<VV> Tech question--pilot bushings / Answer from Ken Arnold

[Louis C. Armer,Jr.]

>
>----- Original Message -----
>From: <mailto:carmerjr at mindspring.com>Louis C. Armer,Jr.
>To: <mailto:kenvair at comcast.net>karnold
>Sent: Sunday, February 12, 2006 10:38 PM
>Subject: Re: <VV> Tech question--pilot bushings
>
>At 07:18 PM 2/12/2006, you wrote:
>>Chuck,
>>
>>Because of the low quality of the pilot bushings that I was 
>>installing and having them squeal after a few thousand miles and 
>>noting that GM had gone to a needle bearing unit in their trucks I 
>>started using the needle bearing type in my Corvairs with no more 
>>problems. I was purchasing the GM unit and had them turned down to 
>>the Vair O.D. I think some of the Corvair venders offer this in the 
>>correct diameter now.
>>
>>Ken
>>----- Original Message -----
>>From: <mailto:carmerjr at mindspring.com>Louis C. Armer,Jr.
>>To: <mailto:abkru at bellsouth.net>abkru at bellsouth.net
>>Cc: <mailto:kenvair at comcast.net>karnold ; 
>><mailto:tedsauto at bellsouth.net>tedsauto at bellsouth.net ; 
>><mailto:w4wdh at earthlink.net>w4wdh at earthlink.net
>>Sent: Sunday, February 12, 2006 6:38 PM
>>Subject: Fwd: <VV> Tech question--pilot bushings
>>Alright Gurus, Do you have any opinions on this observation?
>>
>>Chuckster
>>///////////////////////////////////////////////////////////////////////////////////////////////
>>>I have been rebuilding engines and replacing clutches for years. But each
>>>time I removed the old pilot bushing and installed a new one , I 
>>>did so without
>>>actually INSPECTING the new  bushing.
>>>
>>>But this time I did, and got a surprise. The NOS GM bushing looks 
>>>to be  made
>>>of solid bronze. The surface under a 20X loupe looks to have some
>>>inperfections, BUT it sure is NOT made of sintered bronze as I 
>>>understand  sintering.
>>>Sintering as I understand it, is the forcing of small balls of 
>>>a  material to
>>>adhere together comprising a structure or object. This has no 
>>>small  balls of
>>>material. And it is not porous either.
>>>
>>>Several other NOS bushings are the same. It would look like it's nearly
>>>impossible to force oil thru the bushing as has been described by 
>>>others as a
>>>method of oiling it. Also just soaking the bushing in oil will 
>>>provide good
>>>lubrication, but I can't see how the oil could posibly penetrate 
>>>the  bushing
>>>proper.
>>>
>>>What are the experiences of others? Does anyone have any bushings to check
>>>out and compare with mine? Any thoughts or comments?
>>>
>>>Regards,
>>>Bob Helt
>>//////////////////////////////////////////////////////////////////////////////////////////////////////// 
>>
>
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>
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