GM Alternator for a Willys Flatfender Jeep 

Since I started playing with junk snowblowers to help people that can't afford a new one I've learned a lot about belts, pulleys and how to sling snow from my driveway over the road and onto the roof of my neighbor's house. That being said I'm impressed that after years of watching YT as a retired auto mechanic it's nice seeing someone talk about how belt dimensions affect RPM and using the basic math that seems to not be taught anymore to figure out a solution.

Got to love red jeeps. My first was a 1947 2A, fixed it on a budget in the 80's, had it painted red in Longmont, CO....and a guy from Bestop saw it. Long story short, they used it for their advertising, and I got a free Tiger top. Again, sold it for too little, out in Los Angeles. Fortunately, found an M38, red. Thank you for giving inspiration to get this person off his duff.

Mud holes and alternator testing go hand in hand. It’s science.

I'm passing by to say that I really like the way you deal with problems and create tests, all done in the garage with style and solutions of things actually done in it. Your jeep's are pretty cool e kinda different from here, since they were built (late 50's)here they used 6cil original willys only when Ford bought it did they use a 4cil... Follow w the videos! Congratulations from Brazil.

"As a lifestyle choice" That was good. Quality hording is more than just the art form listed in the dictionary. It takes years of honing a skill that some will never master. Lets make 2022 the year that we stand and honor the practice. Tell your congressman to make February Hording month.........no wait...February gives us less days therefor less space! Space is challenging enough!

Yours is much nicer than the one I did. Mine was on a 1954 with an F-head. I used a ~1980 alternator from a junkyard. The mounts were broken off of the alternator so it was basically free. I made kind of a sandwich mount for it out of black plumbing pipe and 3/16" steel strap and a turnbuckle. It worked great and charged well from ~1980 until we sold the Jeep in about 1993.

James, that bracket is awesome!! I won't call myself a DIY'er anymore. You have a gift of ingenuity..

This channel is an acquired taste. But once hooked, its high brow.

*- Good tutorial, Great teacher, you are, James.* *- I noticed that you used the three jaw pulley and bent that pulley as a theatrical setup.* *- I know and you know that you could have probably applied heat and it might not have bent the pulley...and/or applied penetrating oil and tried that.* *- Hopefully that would have failed so you could show {with a light loading of pull from the three-jaw pulley} use a bolt and hammer to introduce a massive level of force to the corrosion with one hammer's shock-loading blow to break free the seized/frozen pulley from the corrosion on the alternator shaft.* *- But none of THAT was what was being taught ! ! !* *- The teaching was to use something Not designed for the job...a bearing puller that might keep the bent pulley from getting bent to begin with, all with great humor which is why you are a great teacher.* *- And the cunning part is you get away with never making your students wrong with the normal teaching approaches, all of which wind up making people feel dumb.* *- Good theater...! ! !*

I had this problem when I first owned my CJ3B. It was a 6 volt system, and it had a bad generator. I basically did what you did.

Nice, I learned alot about 12vdc power generation! which is coming in handy cause im building a wind generated 12vdc system to power my water pump setup to extract and lift water from a cistern and a pond. Wish I had a CJ2 to tinker with but itll come. Always enjoy your uploads.

I like how you come up with solid solutions to problems with materials you have on hand.

Happy New Year, Low Buck!!!!

Those GM alternators work great! The mechanics at work even put them on our John Deere Gators when the factory charging systems crapped out. Popular replacement on older Goldwings when the stators crap out as well. Happy New Year, all the best in 2022 :)

Hay low buck is back in the new year 👍🇺🇲🇺🇲👍👍🇺🇲🙏

Thanks for the video good start to the year Happy New Year from Scotland

hi there been watching and trying to catching up and ran across this one . ran into this problem in the 70s . things were lots different back then in the ability to get things . i just took the pulley off the Jeep generator and put it on the GM alt. still working now, i think , haven't started that Jeep in maybe 25 years . did think of the low rpm problem ( your smarter ) but it worked so well . i have done it several times and even on a TO20 tractor . good show . here is one for you to try putting a tock A/C compressor on a jeep also works well . have to also make a bracket and find a small bit tank but with the electric clutch went well . i month or 2 ago i started trying to get the old beast running again . i will look for the video i think you can see it in there. found it . you can see the alt ,the compressor and my red neck compressing tester (pointer finger ) take care john

Absolutely love your channel and your work. Keep it up!

Good stuff. I purchased the pre made bracket and had to make adjustments to the “bolt in” application. I suspect My brackets were also different than the sellers bracket on his mock up. My flathead was from a early Willys wagon installed in a M38. A few washers and bushings later and I was all set. Good information on the belt selection. I used the small belt but can definitely see the advantage of switching pulleys. Great video. Changing the hose first certainly avoids an oil soaked alternator. From the frozen south banks of the Underwood Branch, thanks for the fun. 🤠

You made it look pretty easy ! Good test too .

Love that last shot of the willy bumping into the tripod🇦🇺☺

You should put both alternators on it then put a second battery on to power winches and to modernize it with what you can fit in it

Hi , those one wire alternators are great .I used them on every thing . good job , I like the way you do things .

Best diy mechanic channel ever

Good work ! After any job you have to test on it .. ENJOYED

another great video keep up the hard work

Hell yeah more flat fender goodness

good info about the ratios I know mine is running a 1/2" belt and it doesnt charge good at all especially with my crappy battery.

I just discovered your channel and am really enjoying your work on jeeps which I am a non mechanic fan of. I am impressed with your knowledge and problem resolution approaches. I am interested in what is your mechanical/technical background or training. Thanks so much for your videos.

Good choice , I put those GM alternators on everything 👍👍🇺🇸

I had a similar repair on a Farmall M, converting to 12 volt. A GM Delco alternator from a diesel (New Holland TR) combine, it fit with a couple flat washers for shims!

I am surprised that the 6V ignition coil wasn't fried when you are road testing the Jeep. With a lathe around and your ingenuity I am also surprised that you did widen the narrow pulley by cutting the outside flange with a hole saw and weld it back to the width that you needed. Happy New Year.

Happy New Year! Nice solve turning those pedal scraps into the alternator mount. Maybe you could do a second part for us electrically challenged explaining exactly how the wiring works to do a conversion like this.

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I'm thinking, side valved engines have some advantages, and some disadvantages, on the plus side they are simple, and have love mass valve system, disadvantages are love compression, and bad airflow, but both can be eliminated by a turbo. So I think they should be perfect subjects for turbocharging. Supercharging is not super because it uses most of the extra power thus putting more strain on the engine.

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When he said: "Chevy alternator" he really meant: "GM alternator."

where did you get the aluminum radiator from and any part number?

Man, you had some issues with your audio. Otherwise, another great video!

Is the first 3:49 in mono soundwise?

Why is this video only in my left ear ?

Looks awful wet for a place that never rains. Hahahahaaa.

Ok, where did u get the small pulley?

Please show us the washing off of mud next time?

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