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[GMCnet] Distributor vacuum travel question [message #218196] Tue, 13 August 2013 14:26 Go to next message
Nelson Wright is currently offline  Nelson Wright   United States
Messages: 147
Registered: May 2004
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Senior Member
I've removed the vacuum module and when testing it, I can only get it
to travel 1/8 of an inch. With no vacuum, it rests in the center of
the travel. With full vacuum, it is at it's limit, which seems to be
about 1/8 of an inch. Does this sound standard? This is a 455
distributor I am working on.

Nelson Wright
'78 Royale Rear Bath currently in NC mountains
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Re: [GMCnet] Distributor vacuum travel question [message #218204 is a reply to message #218196] Tue, 13 August 2013 16:34 Go to previous message
James Hupy is currently offline  James Hupy   United States
Messages: 6806
Registered: May 2010
Karma: -62
Senior Member
It is not only about the amount of travel, but also about how much vacuum
it takes to move it at each position. Simple test is to use a mity vac,
hook up with a piece of hose, pump up the vacuum slowly while watching the
rod move. Also note if it leaks down. It shouldn't.
Jim Hupy
Salem, Or
On Aug 13, 2013 12:27 PM, "Nelson Wright" <f25ccapt@gmail.com> wrote:

> I've removed the vacuum module and when testing it, I can only get it
> to travel 1/8 of an inch. With no vacuum, it rests in the center of
> the travel. With full vacuum, it is at it's limit, which seems to be
> about 1/8 of an inch. Does this sound standard? This is a 455
> distributor I am working on.
>
> Nelson Wright
> '78 Royale Rear Bath currently in NC mountains
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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