Home » Public Forums » GMCnet » 28SI Alternator vs 27SI
Re: 28SI Alternator vs 27SI [message #360220 is a reply to message #360217] |
Fri, 20 November 2020 14:27 |
|
Matt Colie
Messages: 8547 Registered: March 2007 Location: S.E. Michigan
Karma:
|
Senior Member |
|
|
TR 1 wrote on Fri, 20 November 2020 12:46So I'm working on a project to increase the capacity on the factory alternator above 100 amps, and I came across this page on the Delco Remy website which I believe says the 27SI was superseded by the 28SI.
http://www.delcoremy.com/find-a-part/product-details/27si-alternator
The dimensions of the 28SI seems roughly the same as the 27SI, and they both seem to use the same "J180" mounting style. The 28SI seems to be used a lot on heavy duty trucks, school buses, etc. and is offered in factory amperages of 130-200 which slots in nicely above the 27SI.
I have an email inquiry in to Delco Remy to see if they can confirm this information, but wanted to check here to see if anyone may already be running a 28SI.
Looking online, it appears you can find aftermarket 200amp 28SIs for a little over 100 bucks... And Genuine Delco Remys for a little over 200 bucks.
Either way, I will post back here with what I find.
Mark,
What do you hope to get with a larger alternator? Even if the house bank has been relocated to the rear and you ran a pair of welding cables to it, It will still take about 5 or 6 hours to recover a 4D or pair of GC2s from 50%SOC to 95%. Another issue I will caution you about is that the 28SI is a much larger frame than the 27SI, so be sure to collect the real dimensions before you go too far.
Matt
Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit
|
|
|
|
|
28SI Alternator vs 27SI
By: TR 1 on Fri, 20 November 2020 11:46
|
|
|
Re: 28SI Alternator vs 27SI
|
|
|
Re: 28SI Alternator vs 27SI
By: TR 1 on Fri, 20 November 2020 18:19
|
|
|
Re: 28SI Alternator vs 27SI
By: TR 1 on Fri, 20 November 2020 18:37
|
|
|
Re: 28SI Alternator vs 27SI
|
|
|
Re: 28SI Alternator vs 27SI
|
|
|
Re: 28SI Alternator vs 27SI
|
|
|
Re: [GMCnet] 28SI Alternator vs 27SI
|
|
|
Re: 28SI Alternator vs 27SI
By: JohnL455 on Sat, 21 November 2020 19:47
|
|
|
Re: 28SI Alternator vs 27SI
By: JohnL455 on Sun, 22 November 2020 18:35
|
|
|
Re: 28SI Alternator vs 27SI
By: TR 1 on Mon, 23 November 2020 08:25
|
|
|
Re: 28SI Alternator vs 27SI
By: JohnL455 on Mon, 23 November 2020 10:16
|
|
|
Re: 28SI Alternator vs 27SI
By: TR 1 on Mon, 23 November 2020 10:34
|
|
|
Re: [GMCnet] 28SI Alternator vs 27SI
|
|
|
Re: [GMCnet] 28SI Alternator vs 27SI
|
|
|
Re: [GMCnet] 28SI Alternator vs 27SI
|
|
|
Re: [GMCnet] 28SI Alternator vs 27SI
|
|
|
Re: [GMCnet] 28SI Alternator vs 27SI
|
|
|
Re: [GMCnet] 28SI Alternator vs 27SI
|
|
|
Re: [GMCnet] 28SI Alternator vs 27SI
|
|
|
Re: 28SI Alternator vs 27SI
By: TR 1 on Mon, 23 November 2020 12:04
|
|
|
Re: 28SI Alternator vs 27SI
By: TR 1 on Wed, 25 November 2020 09:58
|
|
|
Re: 28SI Alternator vs 27SI
By: TR 1 on Wed, 25 November 2020 12:22
|
|
|
Re: 28SI Alternator vs 27SI
By: mghamms on Wed, 25 November 2020 12:35
|
|
|
Re: 28SI Alternator vs 27SI
By: TR 1 on Wed, 25 November 2020 13:14
|
|
|
Re: 28SI Alternator vs 27SI
By: mghamms on Wed, 25 November 2020 13:45
|
|
|
Re: 28SI Alternator vs 27SI
|
|
|
Re: 28SI Alternator vs 27SI
|
|
|
Re: 28SI Alternator vs 27SI
|
|
|
Re: 28SI Alternator vs 27SI
By: mghamms on Thu, 26 November 2020 10:51
|
|
|
Re: 28SI Alternator vs 27SI
By: TR 1 on Fri, 04 December 2020 12:58
|
Goto Forum:
Current Time: Fri Sep 27 17:36:29 CDT 2024
Total time taken to generate the page: 0.01381 seconds
|