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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50334
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Posted: Wed Sep 30, 2020 6:30 pm Post subject: Re: Late 70s alternator air boot question |
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Has anyone ordered one of these yet to see what they are actually stocking? |
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ivwshane Samba Member
Joined: May 19, 2011 Posts: 1920 Location: Sacramento ca
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Posted: Wed Sep 30, 2020 5:58 pm Post subject: Re: Late 70s alternator air boot question |
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It was a little loose in my opinion. I didn’t have issues with the orientation of it. _________________ 77 westy 2.0 FI
69 ghia coup 1600dp
70 single cab |
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SGKent Samba Member
Joined: October 30, 2007 Posts: 41031 Location: Citrus Heights CA (Near Sacramento)
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Posted: Wed Sep 30, 2020 4:21 pm Post subject: Re: Late 70s alternator air boot question |
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ivwshane wrote: |
I got mine from buslab.com, it’s not made by vw but it did fit. |
was it a good snug fit or did you feel you had to manipulate it? The factory one was like putting on a custom fitted glove. It sat in the shroud perfectly, aligned with the alternator when it was rotated into it, and was perfect in every way. The B one I had used before was really loose and bordered on falling out. Over time it set with heat into the correct shape but didn't fit right when new.
Here are the photos how the correct one fit:
_________________ “Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
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ivwshane Samba Member
Joined: May 19, 2011 Posts: 1920 Location: Sacramento ca
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Posted: Wed Sep 30, 2020 4:09 pm Post subject: Re: Late 70s alternator air boot question |
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I got mine from buslab.com, it’s not made by vw but it did fit. _________________ 77 westy 2.0 FI
69 ghia coup 1600dp
70 single cab |
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SGKent Samba Member
Joined: October 30, 2007 Posts: 41031 Location: Citrus Heights CA (Near Sacramento)
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Posted: Wed Sep 30, 2020 4:04 pm Post subject: Re: Late 70s alternator air boot question |
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Wildthings wrote: |
SGKent wrote: |
just looking for an update. Just used the 021-903-655D one I had on the engine build I am working on, and it fit the shroud and alternator perfectly. It came from VW as documented earlier in this thread. The engine is a 1977 GD w/ 55 amp alternator. Has anyone found a source that has the correct part. I'd like a spare.
SK |
I believe there is mention of one earlier in this thread. I obtained a NOS one and was thinking of having a few produced, but saw that someone was already making them so put my plan on hold. |
Need confirmation where they bought it, and that it fit properly. There are lots out there that are mis labeled. AutoAtlanta for example has one but the description says 70 amp... There have also been some others with D on them that were actually repops of a B. _________________ “Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50334
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Posted: Wed Sep 30, 2020 1:53 pm Post subject: Re: Late 70s alternator air boot question |
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SGKent wrote: |
just looking for an update. Just used the 021-903-655D one I had on the engine build I am working on, and it fit the shroud and alternator perfectly. It came from VW as documented earlier in this thread. The engine is a 1977 GD w/ 55 amp alternator. Has anyone found a source that has the correct part. I'd like a spare.
SK |
I believe there is mention of one earlier in this thread. I obtained a NOS one and was thinking of having a few produced, but saw that someone was already making them so put my plan on hold. |
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SGKent Samba Member
Joined: October 30, 2007 Posts: 41031 Location: Citrus Heights CA (Near Sacramento)
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Posted: Wed Sep 30, 2020 1:33 pm Post subject: Re: Late 70s alternator air boot question |
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just looking for an update. Just used the 021-903-655D one I had on the engine build I am working on, and it fit the shroud and alternator perfectly. It came from VW as documented earlier in this thread. The engine is a 1977 GD w/ 55 amp alternator. Has anyone found a source that has the correct part. I'd like a spare.
SK _________________ “Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
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SGKent Samba Member
Joined: October 30, 2007 Posts: 41031 Location: Citrus Heights CA (Near Sacramento)
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Posted: Fri May 29, 2020 8:29 am Post subject: Re: Late 70s alternator air boot question |
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All I know is that this one came from VW thru Paruzzi a couple years ago. I tried it this morning on my late GD shroud and it fits perfect on the shroud. Can't test the alternator side yet. The alternator is on its way to my friend Telford in San Diego so it can be tested for waveform since I replaced the brushes and bearings. It was a genuine Bosch rebuild that came from Bus Depot in 2009 and started squeaking on the last trip to Yosemite with only about 2500 - 3000 miles on it. Not Ron's fault. The bearings in this were an off brand Chinese set, so I replaced them with non-chinese SKF and FAG bearings plus added new brushes from NAPA. I tried test fitting the boot to the GD shroud and it is tight, fits just right.
