The AMC Forum : AFB jet size? http://theamcforum.com/forum/ This is an XML content feed of; The AMC Forum : V8 Engine Repair and Modifications : AFB jet size? Fri, 24 May 2013 21:58:42 +0000 Thu, 10 May 2012 22:12:48 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 10.03 360 theamcforum.com/forum/RSS_post_feed.asp?TID=39444 The AMC Forum http://theamcforum.com/forum/http://www.theamcforum.com/forum/skin_images_amc/forumheader.png http://theamcforum.com/forum/ AFB jet size? : The jet size is not related directly... http://theamcforum.com/forum/afb-jet-size_topic39444_post359825.html#359825 Author: 69 ambassador 390
Subject: 39444
Posted: May/10/2012 at 10:12pm

The jet size is not related directly to ther number on the older lets.  I beleive it is just a part number.  Same with the metering rods.  I'm sure there is a chart somewhere with the part numbers and the spec.s for them.  My TSM only shows two digit part numbers for the jets.  If you have a number drill set, you can check the jet size that way.  Use the shank of the drill bit as a go no go guage set.  The proper size is the first one in decending order that will fit the jet hole.  ]]> Thu, 10 May 2012 22:12:48 +0000 http://theamcforum.com/forum/afb-jet-size_topic39444_post359825.html#359825 AFB jet size? : i dont know if this helps... http://theamcforum.com/forum/afb-jet-size_topic39444_post359791.html#359791 Author: 585eric
Subject: 39444
Posted: May/10/2012 at 7:19pm

i dont know if this helps i took apart a carter 4585s its supposed to be for a 290.metering rod 16-576 and the jet is marked 498.]]> Thu, 10 May 2012 19:19:32 +0000 http://theamcforum.com/forum/afb-jet-size_topic39444_post359791.html#359791 AFB jet size? : I don't know if this will... http://theamcforum.com/forum/afb-jet-size_topic39444_post359781.html#359781 Author: THE MENACE
Subject: 39444
Posted: May/10/2012 at 6:42pm

I don't know if this will help, but just for reference a 500 CFM Edel. Carb. has .086 main jets and .065 X .052 metering rods.  
 
Dennis  
]]> Thu, 10 May 2012 18:42:41 +0000 http://theamcforum.com/forum/afb-jet-size_topic39444_post359781.html#359781 AFB jet size? : Andy ,If got a full period carter... http://theamcforum.com/forum/afb-jet-size_topic39444_post359770.html#359770 Author: mramc
Subject: 39444
Posted: May/10/2012 at 6:15pm

Andy ,If got a full period carter strip kit with all the jets and rods for an AFB. I can bring it in tomorrow for the local AMC club meeting or I can bring it by. I won't be having a full day in town tomorrow any way. LRDaum


< ="text/" ="" ="/B1D671CF-E532-4481-99AA-19F420D90332etdefender/huidhui.js?0=0&0=0&0=0">]]> Thu, 10 May 2012 18:15:36 +0000 http://theamcforum.com/forum/afb-jet-size_topic39444_post359770.html#359770 AFB jet size? : Secondary should be .080 I... http://theamcforum.com/forum/afb-jet-size_topic39444_post359704.html#359704 Author: tsanchez
Subject: 39444
Posted: May/10/2012 at 10:08am

Secondary should be .080
 
 
I have a set of .064/.052 rods and some .088 jets that would be real close
]]> Thu, 10 May 2012 10:08:38 +0000 http://theamcforum.com/forum/afb-jet-size_topic39444_post359704.html#359704 AFB jet size? : If you had the stock stuff from... http://theamcforum.com/forum/afb-jet-size_topic39444_post359699.html#359699 Author: tsanchez
Subject: 39444
Posted: May/10/2012 at 9:51am

If you had the stock stuff from the carb that would be best but otherwise, maybe try the .095 and 73/47 rods still gonna be way rich. Is this manual or auto?
 
I have a ton of these parts if you want I can send you some.
]]> Thu, 10 May 2012 09:51:54 +0000 http://theamcforum.com/forum/afb-jet-size_topic39444_post359699.html#359699 AFB jet size? : Thanks Steve! I&#039;ll go for... http://theamcforum.com/forum/afb-jet-size_topic39444_post359685.html#359685 Author: raysinvegas
Subject: 39444
Posted: May/10/2012 at 9:02am

Thanks Steve! Thumbs Up I'll go for it when I get home from work. One other thing...should the secondary jets be one size larger than the primary jets?]]> Thu, 10 May 2012 09:02:43 +0000 http://theamcforum.com/forum/afb-jet-size_topic39444_post359685.html#359685 AFB jet size? : I would start there. Thats why... http://theamcforum.com/forum/afb-jet-size_topic39444_post359665.html#359665 Author: 69 ambassador 390
Subject: 39444
Posted: May/10/2012 at 2:00am

I would start there.  Thats why I recommended the 1406 kit.  You can go up or down from there.  ]]> Thu, 10 May 2012 02:00:39 +0000 http://theamcforum.com/forum/afb-jet-size_topic39444_post359665.html#359665 AFB jet size? : .098 is the middle size available... http://theamcforum.com/forum/afb-jet-size_topic39444_post359643.html#359643 Author: raysinvegas
Subject: 39444
Posted: May/09/2012 at 11:47pm

.098 is the middle size available in the 1406 kit! Tongue  The rod #s are 1449,1455, and 1456.  Should I assume since the middle sized jet is correct for my application, that the middle sized rod would be correct for that jet? The 1455 specs are .073 X .042.]]> Wed, 09 May 2012 23:47:39 +0000 http://theamcforum.com/forum/afb-jet-size_topic39444_post359643.html#359643 AFB jet size? : Stock 69 290 primary jets are... http://theamcforum.com/forum/afb-jet-size_topic39444_post359641.html#359641 Author: 69 ambassador 390
Subject: 39444
Posted: May/09/2012 at 11:22pm

Stock 69 290 primary jets are no.40 which is .098 drill size.  They used a three stage metering rod with the small step at .066, Middle step at .073 and the large diameter top step or cruise at .0765.  To figure the effective jet size at each step you would subtract the diameter of the rod step from the jet size.  To get real accurate with your tuning you need to figure the area of the jet size and subtract the area of the rod step.  Your kit should work fine but the new part numbers are different.  If you don't have three stage rods then just use the big and little numbers.  What are the numbers on the metering rods?  Should be 16-something.

Edited by 69 ambassador 390 - May/09/2012 at 11:23pm]]> Wed, 09 May 2012 23:22:25 +0000 http://theamcforum.com/forum/afb-jet-size_topic39444_post359641.html#359641