Hi Phillip,
Try this sequence.
You say the cam rotates smoothly with no pump, so try mounting the pump
with the bolts loose enough so the pump will shift slightly easily.
Rotate the cam while watching the oil pump. If it moves around a bit,
likely the slot is a bit off center or the drive pin in the cam is. Try
holding the oil pump in different positions to see if the cam will rotate
smoothly. A slight shifting of the pump location might make a difference.
Paul A
FROM: "rob thomas", INTERNET:rob at thomasr.greatxscape.net
TO: "Philip S Jones", INTERNET:pkj@eskimo.com
CC: "spridgets", INTERNET:spridgets@autox.team.net
DATE: 6/9/00 4:59 AM
Re: Re: It's not a defect - it's a feature! (assembly questions)
----- Original Message -----
From Philip S Jones <pkj at eskimo.com>
To: <spridgets@autox.team.net>
Sent: 08 June 2000 07:13
Subject: It's not a defect - it's a feature! (assembly questions)
> Thanks is advance for your help and advice. I'm just pulling into the
back
> stretch on the 14-year disassembly/reassembly process of my '71 Midget.
>
> The new oil
> pump spins easily prior to installation (which is via two bolts via the
> stock unit's four), and the cam spins easily in it's bearing prior to oil
> pump installation. When they are both snug in their new homes, though,
the
> combination rotates only with difficulty; cyclic resistance with much
more
> difficulty in one direction than the other. The only other part in this
conundrum is
> the distributor drive; the combination of the cam in place with the
> distributor drive spins freely and only gets difficult when the oil pump
is
> installed.
Does the drive seat correctly all the way to the bottom of the hole that it
is meant to seat in? Is there any crap stuck behind it? Bent shaft?
Bearing plate on the camshaft front has been put on with one of the shims
designed to pack out the timing chain pulley left on it? Mounting collar
for the dizzy is trapping the drive shaft when it is bolted down due to the
teeth on the camshaft having been produced with too large an outer
diameter?
(NAW! Not very likely) Can you put 'engineers blue' dye onto the mating
faces of the cam/drive to see if they are not meshing correctly? I would
put my money on this being the area of the problem
There are different pumps for the small block / large block and also for
the
cooper engines. Cannot remember which is which. Wrong model of pump body?
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From "rob thomas" <rob at thomasr.greatxscape.net>
To: "Philip S Jones" <pkj@eskimo.com>
Cc: "spridgets" <spridgets@autox.team.net>
References: <004901bfcd77$179c8840$aa91480c@default>
<001a01bfd110$aa1d6bc0$bc0101c0@pkjdelllpt>
Subject: Re: It's not a defect - it's a feature! (assembly questions)
Date: Thu, 8 Jun 2000 20:21:14 +0100
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