[jrobz23]

What amperage alternator did the B3.3 come with stock? I no longer have any, and I'm debating running a stock setup and a electric vac pump. I may eventually convert to manual brakes (light weight TJ build).

1) Have any of you guys converted to mech everything and used the simple alt?

2) Can any regular off the shelf alts be used on the B3.3 without a custom bracket fab'd up?

3) Does anyone have a spare stock alt from their B3.3?

Thoughts?

 

[95Z28A4]

The alternator that came with my QSB3.3T was a 60 amp single groove with an internal regulator. 120 amp dual groove alternators are also available.

 

[jrobz23]

Is it the same size as a regular GM one wire?

Do you have the part # on your 60?

 

[fte]

You have to remember you don't need a high output alt due to the fact you're not running all that heavy electrical load from the fuel inj ecu etc. The electric vacuum pump draws very little.

 

[jrobz23]

I do plan on running my 12v 8k winch, so the alt will need to recharge the battery if I use it. You're right though, most of the E load will be initial battery recharge from start, head/misc lights (mostly LED) and wipers.

My plan was to run the stock Cummins 60a. Start out with the E vac pump, and work myself off vac entirely. I might even use the fuel pump relay to power it since I won't need that and it's key-on. There will be some serious thought needed in designing the manual braking system, so the e-pump is a cheap and easy get-me-going.

I'd be interested if any of you gentlemen had a stock alt still laying around. PM me if you do.

 

[jrobz23]

The part# off the stock alt would help as well.

 

[95Z28A4]

Denso 12 volt 60 amp

Here's all the numbers from the alternator tag exactly like they are printed on the tag:
60 0 - 8 6 1 - 1 6 1 1
10 12 11 - 2 9 4 1
12V
Made in Japan

For about the same price you can purchase a 70 amp alternator with a vacuum pump from a Isuzu 4BD1T. You can use the vacuum pump to operate the vacuum brakes on your Jeep

http://www.ebay.com/itm/NEW-ALTERNATOR-NPR-CHEVROLET-ISUZU-TRUCK-3-9L-4BD1-Eng-W4-Tiltmaster-1986-1990-/171126017106?hash=item27d7e7cc52:g:peEAAOSwo6lWM5sV&vxp=mtr

 

[jrobz23]

Excellent! Thanks man.

I got one of the vac alts. I might be able to rig it up in time, but wanted a solid backup plan. I do wanna remove all the vac eventually.

 

[DatsunPainter]

Just remember that you need an oil feed and return for the vacuum pump on the alternator.

Sent from my SM-J700P using Tapatalk

 

[jrobz23]

That's exactly the part I'm researching: from where and to where the oil lines are plumbed.

Have a pics on hand?

 

[95Z28A4]

I'm sure you have a reason, but it seems unusual that you want to convert to manual brakes. Having driven 1960's & 1970's cars & trucks as a youngster without power brakes and power steering, I would do whatever it takes to retain those. I prefer manual transmissions to automatics. I can do without all the other amenities, but I must have power steering and power brakes.

 

[jrobz23]

Thanks for the warning about moves to manual chassis components, but none of my CJs have either power assisted brakes or steering, and I don't miss 'em. I kinda see them as yet-another-thing to fail and either leave me stranded (which they have done actually). The goal in the build is to reduce overal components and complexity, so this kinda fits.

The power steering gear was also toast already. lol