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Late Model AC Blower Motor
Posted by: charlesc ()
Date: October 08, 2018 03:43PM

Need a blower motor for late model AC. Prefer a new after market. I understand from this forum the AC blower rotates in the opposite direction of the heater blower (and blowers used in most other GM cars). However I couldn't find a part number for the AC blower. I can assure you the heater motor does not work - minimal air flow due to wrong rotation.

Anyone have a pn for after market motor?

For future reference how about the fan wheel as well.

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Re: Late Model AC Blower Motor
Posted by: Timothy Shortle ()
Date: October 08, 2018 03:45PM

If all else fails get a "good used" blower motor from 1 of our vendors.

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Re: Late Model AC Blower Motor
Posted by: Caraholic4life ()
Date: October 08, 2018 04:01PM

[www.corvair.com]

Clarks sells a High Volume blower motor that puts out about 25% more volume than a stock blower motor. They sell it for about $40.00 plus shipping and it bolts in.
All you need to do is swap over the fan cage from your old blower motor.

1962 95 F.C. Van
1965 Monza Coupe
Westminster, Maryland

MID ENG enthusiast &
prior Kelmark owner.

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Re: Late Model AC Blower Motor
Posted by: charlesc ()
Date: October 08, 2018 04:12PM

I believe this is the heater blower which, if my understanding is correct, rotates in the opposite direction of the AC blower. Why????

Design of the fan wheel is sensitive to direction of rotation. A possible option is to find a heater fan wheel that is compatible with the heater motor. Does anyone know if this would work?

Prefer to find correct rotation motor, either new or used.

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Re: Late Model AC Blower Motor
Posted by: Caraholic4life ()
Date: October 08, 2018 04:17PM

I completely overlooked the A/C notation. I usually think of AC in relation to Delco. My apologies.

[corvaircenter.com]

Look at this thread Titled LM A/C Blower Replacement (It Works!)
Posted by: aircooled6 () on Date: May 12, 2011 at 12:24PM

I hope something in the thread will be of some help all these years later.

Here is another one Titled New LM A/C Blower at AutoZone
Posted by: VegasVair () on Date: September 23, 2009 at 04:43PM [corvaircenter.com]

1962 95 F.C. Van
1965 Monza Coupe
Westminster, Maryland

MID ENG enthusiast &
prior Kelmark owner.



Edited 4 time(s). Last edit at 10/08/2018 04:27PM by Caraholic4life.

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Re: Late Model AC Blower Motor
Posted by: Caraholic4life ()
Date: October 08, 2018 04:29PM

[corvaircenter.com]

Here is another titled LM A/C Blower Motor - Substitute Available?
Posted by: aircooled6 () on Date: September 17, 2009 at 09:30PM

1962 95 F.C. Van
1965 Monza Coupe
Westminster, Maryland

MID ENG enthusiast &
prior Kelmark owner.

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Re: Late Model AC Blower Motor
Posted by: charlesc ()
Date: October 08, 2018 06:08PM

Thanks for all the help. I tried the FAQs and SEARCH, but didn't turn up the posts you listed.
The information on this forum is great.


For the benefit of others, the fan identified is a VDO brand, pn PM134. Shows to be available from numerous sources; Auto Zone, O'Reilly, Rock Auto, Amazon etc.


Will get one and see how it goes.

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Re: Late Model AC Blower Motor
Posted by: MattNall ()
Date: October 08, 2018 07:02PM

In the FAQ's now under interior...





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Late Model AC Blower Motor
Posted by: 2ragtops ()
Date: October 09, 2018 05:30AM

I have several original GM A/C blowers if that will help you out.

Bob Bauer

Show-Me Corvairs

1966 Monza Convert 140 P/G with A/C, plastic wheel with tele-column am-fm posi-traction
1966 Corsa Convert 180 wood wheel tele-column am-fm sport steering posi-traction
1965 Corsa Coupe Crown V8 mounted mid-body temporarily red lined for repair
House Springs, Missouri

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Re: Late Model AC Blower Motor
Posted by: Wagon Master ()
Date: October 09, 2018 06:17AM

Could we change this topic heading to high volume heater blower motor please, for help with future searches? Corvair's were also equipped with A/C and had quite different blowers than you are referring to.

