Survey: Just how "ineffective" is standard for heat blower?, Max Defrost = no front blower on = no air coming out of vents Options

[MikeInMunich]

Happy First Sunday of the Oktberfest Gentlemen! PROST, from Munich! (IMG:style_emoticons/default/beerchug.gif) (IMG:style_emoticons/default/smilie_flagge6.gif)

Curious about this almost comical "instruction on our ventilation controls..."MAX DEFROST, upper levels left, lower lever right"...I was thinking, how is this correct, when the upper lever left turns the blower onto the windshield OFF?!

So I found this thread...

http://www.914world.com/bbs2/lofiversion/i...php?t75480.html

and then I went out and tested to see how much warm air from the back is actually blowing out of the vents at the windshield. Virtually NONE was coming out at all.

So...before I go seeking the possible reason, I'm curious about others' results for this same test. What is the best / normal (stock) result here? The hoses in the compartment were OK. I haven't checked those under the car or the dash yet.

How much more effective would a stronger blower be? Power / spec suggestions?

Thanks guys, and have a great Sunday!

Mike in Munich

[BeatNavy]

In my experience you should be able to noticeably feel air coming out. That's about it. At its best it's not going to blow you away like the max fan setting on a modern car. I actually took my blower out after futzing with it and trying to optimize the volume of air it would put out. It clutters the engine bay and I get enough heat/defrost from the engine fan.

Having said THAT...the teener has been relegated to outside the garage to make room for my wife's car. I drove all winter last year, but it's going to be a different story with the car starting outside and exposed to the elements in the winter mornings... (IMG:style_emoticons/default/dry.gif)

[GaroldShaffer]

In my experience you should be able to noticeably feel air coming out. That's about it. At its best it's not going to blow you away like the max fan setting on a modern car. I actually took my blower out after futzing with it and trying to optimize the volume of air it would put out. It clutters the engine bay and I get enough heat/defrost from the engine fan.

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My 70 had a 73 2.0L engine in it with no heater blower, just the engine fan. In the cool fall / early winter months I had plenty of heat to stay toasty warm, as long as I was moving, but come to a stop light you could feel the cabin start to cool down. As for defrosting the window I would just move all the levers to the right and use a mix of out side air with the warm air of the cabin and it seemed to work well that way.

[Mark Henry]

In my experience you should be able to noticeably feel air coming out. That's about it. At its best it's not going to blow you away like the max fan setting on a modern car. I actually took my blower out after futzing with it and trying to optimize the volume of air it would put out. It clutters the engine bay and I get enough heat/defrost from the engine fan.

(IMG:style_emoticons/default/agree.gif)

My 70 had a 73 2.0L engine in it with no heater blower, just the engine fan. In the cool fall / early winter months I had plenty of heat to stay toasty warm, as long as I was moving, but come to a stop light you could feel the cabin start to cool down. As for defrosting the window I would just move all the levers to the right and use a mix of out side air with the warm air of the cabin and it seemed to work well that way.

(IMG:style_emoticons/default/agree.gif)

When I had my 2.0 SSI's, late october I had bitchin heat, in fact on a cool day I had enough blasting out to keep it comfortable with the top off.
Not modern car blasting heat, but for a aircooled excellent heat, 100X better than any other aircooled I've owned.

I bet you have a mouse nest up your tubes.

[scott_in_nh]

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When I had my 2.0 SSI's, late october I had bitchin heat, in fact on a cool day I had enough blasting out to keep it comfortable with the top off.
Not modern car blasting heat, but for a aircooled excellent heat, 100X better than any other aircooled I've owned.

I bet you have a mouse nest up your tubes.

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I run the heat with the top off fairly often and it actually blows harder and hotter with the top off because you have removed the restriction (the top) and when moving the cabin becomes a low pressure area causing much greater airflow through the heating system than both blowers provide on their own.


I have also driven through a cold and snow-less winter and found the heat and defrost capability to be adequate at low speeds and toasty at highway speeds.