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scavenge pump

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wise(at)txc.net.au
Guest

Posted: Sat Feb 27, 2010 1:33 pm Post subject: scavenge pump

G'Day all,

  

 2 of us have bought the Jim Kimballs shut-off valve  with micro switch which I shall wire into the starter button circuit and have  bought a very bright red panel light which will come on when the circuit is  interupted, ie, valve starts moving away from open position and micro switch and  the normally open set of contacts become closed and power up the  light.

 We have also bought the Jim Kimball scavenge pump  kit.

 Have any of you fitted the scavenge pump kit and  with what results and benifits.

 I geuss that what I am asking is, is it worth  fitting the scavenge pump.

 I am led to believe that by fitting the valve, the  scavenge pump is a waste of time.

 But surely the scavenge pump would clear the engine  of any remaining oil?

 Being a radial I would think that the pump is a  good idea?

  

 Thanks and cheers,

 Chris.

   [quote][b]

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mark.bitterlich(at)navy.m
Guest

Posted: Sat Feb 27, 2010 2:29 pm Post subject: scavenge pump

Chris, I like a scavenge pump, but in some cases you have to be careful how it is connected to the lower sump drain, assuming it is.  This drain is semi-fragile and if your new scavenge pump hose is not properly supported, it could put excess load on this fitting and break it.  

 

That said, this pump pretty much empties the lower sump.  Most oil that is left in the engine after shut down will drain into this sump.  Not to take away from the suggestion that we must ALWAYS pull our props through, using this sump will typically mean that very little or any oil will eventually end up in the lower cylinders.  After you shut down, use this pump, turn off your new oil shut-off valve... and any remaining oil will not be enough to fill up the sump.  

 

It's just another step in trying to keep oil out of the cylinders.  Maybe not as big a step as your new shut-off valve, but worth doing, especially if you already purchased it!  

 

Just be careful modifying the lower sump drain, if indeed this kit requires that, which I suspect it will.  The ones I have installed always have.  

 

Mark Bitterlich

 



________________________________



From: owner-yak-list-server(at)matronics.com on behalf of Chris Wise

Sent: Sat 2/27/2010 4:31 PM

To: yak-list(at)matronics.com

Subject: scavenge pump

G'Day all,

 

2 of us have bought the Jim Kimballs shut-off valve with micro switch which I shall wire into the starter button circuit and have bought a very bright red panel light which will come on when the circuit is interupted, ie, valve starts moving away from open position and micro switch and the normally open set of contacts become closed and power up the light.

We have also bought the Jim Kimball scavenge pump kit.

Have any of you fitted the scavenge pump kit and with what results and benifits.

I geuss that what I am asking is, is it worth fitting the scavenge pump.

I am led to believe that by fitting the valve, the scavenge pump is a waste of time.

But surely the scavenge pump would clear the engine of any remaining oil?

Being a radial I would think that the pump is a good idea?

 

Thanks and cheers,

Chris.

- The Matronics Yak-List Email Forum -

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?Yak-List

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