<VV> Clutch Pilot Bushing Question

[Mark Durham]

Yep, I started it all and should have clarified. Sorry guys
Mark Durham

On Mon, Nov 23, 2009 at 8:06 AM, airvair at earthlink.net <
airvair at earthlink.net> wrote:

>  That's the difference. You're using special "grease", not common axle
> grease, as was proposed in others' previous posts.
>
> -Mark
>
>
>
>  ----- Original Message -----
> *From:* Mark Durham <62vair at gmail.com>
>   *To: *airvair at earthlink.net
> *Cc: *J R Read_HML <hmlinc at sbcglobal.net>; Chris & Bill Strickland<lechevrier at earthlink.net>;
> virtualvairs at corvair.org
> *Sent:* 11/23/2009 10:49:29 AM
> *Subject:* Re: Clutch Pilot Bushing Question
>
> The whole point is that the oillite bushing when warm does weep enough
> lubricant to prevent fast wear. The high temp lubricant I used is a aircraft
> quality grease that will still be lubricating when I take the thing apart in
> 80K miles or so. Its designed use is in high heat magneto bearings on
> aircraft engines. Oillite bearings come prelubed, also, so they too are
> designed to last the life of a clutch job and preoiling helps prevent
> galling on that first startup until the bearing is warm and weeps oil on its
> own.
> Mark Durham
>
> On Mon, Nov 23, 2009 at 6:30 AM, airvair at earthlink.net <
> airvair at earthlink.net> wrote:
>
>> The reason grease is not recommended is because it clogs the pores of the
>> oilite bronze bushing. Oilite is designed to weep oil onto the needed
>> surface, and needs those pores to do so. Grease simply won't flow like oil
>> will, at any temperature. So greasing an oilite bearing simply defeats the
>> oilite bearing's purpose.
>>
>> -Mark
>>
>> > [Original Message]
>> > From: J R Read_HML <hmlinc at sbcglobal.net>
>> > Subject: Re: <VV> Clutch Pilot Bushing Question
>> >
>> > I've always been told to use oil, not grease.  Don't know why.  Grease
>> gets
>> > to thick in cold weather?
>> > Later, JR
>> >
>> > ----- Original Message -----
>> > From: "Mark Durham" <62vair at gmail.com>
>> > Subject: Re: <VV> Clutch Pilot Bushing Question
>> >
>>  > > Bill, a oillite bushing is prelubed, but yes, you would want to
>> prelube
>> it
>> > > with something. I just did my clutch and flywheel in the 62 coupe and
>> when
>> > > I
>> > > replaced the bushing I lubed it with a high temp heavy grease which
>> stays
>> > > in
>> > > place better than oil, but oil will work just fine. Just be careful
>> you
>> do
>> > > not put so much in that it slings up on the clutch plate. The bushing
>> and
>> > > shaft are turning at the same speed, and only when you are shifting
>> (or
>> at
>> > > a
>> > > stop light with the clutch pushed in) they are at different speeds
>> where
>> > > the
>> > > lubrication is important.
>> > > I don't have a answer to the other question. I've been working on cars
>> > > since
>> > > 1965 and I've only seen oillite bushings in the cranks.
>> > > Mark Durham
>> > >
>>  > > On Fri, Nov 20, 2009 at 3:45 PM, Chris & Bill Strickland <
>> > > lechevrier at earthlink.net> wrote:
>> > >
>> > >> I would gather that "all" replacement pilot bushings (except the iron
>> > >> and roller ones) are the Oilite sintered bronze style, requiring an
>> oil
>> > >> bath prelube -- were original oem bushings just machined brass?
>> > >>
>> > >> Thanks,
>> > >>
>> > >> Bill Strickland
>> > >>
>>
>>
>