140A alternators kit for rbs

[SLVRBAKSLPZ]

On 3/25/2018 at 10:44 PM, rat32r said:

Just want to and you can get ls1 alternator from 140A -220A is the most I have seen. Ls2,ls3 all fit my kit but will require a different plug for charge light.

Do you know of any conversion looms to use LS2/3 alternators with the RB factory connector?

[rat32r]

Do you know of any conversion looms to use LS2/3 alternators with the RB factory connector?

Ls2 and ls3 alternators are pwm controlled.
So unless you have a aftermarket ecu that you can program to control alternator output the stick with ls1 as it is plug and play

[SLVRBAKSLPZ]

On 2/20/2019 at 6:02 PM, rat32r said:

Ls2 and ls3 alternators are pwm controlled.
So unless you have a aftermarket ecu that you can program to control alternator output the stick with ls1 as it is plug and play

How does the voltage hold with the larger alternators? Is there a negative difference with the alternator size upgrade, that would require the "big 3" wiring setup? I doubt 140A would have an issue, but 200A+ may strain the stock wiring.

[rat32r]

If your going to upgrade the alternator, I have always suggested you upgrade the power and earth cable to the alternator. No point doing half the job,

[Matt Murray]

Does anyone have a specification sheet for these alternators?  Primarily what is the maximum rpm it can run to(eg 9000 engine RPM)? What current does it make at what rpm?(eg 50 amps at idle? 100 amps at 2000 engine rpm?)

Thanks Matt

[mrrb20det]

So im having an argument with a mate. I have just recently purchased a 140amp alternator kit from cwc. And he reckons ill need my car touch up tuned as it runs more voltage what are your guys thoughts on this should i tell my friend he needs to pay off the tea spoon or is he right?? 

[rat32r]

Does anyone have a specification sheet for these alternators?  Primarily what is the maximum rpm it can run to(eg 9000 engine RPM)? What current does it make at what rpm?(eg 50 amps at idle? 100 amps at 2000 engine rpm?)
Thanks Matt

Hi Matt,
I have made the pulley ratio for my kits to be about to handle 10-11k rpm
As that would equate to 6-7k rpm on the ls1 motor.ls motor runs a larger diameter harmonic balancer and a smaller alternator pulley.
With the RB the balancer is smaller and the pulley is larger.
Also I have had cars running at idle with 3 Walbro 460s all on at idle with aircon on max,headlights lights on and maintains 14.2volts.
Below is a data sheet from a generic ls1 alternator a customer sent me.

[rat32r]

So im having an argument with a mate. I have just recently purchased a 140amp alternator kit from cwc. And he reckons ill need my car touch up tuned as it runs more voltage what are your guys thoughts on this should i tell my friend he needs to pay off the tea spoon or is he right?? 

Hi, depending on how bad your voltage was before the alternator swap It can effect to tune.
Ie. I had a car running down to 13.2v on full load swapping to ls alternator I had 14.2 at full load. With extra voltage across the whole map.
It made the car run slightly richer than previous as noticed on the wide and when driving but didn’t do proper before alternator Dyno and after alternator swap dyno to get exact figures.

[mrrb20det]

21 minutes ago, rat32r said:

Hi, depending on how bad your voltage was before the alternator swap It can effect to tune.
Ie. I had a car running down to 13.2v on full load swapping to ls alternator I had 14.2 at full load. With extra voltage across the whole map.
It made the car run slightly richer than previous as noticed on the wide and when driving but didn’t do proper before alternator Dyno and after alternator swap dyno to get exact figures.

Ok so he isnt wrong. I can tell you i drove the car today for around 3 hours as i went away with the family. And with the a/c blasting and thermos kicking in and out voltage was reading between 13.2v and 12.6v. So what your saying is worst case the car runs richer until i can get it touched up note these readings are my standard alternator not the new one coming from you

Edited March 24, 2019 by mrrb20det

[Ben C34]

It depends how accurate the injector voltage offset data has been set up. The point of the offset is to account for this exact thing, so if things are all set correctly no need to retune.

 

[r33ryan]

Received & fitted my kit from Andrew yesterday.  

Andrew was very easy to deal with and sent the alternator off asap. 

Overall very happy with the kit. It was packaged very well for postage.

Quality looks great and everything was there for a quick install. 

Have around 14.2v @idle when warm. 

I would highly recommend the kit to anyone considering it. 

 

Cheers mate  @rat32r

[jrm]

Is this the same as the https://www.ebay.com.au/itm/273533325819 kit on eBay?  Any discount for us SAUers? haha.

Does anyone know how they compare to other approaches?

https://frenchysperformancegarage.com/products/nissan-rb-high-output-alternator

https://www.rhdjapan.com/ard-low-resistance-high-output-alternator-z31-r31-r32-r33-r34-c34-c35-wc34.html

The main benefit I could see of the LS1 + adaptor approach is once you have the bracket, adapter, pulley, etc - if the alternator ever needs replacement you can just pick up cheaper LS1 140A alternator?

[r33ryan]

10 minutes ago, jrm said:

Is this the same as the https://www.ebay.com.au/itm/273533325819 kit on eBay?  Any discount for us SAUers? haha.

Does anyone know how they compare to other approaches?

https://frenchysperformancegarage.com/products/nissan-rb-high-output-alternator

https://www.rhdjapan.com/ard-low-resistance-high-output-alternator-z31-r31-r32-r33-r34-c34-c35-wc34.html

The main benefit I could see of the LS1 + adaptor approach is once you have the bracket, adapter, pulley, etc - if the alternator ever needs replacement you can just pick up cheaper LS1 140A alternator?

Yep same as the ebay kit. 

 

Have a look back through this thread, pretty sure a few people have had a wait on the ard alternators and not readily available and cheap like ls1 alternators. Pick up 2nd hand ls1 alt for $50-$100.  

As you said the advantage is being able to remove the pulley & adapter to use it on another ls1 alt if need be but if you buy a new one in the kit the likely hood of needing to replace should be pretty low. 

 

I'd send Andrew a message and get a price. His number is on the thread a few pages back.

[rat32r]

Is this the same as the https://www.ebay.com.au/itm/273533325819 kit on eBay?  Any discount for us SAUers? haha.

Does anyone know how they compare to other approaches?
https://frenchysperformancegarage.com/products/nissan-rb-high-output-alternator
https://www.rhdjapan.com/ard-low-resistance-high-output-alternator-z31-r31-r32-r33-r34-c34-c35-wc34.html
The main benefit I could see of the LS1 + adaptor approach is once you have the bracket, adapter, pulley, etc - if the alternator ever needs replacement you can just pick up cheaper LS1 140A alternator?

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