has anyone put a second altenator for welding on a 4.0? I am thinking about installing a welder and need to know what others have done.
:vader2: :beer: :D :smokin: :rasta: :nuke:

I've seen an article where one was put on a 350 but not a 4.0,

if you have room go for it.

I guess I should be more specific. I have a york on it right now and would like to know if someone else has ran into this situation. I would like some ideas before I start fabbing brackets
joe

I'm stuck in the same boat. Where did you end up mounting your York? I haven't actually built all of the brackets yet, they are still on paper until I take some more measurements and figure out how I want to do this.

What I had planned on doing was moving the battery over to the stock air box location and then fabbing an extension bracket off of the AC unit for the second alternator. The combo pulley for the primary alternator would work well for this. I think that a York might just barely fit next to it, but I don't know where you would find a belt that short.

My other thought would be to move the battery as far toward the firewall as possible in the stock air box location (move some junk) and then run it off of the power steering pump's pulley. You would need to weld on an extension to the shaft and then a separate V-belt pulley for it, but you might be able to swing it. Since you would only be using it when welding and the Jeep is stationary, you could even get away with just mounting it to the flat portion of the fender and only hook up the belt when needed. A sturdy backing plate should be all that is really needed on the underside. This looks like the best option for me at this point, but I don't know how I would swing that second pulley on the PS pump. Any thoughts?

What alternator would you be using for this? How far along are you? Share the info man, I'm somewhat stuck too.

Well.... I am not very far along on the project yet. I haven't even got the altenator yet. Kind of waiting to see what someone else has used.
when I mounted my York I had to make custom mounting brackets. It was actually pretty easy. I just used some angle iron and a flat piece of steel.
I have a second pully off of the york that I want to run the altenator off of.
A buddy of mine just built a welder on his flatty using a ford altenator and it works great.
joe

Yes, but where did you end up putting the York and what are you using to run it? That makes a big difference on where you can stick the alternator and how.

I am running the york right off of the crankshaft pulley. I put it almost in the stock location but moved it away from the motor and slanted a little. /-- Kind of like that. where the pump is on the slant and the flat pieces bolt onto the stock bracket.

the york kicks a$$ there and I think I have enough room to put the altenator on the other side next to the PS pump.
joe

Got any pictures? I haven't seen it done that way in a 4.0 before. Do you still have the stock AC unit? What did you use on the crankshaft pulley to add a v-belt pulley for the York? This sounds promising...

This is how I did it on my Y2K TJ 4.0
I hope this helps

http://pub59.ezboard.com/fnewenglandwheelersfrm49.showMessage?topicID=237.t opic

I've built my own welder and air setup. Here is the link to my site with write-ups: members.home.net/t.molnar.

I've mounted the rotary compressor on top of the factory comp. bracket and the second alternator near the stock alt.

on the york locations, brackets, pulleys and belts go to onboardair (http://www.onboardair.com) they have all of this. You can copy there designs.

BlueYJ :cool2:

on the york locations, brackets, pulleys and belts go to onboardair (http://www.onboardair.com) they have all of this. You can copy there designs.

BlueYJ :cool2:

yeah I looked at their stuff. They pretty much suggest that you use the factory mounting location. That would work on my setup. I am using a v-belt not the serpentine. I had to make a custom bracket.

i just got a little 2x2 angle iron and cut it down to about 5"s long then drilled holes in it. i mounted the angle iron on the stock a/c pump platform that has the 4 tapped holes in it. i then placed the york up to it and made little marks as to where i wanted to drill the holes for the york (in the angle iron). so now i still have all the room right above my stock alternater to run another alternater. i am planning on running the ford 100 amp on and it should fit in there nicely.

you just described how I made mine. I cut the angle iron at an angle so that the pump is at an angle. The bad thing about that is I don't have the room there I was hoping for.

Originally posted by joep
I am running the york right off of the crankshaft pulley. I put it almost in the stock location but moved it away from the motor and slanted a little. /-- Kind of like that. where the pump is on the slant and the flat pieces bolt onto the stock bracket.

the york kicks a$$ there and I think I have enough room to put the altenator on the other side next to the PS pump.
joe

How did u adapt your crank pully to handel another belt for your york. I would think comming off a largest pully availalbe (crank, or fan) to a small pully installed on the device (york or welders alternator) would mean you get a higher RPM on the device with a lower RPM of the motor. Thats a good thing especially with a welder.. then u dont have to have such a high engine RPM to do welds.

