Carburetor advice 56 Cadillac

[jaxops]

I need your advice wrt the Rochester 4bbl carburetor on my 56 Cadillac Limousine. I had it cleaned and overhauled, but when it came back the vacuum line and expansion piece were missing. The shop didn't have the parts, so they plugged it. Does anyone know where I can get the parts for this?

Secondly, does anyone know the correct method for adjusting the brake and gas pedals on these cars? There are no springs on the throttle nor on the brake pedal. According to the manuals they are mechanically linked. This is my first 50s car, so I haven't had to deal with this kind of probelm before. I have to pull the brake pedal up a quarter inch or so to get my brake lights to go out...but the brakes work well otherwise. The carburetor shop put spring s on the throttle because without them it has no pushback. They don't belong there, but I need to know what to do next.

Appreciate any advice on these. Many thanks AACA Wizards.

[56Roadmaster]

Expansion piece? Are you talking about the throttle dash pot? A small (1 1/2") diameter diaphram operated part which the throttle settles back on. If it is just hardware you can purchase fittings at your local auto parts NAPA stores usually have a good selection, ask to look in the weatherhead catolog.

I have GM carb parts and service manual which cover s your carb, it does not show any vacuum fittings to the carb. You can have a copy of the pages on the 56 Caddy carbs if it might help send me address to wilebill@att.net. and I will mail you a copy.

As for the brake pedal if that has the power booster/master cylider unit that mounts on the lower firewall like my 56 Buick, the return spring is in side the vauum can, there is am adjustment on the pedal so that you can prevent binding of the shaft which would cause it to not return all the way.

[jaxops]

Many thanks sir. I have a cover piece for the fast-idle on the carb but not the guts for it. What does one ask for when you look for the internals on that piece? Also, do you know how to adjust the gas pedal so I can take the springs tensioning it off?

Interesting about the brake pedal. I have to see how you get in there to adjust it. Hopefully the service manual has something on that.

Thanks for the email address. I will scan the carburetor section and email it to you this evening.

[critterpainter]

Are you looking for the choke assembly??? This is the part that operates the "butterfly" on the top of the carburator over the 2 front barrels. It also increases the idle speed when the engine is cold.

[jaxops]

If that works with the fast idle choke, then yes. I can send a page out of the Rochester carb manual to show you better by email if you like.

[Gaston Rey]

have you tried Ebay?

Here's a link for the whole carburator used, but you can use the pieces you are missing.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=33550&item=7936242495&rd=1

[jaxops]

Thanks Gaston. They changed the Cadillac engine in 1961, and I am unsure of the carburetor configuration for that series. I have Coopers Vintage checking into it. Appreciate the support.

Slainte,

Mark Monaghan