fuel injected v carb

[reptile610]

so what everyone is telling me is that i wont want to keep a carb engine for offroading because if you put it on any type of angle it will stall out. is this true? i really dont wanna do all the conversions needed to have a fuel injected engine run properly.

 

[CJim7]

There are very few carbs that offer good off-camber performance. And the ones that do are still marginal compared to fuel injection.
That's not to say you cant have "good" offroad performance with a carb...the MC2100/2150 offers very good operation at off camber positions. I've used Quadrajets with great success, and if you tune a Weber up, you can achieve pretty good results.
Edelbrock offers kits to make their carbs more offroad friendly and there is also the holley offroad carbs.

Another option...kind of the middle of the road...is propane. The kits are stupid simple and there are no electronics to worry about. The downside is tank storage takes up where the rear seat goes. So if you can live without the backseat drivers....propane is a great choice.

I've been running propane for about a year now and i would never go back to a carb. Matter of fact, I would never fuel inject either....I pay $2.20 a gallon for propane and it does everything FI does

 

[reptile610]

There are very few carbs that offer good off-camber performance. And the ones that do are still marginal compared to fuel injection.
That's not to say you cant have "good" offroad performance with a carb...the MC2100/2150 offers very good operation at off camber positions. I've used Quadrajets with great success, and if you tune a Weber up, you can achieve pretty good results.
Edelbrock offers kits to make their carbs more offroad friendly and there is also the holley offroad carbs.

Another option...kind of the middle of the road...is propane. The kits are stupid simple and there are no electronics to worry about. The downside is tank storage takes up where the rear seat goes. So if you can live without the backseat drivers....propane is a great choice.

I've been running propane for about a year now and i would never go back to a carb. Matter of fact, I would never fuel inject either....I pay $2.20 a gallon for propane and it does everything FI does

i want to be able to drive this everyday so idk if that'd work out for me.

 

[CJim7]

i want to be able to drive this everyday so idk if that'd work out for me.

I feel perfectly comfortable driving mine every day....the secret is knowing where to fill propane tanks
I believe the carb on your GM 151 is a Rochester....all though I could be wrong.
I suggest you just take it out and play with it. Some tuning can help things immensly offroad. Just takes some playing around.
Try that first before you jump the gun

 

[reptile610]

I feel perfectly comfortable driving mine every day....the secret is knowing where to fill propane tanks
I believe the carb on your GM 151 is a Rochester....all though I could be wrong.
I suggest you just take it out and play with it. Some tuning can help things immensly offroad. Just takes some playing around.
Try that first before you jump the gun

what about putting on a weber?

 

[Kane]

I wheeled my CJ5 all over utah with the pre computer carter that evryone hates. I never had an issue with mine but i was very good at tuning it and it needed frequent cleaning. That being said it did very well for being a carb. The carter got its bad rep when they put on that stupid stepper motor. I also found an old holley that was s tock replacement carb for a late 70's gm truck. It was even better than my carter.

 

[RubberDuck]

TBI fuel injection can offer its own set of headaches, but it all depends on what kind of offroading you're going to do. FI will give you quick starts in the winter which is a nice plus, but you do have to dial it in and often times keep tweaking it for various conditions. Most people I know are still running carbs and they do fine in all but the most demanding inclines. Even then I've climbed up some steep hills in friends vehicles that are carbed with no issues.

 

[Old Dog]

I'm running a chevy (Howell) tbi set-up and will never go back to a carb. There is a nite and day difference off road. It's worth every penny.

 

[CJim7]

Hmmm....anybody remember 'mega squirt'? Home built closed loop FI that doesnt require the computer

 

[Sasquach]

I'm running a chevy (Howell) tbi set-up and will never go back to a carb. There is a nite and day difference off road. It's worth every penny.

I'm with you Old Dog , It is day and night difference.

 

[CJim7]

I'm with you Old Dog , It is day and night difference.

Those of us who have gotten away from carbs often wonder why we ever put up with them as long as we did

I love being verticle, pushed back in the seat of my CJ, and the engine still ideling like it's on flat ground.

 

[Sasquach]

Those of us who have gotten away from carbs often wonder why we ever put up with them as long as we did

I love being verticle, pushed back in the seat of my CJ, and the engine still ideling like it's on flat ground.

I wheeled with an old timer last year that had progressed to a built TJ and he asked me about my CJ and when I mentioned it had MPI and ran so well he agreed that fuel injection was a game changer BUT you need to remember to turn the key OFF if you roll because it will keep running untill it oil starves!
I told him I was not planning on rolling today, he say's no one plans on it.

 

[81laredo]

TBI EFI with HEI and I agree with these guys, it is well worth the cost! Starts and runs great at Sea Level or at 6,500' and at 12 Degrees to 112 Degrees (so far).

 

[reptile610]

currently i have the iron duke and with only 73hp i don't see spending much money on this engine but would like to upgrade to an amc v8 so if i do i might do it then. now do you guys actually have it set up to where you can read codes and everything else like factory? or is it just computer, o2 sensors, and just hope it's running fine based on sound.

 

[Old Dog]

now do you guys actually have it set up to where you can read codes and everything else like factory? or is it just computer, o2 sensors, and just hope it's running fine based on sound.

The Howell uses the chevy tbi so you wire-up a check engine light to throw codes. It's an obd 1 system.

 

[reptile610]

The Howell uses the chevy tbi so you wire-up a check engine light to throw codes. It's an obd 1 system.

ok that was my major concern about switching