Jetting

[keithm]

I need to change the jetting on a 2150 carb, it has a a9f in it. I need to go a few steps leaner but can't find a listing to see what that number would be. Any ideas?

 

[John Smith]

a few thoughts..

what venturi is it?...how's your fuel mileage/power?...what motor?..(302 I assume)..

Most 2100's/2150's I take apart have 46-49's in them..the smaller venturis..

I am running a .052 in my 5.8 Windsor and it seems about right...(1.14.Venturi)

I would say somewhere a .046-.048 would be where I would try first in a 1.08 v carb and see what the plugs read...

Don't 4 get to check the power valve circuit..and maybe choose one that is about 1/2 or less of your rated idle manifold vacuum...

 

[kimcrwbr1]

You need to pull the jets and see what are in there. I just purchased some here am going to try the #43s in my 2.8 with a 1.08 venturi just be careful when jetting too lean will cook the valves and pistons.http://www.ebay.com/itm/320808199535?ssPageName=STRK:null:IT&_trksid=p3984.m1542.l2649