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NSI normal asperated oil blowoff (and muffler)

 
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Fox5flyer
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PostPosted: Mon Jul 09, 2007 4:20 pm    Post subject: NSI normal asperated oil blowoff (and muffler) Reply with quote

See embedded comments below.

Quote:
Anyway I have a question for you and any other Soob
guys who may have their oil tank on the firewall.

Another Soob KF driver has this firewall oil tank with
his NSI and it blows a good bit of oil out his tank
vent line. I don't have this. Mine has the auto oil
pan instead, so I am not sure if this problem has been
resolved previously or not.

I get the normal amount of vent mist -- just enough to dirty up the
belly, about the same as an 0200 would do. No actual loss of oil level.

Quote:

So have any of you had a lot of oil blow out of your
tank and how did you fix it?

Yes, but only once back in the first few hours when I'd filled it
too full. Made a big mess. I think it's only designed to handle about 3
quarts with the rest in the engine and oil filter.

Quote:

Do your valve covers vent to the oil tank, thus
pressurizing it a bit?

No.

Quote:

Does this tank have a baffel under the vent port?

Yes and it works well, but not when you have too much oil in it.
Lots of engines will blow oil out the vent when too full.

Quote:

And how full is "full" for this tank? In other words,
how close is the oil level to this vent port?
Thanks,
Kurt Schrader

Dunno. I just go by the manual and at oil change I add 3.5 quarts
oil to the tank. No problems.

Also, with about 350 hours on the muffler, no problems, no cracks --
yet. I was always under the impression that it was a pretty heavy duty
unit. One thing I did was to open up a small smiley face in the front of
the cowl that helps to cool the muffler. That might be why I'm not having
any problem. Heat is your worst enemy.

Glad to help.

Deke Morisse
N148DM
S5/NSI Soob/CAP
NE Michigan
"The influence of each human being on others in this life is a kind of
immortality."
-- John Quincy Adams


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smokey_bear_40220(at)yaho
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PostPosted: Mon Jul 09, 2007 7:38 pm    Post subject: NSI normal asperated oil blowoff (and muffler) Reply with quote

Thanks guys,

I'll go over this with him and see if we can get it
corrected for his next flight. First I need to make
sure I understood his problem correctly. He bought it
built and the previous owner just extended the vent
line and let it blow out. Clean belly, but poor
miles/qt of oil.

We'll let you know....

Kurt Schrader
S-5/NSI turbo
Florida and panama

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