Carb nozzle sizes

[sstocker31]

Hi guys,

First post here, but have lurked for a couple of years.
Just a few questions about carb nozzle sizes.
First off... do the nozzles generally flow more fuel as the number stamped on the side of the nozzle gets larger?
Second...is there a chart showing the different nozzle sizes?
Third...If the answer to question two is no....does anyone know the correct sizes for these nozzles?
47-719
47-728
47-734
47-741
Now I have measured all but the first nozzle, and want to see if the sizes you give me match with the sizes I've got to see if my nozzles have been "adjusted"

Any info will be greatly appreciated, Thanks

[sstocker31]

OK....no bites in a week and a half, so I'll revise my request.

I thought I'd try to make a database of nozzle sizes, so if any of you have a spare nozzle laying around, could you post the number of the nozzle and the #size of the jet.....any nozzle.....please......I don't want to have to beg......just dig it out of your spare parts and measure it......then I'll leave you alone......

[GrayHawk]

I'll see what I can gather up.

[sstocker31]

Thanks,That would be great......

[rvbuilder1]

In the process of drilling my nozzel due to lean running engine. Nozzel 47-728 is in my MA3SPA carb. It is number now 42 (.093) I will be taking it to #39 (.099) up .006.

[GrayHawk]

Here is what I had started to gather data. I'll try to figure out how to get post to keep the tabs or make it a table:

PART NUMBER DRILL DIAMETER FUEL FLOW
47-466--
47-652--
47-702--
47-719--
47-728-- 42 .093"
47-734--
47-735--
47-739--
47-741--
47-749--
47-750--
47-751--
47-754--
47-755--
47-757--
47-770--
47-773-- 950-970 cc/min
47-775--
47-779--
47-781--
47-803--
47-806--
47-813-- 715-725 cc/min
47-817--
47-818--
47-819--
47-821--
47-822--
47-826--
47-828--
47-830--
47-831--
47-833--
47-845--
47-846--
47-847--
47-850--
47-851--
47-852--
47-853--
47-857--
47-858--

[sstocker31]

Thanks GrayHawk....I'll give you a few that I have and you can post it to your table

47-734 ma3 carb .081"
47-741 ma4 .096"
47-828 pepperbox .095
47-719 ma3 coming soon


Anyone else want to jump in......

[MauiLvrs]

47-828-- 0.0935 #42 in MA4-SPA 10-5217

[MauiLvrs]

Originally Posted by rvbuilder1

In the process of drilling my nozzel due to lean running engine. Nozzel 47-728 is in my MA3SPA carb. It is number now 42 (.093) I will be taking it to #39 (.099) up .006.

That is a big jump if you do it in one shot.
We went from #42 to #41 and for now ... that seems to be enough for our O-320 MA4-SPA 10-5217

[GrayHawk]