Looking for a High Output Alternator for the SR

[DanielIser]

Anybody know any companies that make this, or someplace to buy one?? Anybody have one for sale?

[240SXer]

First figure out if any USDM cars came with an alternator that will work in the SR. Then look for a high output for that car. If not, there are places that will rebuild them with High Output internals.

I'm just curious tho. why?

[vlow1210]

usdm s14 240sx SE 90 amps (as opposed to 80 on the non-SE and s13)

You need to mod it, swap pullies and then drill out the threads on the KA alt. VERY easy to do, took us less than 5 minutes literally.

[DanielIser]

My stereo has a heavy power pull on it, when the bass hits it can sometimes cause the car to shutter when under acceleration. The high output alt and a second battery will take care of that. Vlow do you know if the s14 240sx 120 amp ones will work?

[ckamc]

*pokes u* we are chattin about SR's not KA's unless the alt for the two are pretty interchangable. I saw some highend alts in a mag i have *need to dig thru my stuff to find it* I will let you know if they have anythin for the SR... i believe i heard of some high end ones placed on the DE so I bet it will go onto a DET no prob

[240SXer]

Couldnt you just get a secondary battery and some caps?

My stereo has a heavy power pull on it, when the bass hits it can sometimes cause the car to shutter when under acceleration. The high output alt and a second battery will take care of that. Vlow do you know if the s14 240sx 120 amp ones will work?

[240SXer]

If your problem is only when the base hits, it's likely that the only thing you need is some caps. It does not sound like the charging system can't handle the power, it seems to be just your electronics draw too much at one time. Dual battery and caps will solve your problem 100%, but just caps will probably make everything fine. A larger amperage alternator won't fix it. It's still going to draw too much when the bass hits.

[Silvia007]

I'm looking for one too. I have a 3,000 watt audio system with lots of accessories such as a 1,000 watt power inverter to power 110 volt equipment. My charging system don't really do much at night and when it's warm as heck outside with the AC on.

[vlow1210]

*pokes u* we are chattin about SR's not KA's unless the alt for the two are pretty interchangable. I saw some highend alts in a mag i have *need to dig thru my stuff to find it* I will let you know if they have anythin for the SR... i believe i heard of some high end ones placed on the DE so I bet it will go onto a DET no prob

yep KA alternator will BOLT onto SR20DET with 2 minor mods, changing pullies and drilling out the threads so the belt tensioner bolt will go through the alternator instead of screwing into it.

i have an s13 KA24DE alt on my s14 sr

[DanielIser]

I have a ton of electronics, several amps other than the subs amp, clarion in dash dvd etc. So its not just the bass, because there are constant power pulls that take away from the ignition spark and cause stuttering etc. The extra amperage would take care of that. I will do the caps for the base though. J/w also, i know that the bass adds tons of wait to the car, does anybody know if a light weight c/f box is possible, or would it not produce the sound properly?

[240SXer]

I have a ton of electronics, several amps other than the subs amp, clarion in dash dvd etc. So its not just the bass, because there are constant power pulls that take away from the ignition spark and cause stuttering etc. The extra amperage would take care of that. I will do the caps for the base though. J/w also, i know that the bass adds tons of wait to the car, does anybody know if a light weight c/f box is possible, or would it not produce the sound properly?

A C/F box would sound like ***. You need heavy wood. The weight of the wood is what makes it hold the sound so well. Anyway, ya, a high output alternator might help you, but it'll still sputter on bass lines unless you get some caps. They're not too expencive. I still think you can run all your stuff on the stock alternator if you run a few caps, but it might not be worth all the trouble if you can easily get a high output alternator. But ya, the KA SE is 90ampz. So that would probably be a good 20amps more than the sr's (i'm 100% guessing that the SRs is slightly less power than a base KA)

Getting it to fit i'm sure isnt all that hard. I'd say just do the alternator first, and if that does not help then do the caps. No use spending money twice.

You must have some crazy bass though. I've got 2 12in subs, and a 760watt amp, and a 200wat amp for the sats, and a desk. I have no problems, light dim a tad but that's about it.

[DanielIser]

I have 2 L7 10s and a Kicker KX1200.1 that is actually pushing closer to 1500 watts. If i turn it all the way up and the car is idleing with the headlights on, when it hits the lights dim almost to the point of a weak flashlight. But it is almost to the point that you cant sit in it either. At about 80% volume you cant read street signs and vision goes blurry, nose twitches etc. As for the box, i found out today that it is possible and actually sounds good too. The problem isnt the box itself, its the price of doing it. Carbon fiber itself is flexible, which is why most wouldnt think to use it, but if you do enough layers you lose the flex, and c/f also seals really well too. There was a company that had some carbon fiber sub enclosures at SEMA last year and also had some at Bass Off in Daytona this year too. I am trying to find out who they were. I will post the information once i find it. The only problem i have found with building the box of C/F is the overall cost.

[240SXer]

Ya, I guess if you made it thick enough. Then the weight savings won't be as imressive and it'll cost a crazy amount. I'll look cool tho

[DanielIser]

Actually, the boxes i saw in Daytona I could easily pick up with 1 or 2 fingers, they were about 8LBS total weight plus speaker!

[240SXer]

Humm.. let me find a new reason to hate on them..

Oh yeah. Too expencive, you're better off just making your car put out more power.

[DanielIser]

Im workin on it, but as for too expensive, i can take care of that. I have all the stuff to efectively make the box, and can get the fiber matts pretty cheap so price is not to bad. But I definately like your idea.. More power!!!