Pete Olsen III

sorry to drag this from the dead but I couldn't find any good answers online so I wanted to post my solution somewhere.

I used the 4.0 efi intake and created my own carb adapter from a piece of 1/2 aluminum.

Then used a hei distributor. It's a one wire affair.


I hope this can help someone. I got no answers from any forums, only people replying with questions of "why go from efi to carb". Here is a real answer.

Fred/N0AZZ

You really answered your own question "why go from efi to carb". There are not any positive ones to be posted only negative's.


Sorry

Big David

Other than those obnoxious fumes, no reason.

Fred/N0AZZ

Well yes and the engine only lasting half or less as long as an EFI one would.

Vernons

how did this swap go? did it work for you and what all parts did you use on this swap. like if i was to go and ask for a distributor what would i ask for? cause everyone knows that when you look at the guy at auto zone you will always get that blank start lol like when i told then i had a jeep with a 350

minegun2

delete

seniorasi

My first question: How is the fuel delivered to the carb with this swap?

tech

Good luck off roading your XJ with a carb they do not like off roading , also your fuel mileage will go down , it's not going to start up cold morning very good it going to be cold blooded . you could have a sensor that is a little off causing problems , it's not out far enough to set a code . I would ceck all the grounds and power wires check all plug to make sure they are clean and tight .

seniorasi

Cool...I was just asking the original post how the fuel is delivered to the carb. Obviously the fuel pressure will be way too high for the needle valve and seat in the carb. My preference is for fi but I try not to pass up any opportunity to learn how someone else is handling an issue. My XJ will remain in my possession until they quit making gas or until I die, just sayin...

JohanCR Pura Vida

Probably I am one of the few ones that really agree with you about carbs and simplicity, actually I really like what you did. My question, how did it work compared with FI?? I am planning on doing the same to my RENIX XJ

Jorge Salazar Mata

[CITA = nrwphoto; 3138406] Tengo un XJ de 98 'que ha tenido gremlins eléctricos en el cableado interior durante ańos. También tengo una falta de potencia y mpg en comparación con cuando lo compré por primera vez. Lo he tenido en varios mecįnicos acreditados e incluso tuve que renovar la computadora hace un par de meses sin suerte. Debido a que he invertido tanto en suspensión, dirección, ejes, llantas nuevas y piezas miscelįneas nuevas cuando decidķ mudarme de AZ a MT, cargué el Jeep en un remolque y lo drogué aquķ. Cuando retrocedķ del remolque pude oler un corto eléctrico caliente. Bueno, ahora agota la baterķa en horas y puede extraer todos los relés y fusibles de la caja de control del motor debajo del capó y varios puntos en el motor (módulo CC, bomba de combustible y un zumbido maravilloso desde el lado inferior de la caja de fusibles ) todavķa tienen poder!: maldición::llorar:ared de ladrillo::ayuda:

Entonces, después de dejarlo reposar durante un par de meses, no quiero perder ninguna parte y realmente no quiero cambiar todo el arnés de cableado. Estoy empezando a preguntarme si puedo limpiar un montón de sensores y cables en el motor y convertirlo en una configuración de carbohidratos. No tengo que preocuparme por las emisiones / inspecciones aquķ, asķ que no hay problema. He leķdo sobre el uso de una ingesta 4.2, carbohidratos Holley o Weber, regulador de presión de combustible (5psi?) Y distribuidor HEI. æNecesitarķa algo mįs?

æTambién funcionarķan el AW4 y los medidores (velocidad, tacómetro, temperatura, presión de aceite) si saco el sistema FI? Obviamente, dejarķa los sensores anteriores en el motor. [/ QUOTE]

• hola,tengo el mismo problema con mi zj 95,estoy cansado de los problemas eléctricos pero sigo enamorado de mi Jeep,al igual que tś estoy pensando en instalar un carburador ya que en mi paķs costa rica es difķcil conseguir pcm

Jorge Salazar Mata

Por favor cuando lo logres puedes explicar el procedimiento,yo tengo un distribuidor de un 4.2 de un Amc eagle,pienso que podrķa funcionar

Cruisingram

Arise from the dead oh dead horse beaten thread! LOL- well, here is an interesting take on this debate- I traded into a 1988 XJ "frankenjeep" with a carb. It actually runs pretty decent, gets pretty good mileage, with a real dead spot mid range. I am trying to identify the carb- and then see the mismatched carb to manifold issue I have.I got it, I fixed the poorly installed electric external fuel pump, the totally frozen electric drivers seat with a manual, and replaced the radiator- that was fun because the vehicle is an 88 and had a 94 radiator in it, didn't find that out until trying to fit a 88 radiator back in it. So if I can get a good carb on this with a good fit, I think this vehicle is pretty strong actually- it's a lifted 2 wheel drive 88 Wagoneer. Perfect jungle jeep for my boys here in Hawaii. The mileage is as good as my EFI jeeps FYI. Starts crappy though. Hold it to the floor, turn it oever forevah, and then it starts.

Cruisingram

Observation from someone that has a carb conversion- 1) Mileage clearly did not go down. It is virtually the same on my other 4.0 XJ. 2) The mickey-rigged nature of this carb, it does start wierd. I think once I dial in the carb- that will end. 3) No more computer or sensors once the swap is done- it has the HEI ignition, and all sensors mean nothing now LOL. No codes possible.

ijeeep

Mash it to the floor and crank forever ?
Sounds like your automatic choke isn't working.

From cold it should be step on it once, to hit the acceleration pump and set the high idle cam, then turn the key.