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Hatracks Samba Member

Joined: July 10, 2016 Posts: 670 Location: Renton, WA
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Posted: Sat Apr 28, 2018 12:29 pm Post subject: Whine at high rpm |
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When i come out of throttle I hear a bit of a whine as the car unwinds that goes away as it comes under 2500ish or when i get back in throttle. The fan feels clear and when you spin the fan generator by hand it feels file.
I havent done the rear wheel bearings yet and have the parts on order and at the same time I could pull the generator and put new bearings in it (looks like if i pull the generator stand it should slide right out. Anything else I should check? _________________ 73 Super Build |
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Cusser Samba Member

Joined: October 02, 2006 Posts: 32993 Location: Hot Arizona
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Posted: Sat Apr 28, 2018 3:12 pm Post subject: Re: Whine at high rpm |
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Hatracks wrote: |
I could pull the generator and put new bearings in it (looks like if i pull the generator stand it should slide right out. |
Not quite as easy as that; I'd recommend to pull the engine to remove the generator. On the other hand, being experienced - I have removed the fan shrouds/generators on both my 1970 and 1971 without dropping the engine (one must remove the engine lid, mark its position first).
And I have replaced generator bearings, but over 35 years ago. _________________ 1970 VW (owned since 1972) and 1971 VW Convertible (owned since 1976), second owner of each. The '71 now has the 1835 engine, swapped from the '70. Second owner of each. 1988 Mazda B2200 truck, 1998 Frontier, 2014 Yukon, 2004 Frontier King Cab. All manual transmission except for the Yukon. http://www.thesamba.com/vw/forum/album_page.php?pic_id=335294 http://www.thesamba.com/vw/forum/album_page.php?pic_id=335297 |
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sawed off Samba Member
Joined: September 15, 2016 Posts: 428 Location: Idaho
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Posted: Sat Apr 28, 2018 5:19 pm Post subject: Re: Whine at high rpm |
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transmission full? |
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Hatracks Samba Member

Joined: July 10, 2016 Posts: 670 Location: Renton, WA
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Posted: Sun Apr 29, 2018 7:40 am Post subject: Re: Whine at high rpm |
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sawed off wrote: |
transmission full? |
I did the transmission fluid last year and it doesnt leak (i keep coardboard under the car) I can check and make sure its full though. _________________ 73 Super Build |
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VW_Jimbo  Samba Member

Joined: May 22, 2016 Posts: 11093 Location: Huntington Beach, CA
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Posted: Sun Apr 29, 2018 7:59 am Post subject: Re: Whine at high rpm |
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Will it make the noise sitting in the garage. If so, take the belt off of it and rev it up to 3000 grand, let the throttle go and listen. You only have a minute or so to run it like that, but if the noise goes away, it is either the generator bearings or a broken fan hub. If the noise is still there, get the belt back on and then drain the tranny. See what color the oil is and what is in it (fine metal particulate)? _________________ Jimbo
There is never enough time to do it right the first time, but all the time necessary the second time!
TDCTDI wrote: |
Basically, a whole bunch of fuckery to achieve a look. |
67rustavenger wrote: |
GFY's Xevin and VW_Jimbo!  |
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Hatracks Samba Member

Joined: July 10, 2016 Posts: 670 Location: Renton, WA
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Posted: Mon Apr 30, 2018 9:20 am Post subject: Re: Whine at high rpm |
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VW_Jimbo wrote: |
Will it make the noise sitting in the garage. If so, take the belt off of it and rev it up to 3000 grand, let the throttle go and listen. You only have a minute or so to run it like that, but if the noise goes away, it is either the generator bearings or a broken fan hub. If the noise is still there, get the belt back on and then drain the tranny. See what color the oil is and what is in it (fine metal particulate)? |
I have never heard it make it in the garage but never really listened for it either. I will give it a shot, when I drained the transmission fluid last year it was fairly clean but something could of gone wrong before then.
It also could just be this is the way these cars sound, its not really that high pitch of a whine but this is the first air cooled car ive driven and all of my other junk is V8's or inline 6's so maybe its normal  _________________ 73 Super Build |
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Hatracks Samba Member

Joined: July 10, 2016 Posts: 670 Location: Renton, WA
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Posted: Thu May 03, 2018 6:34 am Post subject: Re: Whine at high rpm |
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So I had a bunch of freeplay in the clutch that I kept forgetting to adjust. Last night i finally remembered to adjust it and this morning it seems like the whine went away. _________________ 73 Super Build |
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Randy in Maine Samba Member

Joined: August 03, 2003 Posts: 34890 Location: The Beach
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Posted: Thu May 03, 2018 6:36 am Post subject: Re: Whine at high rpm |
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Have you ever put a little bit of Bosch distributor grease at the points rubbing block inside the distributor cap? |
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VW_Jimbo  Samba Member

Joined: May 22, 2016 Posts: 11093 Location: Huntington Beach, CA
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Posted: Thu May 03, 2018 7:13 am Post subject: Re: Whine at high rpm |
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Hatracks wrote: |
So I had a bunch of freeplay in the clutch that I kept forgetting to adjust. Last night i finally remembered to adjust it and this morning it seems like the whine went away. |
Glad you got it! _________________ Jimbo
There is never enough time to do it right the first time, but all the time necessary the second time!
TDCTDI wrote: |
Basically, a whole bunch of fuckery to achieve a look. |
67rustavenger wrote: |
GFY's Xevin and VW_Jimbo!  |
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