Keith;
More food for thought: One of the engine builder references I have made
these comments:
People put too much oil in the pan, there's 3-5 Hp being lost there
There's too much junk in the oil pan, baffles just deflect the oil back into
the crank
Run a light weight oil for tight clearances, heavy oil for loose
clearances.
This is a oval engine builder and their engines are usually dry sumped and
the oil preheated.
Rich
Keith Turk wrote:
> Okay I thought I would share some of the answers to the Oiling System
> Problems I had last weekend.
>
> Light weight oil Whips up easier then Thicker Oil. My thought was that it
> would get back to the pan faster and provide HP.... and I think it would if
> you aren't whipping it up.
>
> Cavitation of the pump can occur due to many things... Oil aeriation due to
> whipping the Crankshaft through Oil...( to much Oil ) or if the Pan and
> Pickup don't have adequate clearence. Solid Baffles arn't as good as Wire
> mesh Baffles in the pan and can add to Oil getting whipped up.
>
> A Crank scrapper might help also....
>
> and Most importantly Proper Breathing of the Crank case... If you can
> imagine the bottom of this engine at Rpm there is a Mini tornado caused from
> the Crank and Rods spinning around... the Rings are allowing some blow by as
> are the valve guides. All this Pressure is building up and not giving the
> oil much of a chance to expell it's air. Hence the Oil contains it's air
> and the Oil Pumps it out at a decreased Pressure.
>
> Okay so Now to fix the Problem... I am going to swap back to a Pan, Pump and
> Pick up that I know work in this Car. and as I am doing this I am going to
> take some measurements and Make sure I had 1/4 to 3/8" clearence between the
> pan and pickup originally... Just to see if that was one of the problems.
>
> Guys Like John Beckett Run a Wet sump system successfully so I know it can
> be done... everything just has to be right!
>
> Keith
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