HOGIE Posted June 7, 2016 Author Report Share Posted June 7, 2016 Thanks DanielC. I'll have to digest this for a bit and won't be able to get to troubleshooting until later but will post updates when I have them. 2 Quote Link to comment
HOGIE Posted June 9, 2016 Author Report Share Posted June 9, 2016 Put my alternator out of 620 in truck. With new battery. Starting voltage of battery was 12.7 When running voltage across battery was 13.7 and 13.30 with the brights All this time the engine is fluttering and stumbling while idling. Then the alternator let the smoke out Started it again quickly check if it was charging, voltage was 12.5.... Nope I'm fucked 1 Quote Link to comment
Draker Posted June 9, 2016 Report Share Posted June 9, 2016 Find an IR alt? Or see what al has on the shelf. Seems weird your good alt fried though.. ?? 1 Quote Link to comment
HOGIE Posted June 9, 2016 Author Report Share Posted June 9, 2016 It was. 70amp for a 200sx. I think the problem is the wiring. Not the fried alt. that's just my consultation prize 1 Quote Link to comment
flatcat19 Posted June 9, 2016 Report Share Posted June 9, 2016 Did you jump the VR when you put IR alt in? 1 Quote Link to comment
HOGIE Posted June 9, 2016 Author Report Share Posted June 9, 2016 Did you jump the VR when you put IR alt in? Did not. Didn't know I needed to. I have two Datsun pickups and I'm taking the bus to work today, does that justify a fml thread? 2 Quote Link to comment
Draker Posted June 9, 2016 Report Share Posted June 9, 2016 I have two Datsun pickups and I'm taking the bus to work today, does that justify a fml thread? 4 Quote Link to comment
banzai510(hainz) Posted June 9, 2016 Report Share Posted June 9, 2016 a 79 620 is a internal reg alternator anyway so putting a new IR alt should not change need to change the wiring. I think a 70amper would not fit in there to good as has little adjustment then hit the idler arm. or is this a external volt reg 521 then yes needs the jumper wires installed but going by the voltages you describes sound like it was working normal re reading your thread what you did, I would have just bought another stock 35amp for the 521 now possible you have to broke vehicles. 521s are external volt reg 620s dont have a external volt reg as its inside the alternator California datsun(datsun LLC) i think make a connector that has the jumpers so its idiot proof conversion for the plug one can use a broken old volt reg connector and jumper the wires also then plug into the harness. But no need to break a good external volt reg for this 2 Quote Link to comment
hobospyder Posted June 9, 2016 Report Share Posted June 9, 2016 Early 629s have the externally regulated alternator hainz. I dint know about later 620's but I know the 73 is external 2 Quote Link to comment
Draker Posted June 9, 2016 Report Share Posted June 9, 2016 If you follow the 510 IR swap diagram, it should get you to where you need to be. Well, other than the new alt part. Hit pick a part on 99 and snag a KA alt. 2 Quote Link to comment
Draker Posted June 9, 2016 Report Share Posted June 9, 2016 Or, just get your battery charged up and limp it out to camp. :) If you want to run out to JC, I'll be home around 6 working on last minute shit. We can dive in and see what's doin, or not doin. Of course, you'll need that battery charged up. 1 Quote Link to comment
banzai510(hainz) Posted June 9, 2016 Report Share Posted June 9, 2016 hobo he listed a 79 620 so I assume IR type yes early 620s are external also 1 Quote Link to comment
hobospyder Posted June 9, 2016 Report Share Posted June 9, 2016 hobo he listed a 79 620 so I assume IR type yes early 620s are external also I only see screen names, on my phone 1 Quote Link to comment
HOGIE Posted June 9, 2016 Author Report Share Posted June 9, 2016 70amp alt was a tight fit, didn't think that any wiring was needed with the IR. IR was charging just fine but engine was stumbling. Weird because it ran fine with old batt that didn't hold a charge and alternator that didn't put out enough current to charge batt. Well until the voltage dropped below 12volts. Thinking about it now, I was testing the voltage with the lights. First runners, then brights and that was when the alt let out it's smoke. Why would it run rough that has to do with alt and batt when there is plenty of juice? Could something be pulling power away from the coil? Just bought a ext reg alt listed for 74 620, they didn't have one listed for 521, old batt that wouldn't hold a charge was turned in as a core for new one, next is go through wiring and look for shorts. 1 Quote Link to comment
HOGIE Posted June 9, 2016 Author Report Share Posted June 9, 2016 Some of the people on the bus definitely smelled like that guy 3 Quote Link to comment
KoHeartsGPA Posted June 9, 2016 Report Share Posted June 9, 2016 Call H5wagon (Mike) he might have one or two alternators sitting around... 1 Quote Link to comment
Draker Posted June 9, 2016 Report Share Posted June 9, 2016 With the IR alt, you just need to jumper a few wires. 2 Quote Link to comment
KoHeartsGPA Posted June 9, 2016 Report Share Posted June 9, 2016 I found an old alternator in my stash, might be IR and you're welcome to try and see if it works, HOGIE... 541-543-4356 Call me if you want to try it out, I'll take it to your house when you get off work... 2 Quote Link to comment
KoHeartsGPA Posted June 9, 2016 Report Share Posted June 9, 2016 Hey...found another one, this one smaller....I know nothing of them, they came with my datto 11 years ago and I had forgotten I have them... I feel like I'm on a treasure hunt as I find really cool stuff I didn't remember I had....metal Datsun emblems included :thumbup: 1 Quote Link to comment
flatcat19 Posted June 9, 2016 Report Share Posted June 9, 2016 I found an old alternator in my stash, might be IR and you're welcome to try and see if it works, HOGIE... 541-543-4356 Call me if you want to try it out, I'll take it to your house when you get off work... That is not an IR alt. IR does not have the black plastic cover. 2 Quote Link to comment
KoHeartsGPA Posted June 9, 2016 Report Share Posted June 9, 2016 Those are both Hitachi...can't find any numbers on them.... 1 Quote Link to comment
banzai510(hainz) Posted June 9, 2016 Report Share Posted June 9, 2016 looks external type as it has the cage in back 2 Quote Link to comment
banzai510(hainz) Posted June 9, 2016 Report Share Posted June 9, 2016 far as I know the 521 alternator mount usues the smaller 12mm bolt heads which is like a M8 bolt. so the other Newer HIGHER AMP alternators use a bigger bolt hole. That's why I say use a 35amper. anyways I only take good volt reading with it at idle and no load . as a 35amper cant handle much with heater on and wipers ect. I drop before13 and even lower sometimes. I just load ajust as I drive. I see where they put reducers rings in the bolt holes to use the smaller bolts yhats how they list a 50amper option on 510s/521 with L16s On my Banzai 510 I had a machine shop drill out the mount straight thru to 3/8bolt and used a latter assume l20b 620 external reg ALTERNATOR that 74 alternator you just bought I bet has the bigger holes. Now you either got to make bigger holes in the alt mount or reduce the holes in the alt so it don't rattle/shake. If they listed a L20b in 74 I know its a bigger bolt like M10 If I remember right. HOUGE I would have that alt cked out anyways. and the wireing on truck is OK hopefull but ck the fuses also Draker is correct on the jumpers but get the correct colors shorted. 4 Quote Link to comment
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