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Re: [GMCnet] WE ALL NEED MORE AIR [message #321611 is a reply to message #320582]

Thu, 03 August 2017 20:51

Thomas Pryor

Messages: 143
Registered: January 2011

Karma:

Senior Member

So OKAY, just occurred to me that the modification also has a significant
increase in Square inches of inlet size.

The opening on the side of the HVAC box has an effective size 5" X 3.5" or
17.5 Sq inches.

Cutouts for the double centrifugal into 4" X 3.5" X two or 28 square
inches.

I believe that works out to be about a 35% increase, just say'n

____________________________________________________________
________________________________________________

FOR GENERAL COMPARISON ........BUT CERTAINLY NOT SCIENTIFIC..........ORDER
OF MAGNITUDE COMPARISON:

SPAL makes a 3 speed single impeller (PN SPAL 064 A42 28 D 12V 3 SPEED
BLOWER) SEE (http://www.spalautomotive.com/eng/products/centrifugal_12S.aspx
)

I think itis comparable to our OEM SINGLE IMPELLER BLOWER.............. IT
IS RATED AT 455 CFM

SPAL INLET is 4 3/4" or 19 SQ INCHES GMC INLET is 4
1/2 " 17.3 SQ INCHES

SPAL OULET IS 5 3/4" X 2 5/8" or 15 SQ INCHES GMC OUTLET IS 5" X 3.5"
OR 17.5 SQ INCHES

SPAL IMPELLER IS 4.8 INCHES DIA GMC IMPELLER IS
5.0 INCHES DIA

SPAL IMPELLER IS 3.9 INCHES WIDTH GMC IMPELLER IS 3.25
INCHES WIDTH

I THINK WE COULD MAKE THE STATEMENT THAT OUR GMC BLOWER EFFECTIVELY
DEVELOPS 450 TO 500 CFM.
THAT SAID THE MCC 15-1561 DOUBLE BLOWER IS RATED AT 650 CFM PER MY CONTACT
AT MCC, JOSH.

THAT IS A 23 % IMPROVEMENT, EH?

_______________________________________________________________________________________________________________

IT WOULD APPEAR THAT THIS MODIFICATION INCREASES HVAC INLET SIZE BY 35%
AND A 23 % CFM INCREASE........JUST SAY'N

__________________________________________________________________________________________________________________

BTW Just found one more source on Bay for the MCC 151561 blower at $89.00
http://www.ebay.com.sg/itm/MCC-12V-Dual-Squirrel-Cage-Twin-Blower-Fan-Motor-
Assy-15-1561/250875055779
--
--
Regards,

Tom Pryor
4188 Limerick Dr
Lake Wales, Fl 33859
Cell 248 470 9186

Living on a waterfront is not a matter of life or death. Its more
important than that.
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[Message index]

