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Jeremy's Cheap Carb Information Page I do no claim to be a carb expert by any means. This is just the information that I have found browsing the net in search of an affordable alternative to the junky BBD carburetor found on jeep 258 straight six engines. You can always e-mail me at jporier@ccu.edu. You will not find any weber carb information here because these are "affordable" alternatives and I consider $400 not affordable. From what I hear though, it is an excellent carb Helpful Hints I would also recommend the HEI upgrade. I did mine and it was the best $100 I ever spent on my jeep. Happy jeepin. Send any other info you may have to jporier@ccu.edu Articles are listed from the most useful at the top, to the lest useful at the ottom (in my opinion anyway) Instructions on how to rebuild the 2100 is found at this site. Take them for what they are worth. |
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Hey, there's rally nothing to it. I was ready to sell my Jeep and I wasn't willing to spend almost $400 for a Weber. I ran into a lot of dead ends from all of the people you see advertising in the mags. I ended up tking the old carb gasket rom my BBD to a local auto parts store. I told them I wasn't sure what it came from (say he Jeep word and I've had too many just say NO). Turns out the Jeep shares the same bolt pattern as the old rochester one barrel found on early chevy straight sixes. They cross referenced the Rochester no problem. the adapter I bought is made by Transdapt, Mr. Gasket also had one but it was more universal fit (had slotted holes). I went to a local salvage yard and bought a Carb from a 80 Econolie van with a 302 and a autotrans. If you go with the truck line get one from a truck with a 351, the 302 trucks have the 2000 not the 2100 motorcraft. I bought a rebuild kit and rebuilt it purely for my own piece of mind. Installation was sweet. If not for the adapter being seen you could not tell it from a factory setup. The fuel line is a direct match. I removed all the wiring that went to the BBD and left all sensors intact, the factory electri choke terminal even works with the MC. I removed all vacuum lines and any wiring that went to vacuum headers. I then ran the vacuum advance and the EGR from the port on the MC. I hooked the PCV and the vapor canister into the intake vacuum port located just under the carb. I put a 9' K&N air breather on it and ran the rear valve cover vent t the breather with no PCV. The only real fabrication was the throttle linkage and that isn't much. I removed the linkage from the BBD and hooked it to the Jeep throtle rod. I held it against the ford linkage and decided on a good position that would work OK. I used a pair of vice grips to hold the linkages together while I drilled two 3/8 holes through both linkages. I bolted them together with 1/4 bolts with nylon bushed nuts. I had to bend te throttle rod slightly due to contact with the EGR valve at full throttle. The MC linkage works perfectly with my return springs hung where the ford throttle cable would have been.
TOTAL $77 John C |
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: I have an 86 cj-7 with the computer controlled carb and I was wondering if I culd replace the carb with an older version, say an 80-82 version, that was not computer controlled. Is this a possibility? I don't see the reason for the nutter bypass if this is a feasible option. : Justin
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For the all the Motocraft carb lovers on the "L" (or prospective lovers) here are some spec for you. I got these from a mechanic at work, I'm also among some people on he list who work for Ford. These re flow rates for the carbs. I think these model numbers are cast on the driver or passenger side of the carbs.
This is for the 2 barrels by the way. Marc |
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: I need info, I called summit and od them that I needed an adapter to mate the Motocraft 2100 carb to my 258 89yj and they didn't know what type to sell me. does anyone have a part number ? Some more questions I'm going to rebuilt it do they sell complete rebuilt kit or is it just like the bbd just gaskets, I would like needle valves. What's the CFM on this Carb it 300? can I change the jets or will be all right the ay it is and where do I get the jets if I need to change them ? I was looking at the carb and it seems to be in good condition,It was in a ford van only 23 bucks and change and no rust what's so ever. I was also thinking about installing the original air intake housing It can be adapted but don't know if it will interfere with the air coming into the carb? PM and anyone else help would be great. can't wait to try this baby on... Don't buy an adapter, make one. Making adapters is so simple it should require a license. If you want info reply on this board and I'll tell you,and everybody else. It will cost about $4.00 for the raw materials. I think the old Holley 17-3 adapter will work but it's not made anymore. Don't quote me on that. TD Performance makes an adapter but it's garbage. You'll pull your hair out with the rich-lean swings if you use that one. |
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: : Will a 2100or 2150 fit an 258? does it need an adapter? or will it bolt right on? 89yj 258 It came on many vehicles, too many to list (I don't know them all) and it needs an adapter. asking an adapter is really, really easy and cheap. You need an adapter, Offenhauser offers one, it is the same adapter as the Holley 2 bbl uses. Mike |
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:: In what years and in what cars did Motocraft 2150 come in? : : PS it's a 89yj six cylinder I've got one in an '82 wagoneer w/ 360 Motocraft 2150's were stock on 181 304's and 81-91 360 AMC/Jeep engines. Mike |
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: PM, Call Recarbco (800)282-2272, you ill be looking for a part #C2910 since this one has an elctric choke. The other choice uses a Climatic control choke and it #C2918. These are Carter BBD cabs without the electronic stepper motor that bolt directly to your stock manifold. Mike |
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: Hi Mike and everybody else: : Could it be the power vale? If its ever back fired through the carb will it burn the power valve : well i'm going to also replace the execrator pump diaphragm as well was leaking through the gasket : Please help me solve this problem before it KILLS me :: Keep Jeeping :) : The power vale (Ford refers to it as an economizer valve, is not working and should be replaced, sometime they leak at the threads. MIke |
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: : On my 79 CJ7, 304 ,T150 If it sets for about thirty minutes after warm up the carb leaks fuel into the cylinders causing it to flood. It starts back up if you old it to the floor but I would rather not do that. I rebuilt the carb and everything looks good what could cause this. Its the Motocraft 2150 I blieve. I even ut a pressure regulator thinking it might be getting to much but it didn't help. : Replace the power valve, it is leaking. Mike Power valve really helped a lot. It even idles a lot smoother. THANKS!! |
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: Got the Motocraft 2100 carb, plus rebuild kit, plus air cleaner, A pat number for adapter 17-3, so good so far, What else should I do with all the vacuum lines? What lines do I cut and cap off, It's a 89yj with HEI ignition. What do I set it to there are too many setting for it on the carb kit Is the 255ci setup the correct one? it's the closet engine size to my 258. What's the cfm on this carb heard it was 350? any help would be great. : Rifleman The PCV is the big fitting on the base and you need to hook it up there are 2 small fittings on the base on the right side goes to the distributor, looking at the 2100 the same side as the choke housing is on, you can plug the other as you are not emissions legal to bein with. 350 sounds about right for the cfm. make sure that what ever base plate yo use clears the economizer valve housing on the bottom, the V8's use a plastic insulator that has a "cutout". Mike |
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How about that! I literally went through the exac same thing this past week. I drive an 83 CJ7 and was ready to sell it if I couldn't et it right. I took it to two shops and they told me the Carb needed to be replaced. After doing so, guess what? the same problem. I took the BBD back and began a quest to cure this thing. Seems the only after market carb is the Weber kit you see in the Magazines, Pricey. I discovered that the BBD bolt pattern is the same as the old Rochester 1 bbl. (screaming' chicken ) carb. This opened some doors. Nobody can cross an adapter o put a large 2 bbl. on a AMC 258, but everybody can cross an adapter to put a l |