I do not believe VW has anymore of these. Also, in 2009 I used the model boot that was too small for the GD opening but barely stayed in it. When I removed the shroud last week, with age, heat, and the internal expansion ring, it had expanded to be tight in the shroud. I hope this helps. FWIW I offered to numerous people to use this one from VW to make a mold but now time is up and I am going to use it. I do hope the community eventually gets this sorted out. I think when this all began I had to return about 10 - 15 mislabeled ones to different vendors. If you have a late shroud, you want the D version. See part number on the part itself in the photos below.
_________________ “Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
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Salders Samba Member
Joined: March 11, 2020 Posts: 6 Location: California
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Posted: Fri May 29, 2020 7:17 am Post subject: Re: Late 70s alternator air boot question |
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Auto Atlanta remakes them so the part number isn't molded on the boot but from the picture, it looks like the right one.
http://www.autoatlanta.com/results.php?partnumber2=021%20903%20655%20D
021 903 655 D
If anyone orders it please let me know if it's actually a D part |
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50334
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Posted: Tue May 26, 2020 7:40 am Post subject: Re: Late 70s alternator air boot question |
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Jetfxr69 wrote: |
SGKent wrote: |
Ron at BusDepot. This part gives people fits because many repros are mislabeled. I bought (and returned) six to ten of them until I found an original from VW that fit. We aren't talking small differences.
The general consensus is:
021-903-655 B small hole in fan housing, early T4 55A. Falls out of late engine shroud.
021-903-655 D big hole in fan housing such as late T4, GD, GE engines
022-903-655 70 Amp alternator
I'll take photos soon of a GD shroud when my shroud is off. Ivwshane is correct. |
Anyone have any luck sourcing the correct “D” boot yet? Ron at Bus Depot said his latest arrived samples were still incorrect from vendor. Have some old ones that will be re-used, unless someone has ordered and actually received the correct one for the later bigger hole cooling shouds. |
I have what I believe is a NOS "D" boot sitting in front of me. Certainly willing to let someone use it as a pattern. |
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Jetfxr69 Samba Member
Joined: December 28, 2018 Posts: 1293 Location: White mtns nh
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Posted: Tue May 26, 2020 6:07 am Post subject: Re: Late 70s alternator air boot question |
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SGKent wrote: |
Ron at BusDepot. This part gives people fits because many repros are mislabeled. I bought (and returned) six to ten of them until I found an original from VW that fit. We aren't talking small differences.
The general consensus is:
021-903-655 B small hole in fan housing, early T4 55A. Falls out of late engine shroud.
021-903-655 D big hole in fan housing such as late T4, GD, GE engines
022-903-655 70 Amp alternator
I'll take photos soon of a GD shroud when my shroud is off. Ivwshane is correct. |
Anyone have any luck sourcing the correct “D” boot yet? Ron at Bus Depot said his latest arrived samples were still incorrect from vendor. Have some old ones that will be re-used, unless someone has ordered and actually received the correct one for the later bigger hole cooling shouds. _________________ You can't be a real country unless you have a beer and an airline. It helps if you have some kind of a football team, or some nuclear weapons, but at the very least you need a beer. Zappa
‘77 westy Seamus
‘76 tintop Crusher
‘77 westy The Judge
‘72 tintop bastard westy Hudson |
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ivwshane Samba Member
Joined: May 19, 2011 Posts: 1920 Location: Sacramento ca
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Posted: Wed Feb 12, 2020 5:26 pm Post subject: Re: Late 70s alternator air boot question |
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So I just got the boot from 914rubber and it is incorrect. There are no part numbers on it but it matches the description of a “B” part.
Interestingly, my existing part is labeled 021903655B and looks completely different.
Note that my existing “B” has a lip on the fan shroud side for a spring clip* (I don’t know if that is the correct name for it) and the new part does not.
_________________ 77 westy 2.0 FI
69 ghia coup 1600dp
70 single cab |
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Busdepot Samba Member
Joined: March 24, 2004 Posts: 1309
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Posted: Wed Feb 12, 2020 4:11 pm Post subject: Re: Late 70s alternator air boot question |
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Thanks, if I get one that is purported to be correct and doesn't look like the other two, I'll take you up on that offer. _________________ - Ron Salmon
The Bus Depot
www.busdepot.com |
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sjbartnik Samba Member
Joined: September 01, 2011 Posts: 5994 Location: Brooklyn
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Posted: Wed Feb 12, 2020 3:48 pm Post subject: Re: Late 70s alternator air boot question |
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Ron - I still have the D boot (genuine VW part) I bought from Bus Depot 20 years ago in my possession. I could take measurements if you tell me what you wanna know. Presumably the diameter of the fan housing side based on what I'm reading in this thread. _________________ 1965 Volkswagen 1500 Variant S
2000 Kawasaki W650 |
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ivwshane Samba Member
Joined: May 19, 2011 Posts: 1920 Location: Sacramento ca
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Posted: Wed Feb 12, 2020 3:42 pm Post subject: Re: Late 70s alternator air boot question |
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Busdepot wrote: |
Thanks for the clarification.
