost in tractable power making it much more pleasant to drive in to-day's rapid traffic .

There are also intakes to mount 2 or 4 barrel carbys , these work O.K. but not great as the fuel is dumped into the center of the intake plenum so the end cylinders never get equal fueling.....

' Ya canna break the laws of physics , Jim ! ' .

Maybe they're good for WFO circle track racing , I think they're trash .