Autolite Jetting

[Falcon67]

Good info.  I have a old cigar box somewhere with 2100/4100 parts in it.  Have to find it and see if there are any jets.

[Royce]

Wow you guys have gone above and beyond the call on this one  Shout out to Kevin...I'll try to decipher that last letter on the carb I have, but it looks like the chart shows an application for 352 auto.... Next step take the top off the carb and see whats in there.. I was thinking a middle of the road 6.5 power valve should do the trick..
One other question.. I remember hearing about how guys would make a little modification so that the secondaries would open mechanically... Anybody recall how that is done.. This would be for dyno testing purposes only

[shady]

I do it with a steel fishing line leader. Works well and with the leader being stranded ss it won't break.

[wayne]

Ebay has some kits to make a 4100 mechanical look under vintage mr gasket they work well i have used them for years.

[FE4SPDMustang]

Is this the kit you're referring to?
https://www.ebay.com/itm/143882037742?hash=item218009a9ee:g:6HkAAOSwCyZf0AZu

[Royce]

Thanks guys  just what I need.. Dyno operators hate vacuum secondary carbs. Hard to get a consistent pull.

[wayne]

Yes that is one of the kits the one with 1528 part number also has it plus one for a holley

[cammerfe]

Holley jets are listed, number-wise, not only for the orifice size, but exactly how the lead-in and lead-out of the hole is treated. You might well have several that have the same hole size but a somewhat different chamfer configuration.

Ford jets might well be the same.

KS

[Dubs1]

Hi Royce

There is a shop here in Denver that sells all sizes  for the 4100 and 2100 over the counter.  I will go by tomorrow A.M.  get their address and phone  and get back to you.  And yes they are priced very reasonably 

All the best

Larry  in Denver

[Nightmist66]

Will these work?

https://allcarbs.com/product/motorcraft-ford-autolite-main-jets/

Have dealt with this place many times. Great to do business with.

[Lowrider]

Ebay has some kits to make a 4100 mechanical look under vintage mr gasket they work well i have used them for years.

Had one of those on my 56 Ford Yblock back in the 60's. Recently I made one from memory for my 79 Ranchero. Had to tweak it some but it works fine.

[Royce]

Thanks Jared..  I have worked with Allstate carb in the past.. My carb has 48s in the primary which is listed as correct, but the jets in the secondary are not numbered,, looks like someone filed or sanded the top maybe to remove a burr from an ill fitting screw driver.. I'll probably order a set just to be sure what I have.

[RJP]

Will these work?

https://allcarbs.com/product/motorcraft-ford-autolite-main-jets/

Have dealt with this place many times. Great to do business with.

X2...I've also dealt with Allcarbs many times. Great service.