<VV> Oil pump, it just doesn't feel right

Harry Yarnell hyarnell1 at earthlink.net
Mon Oct 24 11:14:25 EDT 2005

Sounds perfectly normal.

Harry Yarnell
Perryman Garage and Orphanage
hyarnell1 at earthlink.net
----- Original Message ----- 
From: "Cepak, Tom A" <tom.a.cepak at lmco.com>
To: <virtualvairs at corvair.org>
Sent: Monday, October 24, 2005 10:24 AM
Subject: <VV> Oil pump, it just doesn't feel right

>I installed a new oil pump by following the instructions in the shop
> manual, and by using information I pulled from the archives.  I measured
> with a feeler gauge in several locations, used a few gaskets, and set
> the clearance according to the shop manual.  I could be completely out
> of my mind thinking something doesn't feel right, but I thought I'd ask.
> When I insert a distributor shaft (distributor housing, gears, etc. are
> removed) down the hole and into the slot of the oil pump, I can turn the
> oil pump by hand easily.  I added oil to the engine and when I turn the
> distributor shaft clockwise by hand, I can feel the gears in the oil
> pump clicking together.  I attached my cordless drill to this shaft and
> ran it for 30 seconds (clockwise).  I could really hear the oil pump and
> I could feel a little vibration in the cordless drill.  I'm guessing
> that engine noise would typically dround out the sound of an oil pump,
> but it seems kind of loud to me.  When I removed the cordless drill, the
> distributor shaft started rotating counter-clockwise slowly, like it had
> a spring attached and was unwinding itself.  I'm guessing this was
> caused by oil pressure pushing oil back into the pump?  Does this sound
> normal to you guys?  Do I need to drain the oil, disassemble the oil
> pump and start over?
> Thanks,
> Tom
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