Subject: RE: loop pan as sump extender?
Author: Greg Bender
Date: May 6, 2005, 5:40 AM
Post ID: 1718822171
Hi Patrick,
Thanks for the information. Yes, I would need to extend the pickup the
same distance as the thickness of the spacer. But that piece doesn't
seem too complicated to fabricate, right?
I noticed someone was selling an Eldo in the MGNOC newsletter that has
both the Cycle Innovations sump extender and shift spring
fingers...neither of which I've seen in person.
I was also reading through the MGNOC Tips II book and came across a tip
you had sent in back in the late 70's / early 80's regarding your
installation of teh C.I. sump extender and an oil temperature gauge.
Patrick Hayes wrote:
Greg Bender wrote:
Well, yes. The concept of a sump extender is NOT to give you a larger sump capacity so that you can carry more oil. Instead, the idea is to lower the level of the sump oil and thus give you a larger crankchamber AIR capacity. The larger air capacity tolerates the pulsing air below the pistons better and has less tendency to blow past seals and gaskets. You're idea of a makeshift extender SOUNDS like a good one, but wait. On the loopframe, the oil pickup hangs down from the oil pump. You could lower the engine over the top of a 55 gallon drum and the only oil that will get fed to your motor will come from the top 2" or so. You normally use 3 quarts of oil in a loop. The oil pickup is just about 2" into the oil puddle. Lower the sump and you lower the top level of the oil puddle. Now your pickup is perhaps 1/2" into the oil puddle. Good way to suck air in a curve or bump! The Tonti frame motors are designed differently. They take their oil from the bottom of the sump through the castings. Thus, you could lower the sump 3' on those motors and the oil still comes from the bottom. Very easy to install sump extenders on these Tonti motors. I once owned one of the Cycle Innovations sump extenders. It included a spacer for the oil pickup so that the pickup on the loop was dropped the same distance as the drop in oil level. There were two different kits. One for the gear drive cam engine and one for the chain drive cam engine. They have different oil pump configurations. I sold mine (the gear drive style) with my Eldo to Greg Field. He sold it on elsewhere and I don't know its location now. The other chain drive unit belongs to a chum across town. Patrick Hayes Fremont CA |
Regards,
Greg Bender
1971 Ambassador
2000 Quota
http://www.thisoldtractor.com/gtbender
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Minnesota MGNOC website
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