Isn't it true that the large projection on the pump is an unmachined cast
surface, and therefore subject to whatever casting inaccuracies Ford specs into
their products? Remember that the Tiger water pump has a standard hub, but
pressed on backwards...
Whatever water pump I have, has a conventional hub, so that I can use standard
Ford pulleys and fans.
Theo
Kathy and Erich Coiner wrote:
> See below
> ----- Original Message -----
> From: <DJoh797014@aol.com>
> To: <kathy.coiner@gte.net>
> Cc: <tigers@autox.team.net>
> Sent: Saturday, April 20, 2002 8:21 PM
> Subject: Re: Water pump hub sizes
>
> > Erich
> >
> > Look someplace else for your runout problem
>
> Not necessary, I can watch the water pump pulley rise and fall.
> I can snug the bolts and tap the pulley with a rubber hammer to get it
> running concentrically.
> Note, the pulley does not wobble is runs eccentrically.
>
> > Remember these are ordinary production engines.
> > The water pump shaft is about 1 inch + or -
> > and the pulley hub hole is 1 inch + or -.
> > As long as the hub fits over the shaft you are
> > OK. The four bolts mounting the pulley to
> > the water pump have more tolerance that
> > what you list.
> Correct, the bolts do not provide any alignment. That should be taken care
> of by the hub projection and the center hole of the pulley. The bolts just
> keep things tight.
>
> >
> > Tighten the four bolts and run it. If you get
> > a vibration odds are its not a problem in
> > the shaft or pulley.
> I don't have a vibration problem, My belt tension is just oscillating
> because the pulley is not centered.
>
> I would suspect the
> > balance of the fan. I've seen Tigers with
> > loose pulleys that have over 100K and are
> > running the original water pump. Mine
> > had 70K on the original pump and pulley
> > until my son hit the light pole.
> >
> > Our cars are not swiss watches. Things
> > don't have to be perfect.
> True, But they are a lot more accurate than cheap Red Chinese machine tools.
>
> Erich
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