Carb jets

[wally426ci]

can anyone say if secondaries are normally larger or smaller than the primaries? i upsized both but i only have one set of each size, so i cant use the same size twice if that makes sense....  <---- ongoing

[Chryco Psycho]

generally yes they are but not on all models of carb ,what is the list #

[wally426ci]

smaller or larger?

i have a 1407
i think it originally had the 407 jets primary and secondary, but not sure, they were pretty dang hard to read...

[Chryco Psycho]

Eddy carbs are different ,they use a metering rod in the front jet & may even have a larger jet in front , there are 2 #s as well on the jets , you probably have a 107 jet

[wally426ci]

yeah, theres 2 numbers, i was just going by the one set of numbers. im running 413 on the metering rod jets, and 410 in the other....

im just trying to troubleshoot this POS. 

[GoodysGotaCuda]

Thats a pretty good size pair of jets, what metering rods?


..And dont call it a POS because ya can't fix it, gotta be smarter than the jets (just jerkin your chain  )

[wally426ci]

  frustrating thats all...

Im trying to think of my metering rod sizes.... i need to look.. I think its the 6359's??? pulled that out of me arse... but it sounds close..

Ive just been bummed this week  , so i took a break. Im hoping to get a few hours in this weekend. 

[Swedefish]

Do you got the manual for the Eddy carb? If not visit the Edelbrock site and download the manuals, they are handy to have 

[wally426ci]

I do have the manual, I just dont have a Dyno so its not the same "tuning with ease" not to mention, when i encounter a problem, i have no idea what to change and not to change. Ive had carbs apart but im not a "racer" so i am far from an expert of tuning.

QUESTION:
am i going to mess with A/F mixture once i play with the timing? I was doing the aparent "No-No" of idling it up when it ran like sh!t once i pulled the timing back to the recomended 12-14....... @ idle with advance plugged.

 

[wally426ci]

I was just thinkng, maybe i need to up my Fuel pump. It ran fine before with this stock Autozone peice, but maybe i should get a Carter or something now that im jetting. I had one but it leaked its A** off.

 

[hemiken]

Hi Wally ,

Do you have a fuel pressure gauge anywhere on the car ?

[wally426ci]

No i dont Kenny..... 

[hemiken]

It would be good to see if your pump can handle its fuel delivery when excellerating under load.   If the fuel pressure drops off severly, you may have to fit a better pump then.   Fit a fuel pressure gauge on buddy, when you get the chance.

[wally426ci]

Thanks Kenny, I'll get to it....