Thread: Rochester jet size ?

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No hi-jack intended here but I did my dual Roch one barrels with fine steel wool and kept them that way with just the steel wool every now and then. I'm sure there are better ways but I'm lazy and always take a similar approach.

Originally Posted by MelloYello

No hi-jack intended here but I did my dual Roch one barrels with fine steel wool and kept them that way with just the steel wool every now and then. I'm sure there are better ways but I'm lazy and always take a similar approach.

Those look nice!

Thats all I did was steel wool off the crust on mine......tryin not to make this project a tribute to shiney things...plus I anticipate lots and lots of dirt and mud on this rig.

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This is the end result....better than it was and internally like new......this one will be covered by a huge breather anyway....I admit it was hard to resist polishing the aluminum out though.....

Now just have to drill and heat,spray and cuss and easy out the bolt from the intake carb mounting pad and I can see if it was a sucessful rebuild.


Then bend up a new fuel line from the pump...some one cut the metal one and inserted a fuel filter between the pump and carb........I will put it back in the fuel line just after the tank mounted to the frame.....I do not trust unknow rubber hose,a clear plastic fuel filter and hose clamps under the hood where if it leaks or fails fire is a sure result ...

We have sucesssssssssssss...........had to drill the bolt out,thank goodness they used what I call butter bolts.....no hardness rating,soft as butter.......drilled it out,tapped and hammered around with the screw driver and got the rest out,tapped a bolt down into it to clean the threads.

Now just have to get if fired back up and see what happens......they had the main fuse filled with aluminum foil and wire because it kept blowing,at least it had a fuse, discovered it was the loose ignition switch turning and shorting a wire out....turns out the ignition switch tumblers are bad and it makes it hard to turn,which resulted in it working loose and rotating causing a short........

Off to get fuses and a new ignition switch..........I did discover under the dash some one had installed a nice new fuse block with spade fuses...that will make cleaning the wire mess up a lot nicer as I would have done that any way.....things are looking up

Well poo.......idle screws still have to be 4.5 turns out approx to idle without my hand over the carb.......still has a flat/dead spot off of idle.

The new ignition switch works fine and instead of the 4 dollar maxi fuse as a main, I got one of the large breaker fuses for 3 dollars more...no more replacing that, since it has a good new blade fuse box under the dash I saw no need for a maxi fuse under the hood as the wire ran to the main fuse box and all wires are fused off that.


One funny thing I noticed was the cast iron carb base has 2 good sized holes running to right at the butterflies.....never seen this before on a carb...not that I have seen a ton of carbs before......but these are made into it and run at a 45 degree angle from the base plate stud holes to right at the butterfies/.....

Seems like this is a giant vac leak to me....they look factory and not cobbled in......maybe the base is for another application and just donored onto this carb.......

It runs pretty much like it did before the rebuild......idle screws over 4 turns to even idle....giant flat dead spot off of idle, really puffs black smoke after letting off.........does seem to idle cleaner now though.

Thinking I might just get a rebuilt motorcraft 2100....the carb seems to focus point of alot of issues with this jeep......black tail pipe,black plugs....was definaty wrenched on alot before I recieved it,had a busted bolt from taking the carb off before I got it. Heli coil on one of the carb screws.

Usually not a get new parts type guy......but this carb might have had some serious cobblers inside of it drilling, plugging and mix matching stuff over the years.Who knows what this carbs original application was as it old enuff to not have numbers on it, it had the metal tag that is long gone....

Not sure what to do at this point on the carb......

On a side note......right after this the starter made a little grind noise starting it for the last time,pops happened to look on the ground and ask wonder what this bolt is from......the big bolt going straight up thru the starter sheared off....

Looks like it was well on its way for a while as there was only a small shiney spot towards the middle of the shank....guess it was waiting on me to fully shear....