Richie Posted November 11, 2020 Report Share Posted November 11, 2020 (edited) Hey. I was wondering if a 240z internally regulated alternator 60 amo would fit in the mounts of a 74 620 L16. I’m using a universal wiring harness and took out the external regulator. Edited November 11, 2020 by Richie Wrong year Quote Link to comment
Crashtd420 Posted November 11, 2020 Report Share Posted November 11, 2020 It will probably fit but I believe the 240z was externally regulated... There is a 60 amp the is internally regulated, give me a second and I'll get the part number... Quote Link to comment
Crashtd420 Posted November 11, 2020 Report Share Posted November 11, 2020 1978 nissan 200sx.... 60 and internally regulated, fyi they are a tight fit but they will with as short of a belt as you can get.... https://www.oreillyauto.com/detail/b/ultima-5353/charging---starting-16772/alternator-11425/f7cab2ae3cc0/ultima-60-amp-alternator-remanufactured/r111307b/4546294 Quote Link to comment
Richie Posted November 11, 2020 Author Report Share Posted November 11, 2020 1 hour ago, Crashtd420 said: 1978 nissan 200sx.... 60 and internally regulated, fyi they are a tight fit but they will with as short of a belt as you can get.... https://www.oreillyauto.com/detail/b/ultima-5353/charging---starting-16772/alternator-11425/f7cab2ae3cc0/ultima-60-amp-alternator-remanufactured/r111307b/4546294 Thank you! Yea so I’m using a gm alternator because it’s plug n play on my harness so I created my own mount. But it does look good. What do you mean shorter belt? Quote Link to comment
Crashtd420 Posted November 11, 2020 Report Share Posted November 11, 2020 1 hour ago, Richie said: Thank you! Yea so I’m using a gm alternator because it’s plug n play on my harness so I created my own mount. But it does look good. What do you mean shorter belt? If using a GM it doesnt matter, but with the L series in the truck the larger diameter altenator comes close to hitting the idler arm on the frame.... short belt keeps it as close to the block as possible to keep clearance. 1 Quote Link to comment
Crashtd420 Posted November 11, 2020 Report Share Posted November 11, 2020 Maybe it was a longer belt, I cant remember now... I do know It was a different belt, but again doesnt really matter if you went with the gm altenator 1 Quote Link to comment
datzenmike Posted November 11, 2020 Report Share Posted November 11, 2020 ALL '78 and up Datsun/Nissan alternators are internally regulated. 1 Quote Link to comment
Richie Posted November 11, 2020 Author Report Share Posted November 11, 2020 1 hour ago, Crashtd420 said: If using a GM it doesnt matter, but with the L series in the truck the larger diameter altenator comes close to hitting the idler arm on the frame.... short belt keeps it as close to the block as possible to keep clearance. Yea I think the Gm is fine but I made a mount to mount it on the block but I can see me driving and the alternator shakes or something and I’m screwed. So I wanted to get an Datsun one that matches the oem mount so I can not stress about it. Quote Link to comment
datzenmike Posted November 11, 2020 Report Share Posted November 11, 2020 Confused. Are you using a GM one or not? Quote Link to comment
Richie Posted November 11, 2020 Author Report Share Posted November 11, 2020 17 minutes ago, datzenmike said: Confused. Are you using a GM one or not? GM Quote Link to comment
Richie Posted November 24, 2020 Author Report Share Posted November 24, 2020 (edited) On 11/11/2020 at 1:08 PM, Crashtd420 said: Maybe it was a longer belt, I cant remember now... I do know It was a different belt, but again doesnt really matter if you went with the gm altenator Any idea how I would wire the 200sx internal alternator to a 12 circuit after market wiring harness? I got it off speedway motors. The harness has an alt power wire and alt excitor wire. Edited November 24, 2020 by Richie Quote Link to comment
Crashtd420 Posted November 24, 2020 Report Share Posted November 24, 2020 45 minutes ago, Richie said: Any idea how I would wire the 200sx internal alternator to a 12 circuit after market wiring harness? I got it off speedway motors. The harness has an alt power wire and alt excitor wire. Well the excitor wire would most likely be the lamp signal L on the altenator, and the power wire would go to the main lug and can be jumped to the sense wire which would be the S on the altenator. 1 Quote Link to comment
Richie Posted November 24, 2020 Author Report Share Posted November 24, 2020 35 minutes ago, Crashtd420 said: Well the excitor wire would most likely be the lamp signal L on the altenator, and the power wire would go to the main lug and can be jumped to the sense wire which would be the S on the altenator. When you mean jumped for the power cord, you mean power to the lug then a wire from the lug to the S? Quote Link to comment
Crashtd420 Posted November 24, 2020 Report Share Posted November 24, 2020 16 minutes ago, Richie said: When you mean jumped for the power cord, you mean power to the lug then a wire from the lug to the S? Yes... usually the sense wire goes over to the large power connection at the starter, that's how datsun did it.... it just needs the battery power as a voltage input... I believe that's the signal it uses to regulate the power... 1 Quote Link to comment
Richie Posted November 25, 2020 Author Report Share Posted November 25, 2020 Sweet thank you! I’ll give an update on it when the part comes in. 8 hours ago, Crashtd420 said:Yes... usually the sense wire goes over to the large power connection at the starter, that's how datsun did it.... it just needs the battery power as a voltage input... I believe that's the signal it uses to regulate the power... Quote Link to comment
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