Originally posted by coachgeo3


How did u adapt your crank pully to handel another belt for your york.

i am running the york off a dual serpentine/v-belt pulley on my stock alternator. when i get my welding alternator i am going to run a v-belt to it off the york since the york has 2 v-grooves. this way the large york pulley will be driving the small welding alternater pulley so it will be nice and fast.

Originally posted by cornjeeper


i am running the york off a dual serpentine/v-belt pulley on my stock alternator. when i get my welding alternator i am going to run a v-belt to it off the york since the york has 2 v-grooves. this way the large york pulley will be driving the small welding alternater pulley so it will be nice and fast.

Joep that I quated above says his is off his crank..... hmmmmm. I like ur idea but I was thinking on welder alternator 1st

upun reread of this I see my new keyboard doesnt make me spell any better

I have AC... how big is that pully compared to Crank etc. Is a pully available for my stock TJ AC that would let me run off it?

what pulley are you talking about. if it is the york dual v-belt pulley then you are out of luck cause the york came with it.

Originally posted by cornjeeper
what pulley are you talking about. if it is the york dual v-belt pulley then you are out of luck cause the york came with it.

hmmmm, does AC compressor have a clutch if not wonder if u could drill and second bolt a pully to the stock pully. (3 bolts) Wait? would the AC have to be turned on to use it's pully?

i am quite sure that all the a/c compressors have a clutch system in them otherwise they would always be pumping air which would need to go somewhere. also it would be a little difficult for you to drill the 3 holes because you have to remember that the pulley HAS to be totally centered otherwise it will screw up your a/c pump or throw the belt off the pulley. my advice would be screw your stock a/c pump and go find a york at a wrecker.

Originally posted by cornjeeper
...... . my advice would be screw your stock a/c pump and go find a york at a wrecker.

Yeah.. the centering I know about.. Im thinking (now thats dangerous) that it is not as difficult as it sounds to center them as u mate them, ifffff both pullys are for same size shaft. All ya got to do is put them on a dummy shaft as you mate them. (mate via welding or bolting.) Bolting I would think would give you a more equal weighting. (same size bolts, washers, etc.) If different size shafts then a shop would have to mill u a dummy shaft which could be out of wood even.

Sorry i didn't get back sooner.
My york is ran off of a pully that is mounted on the water pump. My motor runs a serpentine so I had to have something else. Although, onboardair.com sells a serpentine pulley for the york. I wanted to run a second altenator though. Basically lining up the pulley on the water pump is easy if you do a little research. What you need to find is one that has the same size centering hole. Then when you install it, you can drill new bolt holes to bolt it up to the other pulley with no problems. then you can use the yorks stock pulley with the clutch to shut off when not in use. With the second pulley of the york you could run a second altenator if you can find somewhere to install it. My problem is I am running a 4.0 in my CJ that was intended to run in a yj. Some things are tight. Running the altenator off of the york is no problem cause the pulley is always turning.

I made a mistake in my original post. I am running the york off of the water pump pulley. I am not running the stock fan but an electric one instead.

joe

Originally posted by joep
.........

I made a mistake in my original post. I am running the york off of the water pump pulley. I am not running the stock fan but an electric one instead.

joe

ahhhh big difference.. but ur set up over all sounds good. I'll have to pop my hood now that its back from the shop to eyeball your explanation of how u did it compared to my situation.

Thanx.

It's actually pretty easy to setup. I am thinking about redoing the bracket though so I can add the altenator. One of these days I will have the jeep done.... Yeah right! :D :beer:

Coach,,

Make sure we talk about this on Sunday at Wellsville. cause I am building an on board welder right now.

It will be run off the Brad Kilby serp/v belt pully adaptor.

It will sit next to the AC compressor. But mine is onboard air.
I have to cut up my Air intake but big deal...

Originally posted by BellyUp
Coach,,

Make sure we talk about this on Sunday at Wellsville. cause I am building an on board welder right now.

It will be run off the Brad Kilby serp/v belt pully adaptor.

It will sit next to the AC compressor. But mine is onboard air.
I have to cut up my Air intake but big deal...

Otay