carb upgrade possible?

Axel Kain

New Member
Jan 30, 2006
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Midlothian Va.
wandering the junk yard...found a 4 eye capri, had a 2.3 in it i believe. the main thing was that it had a 2 bbl carb. and im not sure, but couldnt I swap the intake, and carb setup from that, to my 2.3L 86 stang? just looking for an easy fuel milage/performance upgrade.
 
Yes you can! I just did exactly what you are thinking about. I converted my 86 capri 2.3L to the early 2 barrel carb setup. If you need a list of what to get off the car and how to put it all together, I can help you out. It's fairly easy. What was the year of the car in the junkyard? Basically, you will need the carb (and related parts), throttle cable and bracket, egr adapter under the carb, the distributor and duraspark box, air cleaner, and some other small stuff. You have to convert to the duraspark igniton system since removal of the feedback 1 barrel carburetor will make the ECU lock your timing at 10 degrees. I would say conversion to the 2 barrel carb is worth it. More CFM's of airflow, no computer, more control over the engine, less wiring, and the duraspark system is basically plug-and-play with the MSD system. In fact, I don't even have a duraspark box for my ignition. I have the distributor signal going right into the MSD box and the box then controls firing of the coil.
 
It won't be super cheap, but it will make the car a little easier to tune. Yes, you will need the whole air cleaner- lid, bottom, and black tube to the fender. No, you don't need the actual intake- just the egr spacer below the carb and the carb. Make sure you get the throttle bracket that bolts to the intake and the throttle cable. Not sure if you're in an emissions area, but if you are, snag the whole vacuum harness and thermactor parts. Get the distributor and duraspark box and harness (cut yourself enough of the green wire so you can splice if needed. Like I said, as for wiring up the duraspark box, I'm not 100% sure on how to do that as I am using MSD instead, but I think I did figure out how you would wire it. Your current spark plug wires will work on the duraspark distributor. I would however put at least a new cap and rotor on that. If you can get the year of the car that you're getting all this from, keep it in mind as then you can use the matching vacuum diagram in a Chilton's manual and rebuild your vacuum harness off that. Honestly, I know you're trying to do this on a budget (as did I), but I would highly suggest using an MSD box. If you do use the duraspark box, it would involve some creative wiring and addition of a ballast resistor. I'm not even 100% sure if you can use the TFI coil with it. Using the MSD is a little more expensive, but it is basically plug and play and there are no resistors needed and you can use your TFI coil. It also helps you tune it out and improves power and economy. I used the MSD 6 box, duraspark distributor harness adapter, eec iv coil adapter, and the 8920 tach adapter (need that if you want your factory tach to work!). I installed the whole setup in maybe 2 hours. The carb and the rest of the stuff went on fairly easy as well. When eliminating the EEC harness, unplug all the sensors and actuators first. then unplug the connections behind the left strut tower (below the wiper motor) begin to fish the harness out of that corner and away from the engine. Be careful- Ford for some reason ran the oil sensor wire in the EEC harness. Just cut the wire and pull it out and away from the harness and reconnect it to itself after harness removal. Once you've got it all out and away from the engine, pry the large rubber grommet out of the firewall. Work inside the car then and remove the computer. Then remove the small power relay. Then begin feeding the wiring back through up into the engine bay. It take a LOT of wiggling, but it does all fit. Cut the large rubber grommet off the harness then and shove it back into it's hole and put butyl tape or silicone into the hole left from the harness. That frees up lots of space around the carb and the back of the engine to start the swap. Rebuild kits for the carb aren't cheap. Advance auto has them but they are 75 bucks. NAPA said it would be a special order and they weren't sure about getting it then. Be sure to order the correct one for the carb (check the tag attached to it for the part #). If you want a K&N filter to fit the round air cleaner, it is part #E1200.
 
Well, I suggested the MSD setup because it makes installation easier and I know it will work prefectly. You can go the duraspark box route, but you will have to basically fab a harness to connect in to your factory harness ends and you will need a ballast resistor. The MSD stuff can be had from JEGS. 120 some for the msd box and 50 for the tach adapter, and another 40 for the 2 harness adapters. As for power gains and such, it's not massive. The only thing that I noticed is that when I'm going up hills now, I don't have to have my foot so far into it. It also seems to take off a little quicker too. Aside from the carb and ignition upgrades, you can put a roller cam in your engine. They can be had out of any dual-plug 2.3L (90-97 Ranger, 91-93 Mustang). It will allow your engine to rev quicker and smoother and will keep your oil a little cleaner too. I put one of those in 3 years ago and it seemed to increase power very slightly. A header from a 94-97 Ranger should increase power more signifcantly. I have one but haven't installed it yet. A better flowing converter wouldn't hurt either. The stock ones are horrendus. But as for just doing the carb, it basically sets the stage for more mods and also gives you a bit more adjustability and a small increase in power.