Sitting Bull

Hi gang,

Here is a picture of a QJet that is not computer controlled. But my QJet has an electric choke, which this pic does not show, and it also has an electonic nodule at the front top, in front of the primaries, that has several wires going to it.

Does that mean I am actually running a cc-QJet on my non computer engine? I have a vacuum advance distributor.

EvilCartman

iTrader: (1)

Yup, sure sounds like that's what you're doing.

five7kid

iTrader: (14)

If you go to www.edelbrock.com, click on automotive, then carburetors and Q-jet Spread Bore, you'll see a picture with three carbs in it. Two have electric choke, one does not.

The picture you showed is a divorced-choke model, 1901 (which I used to run on the 396) or 1902. The choke type, though, has nothing to do with CC or non-CC (although all CC q-jets are electric choke).

If you have a two-wire connector on the top front passenger-side corner of the carb, and a 3-wire (or is it 4?) on the front driver's side corner of the carb, then you have a CC carb. If not, then you don't.

Some models also included an idle solenoid or stepper motor. Again, CC or non-CC isn't the issue there.

Note none of the Edelbrock q-jets are CC.

Sitting Bull

I'll take a picture of my carb and post it--as soon as it stops snowing here

dps8315

The front passenger side has a blue connector with 2 wires, that's the M/C solenoid. The front driver's side has 3 wires, black connector with a green band around it... that's the TPS.

I'll post a picture soon.

Apeiron

I still say you have dual accelerator pumps. My Rochester book is still in Calgary, call Teal Shark and talk her into letting you look through it.

Sitting Bull

Ok, I braved the freezing elements here on Cowtown to get us a pic of my QJet.

What do you folks say the verdict is?

Sitting Bull

Here is a more overall picture of the carb and engine.

Sitting Bull

I brightened the pic so it is easier to see.

Apeiron will recognise all of this, as he is the one who installed the intake for me

Chris is a good lad

five7kid

iTrader: (14)

Gotta be some bastard Canada export thing.

Obviously, it's connected to a thermo switch on the thermostat housing. Probably some type of cold-only mode to ...

Sorry, I'm lost. Any other speculation would be... well, speculation.

I'll see if my Roe book has anything in it.

five7kid

iTrader: (14)

Oh, that ain't CC...

Sitting Bull

Well, it is a bit of a relief to know it ain't cc. I thought for moment there that I might have to buy a whole new carb, which I don't want to do. This one runs like a top and when the secondaries kick in, well, it's "Zoom, zoom zoom!" as the commercial says

Still, when it almost stalls coming to a halt, it drives me crazy! It even does that when I put the car in neutral and come to a bit of a quick stop. And it isn't a radical stop, either.

Any ideas???

Apeiron

Yeah I can think of a few other things he installed on there too.

I recall in one of the exploded diagrams in Doug Roe's book that there was a similar connector in that location to control the activity of the double-capacity accelerator pump on some models.

five7kid

iTrader: (14)

There was only one reference that I could find, an exploded view of '85-'86 truck CC carbs - said something about "not all models will have all parts shown".

Must not be a lot of those out there. Do you feel special now?

Sitting Bull

Oh man, I'm shivering all over

Momar

Im not real knowledgabe on carbs, but I wonder if when you come to a stop it is taking vacume you need for the carb. Do you have everyting hooked up right and no vacume leaks. I am just pulling this out of my @ss so if it doesnt make sense, sorry.


Ben

MRZ28HO

Get rid of that truck carb (I've seen them on trucks here in my area) and put on a regular carb. The choke housing can be swapped to another carb, so long as the vehicle can use the choke setup.

Sitting Bull

Yeah, we hooked up a vacuum gauge and hammered on the brakes but it kept a good reserve. Good guess, though.

Sitting Bull

Well, I'm having this carb rebuilt as we speak. If that doesn't fix the stalling, I'll just have to try a different carb, alright

Apeiron

I've got a couple of M4MC's in a box in Kamloops that might work.

Sitting Bull

Well, the guy doing my rebuild has a non-cc QJet he is going to swap me. So that ought to do it. He says something about an oxegen sensor that the wirey thingy on the top of the carb is attached to. If it kicks off, the whole car will stop running. So out with the new and in with the old

He also says he has a 600 cfm Edelbrock he can let me have, instead. Isn't that what you are using Chris? Is it worth trading for?

Sitting Bull

I still don't know if this carb problem is THE problem because the newly rebuilt one is leaking fuel from the bowl into the primaries

I think it is cracked. Hopefully it will all be sorted out tomorrow evening, when we take it apart and put a new main body on.

I am so tired of this ...