1985 2.8l 2150 carb convert to 2100

[EG_LeadFoot]

Hey y’all I’m trying to figure out how to install a 2100 on my 2.8l. My uncle swears it’s possible but I’m new to carbs and the setup between the two of them are different. Could anyone help me please?

 

[franklin2]

The 2100 carb will bolt right on correct? But have you converted the distributor over yet?

 

[EG_LeadFoot]

I haven’t done anything besides remove the 2150. The 2100 fits but the setup looks different. The hoses and all.

 

[rusty ol ranger]

The 2150 is just an emission friendly 2100.

The 2150 on your 2.8 is feedback which is why its so different.

A 2100 will bolt on and function in place of a 2150 (pre feedback), but really the 2150 is better in terms of general driveabilty.

 

[franklin2]

I haven’t done anything besides remove the 2150. The 2100 fits but the setup looks different. The hoses and all.

You can't just pull the carb off and put another regular one on. Like was mentioned, the original carb was a feedback carb. What this means is it had a fuel solenoid, a throttle position sensor, and a idle control motor that was all controlled by a computer, just like a fuel injection computer. The computer also controls the timing in the distributor. There are no mechanical advance weights and no vacuum advance on the original distributor.

So if you start changing things, the computer gets lost and can go into limp mode. Your timing will be locked at 10 degrees BTDC. You can do swap, and the engine will run much better, and you can get rid of most of those hoses and wires and all that stuff mounted on the pass inner fender. BUT, you need to get a older type distributor from a mustang II or pinto from the late 70's with the 2.8 v6. Once you get the distributor, you will also need to get a ignition module, either a original type duraspark II module, or a GM HEI module. I used the GM HEI module, it was cheaper, and I could use the original square coil.

Your engine will run much better after you do all this swap, mine does.

 

[EG_LeadFoot]

My wife’s uncle had me buy a 2100 to replace my 2150 because it was messed up. I’m not trying to spend a lot on it and I need it fixed ASAP because it’s my daily and I’m stuck with a rental car.

 

[rusty ol ranger]

My wife’s uncle had me buy a 2100 to replace my 2150 because it was messed up. I’m not trying to spend a lot on it and I need it fixed ASAP because it’s my daily and I’m stuck with a rental car.

If its a DD your best option is to rebuild your factory carb.

I dont know about the feedback 2150s but the regular 2150s cost about 30 bucks and an hr to rebuild, 2 if youre a novice.

They truely are dirt simple.

 

[EG_LeadFoot]

If its a DD your best option is to rebuild your factory carb.

I dont know about the feedback 2150s but the regular 2150s cost about 30 bucks and an hr to rebuild, 2 if youre a novice.

They truely are dirt simple.

How do I tell the difference

 

[rusty ol ranger]

How do I tell the difference

All ranger 2.8s had a feedback carburator.

 

[EG_LeadFoot]

So I wasted money on a 2100? Unless I switch to duraspark system?

 

[franklin2]

So I wasted money on a 2100? Unless I switch to duraspark system?

Short answer, yes.

The original 2150 will have wires going to it. Your other carb doesn't except maybe a wire for the choke.

You could stick the 2100 on there. It would run. Not have much power and fuel mileage would not be very good, but it would get you there. Till you saved up for a duraspark distributor. Your timing would be locked a 10 degrees BTDC (or whatever it's set at static with the timing light)

What started all this carb swapping? I hate to tell you, but the computer system on these things is rather complex, and when one little thing goes wrong it messes the whole thing up.

 

[EG_LeadFoot]

My wife’s uncle said it was messed up and that a 2100 would be better because of less wiring. I also have a 88 ranger with the 2.0. Isn’t that a durapsark?

 

[rusty ol ranger]

My wife’s uncle said it was messed up and that a 2100 would be better because of less wiring. I also have a 88 ranger with the 2.0. Isn’t that a durapsark?

Im not sure, but even if it is you cant pull 4 cylinder duraspark parts and use them on a 6 cylinder.

What was your original problem that made you think it needed a new carb?

 

[EG_LeadFoot]

The butterfly was staying wide open all the time. I believe the connectors to the choke was missing a piece.

 

[rusty ol ranger]

So the choke wasnt working?

Thats it?

Im not sure on a feedback 2150 if the choke is linked to the ECM in anyway...but a 20 dollar choke cable kit probably would of fixed it.