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Re: Late Model AC Blower Motor
Posted by: MattNall ()
Date: October 09, 2018 06:50AM

WM everything is in our FAQ





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Late Model AC Blower Motor
Posted by: 66vairman ()
Date: October 09, 2018 07:59AM

This post got confusing. FAQ's have some info, but a lot of info to wade through.

For anyone that stumbles on this -- The heater blower motor and A/C motor do turn in opposite directions.

New replacement heater blower motor is PM102 and DOES NOT come with a fan. You have to reuse the metal blower fan off the old motor. DO NOT BUY A NEW PLASTIC FAN as they will melt since the blower moves HOT air from the engine. The PM 102 motor shaft that the fan fits on may be about 1/32" longer vs. the original motor so a washer may be needed under the fan retaining nut.

New replacement A/C blower motor is a PM134 and it comes with a plastic cage fan attached - fine to use as it only blows ambient temperature air into evaporator. This unit is lighter than the original fan. The plastic fan is that same size, but has a thicker reinforcing edge so fitting is CRITICAL or it will rub.

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Re: Late Model AC Blower Motor
Posted by: Wagon Master ()
Date: October 09, 2018 08:17AM

I surrender.

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Re: Late Model AC Blower Motor
Posted by: MattNall ()
Date: October 09, 2018 08:23AM

Wagon Master Wrote:
-------------------------------------------------------
> I surrender.
=================================================

You were "Wupped" before your feet hit the floor this morning!!! GGG





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Late Model AC Blower Motor
Posted by: 66vairman ()
Date: October 09, 2018 09:45AM

Well as long as we are having fun - LOL.

If you install a motor and fan that has reverse rotation to the factory fan WILL IT WORK?

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Re: Late Model AC Blower Motor
Posted by: joelsplace ()
Date: October 09, 2018 12:18PM

Not very well. Better than the wrong direction motor with the right direction fan. If you look at the housing it is designed for the air to flow off the cage in a specific direction.

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Re: Late Model AC Blower Motor
Posted by: 66vairman ()
Date: October 10, 2018 09:33PM

joelsplace Wrote:
-------------------------------------------------------
> Not very well. Better than the wrong direction
> motor with the right direction fan. If you look
> at the housing it is designed for the air to flow
> off the cage in a specific direction.

CORRECT! Good comments.

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Re: Late Model AC Blower Motor
Posted by: charlesc ()
Date: October 13, 2018 12:35PM

66vairman is correct. The new fan is a close fit. I ended up cutting 2 gaskets from sheet stock and stacking them to space the fan out a bit. Even then position is critical


The original metal fan cannot be used. Extends way too far on the new motor.

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Re: Late Model AC Blower Motor
Posted by: MattNall ()
Date: October 13, 2018 01:47PM

Good tip! Does it blow big time now!





MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

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Re: Late Model AC Blower Motor
Posted by: 66vairman ()
Date: October 13, 2018 08:34PM

charlesc Wrote:
-------------------------------------------------------
> 66vairman is correct. The new fan is a close fit.
> I ended up cutting 2 gaskets from sheet stock and
> stacking them to space the fan out a bit. Even
> then position is critical
>
>
> The original metal fan cannot be used. Extends way
> too far on the new motor.

Charlesc - I noticed the original fan was also offset in the housing. I tried "clocking" the fan motor (there are at least two positions were the holes line up) and that improved the centering. I've got a couple old fans and housings and both of my housing assemblies vary, neither one of them is completely centered, but the original metal fan with the thinner edge tolerated the offset more than the newer plastic fan.

Matt - yes the new PM134 throws a lot of air. Hard to compare to the original motor as the two original motors I have are not in good shape and probably don't perform like new.

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