GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.
Home » Public Forums » GMCnet » 28SI Alternator vs 27SI
Re: 28SI Alternator vs 27SI [message #360512 is a reply to message #360217] Fri, 04 December 2020 12:58 Go to previous message
TR 1 is currently offline  TR 1   United States
Messages: 348
Registered: August 2015
Location: DFW
Karma:
Senior Member
If anyone is interested, the alternator arrived from the vendor I mentioned earlier in the thread 3 days later. I have not installed it yet, but did take some pics alongside the stock 27SI for size comparison if anyone is interested.

Remember, there is no external fan needed on the 28SI, so I tried to line the 2 up in the pics with where I believe the pulley will need to mount. Since this cheats the 28SI forward compared the the 27SI, I think we are talking less than an inch difference in where the rear of the alternator ends up, outside of where the lug connections are. I chose 8600313 specifically for these, as I did not want to mess with a harness adapter. The lugs should end up high on the alternator when mounted, so they should not interfere with the valve cover from what I can see so far.

Overall, it's not much bigger in any dimension, and smaller in overall diameter than the 27SI. Not bad for 200amps/140 at idle....

http://www.gmcmhphotos.com/photos/g7338-28-si-alternator.html

Not sure why that fist pic is fisheyed... The rest look ok.

Mark S. '73 Painted Desert, Manny 1 Ton Front End, Howell Injection, Leigh Harrison 4bag and Rear Brakes, Fort Worth, TX

Report message to a moderator

[Message index]
 
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Read Message
Previous Topic: Engine lubrication
Next Topic: [GMCnet] Ride height.
Goto Forum:
  


Current Time: Fri Sep 27 17:34:37 CDT 2024

Total time taken to generate the page: 0.00712 seconds
.:: Contact :: Home ::.

Powered by: FUDforum 3.1.1.
Copyright ©2001-2021 FUDforum Bulletin Board Software