has anyone done this? my buddy rolled his taco and he's offering me free reign at whatever parts i want. i'm going to do a 3.4 swap, and having a/c would be the icing on the cake.

what parts do i need to grab from him? does it tie into the 89-95 pickup hvac stuff easily? is it just a dumb idea?

thanks for any advice,

isaac

 

The 3.4 parts list is on the ORS website.

 

thanks wabbit.. the only mention of the a/c on the ORS list is the a/c compressor. what about the condenser?

maybe i'm not looking in the right place?

 

I'll be watching this thread to see what turns up... but this is what I know, or think I know.

The 3.4 and 3.0 compressors are very similiar.

The 3.0 systems mostly run R12, the 3.4 systems run R134.

Evidently, the top plates on both compressors are exchangeable. Meaning... you can swap the line fittings onto your 3.4 compressor or vice versa.

Since the 3.0 compressor fits on the 3.4 block, you can retain your 3.0 system if you wish by simply swapping the compressors. I have heard you don't even have to disconnect any line or recharge the system to acheive this.

There is something different about the 3.0 and 3.4 "AC circuit boards". I don't know what they are or what the exact difference is though... nor what the work around is. Maybe Fallguy will chime in. I believe he has done some of this AC work.

My 4Runner had factory air, but I broke a line sometime before the swap. My thought is to upgrade the system to R134 and use the 3.4 compressor since R134 seems to be easier to get a hold of. But I know some internal O-Rings from R12 systems can leak prematurely or will need to be swapped out.

Don't know if all this helped much... but maybe this thread will go somewhere that will let us all figure out what needs to be done.

 

i probably should add my truck has no a/c at all right now - so the options are use the system in its entirety from the taco, or get myself a junkyard system out of my generation truck.

 

Thats gonna make it a bit more complicated.

Seems to me your best bet would be an entire system from a similar year vehicle. That way everything is going to fit and route like the factory setup.

Since the compressors are in the same place, you should be good to go. Seeing you'll be using the R134 compressor from the 3.4, it would be a good time to upgrade all the O-Rings and related internals for the different juice.

 

yeah, damn, seemed too good to be true. i'll see what i can find in the local wreckers - a quick look on car-part looks like it'll be expensive, though.

oh well, i'll just roll down the windows and go really fast. haha yeah 3.4 power!

 

Basically, the only part from the Taco that you can use (that will bolt on, with no modification), is the compressor. You'll need parts that will fit your body style (3rd gen truck, 2nd gen Runner).

I used the compressor from the Taco, with condenser, drier, and plumbing from a '95 Runner, and an evaporator and duct from a '91 truck. I had to have the fittings custom done between the truck evap fittings to the Runner plumbing. I used the fittings from the Runner evap to modify the truck evap fittings. And, yes, truck and Runner evaps and the ducts they sit in are different. I also had to modify my sheet metal cross brace (in front of the radiator) to accept the Runner condenser.

I did all this, and got the system charged up with R-134, and it will nearly freeze me out of the cab!

If I had it to do over, I would try to find a '94 or '95 truck (that had had R-134 in it, already), that still had an intact A/C system on it, and strip it out to use on my truck.

 

Timely post, as my 4Runner has no A/C, so when I picked up the 3.4, I made sure it had a compressor. I also bought a switch off eBay!

Now all I need are the condensor, drier, evaporator, and A/C amplifier. And hoses...

So, should be easy to do!

Hahahaha...

 

RobD, if you can find a '94 or '95 Runner with those parts, it should be a pretty easy install for you, and everything will be R-134 compatible.

 

I found a guy locally selling the system off a 92, but presumably that's no good since it's still r12. Are the conversion kits any good or should I just stick to r134a?

 

You could use that system, and just swap the drive pulley to the 3.4 set up, but I'm not sure about the efficiency of a 134 conversion, and R-12 is WAY pricey to get ahold of, these days.

 

just realized the 92 gear is out of a 2-door 4runner, which as you say has a different evaporator, so it likely won't work. the hunt continues...

 

I found the evap from a 95, I think. Going to swing by today and see if it's still there. Then it's only a few more parts...