REFLECTOR: excessive oil overboard

[Scott Derrick]

Joel,

this TSIO520 in a Velocity?

Scott

Joel Smith wrote:

> What is excessive?
>
> How do you operate your normalized 550? I am not to familiar with the 
> normalized 550.
>
> I have  a TIO-520R. I think it has excessive oil overboard, but to 
> give you an idea, I occassionly have to add a quart in 25-30 hrs, then 
> I change it. I have met folks that think this is good. It holds 10 
> qts, I fill it to 8 qts and add one if it goes to 7. If I fill to 10 
> qts, it seems to blow it overboard quickly. I am able to maintain good 
> CHTs so I am not to worried about my reserve oil cooling capacity. My 
> oil temp stays in check. I would not recommend less than the specified 
> amount of oil if the temps are high.
>
> My operation is as follows:
> Take-off, 2700 rpm, manifold pressure 36.5", fuel flow 195-220 pounds 
> per hour
> Climb (100%), 2500 rpm, manifold pressure 30", fuel flow 120 pph
> Cruise, 2300 rpm, mp 30", ff  82-85 pph
>
> I realize that normalized that your mp will not exceed 30", 2500/30 is 
> 100% for my engine.
>
> These are some data points that may or may not help. The 550 may be 
> totally different...
>
> Joel
>
> RICHARD J VANDERSTEEN wrote:
>
>> Any body have any idea about excessive oil overboard
>> crankcase vent?
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