Whata the best jetting for a weberized ea71

I think that would mostly depend on your elevation...im at 8000 ft, and so my jets are fairly small (120 primary, 125 secondary)

Whats it got in it now?

140 on both works well here at ~4000 ft. (stock size jets)

Ok im at or around 3000 feet + or -

Ill post my sizes when get home.

Ok my jeting is primary air corrector-170. Secondary air-180. Primary main-130 secondary main-150 idle jet primary- 60 secondary-50 any help greatly appreciated

mains 140/140

Primary air 170

Secondary Air 160

idle jets 50/50

Ok would my jetting being like it is cause bad mpg? Like 17mpg?

I bet your 130 is pretty close to correct, but that secondary jet is likely too big. If you stick your foot in it a lot, that could definitely contribute to lousy mileage (the secondary bein too big)

Given it a tuneup lately? 17mpg is horrible!

New plugs wires, rebuild on carb, throttle shaft bearings, lean best idle tuned. It has 205-65 directional mud treads on it tho

Just try driving like a grandma for a tank and see how that goes

I will do that next tank. I think i will order the replacement jets one day, maybe itll help i had seen on here a guy got 32mpg in a 2wd wagon with that jetting

Based on what you have, the most important jet you should change is the primary idle jet.

Edited February 13, 201412 yr by ferox

Ok would it be worth it to get them all to what they need to be and with that primary being off ehat would it do to my brat?

Ok would it be worth it to get them all to what they need to be and with that primary being off ehat would it do to my brat?

It's easily worth it to get the exact correct jetting.  There are very few automotive parts that have a greater benefit/cost ratio than proper jets. 

 

With the primary being that rich you would get shitty gas mileage and it wouldn't idle very well with the idle screws set within Weber spec.

 

I would order a 45 idle jet along with a 50.  The less you have to turn in the idle speed screw to achieve stable idle within spec, the better your throttle response.  As you go down in primary idle jet size your idle speed should increase which should allow you to dial back the idle speed screw.  With an ea71 and larger tires you're probably going to want all the throttle response you can get.  With a decent ea71 and mud treads at 3,000 ft I would expect to get 21-24 mpg depending on the tires and driving style.

Ok my idle is very erratic now

What about an Iowa Guy with an elevation of 761 feet driving a 1979 Brat with a EA71.  Idle is not smooth and I have to turn the idle adjustment screw out like 3.5 times before it sounds good.