BroncoII4x4.com

Okay, here is the question. I have an '89 Bronco II 4x4 with the 2.9L V6 that I am using on my deer lease. The motor is tired and burns oil, smokes. Just curious about a motor swap. Is there a 4 banger that will drop into the engine bay that will mount to the transmission and bell housing with no adapters.........trying to figure the cheapest way to go. Bottom line, is it cheaper to rebuild what I have or build a 4 cylinder and drop it in the Bii?

Help

just fine another 2.9. out with the bad,in with the good. done

I agree with Dave, the 2.9 is near bullet proof, making it the ideal small SUV engine.
If you either rebuild or replace with another 2.9, you will avoid some problems associated with
swapping, going to a 4 cylinder will require another bell housing at a minimum, and probably
the complete transmission, you will also need another ECM, corresponding wiring harness
and exhaust. I am sure there will be other issues that I don't know of.
The B2 did not come stock with a 4 cylinder, most of us think the lack of HP and torque being the reason for that.

Ray

find a ranger with the 4cyl and get everything from that.if thats what ya wanna do

Thanks for th feedback, how hard would it be to build without the fuel injection.........go carb?

BillBr wrote:Thanks for th feedback, how hard would it be to build without the fuel injection.........go carb?

Well first off you need an Intake for a carburetor. Where you gonna find one?
You may need a different distributor.
You will need to modify the computer because it does electronic shifting and such.
Why go backwards in technology? Fuel injection is more precise less hassle with jets and such. It will run the same in your vehicle when you are out in the boonies if you are on your side or nose or roof. No float to flood the carburetor. Oh don't forget altitude compensation. When your in the hills at 6000 or 7000 feet you rig idles just fine and won't foul your plugs with excess fuel. Look over at the guy that is running a Holley and when his rig is crappin out because of altitude. Smile and wave as you idle right on by..

Stick with the FI.