<VV> [fastvair] Distributor end play

[Michael Kovacs]

Fact. Just watch the rotor move as the distributor shaft is engaging the gear during installation.

 However the shaft should rise up during the engine run. How much per RPM? Don't know. Chevy engineers figured it out 50 years ago.
 MIKE KOVACS 




________________________________
From: Ken Hand <VairMech at aol.com>
To: fastvair at yahoogroups.com
Sent: Wednesday, September 30, 2009 11:35:36 AM
Subject: Re: [fastvair] Distributor end play

  
As the shaft moves up and down it is on two helical gears. Moving up and down does change timing. I've seen as much as 10 degrees.

Ken Hand
248-613-8586
www.corvairmechanic .com

-----Original Message-----
From: JVHRoberts at aol. com
To: fastvair at yahoogroup s.com
Sent: Wed, Sep 30, 2009 11:18 am
Subject: Re: [fastvair] Distributor end play

Actually, during operation, the shaft is thrust upward against the thrust 
washer, and by non trivial forces. The shaft, after all, does drive the oil 
pump. As long as the shaft doesn't move upward so much it crashes the rotor or 
other mechanical problems, the end play should have no effect on timing 
stability. 

John Roberts

-----Original Message-----
From: Ken Hand <VairMech at aol. com>
To: fastvair at yahoogroup s.com
Sent: Wed, Sep 30, 2009 11:15 am
Subject: Re: [fastvair] Distributor end play

It is sort of critical if you?have to little clearance. The shaft will not 
expand near what the housing will and if the clearance is to close then the 
shaft could bind. But .020-.030 is probably a good number to shoot for. 
Excessive clearance will give you erratic timing.

Ken Hand

248-613-8586

www.corvairmechanic .com

-----Original Message-----

From: Tom Stark <64vair at absolutetops .com>

To: fastvair at yahoogroup s.com

Sent: Tue, Sep 29, 2009 9:19 pm

Subject: Re: [fastvair] Distributor end play

I always set mine at around .010 to .020. It is not real critical, you just

want ti loose enough that it does not bind, and tight enough that it does

not do what yours is doing now!

Tom

On Tue, Sep 29, 2009 at 6:43 PM, <aeroned at aol. com> wrote:

>

>

> How much end play, up and down, should there be in the distributor shaft?

>

> I seem to recall it's very little, certainly less that the quarter inch (or

>

> more) that mine has now. The rotor is hitting the top of the cap contacts

> at higher RPM.

>

> Thanks,

> Ned

>

> [Non-text portions of this message have been removed]

>

> 

>

[Non-text portions of this message have been removed]

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