Looks like this is an issue of a bad part number cross-reference from our supplier. It seems the one we list as a 655D is in fact the 70 amp one like our site says. So our website description is correct, but our part number reference is wrong, it should be an 022903655. I will see if we can get an actual 655D and if so bring in a sample to compare to the other two versions we have. |
That is correct.
Good luck! _________________ 77 westy 2.0 FI
69 ghia coup 1600dp
70 single cab |
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Busdepot Samba Member
Joined: March 24, 2004 Posts: 1309
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Posted: Wed Feb 12, 2020 3:28 pm Post subject: Re: Late 70s alternator air boot question |
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Thanks for the clarification.
Looks like this is an issue of a bad part number cross-reference from our supplier. It seems the one we list as a 655D is in fact the 70 amp one like our site says. So our website description is correct, but our part number reference is wrong, it should be an 022903655. I will see if we can get an actual 655D and if so bring in a sample to compare to the other two versions we have. _________________ - Ron Salmon
The Bus Depot
www.busdepot.com |
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SGKent Samba Member
Joined: October 30, 2007 Posts: 41031 Location: Citrus Heights CA (Near Sacramento)
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Posted: Wed Feb 12, 2020 1:59 pm Post subject: Re: Late 70s alternator air boot question |
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Ron at BusDepot. This part gives people fits because many repros are mislabeled. I bought (and returned) six to ten of them until I found an original from VW that fit. We aren't talking small differences.
The general consensus is:
021-903-655 B small hole in fan housing, early T4 55A. Falls out of late engine shroud.
021-903-655 D big hole in fan housing such as late T4, GD, GE engines
022-903-655 70 Amp alternator
I'll take photos soon of a GD shroud when my shroud is off. Ivwshane is correct. _________________ “Most people don’t know what they’re doing, and a lot of them are really good at it.” - George Carlin |
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ivwshane Samba Member
Joined: May 19, 2011 Posts: 1920 Location: Sacramento ca
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Posted: Wed Feb 12, 2020 1:43 pm Post subject: Re: Late 70s alternator air boot question |
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Busdepot wrote: |
The part number ending in B is for standard 55 amp alternators. The one ending in D is for high-output 75 amp ones (generally found on Buses that were factory equipped with a gas heater or A/C). As I recall the B is oval on one end whereas the D is rounded on both ends. We have both versions.
https://www.busdepot.com/catalogsearch/result/?q=0...sort_order |
That is incorrect. The B part # has a port that fits a smaller hole on the fan shroud and has a D shaped port to fit the 55amp alternator cover.
The D part # has a port that fits a larger diameter fan shroud hole and a port that is D shaped that fits the 55amp alternator.
The part # with no letter suffix is for the 70amp alternator. It features a larger diameter on the fan housing side like the D part but it has a circular port for 70amp alternator cooling port.
They are not interchangeable and contrary to what almost every website states, none of the parts replaced anything.
I would hope you would update your 70amp boot listing to reflect these facts. _________________ 77 westy 2.0 FI
69 ghia coup 1600dp
70 single cab
Last edited by ivwshane on Wed Feb 12, 2020 2:19 pm; edited 1 time in total |
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Busdepot Samba Member
Joined: March 24, 2004 Posts: 1309
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Posted: Wed Feb 12, 2020 12:28 pm Post subject: Re: Late 70s alternator air boot question |
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The part number ending in B is for standard 55 amp alternators. The one ending in D is for high-output 70 amp ones (generally found on Buses that were factory equipped with a gas heater or A/C). As I recall the B is oval on one end whereas the D is rounded on both ends. We have both versions.
https://www.busdepot.com/catalogsearch/result/?q=0...sort_order _________________ - Ron Salmon
The Bus Depot
www.busdepot.com
Last edited by Busdepot on Wed Feb 12, 2020 3:23 pm; edited 1 time in total |
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ivwshane Samba Member
Joined: May 19, 2011 Posts: 1920 Location: Sacramento ca
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Posted: Sat Feb 08, 2020 1:03 am Post subject: Re: Late 70s alternator air boot question |
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I'm a little concerned though as the bottom of the page lists the B part. _________________ 77 westy 2.0 FI
69 ghia coup 1600dp
70 single cab |
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