Holley 94 ECG, rebuld but problem
 

On my 286 ci stroker I use to run brand new edebrock 94, unfortunately cfm is too low, and decided to buy 2 rebuild ECG that flow 195cfm instead of 155 for the Edelbrock

Install 46 main jets and bolted on, car fired up right up, revs perfectly when not in load, then I decided to drive it

first gear and go, but the engine is strugling, no power, if sounds that there is no fuel, or no ignition, put the clutch pedal down, and the engine is reving with no problem, tryed a few miles, but no power fell weird...

Any ideas of the problem?

thanks for your inputs

Peter

Re: Holley 94 ECG, rebuld but problem
 

Pete, just my opinion, but why so small on the jets? My 2100s like 51 or 52s, I would be looking at bigger than that on ecgs, although I must admit I have not run the bigger carb. myself. It is something I am looking at though.

Mart.

Re: Holley 94 ECG, rebuld but problem
 

+2 on Mart. With your size engine I would at least start with 49-50 jets. Walt

Re: Holley 94 ECG, rebuld but problem
 

Ok, I will try bugger jets as suggested ;-)

On the Edelbrock 94, my jets are 45 and it is just good!

thanks

Re: Holley 94 ECG, rebuld but problem
 

Find the spec...your need is going to be close to the original size, maybe one down but not far from OEM.
ECG is 1955-6 Ford? Not sure on these later ones. I think this is the model with the round secondary venturis on the nozzles? I may have the specs at home. The common use of "94" as though it were a model number has really confused conversation on these things. These are of course not 94's, and have a number of changes that would affect jetting...maybe in ways that cancel! The bigger venturis would lower signal and demand bigger jets, the secondaries might well increase signal and cancel that out! Gotta start at or near factory jets.

Re: Holley 94 ECG, rebuld but problem
 

The ECG/ECC's come with #55's in my experience

Re: Holley 94 ECG, rebuld but problem
 

There's your starting point! Get 55-54-53 and mess around in that neighborhood.
I repeat, these are not 94's...change the venturi size and stuff happens.

Re: Holley 94 ECG, rebuld but problem
 

I agree with you on the seems weird. While I agree the .046 jets are a bit small for your engine but it shouldn't be as noticeable as you indicate. Might feel a little sluggish but not as you indicate,.

I believe you have a coincidental issue that came up, sounds like your coil might might of gone bad. The symptom that ques me is the one where you indicate, under no load with clutch in it seems fine then under load no power seems fuel starved. Worth a check.

Re: Holley 94 ECG, rebuld but problem
 

The 046 is off the map...these are carbs with much larger venturis than a real 94, and what is right for a 94 is not applicable.

Re: Holley 94 ECG, rebuld but problem
 

055 to 046 is a huge jump.

Re: Holley 94 ECG, rebuld but problem
 

Reflecting on Posts 2 and 3, have stock 286 running Holley 2100 with a 50 PJ. Performance-wise is a perfect match-up.

Re: Holley 94 ECG, rebuld but problem
 

I totally agree that the 46 jets are way off on the ECG. You should only be 1 maybe 2 sizes off stock for the carb. Going to far completely buggers the air/fuel curve. It's a fairly common mistake to make.
Martin.

Re: Holley 94 ECG, rebuld but problem
 

Several people here are discussing 94 jet sizes. This is not a 94, it has very substantially different venturi size.

Re: Holley 94 ECG, rebuld but problem
 

Here's a spec sheet for a typical Y-block Holley model 2110 (the EE version).
http://c796480.r80.cf2.rackcdn.com/1...carburetor.pdf

Main jets #55 at sea level

Re: Holley 94 ECG, rebuld but problem
 

Hi!
Is this carburetor…ECG 5 you are talking about?

Re: Holley 94 ECG, rebuld but problem
 

Yes, that looks like it.

Re: Holley 94 ECG, rebuld but problem
 

I have a Holley specs manual and the ECG-6 carbs (1956 ford 272) call for #52 main jets for 0 - 5,000 foot altitude. I bought 3 of these carbs to make a tri power set up and they all had #52 main jets. These are 1 1/16" venture carbs that have the larger round secondary venturi's.
I think the new Edelbrock 94 carbs probably have a different calibration and less air bleed venting to the main well, causing the need for the smaller main jets. I believe the ECG-5 carbs (1955) may have had #50 main jets.

Re: Holley 94 ECG, rebuld but problem
 

I think the question should be:
What is the actual list number on the carburetor base? ECG (what)?

Also, What is a larger round secondary venturi???

Re: Holley 94 ECG, rebuld but problem
 

Some of the later big bore 2 barrels of this family have a secondary venturi ring as part of the nozzle bar...I think the ECG has this but I am not certain. Some of the last Ford carbs of this tribe definitely did.

Re: Holley 94 ECG, rebuld but problem
 

Thank you, Bruce
I am unfamiliar with the 2 bbl carbs, but intimately familiar with the 4 bbl versions, that have a booster (maybe that's it?)

Re: Holley 94 ECG, rebuld but problem
 

Yes, a second complete venturi at the point of lowest pressure in the big venturi.
On these carbs, it is built into the removable nozzle bar, replacing the slanted type used about 1952--early Y blocks.
So far I haven't gathered much info on the later Ford E carbs...there are a lot of variants!

Re: Holley 94 ECG, rebuld but problem
 

That's called an "annular discharge booster venturi", it was one of the big improvements compared to a 94.

Re: Holley 94 ECG, rebuld but problem
 

Yes, it's the same as a booster. A smaller venturi in the middle of the main venturi.

Re: Holley 94 ECG, rebuld but problem
 

Ok, thanks a lot for your replies, I will try the 55 MJ asap"and let you know !

Thanks a lot again ;-)

Re: Holley 94 ECG, rebuld but problem
 

Ok,

Here are the news
One of the carbs have 47 jets but the other one have 57... ;-(

Unofrtunately I do not have 57 jets but 55, I have tried, and big improvement!

The engine rev instantly and I still have little struggle at high rpm...


I now have ordered a O2 air fuel ratio controler, I will check with this gauge for better tuning, keep you posted

Re: Holley 94 ECG, rebuld but problem
 

I have the same carb. on my 260 cu. with 53 jets works real good. Jack

Re: Holley 94 ECG, rebuld but problem
 

I have sets of #54, #55, and #57. No need of them, if you want them let me know.

Re: Holley 94 ECG, rebuld but problem
 

Yes please!