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zerotofifty
Samba Member
Joined: December 27, 2003
Posts: 1559
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 Posted: Sun May 08, 2022 7:11 pm Post subject: Re: New doghouse fan shroud , what holes do I need to plug? |
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| VWFIXER wrote: |
| None need to be plugged, there is no data to support any claims that anything needs plugged in that shroud. In fact the shroud has built in features for the event that a heater hose should blow off. But do as the masses tell you to. |
I heard you really dont need all them fan blades either. You can remove most of the blades and it will be ok, this will cut power robbing losses as the fan will be easier to spin with few blades. VW waaaay over designed the fan, so rip those excess blades out with a pair of vice grips!
Another old racer speed trick which can also increase fuel mileage, which is so important these days is to oil the pulleys, this allows lots of belt slip so your fan robs even less horse
power. Quicker track times, and better economy around town!
Do it differently, because! |
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VWFIXER
Banned
Joined: January 21, 2011
Posts: 411
Location: Hawaii- Rarotonga
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| Posted: Sun May 08, 2022 7:36 pm Post subject: Re: New doghouse fan shroud , what holes do I need to plug? |
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| zerotofifty wrote: |
| VWFIXER wrote: |
| None need to be plugged, there is no data to support any claims that anything needs plugged in that shroud. In fact the shroud has built in features for the event that a heater hose should blow off. But do as the masses tell you to. |
I heard you really dont need all them fan blades either. You can remove most of the blades and it will be ok, this will cut power robbing losses as the fan will be easier to spin with few blades. VW waaaay over designed the fan, so rip those excess blades out with a pair of vice grips!
Another old racer speed trick which can also increase fuel mileage, which is so important these days is to oil the pulleys, this allows lots of belt slip so your fan robs even less horse
power. Quicker track times, and better economy around town!
Do it differently, because! |
That’s the spirit, VW didn’t put a warning lamp, so there you go.
But let’s be real, the original design does not ever shut the air flow off. When the heater boxes are off, the air just passes forward out the bypasses.
One could postulate that, blocking the air flow would could actually cause too much back pressure; making the fan generator engine work harder than it need too. Or just do as you’re told. It’s not an emergency is all I’m saying. Purely cosmetic. That air may work in a forced induction set up for fun,, anybody do it ?
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Over a million air cooled miles driven and 15,000+ cars serviced. |
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herbie1200
Samba Member
Joined: April 27, 2006
Posts: 833
Location: Rome - Italy
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| Posted: Fri May 13, 2022 6:05 am Post subject: Re: New doghouse fan shroud , what holes do I need to plug? |
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| VWFIXER wrote: |
That’s the spirit, VW didn’t put a warning lamp, so there you go.
But let’s be real, the original design does not ever shut the air flow off. When the heater boxes are off, the air just passes forward out the bypasses.
One could postulate that, blocking the air flow would could actually cause too much back pressure; making the fan generator engine work harder than it need too. Or just do as you’re told. It’s not an emergency is all I’m saying. Purely cosmetic. That air may work in a forced induction set up for fun,, anybody do it ? |
When the heater box are closed only a minimum flow of air is blown off.
I think you are considering the question too easy.
The more air escapes you open, the more power the fan wastes from the engine.
Withouth math, try this simple experiment, at home.
Use an hairdryer, set it to cold air, and listen to the motor sound.
Then close with one hand the air outlet... what happens? Yes! Unlike expected, You can hear the fan running faster. Then open gradually the air outlet and hear the fan slowing.
This demonstrates that the more air escapes, the more energy is wasted (if with the same voltage the fan slows it is wasting more energy). |
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VWFIXER
Banned
Joined: January 21, 2011
Posts: 411
Location: Hawaii- Rarotonga
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| Posted: Fri May 13, 2022 8:46 am Post subject: Re: New doghouse fan shroud , what holes do I need to plug? |
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| herbie1200 wrote: |
| VWFIXER wrote: |
That’s the spirit, VW didn’t put a warning lamp, so there you go.
But let’s be real, the original design does not ever shut the air flow off. When the heater boxes are off, the air just passes forward out the bypasses.
One could postulate that, blocking the air flow would could actually cause too much back pressure; making the fan generator engine work harder than it need too. Or just do as you’re told. It’s not an emergency is all I’m saying. Purely cosmetic. That air may work in a forced induction set up for fun,, anybody do it ? |
When the heater box are closed only a minimum flow of air is blown off.
I think you are considering the question too easy.
The more air escapes you open, the more power the fan wastes from the engine.
Withouth math, try this simple experiment, at home.
Use an hairdryer, set it to cold air, and listen to the motor sound.
Then close with one hand the air outlet... what happens? Yes! Unlike expected, You can hear the fan running faster. Then open gradually the air outlet and hear the fan slowing.
This demonstrates that the more air escapes, the more energy is wasted (if with the same voltage the fan slows it is wasting more energy). |
The fan produces 20 cubic feet per second. More than can fit past heads and cylinders at the same rate.
Besides I’ve seen countless vws driving with heater hoses blown off or entirely gone. And no damage was occurring. This hobby for you is my preferred profession. Your hair dryer metaphor missed the side of a barn. An electric motor driven fan is no match for engine powered fan. I think you guys are so used to talking to each other and these cackameme ideas you’ve convinced yourselves of just how fragile these cars are, which clearly they arnt. Hippies building and restroying them and they still remain
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Over a million air cooled miles driven and 15,000+ cars serviced. |
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herbie1200
Samba Member
Joined: April 27, 2006
Posts: 833
Location: Rome - Italy
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| Posted: Mon May 16, 2022 10:59 am Post subject: Re: New doghouse fan shroud , what holes do I need to plug? |
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| VWFIXER wrote: |
The fan produces 20 cubic feet per second. More than can fit past heads and cylinders at the same rate.
