# S13 Alternators: SOHC vs. DOHC

**URL:** https://forums.speedlife.net/t/s13-alternators-sohc-vs-dohc/80434
**Category:** SON240sx Automotive
**Created:** [January 9, 2004, 8:31pm UTC](https://forums.speedlife.net/t/s13-alternators-sohc-vs-dohc/80434 "2004-01-09T20:31:25Z")
**Posts on this page:** 6
**Page:** 1

<div class="post-metadata">

### Author: ![dip](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/dip/32/5479_2.png) [@dip](https://forums.speedlife.net/u/dip)
#### Post date: [January 9, 2004, 8:31pm UTC](https://forums.speedlife.net/t/s13-alternators-sohc-vs-dohc/80434/1 "2004-01-09T20:31:25Z")

</div>

Are the two interchangable, k, thanks, bye.

-iQuABoB

---

<div class="post-metadata">

### Author: ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)
#### Post date: [January 11, 2004, 6:32pm UTC](https://forums.speedlife.net/t/s13-alternators-sohc-vs-dohc/80434/2 "2004-01-11T18:32:45Z")

</div>

Yes they are.

---

<div class="post-metadata">

### Author: ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)
#### Post date: [January 12, 2004, 12:18pm UTC](https://forums.speedlife.net/t/s13-alternators-sohc-vs-dohc/80434/3 "2004-01-12T12:18:59Z")

</div>

The only difference IIRC is that one of the alternators produces a little more current. Can’t Remember which one though.

---

<div class="post-metadata">

### Author: ![prodigy](https://avatars.discourse-cdn.com/v4/letter/p/8491ac/32.png) [@prodigy](https://forums.speedlife.net/u/prodigy)
#### Post date: [January 12, 2004, 12:23pm UTC](https://forums.speedlife.net/t/s13-alternators-sohc-vs-dohc/80434/4 "2004-01-12T12:23:05Z")

</div>

> [@SHIFT\_SR20DET](#):
>
> The only difference IIRC is that one of the alternators produces a little more current. Can’t Remember which one though.

If I had to guess I would say it’d be the 91-94 alternator as it has a few more accessories to power over the 89-90.

---

<div class="post-metadata">

### Author: ![SHIFT\_KA24DET](https://avatars.discourse-cdn.com/v4/letter/s/b9bd4f/32.png) [@SHIFT\_KA24DET](https://forums.speedlife.net/u/SHIFT_KA24DET)
#### Post date: [April 23, 2004, 4:23pm UTC](https://forums.speedlife.net/t/s13-alternators-sohc-vs-dohc/80434/5 "2004-04-23T16:23:51Z")

</div>

> [@philip\_240sx](#):
>
> '91+: 23A @ 1,300rpm  
> **_58A_** @ 2,500rpm
> 
> '89-90: 22A @ 1,300rpm  
> _ **63A** _ @ 2,500rpm
> 
> The '95+ is slightly more:  
> 22A @ 1,300rpm  
> 65A @ 2,500rpm

Looks like to me Philip the 89-90 produces more?

---

<div class="post-metadata">

### Author: ![dabum](https://avatars.discourse-cdn.com/v4/letter/d/41988e/32.png) [@dabum](https://forums.speedlife.net/u/dabum)
#### Post date: [April 24, 2004, 1:44pm UTC](https://forums.speedlife.net/t/s13-alternators-sohc-vs-dohc/80434/6 "2004-04-24T13:44:05Z")

</div>

SOHC --\> DOHC

[http://www.zilvia.net/faqs/archive/SOHCtoDOHC.asp](http://www.zilvia.net/faqs/archive/SOHCtoDOHC.asp)