Six Pack issues and rebuilding by tommyg29

6 minute(s) of a 193 minute read

4-5-2014

So my stock volume is 25cc?

Discharge nozzle is #31, and switching back to my original cam #290

Just watched a Holley video description.

The sizes go from about 25 (25/1000) to about 52, and from their description the sizes below 30 are typically for "heavier" cars with highway gearing (ie. slower)

Their adjusting descriptions on the video are pretty clear.

Thanks to everyone for the six pack seminars  

Still have a ways to go to tune this thing but hopefully Im getting there.

It did start a little while ago but coughed, spit and blew lots of smoke for all of the 30 seconds before I shut it down, so Im doing some more fiddling.

A few weeks ago when I got my "old" setup running again it seemed to run fine, but like I said, it also developed leaks here and there, and that scared me.

Running only on primary, coughing and spitting badly...not wanting to run. Brand new plugs are solid black.

Update....10 minutes later, forgot to uncap and connect the vacuum lines, running much better but still blowing lots of smoke.

Update again, an hour later because I ran out of gas. Put a couple gallons in and now runs like crap again! 

Think Ill take a break until tomorrow. 

Have to watch my Gators playing in the Final 4 tonight.

4-6-2014

Interesting,

Once I get everything sorted out I will organize what I have left over and let you know before I put anything on ebay.

I just installed 66s primary and 80s in the secondaries, and my "old" setup was 80s and 86s.

The way its running (or not running) makes me think the connection between the accelerator pump and the discharge nozzle is messed up. Maybe a gasket misaligned? Will take it apart again

I assume this is the route:

Cant really get it to idle. Running the 290 cam in position 1, but have the main all apart again. When I sprayed carb cleaner through the red circled hole in picture above, nothing came out the discharge nozzle.

I think the discharge nozzle isnt lining up perfectly, meaning maybe the inner holes arent lining up with the slots on either side of the threaded hole? When I tighten it down the nozzle tends to twist just slightly. Also, my upper washer, the flexible one against the nozzle set screw is beat up. May have to order a new kit just to get that stupid washer.

But that probably isnt the problem, or at least not the only problem.  Maybe its the main gasket? This time I used the bottom right one which has one extra hole.

I probably have a combination of issues so I will get another rebuild kit and try again.   

My car is a tribute, and the choke has always been disconnected (I live in warm weather), so absolute originality isnt that important, especially for something you cant really see.

Would it be practical to remove the entire choke assembly on the passenger side, and the flap, etc? It all just seems to get in the way.

Ok, an hour later and put it all back together, this time with my old blue gasket, which I know worked,  and this is where I sit, still not wanting to run or idle on its own, and constantly blowing lots of smoke. Sounds like its badly choking on itself. No difference. Funny thing is, before I started running out of gas yesterday, it did idle, not well, but it was a lot better than this.

Guess I'll try again next weekend.

Thanks. I am going to just remove the choke system then. Hardest part will be removing the two stripped little brass screws on the shaft. Probably just drill them out.

Dont think the pin is a problem. It seems to slide in and out freely.

Smallest jets I have in my kit are 65s so I will order a pair of 62s. Worth a try, though most other advice Ive read suggests 64-66 for a mild build like mine with headers and exhaust. Going leaner with 59-60 like Karakasian suggests sounds interesting but I would rather run rich than lean. 

Like you said though I cant believe the jets are my problem. Its not just the idling, it really wont run at all without a lot of throttle, and then choking like its running on 4 cylinders. When I let off the gas it just coughs, spits and quits.

Ive removed these carbs at least 6 or 7 times, and I havent been able to even start tuning.   

Thanks....more reading  

Another question... will the fancier nozzle with the brass tips be any better. Its a couple bucks more.