10-30-2013, 06:15 PM | #1 |
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Blower motor upgrade
Alot of you may already know about this but I just came across it today. Supposedly if you take a blower motor and fan for a 94 Chevy truck and put it in a square with air that it blows alot more air. Somebody on FB was saying something about it then posted a link. So here it is. Something to look into.
http://forum.73-87chevytrucks.com/sm...&topic=19365.0
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Roy 85 Short Bed Silverado- Work in progress. http://67-72chevytrucks.com/vboard/s...d.php?t=564818 1987 R10 shortie |
10-30-2013, 09:04 PM | #2 |
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Re: Blower motor upgrade
Replacing your old blower motor with a new stock one will make a big difference.I just did this in my crew.Also on my crew,most of the a/c stuff is long gone,so I pulled the evaporator core out of the heater-a/c box when I was replacing the heater cire& this really helped with air flow too.
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10-30-2013, 09:30 PM | #3 |
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Re: Blower motor upgrade
nice mine has been getting weaker and weaker I guess I know what I am going to replace it with.
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10-30-2013, 10:40 PM | #4 |
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Re: Blower motor upgrade
I guess it is supposed to spin alot faster than what ours call for.
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Roy 85 Short Bed Silverado- Work in progress. http://67-72chevytrucks.com/vboard/s...d.php?t=564818 1987 R10 shortie |
10-30-2013, 11:41 PM | #5 |
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Re: Blower motor upgrade
It's the same size motor. If you old one is still good, you can just lube the bearings and it'll run just like the new ones.
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10-31-2013, 10:04 AM | #6 |
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Re: Blower motor upgrade
check the connections too,try adding a ground wire see if it gets better
take the blower out,clean out the "hampster wheel" mice may even have used it's space for nesting
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10-31-2013, 12:14 PM | #7 |
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Re: Blower motor upgrade
"hampster wheel" mice may even have used it's space for nesting
Do you mean a work-out-area. |
10-31-2013, 02:45 PM | #8 |
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Re: Blower motor upgrade
yup, lol
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
10-31-2013, 08:39 PM | #9 | |
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Re: Blower motor upgrade
Did you happen to catch this post?
Quote:
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10-31-2013, 08:47 PM | #10 |
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Re: Blower motor upgrade
Why yes I did. I looked on O'reillys site for a motor for an 85 and one for 94. They were two different part numbers. They were not AC parts brand though.
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10-31-2013, 11:35 PM | #11 |
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Re: Blower motor upgrade
We had a similar thread here a while back on the same thing. http://67-72chevytrucks.com/vboard/s...d.php?t=593977 I had made the bold but cryptic statement that the perceived improvement was merely a result of "new" being better condition than the "old" fan it was replacing.
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11-01-2013, 01:37 AM | #12 | |
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Re: Blower motor upgrade
Quote:
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11-01-2013, 11:14 AM | #13 |
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Re: Blower motor upgrade
Has anyone thought about a voltage stepper for the high setting? That's what I'm looking into. Since the connectors appear to be simple spade connectors, something could be made plug-and-play without hacking the harness even.
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11-01-2013, 05:05 PM | #14 |
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Re: Blower motor upgrade
I installed a new blower motor for a '94 into my '80 this summer as well, and I took advantage of an opportunity to take some measurements with a calibrated anemometer before and after the upgrade. I reported my results in this thread: http://67-72chevytrucks.com/vboard/s...d.php?t=594506
Basically it was a bit of a disappointment in the sense that the increase in flow was barely perceptible, but it was measurable. Given the very low cost of a new blower motor I decided it was definitely worth the money spent. For $20 dollars or so I realized nearly a nearly 15% improvement in air flow. Perhaps my blower had been replaced years ago, and if it had been the original stock blower from 35 years ago I'd have seen a much greater improvement. I'd say if a person has any doubts about their blower, just plunk down the money and see if things get better. But unless you have a way to measure the difference, it is very possible you won't be able to tell.
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11-01-2013, 05:14 PM | #15 | |
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Re: Blower motor upgrade
Quote:
But isn't the blower already getting maximum system voltage when the fan is set to HIGH? How would you increase the voltage even further?
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