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DCOE bog/hessitation

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:iagree:
 
DrEntropy said:
<div class="ubbcode-block"><div class="ubbcode-header">Quote:] Here's what I don't understand, if these are the cars for a dual set up, why will I need smaller anything if I use just one. If two cylinders don't make enough vacuum, I don't see how one could.
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The venturi should NOT be loose, they should be held in place by a pair of trumpets on a DCOE 18. [/QUOTE]

Doc, I have some paper washers behind the filter housing that locates them but they don't seem to do a good job. Carbs came that way. One can be wiggled around a little bit(choke). Seems like that would give a weak vac signal.
 
I would start with the 28 chokes and pair of trumpets to hold it all togeather
 
hooey said:
I would start with the 28 chokes and pair of trumpets to hold it all togeather
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Yup-yup!

Once it is drawing properly you can do some plug cuts to begin tweaking mixture devices. Not yet, tho. No point.
 
Gonna get a meter. Been thinking about ignition. I have a MSD Blaster II coil, solid wires, new cap and rotor and Iridium plugs. I would think they would be up to the task of lighing it off under heavey load. Black box has a GM 4pin module in it which can take 12V. My supply wire only gives 9 IIRC. I'd go straight to it w/ 12, but I'm afraid I'll fry the dizzy. Got a MSD 6AL I might put on it. Came off of a Katrina car but might be junk though.
 
work on one problem at a time
if the ignition is working good now
fix the carb problem
then work on the ign
 
AMEN!!!

Every time ya introduce another varioble you COMPLICATE the problem.

JUST SWAP OUT TH' CHOKE TUBES, DAMMIT!!!


...or take it to someone who actually knows what to do. You're causin' your own headaches, Billy.
 
DrEntropy said:
You're causin' your own headaches, Billy.
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like that's never happened before :whistle: :devilgrin:
 
hooey said:
work on one problem at a time
if the ignition is working good now
fix the carb problem
then work on the ign
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Everything I have ever read or have been taught states to fix a weak ignition BEFORE doing any performance upgrades. The only reason I mention this is the car acts like a late model car with a bad plug wire under heavy load. It's not a bog, rather a high load studder or miss.

Usually what I'll do for a quick spark/fuel test is shoot some brake or carb cleaner down the throat with a snap throttle to simulate mains or accel pump comming on but I'm out if it right now. I have done some minor testing with it enriching it using the choke on throttle up or using my hand to manually choke it some at the front with no change whatsoever. The exhaust isn't sooty either while doing this.

Doc, I don't know what you're gettin' all excited about. No headache. It's not introduction of another varible, it's verification that everything else it up to the new load and extra fuel charge being presented. I just want to make sure the ignition is up to the task. If it's not, I'll never get the carb right.

If I had a set of 28's I'd throw them in and see but I don't. That's another $50. It won't cost me anything to do an ignition check. I'm not trying to fix a carb problem with ignition parts, I just making sure my ignition is good first so a can fix my carb problem. ( before I start spending any money on parts.)

The coil and wires are two or three years old (15K), the cap and rotor should be about a year (10K) and the plugs are recent (<1K), but I haven't checked anything ('cept the plugs).
 
Oh, I forgot to mention, the carb i have has a 10mm pump stroke. The Alfa oners here have a 14mm stroke. I swapped a 14 in and it seems to have made the miss worse. It seems to have moved it down in the RPM range a bit too. That's what got me to thinking.
 
You need a pair of SU'S to really make it sing........

:jester:

m
 
Got some and I don't like them.

O.K, beeen pricing venturis. $39 shipped for two 28's; $50 plus 13.75 shipping for four, any size combination I want or $75 + $10.85 shipping for six of any size combination. Can mix and match if I choose.

I already have 30's and 32's. Once I get the single straightened out and run it a while I'm plan on putting the duals on. I'll have this car for the rest of my life and part of my goal is to try everything that's out there on it and keep what I like. I already have the dual set up so why not put it on?

So, I was thinking either get four; two 26's and two 28's or get six w/ four being 26's and two 28's. My thinking is twice the price for three times the chokes sounds like a better all around deal especially if I may need them later.

If I can't run two cylinders on a 30 and need a 28,; then I should need a 26 for one cylinder per venturi when I run duals. Does this make sense? What sizes should I get if I plan on duals later?

Checked the ignition and everyhting looks o.k.
 
I want to clean up the Alfa carbs. Somene mentioned a leather shaft seal on these. Do I have to pull anything off of them before I soak 'em or just go ahead and teach them to swim?
 
DrEntropy said:
AMEN!!!

Every time ya introduce another varioble you COMPLICATE the problem.

JUST SWAP OUT TH' CHOKE TUBES, DAMMIT!!!


...or take it to someone who actually knows what to do. You're causin' your own headaches, Billy.
Click to expand...


I hear that :iagree:
 
hooey said:
DrEntropy said:
AMEN!!!

Every time ya introduce another varioble you COMPLICATE the problem.

JUST SWAP OUT TH' CHOKE TUBES, DAMMIT!!!


...or take it to someone who actually knows what to do. You're causin' your own headaches, Billy.
Click to expand...


I hear that :iagree:
Click to expand...

Great, I'll PM y'all my address and y'all can send me some. :wink:
 
all I can say is if you whant to play you got to pay
 
Which set combination would be best in the long run? If I can it to run good w/ one carb and 28's, will duals need the same or smaller venturi? Do I have to worry about the shaft seals when I soak 'em?.
 
kellysguy said:
I want to clean up the Alfa carbs. Somene mentioned a leather shaft seal on these. Do I have to pull anything off of them before I soak 'em or just go ahead and teach them to swim?
Click to expand...

Well, what's the word on this? They o.k just to put 'em in the juice or do special precautions need to be taken for the shaft bearings and seals? I tried to remove the washers on the shafts to see but didn't have any luck.
 
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