swapping a 2.9 with a 2.9 questions

[meatshieldchris]

So I'm taking a badly worn out 2.9 out and replacing it with another 2.9 that has half the kms on it. I've got both motor mounts loose, the transmission is disconnected and slid back, removed the alternator, labeled EVERYTHING, but now I need to make a decision about the A/C compressor.

Do I remove it with the engine, disconnecting the lines and loosing the A/C charge, and remove it when it's out of the vehicle? Or do I remove the compressor and try to tie it out of the way somehow? I started trying the latter, but I'm having a real hard time getting the little bolt off of the back of the intake that's holding one AC hose there.

On a similar line is the power steering pump. On my dad's F150 we removed the pump, but that's a whole lot larger of an engine compartment, we had plenty of space to do it. I;m less concerned about this one as power steering fluid is a while lot less expensive than an A/C recharge kit. I'd rather transfer the whole bracket over to the new motor anyway, rather than renting a power steering pump pulley puller.

I'm guessing removing the radiator is easier than removing the fan?

Any thoughts?

 

[low_five]

remove the radiator. you dont want to risk damaging it. the fan is pretty hard to take off too. Ive never done a 2.9 with airconditioning, because im in alaska, but I would try to leave it hooked up. when I pull a 2.9 I leave the power steering with the vehicle, it will lay right to the side and be no problem at all.

 

[meatshieldchris]

cool thanks. do you pull the pulley off, or take the bracket off instead?

 

[low_five]

nah, I just removed the whole bracket and laid it to the side. easy as pie.

 

[meatshieldchris]

anyone know if the 2.9 from the bronco II and the Ranger share the same oil pan?

 

[Psychopete]

nah, I just removed the whole bracket and laid it to the side. easy as pie.

I did this as well. And also removed the fuel rail since I didn't have a quick disconnect tool for the fuel lines. And it was a good thing I didn't try to go that route because I ended up breaking the springlok when I did have the tool during my V8 swap.

anyone know if the 2.9 from the bronco II and the Ranger share the same oil pan?

Yes.

Pete

 

[meatshieldchris]

I did this as well. And also removed the fuel rail since I didn't have a quick disconnect tool for the fuel lines. And it was a good thing I didn't try to go that route because I ended up breaking the springlok when I did have the tool during my V8 swap.



Yes.

Pete

I lucked out. Either the '92's came with nice braided hoses with nuts, or someone converted it. Two different sized flare nut wrenches, and they came right off.

Re: pan: awesome, thanks.

 

[Psychopete]

I lucked out. Either the '92's came with nice braided hoses with nuts, or someone converted it. Two different sized flare nut wrenches, and they came right off.

I think they came like that later on. My '88 was quick-disconnect from the regulator and to the inlet of the fuel rail. What a PITA those fittings are.

 

[meatshieldchris]

woo! looks like I'm swapping the fuel rail, the repalcement motor has the snap-lock connectors and I need the threaded ones. So how do I get the fuel rail off? Do I need to remove the upper intake?

 

[Spitfire1975]

yes. Intake has to come off. Then there are 4 small bolts holding it on. Other then that, just gently pull the rail off. It will be easier if you disconnect the injectors and pull the whole thing (rail and injectors) as one piece.

There may be a way to do it with the air intake on, but what a PITA. The intake has 6 bolts and comes right off. It's easier to have it out of the way.

 

[Spitfire1975]

I have done this swap. I removed the AC. I figured I would rather spend the money on new refrigerant then risk damaging expensive AC components. And despite all the "warnings" and hooplah about AC charging troubles, it really isn't that big of a deal.

Legally.....You need to "capture" the escaping refrigerant. You should, when putting it back together, Vacuum the system before recharging. I never did. Haven't had any problems other than my weird after market pressure switch needing to be replaced.

 

[Spitfire1975]

Which power steering pump is in better shape? I would think that the pump with new engine would be newer than yours. I would swap the pump and anything else that can be updated while you are doing all that work. INCLUDING the internal clutch system (flywheel, slave cylinder, pressure plate, friction disc) if it is a manual. It would suck balls to put it all back together and 500 miles down the road you are pulling it apart because the slave went bad.

 

[meatshieldchris]

Which power steering pump is in better shape? I would think that the pump with new engine would be newer than yours. I would swap the pump and anything else that can be updated while you are doing all that work. INCLUDING the internal clutch system (flywheel, slave cylinder, pressure plate, friction disc) if it is a manual. It would suck balls to put it all back together and 500 miles down the road you are pulling it apart because the slave went bad.

Yeah the motor came without the accessories (power steering, AC, alternator) so I've gotta switch all my stuff anyway. There's a brand new clutch/flywheel/slave on the old motor (I got 10 miles out of it before I realized the thrust gearing in the motor was way past gone and the rings are toast and it kept pushing the rear main seal out).

Is there a way to leave the injectors in place? I'd rather not mess with those o-rings at the bottom. Had enough trouble finding a clutch disconnect o-ring.

 

[meatshieldchris]

yes. Intake has to come off. Then there are 4 small bolts holding it on. Other then that, just gently pull the rail off. It will be easier if you disconnect the injectors and pull the whole thing (rail and injectors) as one piece.

There may be a way to do it with the air intake on, but what a PITA. The intake has 6 bolts and comes right off. It's easier to have it out of the way.

Does coolant flow through the upper intake at all?

 

[Spitfire1975]

Does coolant flow through the upper intake at all?

No it Doesn't.