Jet & metering rod sizes

[Chief1010]

Is there a site or book I could get that shows the factory jet & metering rod sizes ?? I have a couple of Qjets I can rebuild, but would like to know factory specs of it.. Any info would be greatly appreciated..

[Ethan1]

Is there a site or book I could get that shows the factory jet & metering rod sizes ?? I have a couple of Qjets I can rebuild, but would like to know factory specs of it.. Any info would be greatly appreciated..

 Post the part stamping numbers on here and I will let you know. 

[Chief1010]

17057204 & 17057213.. And will both carbs interchange with each other?? The secondary shaft is froze on the 17057204..

[Ethan1]

17057204 & 17057213.. And will both carbs interchange with each other?? The secondary shaft is froze on the 17057204..

 Carb 17057204 came stock with .077" Primary Jets, 52K Primary Metering Rods, "K" Secondary Hanger and CH Secondary Metering Rods.

[Ethan1]

17057204 & 17057213.. And will both carbs interchange with each other?? The secondary shaft is froze on the 17057204..

 Carb 17057213 cam with .064" Primary Jets, 40B Primary Metering Rods, "K" Secondary Hanger and DP Secondary Metering Rods.

[Ethan1]

 As for your last question, no, I do not think any of the parts will interchange. Specifically the throttle body. Sorry.

[Chief1010]

Thanks again for the info Ethan1.. That sucks.. The 204 seems like it would be better to use for my application.. And by going by what you wrote. Having a 77 Primary Jet in one and a 64 in the other is a huge difference.. I never would have thought that the carbs would have been jetted that differently.. Shows what I know... Since the carbs won't interchange, will not of the parts either ?? Like the secondary rods ?? I have ordered Cliff's book, just not here yet.. Was told that using certain secondary rods are beneficial in a high performance application. Thanks again..

[Cliff Ruggles]

The 17057213 can show up with a variety of jet/rod combinations despite what the Master index shows.  I've seen a number of them show up with .063" main jets and 37B rods in them.  Also have had quite a few show up with .064" main jets and .037" rods.  The factory custom tuned a lot of the later units, and this is not uncommon.

Anyhow, those carbs share very little between each other, about all that switches from one to another would be the secondary metering rods and a few other small parts.  None of the major parts swap out.

Both are nice units, I like the 204 carb better because it has the later APT system and converts easily to E-choke.....Cliff