Replacing 2F smog pump with 3FE Alternator

[D'Animal]

I installed a 1984 2F from an FJ60 into my FJ45 Extended Cab. I did not need the smog pump and I did not have the Smog Pump Eliminator set up. I had now way to run my belts side the all the pulleys lined up with the front pully on the cranshaft.

So here is how I installed a 3FE alternator in its place.

 

[D'Animal]

In order to use the rear cranksaft and water pump pulley you will first you need to find a FJ62 driverside motor mount.
It will place the pulley closest to the alternator 7 1/4" from the top bolt on the engine mount. That is exactly what you want.

It is the one on the left in the picture below.

Swaping a motor mount is pretty easy to do with a 17mm short socket and ratchet and a floorjack.

 

[D'Animal]

Next just install the 3FE alternator. You will notice it hits on the Power Steering Pump Bracket below the mounting bolts on the back of the bracket. It also does not line up exactly as it should.

As seen below.

 

[D'Animal]

You will make the Arc of the Alternator on the back of the bracket.

Then remove you power steering pump and pump bracket. You can lay the pump off to the side with out disconnecting the lines.

The bottom bracket below highlighted in Yellow is how the bracket will be modified. The top bracket is the same bracket with the hardware still installed and is there jut as a visual reference.

 

[D'Animal]

I used my bandsaw to cut the Arc.

Bandsaws do not cut a tight arc very well so I made a series of relief cuts first and then cut the arc.

I finished the arch with a 4" grinder with an 80 grit sanding disc on it.

 

[D'Animal]

You will take your smog pump belt tensioning bracket and begin to modify it.

You will want to cut it by continuing the curve of the slot as shown here.




You will actually cut it all the way off. It is still attached for photo purposes only.

 

[D'Animal]

Once the cut is made you need to round the end of the bracket off. Clean the metal up so you can weld it as well.

 

[D'Animal]

Bolt everything in place and make sure the Alternator will swing under the power steering pump bracket and make sure the Alternator fan will swing by the tensioning bracket.

Make sure it all works during full movement of the alternator belt tensioning.

 

[D'Animal]

Put a little spot weld to hold it in place once you get everything they way you want it.


Double Check the movement of the alternator.

 

[D'Animal]

Remove the belt tensioning bracket and weld it up.

 

[D'Animal]

Re-install everything and double check your alternator fan movement. If everything is spinning you are good to go!

You can now run the wiring from the factory alternator or wire them together. One one will work at a time unless there is a demand.

 

[D'Animal]

Finished Look.

Depending on what fan shroud you are running. You may need to modify it for the dual pulleys. Or jsut put a single pulley on it and not worry about modifying the shroud.

 

[Cruiserdrew]

That is awesome. So we can run dual alts, just like the South AMerican guys. Nicely done.

 

[D'Animal]

That is awesome. So we can run dual alts, just like the South AMerican guys. Nicely done.

Thanks

I will get belt part numbers when the atuo parts store opens back up.

 

[FJROME]

Good job Dan, I,m glad that hammer to the face didn't mess up your fab skills.

 

[slickrock]

So can you figure out how to run two alternaotrs off a F or 2F engine with power steering?

Is your second alt for welding or charging?

 

[D'Animal]

So can you figure out how to run two alternaotrs off a F or 2F engine with power steering?

Is your second alt for welding or charging?

You can run two alternators off of a F or 2F with power steering.

Only one alternator will be used until a large enough demand is made for the second one to kick in.

 

[D'Animal]

It worked great, but I was not happy with it.

I wasn't happy with running two alternators with about the same output as one GM alternator so I redid it using a GM style 1 wire alternator that is 100amp.

I reinstalled the original motor mount arm and removed the fabbed braket but left the modified pump braket.

I used an old "F" lower braket and cut it to fit the GM style alternator.

I removed the fabbed part of the bracket. Below is pictured the before and after.

 

[D'Animal]

Here is the modified "F" bracket installed with the alternator.

 

[D'Animal]

I used the outside bolt hole on the power steering bracket to mount the bolt through the slot.

The tensioner bolt runs through the same slot, just further down. The additional length of the slot pictured above is so you can move the bracket in a way that does not interfere with the fan of the alternator.

The tensioner bolt is cocked a bit but it is used for tensioning the belt only so I am not too concerned about it.

I reused the Toyota Pulley so I could use the proper wide belt.