		[GMCnet] WE ALL NEED MORE AIR By: Thomas Pryor on Mon, 17 July 2017 09:55
		Re: [GMCnet] WE ALL NEED MORE AIR By: Emery Stora on Mon, 17 July 2017 10:17
		Re: [GMCnet] WE ALL NEED MORE AIR By: RF_Burns on Mon, 17 July 2017 10:43
		Re: [GMCnet] WE ALL NEED MORE AIR By: jhbridges on Mon, 17 July 2017 12:40
		Re: [GMCnet] WE ALL NEED MORE AIR By: Thomas Pryor on Mon, 17 July 2017 13:10
		Re: [GMCnet] WE ALL NEED MORE AIR By: Guy Lopes on Mon, 17 July 2017 14:20
		Re: [GMCnet] WE ALL NEED MORE AIR By: Emery Stora on Mon, 17 July 2017 14:45
		Re: [GMCnet] WE ALL NEED MORE AIR By: KB on Wed, 02 August 2017 15:38
		Re: [GMCnet] WE ALL NEED MORE AIR By: lqqkatjon on Wed, 02 August 2017 16:21
		Re: [GMCnet] WE ALL NEED MORE AIR By: KB on Wed, 02 August 2017 19:05
		Re: [GMCnet] WE ALL NEED MORE AIR By: johnd01 on Wed, 02 August 2017 19:09
		Re: [GMCnet] WE ALL NEED MORE AIR By: KB on Wed, 02 August 2017 21:00
		Re: [GMCnet] WE ALL NEED MORE AIR By: jimk on Wed, 02 August 2017 21:42
		Re: [GMCnet] WE ALL NEED MORE AIR By: KB on Wed, 02 August 2017 22:15
		Re: [GMCnet] WE ALL NEED MORE AIR By: jimk on Wed, 02 August 2017 22:26
		Re: [GMCnet] WE ALL NEED MORE AIR By: johnd01 on Wed, 02 August 2017 22:58
		Re: [GMCnet] WE ALL NEED MORE AIR By: USAussie on Wed, 02 August 2017 23:11
		Re: [GMCnet] WE ALL NEED MORE AIR By: johnd01 on Wed, 02 August 2017 23:27
		Re: [GMCnet] WE ALL NEED MORE AIR By: Keith V on Thu, 03 August 2017 08:54
		Re: [GMCnet] WE ALL NEED MORE AIR By: jimk on Thu, 03 August 2017 09:33
		Re: [GMCnet] WE ALL NEED MORE AIR By: johnd01 on Wed, 02 August 2017 22:25
		Re: [GMCnet] WE ALL NEED MORE AIR By: KB on Thu, 03 August 2017 11:47
		Re: [GMCnet] WE ALL NEED MORE AIR By: johnd01 on Thu, 03 August 2017 12:11
		Re: [GMCnet] WE ALL NEED MORE AIR By: KB on Thu, 03 August 2017 13:19
		Re: [GMCnet] WE ALL NEED MORE AIR By: johnd01 on Thu, 03 August 2017 13:47
		Re: [GMCnet] WE ALL NEED MORE AIR By: jimk on Thu, 03 August 2017 14:47
		Re: [GMCnet] WE ALL NEED MORE AIR By: jricke on Thu, 03 August 2017 16:45
		Re: [GMCnet] WE ALL NEED MORE AIR By: USAussie on Thu, 03 August 2017 16:55
		Re: [GMCnet] WE ALL NEED MORE AIR By: bhayes on Mon, 17 July 2017 14:45
		Re: [GMCnet] WE ALL NEED MORE AIR By: Sammy Williams on Mon, 17 July 2017 15:29
		Re: [GMCnet] WE ALL NEED MORE AIR By: powerjon on Mon, 17 July 2017 16:35
		Re: [GMCnet] WE ALL NEED MORE AIR By: powerjon on Mon, 17 July 2017 16:39
		Re: [GMCnet] WE ALL NEED MORE AIR By: USAussie on Mon, 17 July 2017 18:53
		Re: [GMCnet] WE ALL NEED MORE AIR By: jimk on Mon, 17 July 2017 20:53
		Re: [GMCnet] WE ALL NEED MORE AIR By: Bill Van Vlack on Tue, 18 July 2017 20:09
		Re: [GMCnet] WE ALL NEED MORE AIR By: Thomas Pryor on Wed, 19 July 2017 20:55
		Re: [GMCnet] WE ALL NEED MORE AIR By: Emery Stora on Wed, 19 July 2017 21:04
		Re: [GMCnet] WE ALL NEED MORE AIR By: Thomas Pryor on Thu, 20 July 2017 10:52
		Re: [GMCnet] WE ALL NEED MORE AIR By: Rob on Thu, 03 August 2017 13:36
		Re: [GMCnet] WE ALL NEED MORE AIR By: James Hupy on Thu, 03 August 2017 13:29
		Re: [GMCnet] WE ALL NEED MORE AIR By: Thomas Pryor on Thu, 03 August 2017 16:48
		Re: [GMCnet] WE ALL NEED MORE AIR By: USAussie on Thu, 03 August 2017 17:35
		Re: [GMCnet] WE ALL NEED MORE AIR By: Ken Henderson on Thu, 03 August 2017 18:23
		Re: [GMCnet] WE ALL NEED MORE AIR By: SpookyEng on Thu, 03 August 2017 18:54
		Re: [GMCnet] WE ALL NEED MORE AIR By: KB on Thu, 03 August 2017 23:08
		Re: [GMCnet] WE ALL NEED MORE AIR By: tphipps on Fri, 04 August 2017 06:55
		Re: [GMCnet] WE ALL NEED MORE AIR By: Matt Colie on Fri, 04 August 2017 07:32
		Re: [GMCnet] WE ALL NEED MORE AIR By: KB on Fri, 04 August 2017 16:53
		Re: [GMCnet] WE ALL NEED MORE AIR By: johnd01 on Sat, 05 August 2017 21:36
		Re: [GMCnet] WE ALL NEED MORE AIR By: KB on Wed, 09 August 2017 21:25
		Re: [GMCnet] WE ALL NEED MORE AIR By: KB on Mon, 14 August 2017 21:33
		Re: [GMCnet] WE ALL NEED MORE AIR By: lqqkatjon on Tue, 15 August 2017 09:06
		Re: [GMCnet] WE ALL NEED MORE AIR By: KB on Tue, 15 August 2017 16:28
		Re: [GMCnet] WE ALL NEED MORE AIR By: USAussie on Thu, 03 August 2017 19:21
		Re: [GMCnet] WE ALL NEED MORE AIR By: Ken Henderson on Thu, 03 August 2017 20:02
		Re: [GMCnet] WE ALL NEED MORE AIR By: USAussie on Thu, 03 August 2017 20:12
		Re: [GMCnet] WE ALL NEED MORE AIR By: Ken Henderson on Thu, 03 August 2017 20:58
		Re: [GMCnet] WE ALL NEED MORE AIR By: johnd01 on Thu, 03 August 2017 20:29
		Re: [GMCnet] WE ALL NEED MORE AIR By: USAussie on Thu, 03 August 2017 20:41
		Re: [GMCnet] WE ALL NEED MORE AIR By: Thomas Pryor on Thu, 03 August 2017 20:51
		Re: [GMCnet] WE ALL NEED MORE AIR By: KB on Thu, 03 August 2017 23:05
		Re: [GMCnet] WE ALL NEED MORE AIR By: jhbridges on Tue, 15 August 2017 08:58

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