Besides I’ve seen countless vws driving with heater hoses blown off or entirely gone. And no damage was occurring. This hobby for you is my preferred profession. Your hair dryer metaphor missed the side of a barn. An electric motor driven fan is no match for engine powered fan. I think you guys are so used to talking to each other and these cackameme ideas you’ve convinced yourselves of just how fragile these cars are, which clearly they arnt. Hippies building and restroying them and they still remain |
The fan produce that air flow only at maximum speed.
VW engines are not fragile but vw engineers designed it considering a correct maintenance: no missing parts, no modification, etc.
Engines run also if some parts are missing but.. how running? a lot of engines become rattly, noisy, weak, leaking, dirty, etc.
For me a "running" engine is not enough. Overheating, in vw engines, is almost ever due to missing parts.
30-40 years ago vw mechanics were "rude" (not the official VW assistance); but now informations are shared, and a lot of old stupid errors (like using 20/50 oil, missing parts on engine, or fixing and engine only to keep it "running" without care for other parameters) are deprecated and no more allowed. |
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VWFIXER
Banned
Joined: January 21, 2011
Posts: 411
Location: Hawaii- Rarotonga
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| Posted: Mon May 16, 2022 11:21 am Post subject: Re: New doghouse fan shroud , what holes do I need to plug? |
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| herbie1200 wrote: |
| VWFIXER wrote: |
The fan produces 20 cubic feet per second. More than can fit past heads and cylinders at the same rate.
Besides I’ve seen countless vws driving with heater hoses blown off or entirely gone. And no damage was occurring. This hobby for you is my preferred profession. Your hair dryer metaphor missed the side of a barn. An electric motor driven fan is no match for engine powered fan. I think you guys are so used to talking to each other and these cackameme ideas you’ve convinced yourselves of just how fragile these cars are, which clearly they arnt. Hippies building and restroying them and they still remain |
The fan produce that air flow only at maximum speed.
VW engines are not fragile but vw engineers designed it considering a correct maintenance: no missing parts, no modification, etc.
Engines run also if some parts are missing but.. how running? a lot of engines become rattly, noisy, weak, leaking, dirty, etc.
For me a "running" engine is not enough. Overheating, in vw engines, is almost ever due to missing parts.
30-40 years ago vw mechanics were "rude" (not the official VW assistance); but now informations are shared, and a lot of old stupid errors (like using 20/50 oil, missing parts on engine, or fixing and engine only to keep it "running" without care for other parameters) are deprecated and no more allowed. |
If you could put together a coherent statement with evidence that would be great.
Did VW build airplanes ? That’s the real question you need to ponder sipping Dopio con Panna in Triesté
https://www.thesamba.com/vw/forum/search.php?searc..._chars=200
Maybe look into the drag race history a lot graves are rolling their eyes at you right now 😂
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Over a million air cooled miles driven and 15,000+ cars serviced. |
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empi3
Samba Member
Joined: October 03, 2015
Posts: 347
Location: SW Wyoming
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| Posted: Tue May 17, 2022 10:09 am Post subject: Re: New doghouse fan shroud , what holes do I need to plug? |
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| VWFIXER wrote: |
| herbie1200 wrote: |
| VWFIXER wrote: |
The fan produces 20 cubic feet per second. More than can fit past heads and cylinders at the same rate.
Besides I’ve seen countless vws driving with heater hoses blown off or entirely gone. And no damage was occurring. This hobby for you is my preferred profession. Your hair dryer metaphor missed the side of a barn. An electric motor driven fan is no match for engine powered fan. I think you guys are so used to talking to each other and these cackameme ideas you’ve convinced yourselves of just how fragile these cars are, which clearly they arnt. Hippies building and restroying them and they still remain |
The fan produce that air flow only at maximum speed.
VW engines are not fragile but vw engineers designed it considering a correct maintenance: no missing parts, no modification, etc.
Engines run also if some parts are missing but.. how running? a lot of engines become rattly, noisy, weak, leaking, dirty, etc.
For me a "running" engine is not enough. Overheating, in vw engines, is almost ever due to missing parts.
30-40 years ago vw mechanics were "rude" (not the official VW assistance); but now informations are shared, and a lot of old stupid errors (like using 20/50 oil, missing parts on engine, or fixing and engine only to keep it "running" without care for other parameters) are deprecated and no more allowed. |
If you could put together a coherent statement with evidence that would be great.
Did VW build airplanes ? That’s the real question you need to ponder sipping Dopio con Panna in Triesté
https://www.thesamba.com/vw/forum/search.php?searc..._chars=200
Maybe look into the drag race history a lot graves are rolling their eyes at you right now 😂 |
Considering herbie1200 is from Italy I think his English is pretty "coherent" 
Steven
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1970 Beetle
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volksbugusa
Samba Member
Joined: May 19, 2003
Posts: 366
Location: BUNNELL , FLORIDA. 32110.
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| Posted: Fri May 26, 2023 4:18 pm Post subject: Re: New doghouse fan shroud , what holes do I need to plug? |
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Glenn..do you remember the size cap to plug the charcoal port? Thanks
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Matthew E D'Azzo
volksbugusa
https://www.facebook.com/groups/506947294919060 |
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Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 76904
Location: Sneaking up behind you
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| Posted: Fri May 26, 2023 4:22 pm Post subject: Re: New doghouse fan shroud , what holes do I need to plug? |
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| volksbugusa wrote: |
| Glenn..do you remember the size cap to plug the charcoal port? Thanks |
Genuine VW part number 030-133-335A, it's a cap for a A1 Golf brake booster. Should be 1/2"
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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
Member #1009
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