Gary Lewis Posted March 17, 2019 Share Posted March 17, 2019 Jim - I missed that he had the small case but 130a alternator. And, I'll ask him for some pics. ... He is using the large case -2 hole, 130A- but the narrower 7" C-C mounting ears. Mounting distance and case diameter are independent of each other. Ok, got it. I think. Link to comment Share on other sites More sharing options...
Bruno2 Posted March 18, 2019 Author Share Posted March 18, 2019 Ok, got it. I think. So we got the 3G swap underway today. A lot of stuff needed to be cleared out. Adios junk harness! So long 2G. You will make an excellent core for Jr's 3G swap Here is the new organ. Some clearance made. A little more clearance. Adapting the 91 green wire plug to the Expedition harness. She is in! The top bolt needs to be replaced by a 3/8" x 2" bolt with a lock washer and nylon locking nut because there is no threaded hole any longer. The mega fuse was adapted to the stiff arm on the batrery tray. This is at least 3 more volts than what he was seeing on the volt meter. Link to comment Share on other sites More sharing options...
Bruno2 Posted March 18, 2019 Author Share Posted March 18, 2019 Ok, got it. I think. My son Kris, was not wanting to roll the dice this week by hoping the 2G remained reliable. We did a harmonic balancer last week on his truck. He left the key on for a couple of days and it completely drained his battery. The 2G like to never got the charge back up. When it finally did the 2G was barely putting out 13 volts. So we decided to do it today with limited time. A couple of things need to be changed. The wiring is a mess in my opinion. Also, the 3G is clocked wrong. I didn't do enough research on how to re clock it so we left it alone for now. The job took about 2-1/2 hours. I think that was long , but we made several adjustments. Not knowing how much extra clearance was needed made for 3 or 4 attempts at it. We mounted the mega fuse only to find out the clocking wouldnt allow for it. Then we had to move the mega fuse from the fender to the battery tray strut. This is why I wanted to wait. However, I can understand why he didn't. So maybe next weekend I will add to this thread by doing the clockwork. We need to do an exhaust manifold while we are at it. Cheers! Link to comment Share on other sites More sharing options...
Bruno2 Posted March 18, 2019 Author Share Posted March 18, 2019 Jim - I missed that he had the small case but 130a alternator. Thanks. And, I'll ask him for some pics. Steve - Thanks. Gary, mine has the 2 cooling holes so it is the large case 3G with 7" spacing. I didnt know this until Jim posted the pic. Link to comment Share on other sites More sharing options...
Bruno2 Posted March 18, 2019 Author Share Posted March 18, 2019 Gary, mine has the 2 cooling holes so it is the large case 3G with 7" spacing. I didnt know this until Jim posted the pic. I also thought it was just 95 amp unit. I looked the specs up on the parts and it does say this is 130 amp unit. I almost put a 100 a mp mega fuse in it lol. So the output went from the 80 amp 2G to a 130 amp 3G. Link to comment Share on other sites More sharing options...
Gary Lewis Posted March 18, 2019 Share Posted March 18, 2019 I also thought it was just 95 amp unit. I looked the specs up on the parts and it does say this is 130 amp unit. I almost put a 100 a mp mega fuse in it lol. So the output went from the 80 amp 2G to a 130 amp 3G. Brandon - You and Kris did well. On the clocking, Steve has a how-to toward the bottom of this page: https://www.supermotors.net/registry/media/1079023 Link to comment Share on other sites More sharing options...
Bruno2 Posted March 18, 2019 Author Share Posted March 18, 2019 Brandon - You and Kris did well. On the clocking, Steve has a how-to toward the bottom of this page: https://www.supermotors.net/registry/media/1079023 That doesn't sound too difficult. Link to comment Share on other sites More sharing options...
Gary Lewis Posted March 18, 2019 Share Posted March 18, 2019 That doesn't sound too difficult. Nope. I was able to do it, so I'm sure you can. Link to comment Share on other sites More sharing options...
Steve83 Posted March 18, 2019 Share Posted March 18, 2019 Adios junk harness!There's actually nothing wrong with that harness - just the bigger connector. But it can be fixed by cutting that connector off, splicing the Wh/Bk wire to a pigtail for a 3G, and putting the other 2 wires into a ring terminal. https://supermotors.net/getfile/910523/thumbnail/altwiring2g3g.jpg...with a lock washer and nylon locking nut...You're one of those belt-and-suspenders guys, huh? ...there is no threaded hole any longer.But it's pretty easy to drill out the alternator slightly & tap it for a larger bolt. https://supermotors.net/getfile/565801/thumbnail/alt06thread.jpgThis is at least 3 more volts than what he was seeing on the volt meter.Did you check it before or after with a digital multimeter?...completely drained his battery. The 2G like to never got the charge back up. When it finally did the 2G was barely putting out 13 volts.Not surprising - alternators are NOT designed to charge dead batteries, and trying to do so usually ruins them; even a 3G. Always CHARGE a battery, or jumper it to a charged battery with a working alternator. Don't make the alternator on the dead vehicle do all the work.We need to do an exhaust manifold...The captions in this album may interest you, and save you some time & effort: https://supermotors.net/getfile/770511/thumbnail/12greaseman.jpg Link to comment Share on other sites More sharing options...
Recommended Posts