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What is this part? Air intake boot?
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mcduckson
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PostPosted: Thu Feb 05, 2015 11:58 am    Post subject: What is this part? Air intake boot? Reply with quote

1980 aircooled vanagon. What is this part and where can I get a new one? I think it's called an air intake elbow boot (after doing some research). Is it part of the heating/AC system or is it a necessary part of the engine system? Mine is shredded. I was thinking about just getting a hose replacement of some kind. I haven't found a rubber piece but the metal vent hose used for dryers seems to fit. Is there any reason I shouldn't use a metal one. Or is there any reason a rubber one would be better?
Thanks!
John

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MarkWard
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PostPosted: Thu Feb 05, 2015 12:13 pm    Post subject: Reply with quote

It connects the squirrel cage blower on the alternator to the snorkle. The squirrel cage is an assist to the heater. Perhaps they wanted to ensure no fumes from the engine compartment were drawn into the passenger compartment. Part number is 070 256 099 for the boot. Probably your idea of an alternate would work. Look at summit racing for silicone boots.
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1990 Vanagon Camper Syncro conversion.
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mcduckson
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PostPosted: Thu Feb 05, 2015 12:48 pm    Post subject: Reply with quote

Hi and thanks rsxsr!

So this boot is to assist the heater? I've been reading some other information that call this the boot a cold air intake for the alternator or something to cool the alternator. I see that it attaches directly to the body of the van from the alternator but I don't understand where it goes next.

I'm having a difficult time finding information on this part. The part number on the boot is 070 256 099.

Thanks
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danfromsyr
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PostPosted: Thu Feb 05, 2015 12:51 pm    Post subject: Reply with quote

that boot allows the heater supply fan on the Alternator to suck clean air from the side scoop and not draw in engine compartment fumes.

if your heat is bypassed and dumps out by the transmission (instead of blowing heat into the cabin) then it's not as necessary

the plastic duct/tube from the alt to the heaters IS necessary to help keep the exhaust from soaking into the heads and loosing a valve/seat.
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MarkWard
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PostPosted: Thu Feb 05, 2015 12:55 pm    Post subject: Reply with quote

On an aircooled vanagon, there should be a squirrel cage blower bolted to the alternator pulley with a black plastic shroud around it. The boot attaches to the shroud. The shroud has two ducts that go to both heater boxes. Busses used and electric blower. It is possible that it has been discarded at some point during an alternator or engine change.

If you are not concerned about decent heat, you can run the engine and not worry too much. Here is what it should look like.

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mcduckson
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PostPosted: Thu Feb 05, 2015 1:27 pm    Post subject: Reply with quote

Thank you for the explanation. I know understand it better. I found more info in the Grab Bag section of the John Muir book on how that system works and it looks like at some point in the near future I'll be working through checking that system.

....so that explains why I have no heat in my car. . . .
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MarkWard
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PostPosted: Thu Feb 05, 2015 1:30 pm    Post subject: Reply with quote

Quote:
....so that explains why I have no heat in my car. . . .


You have no heat because it is winter and you have an aircooled vanagon. Smile Even knew they were marginal in Florida.
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torbot
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PostPosted: Sat Sep 26, 2015 7:37 pm    Post subject: Re: What is this part? Air intake boot? Reply with quote

mcduckson wrote:
1980 aircooled vanagon. What is this part and where can I get a new one? I think it's called an air intake elbow boot (after doing some research). Is it part of the heating/AC system or is it a necessary part of the engine system? Mine is shredded. I was thinking about just getting a hose replacement of some kind. I haven't found a rubber piece but the metal vent hose used for dryers seems to fit. Is there any reason I shouldn't use a metal one. Or is there any reason a rubber one would be better?
Thanks!
John


Did you ever end up replacing this or finding an alternative fix? while replacing my alternator awhile back, I spent... a LONG time trying to get this piece back on and ended up ripping it anyway. New Alt was defective, so I'm replacing it again and want to try my luck with a new boot (or an alternative).

Thanks!
Tor
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dreaming_of_traveling
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PostPosted: Mon Jan 20, 2020 10:50 pm    Post subject: Re: What is this part? Air intake boot? Reply with quote

I'm also looking for this now. No one had any luck?
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Wildthings
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PostPosted: Tue Jan 21, 2020 12:23 am    Post subject: Re: What is this part? Air intake boot? Reply with quote

The wire reinforced silicone duct from Aircraft Spruce should work. It is available in many sizes.
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