Subject	Yeah, I used their 60%
Posted by	-Grimm- on May 08, 2014 at 5:45 PM
	This message has been viewed 264 times.
In Reply To	The alternator will never be 100% efficient. posted by DVDBURN (MD) on May 08, 2014 at 04:13 PM
Message	Although that's the first time I've read that figure I guess I left a step out, 196 watts at 100% efficiency is 0.25 HP, 0.44 HP at 60% efficiency. Without knowing the pulley dimensions off hand, I would say the stock pulley ratio is about 2.25:1. That puts the alternator at about 1500 RPM at engine idle. That would put the alternator output generally in the 50% output range (stock is 70 amps?) so 35 amps out. At 1500 RPM the alternator would be around 3300 RPM, into the 85% output range (60A) It would be near peak output by about 2200 (engine) RPM. ------------------------------------------------------------------ 1992 300ZX NA 5 Sp (Dead) 1990 300ZX NA Auto 2+2 (Dead) 1990 300ZX TT 5 Sp (Building) 2004 G35 Sport 6MT (DD)
Follow Ups	I called Walbro today..... - Madhatter10-6 15:19:52 05/07/14 Thanks, good to know - Turbodog (CT) 15:33:06 05/07/14 This is a good read on fuel control. - DVDBURN (MD) 16:25:48 05/07/14 ^^^ This. Pretty much what I was going to post. (n/m) - MixManMash 16:53:51 05/07/14 What current does the stock FP draw? - -Grimm- 16:56:23 05/07/14 The setups will not be identical. - DVDBURN (MD) 18:01:04 05/07/14 From the referenced article: - -Grimm- 09:42:27 05/08/14 The alternator will never be 100% efficient. - DVDBURN (MD) 16:13:35 05/08/14 Yeah, I used their 60% - -Grimm- 17:45:54 05/08/14 would an overdrive alternator pully help? (n/m) - LivinTheDream 22:30:48 05/08/14 It would help your output in the lower RPM - -Grimm- 12:03:37 05/09/14 The Z ecu will not get enuff voltage at idle with 2pumps - The Devils Z 22:50:55 05/07/14 Yeah? And? - DVDBURN (MD) 16:35:13 05/08/14 Re: This is a good read on fuel control. - Madhatter10-6 09:30:06 05/08/14 Ah OK. Thats good to know. (n/m) - DVDBURN (MD) 16:37:35 05/08/14 Technically, the FPC is not adjusting to various voltage - MixManMash 16:55:38 05/07/14 you just took his word for it without asking why? - aliaZ 18:50:28 05/07/14 I see another drawback : - Dark Diver 07:56:37 05/08/14 I may sound crazy but..... - Zvil (FL) 10:03:40 05/08/14 I used to feel the same thing when I used to top off - DVDBURN (MD) 16:44:41 05/08/14 Anyone ever installed a fuel cooler? - -Grimm- 17:47:06 05/08/14 I'm willing to give it a try..... if only there was a way to - Zvil (FL) 07:31:59 05/09/14 G force meter? - -Grimm- 12:04:56 05/09/14 so what you're saying is the amount of time - Zvil (FL) 15:47:34 05/09/14
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