Today's Message Index:
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1. 07:07 AM - Stratus oil consumption (Larry McFarland)
2. 04:57 PM - Re: Oil Burn (Bill Morelli)
Message 1
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| Subject: | Stratus oil consumption |
--> Stratus-List message posted by: "Larry McFarland" <larrymc@qconline.com>
Hi guys,
This mornings Hist Channel, there was a piece on the 55 chevy engine
and its early tendency to burn a quart of oil every 100 miles
or less and owners weren't happy. Someone at GM
suggested they put a little BonAmi thru the carbs and as result, the
oil consumption dropped off to normal.
Apparently the abrasive scuffed up the rings and walls enough to get them
to re-seat and obtain a better seal.
Don't know if this would help the Subaru that burns oil, but it might
be worth a shot.
Larry McFarland - 601HDS Stratus
Message 2
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--> Stratus-List message posted by: "Bill Morelli" <billvt@together.net>
I have always had some oil consumption but for some unknown reason, I never
really took the time to see how many hours it was taking to use 1 quart.
When I flew to Sun and Fun last year I put 29 hours on the engine and used
close to 4 quarsts of oil so that sounds about what I am using now. Since
Sun N Fun, the engine has another 100 hours on it so the oil consumption
seems about the same now.
When using the differential pressure tester you can listen at different
areas to hear leaking. My differnetial leak test shows about a 12% or so
leak and all four cyclinders are close to each other. Listening at the
carbs, oil filer and exhaust stack using a hollow tube the most leak is
coming from the oil filler which to me means the piston rings. I don't hear
much at the exhaust stack or through the carbs. The information with the
difrential tester indiacates that 12% is a low leakage.
I also have only done these compression tests cold so there may be some
improvement in the readings if I did it with the engine warm.
I ran this all by Ron at Ram performance a while back and he had me check
for breather blowby (I did not realy find any). He asked if the engine is
smoking (don't know, since I'm alwyas in it). I might get the wife to keep
a close look while I taxi out and take off to see if she sees any smoke.
Ron also asked if the oil was thinning indicating gas in the oil but at oil
change time, the oil has seemed normal (I use 20w-50). Ron also said that
his engines leave the shop with zero % leak!!!
Maybe this thing has oval pistons as Frank H has suggested and it has
always pushed some oil??? I'm not sure what else to do about it except put
a quart in every 7 hours.
I have not run any of this past Mykal as I suspect he will not be much help.
Regards,
Bill (N812BM - HDS - Tri - Stratus (RAM Heads) - Vermont - 315.7 flight
hrs. - 434 landings, (1 ON ICE!!)
web site -> http://homepages.together.net/~billvt/
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0 0
Prior to that, I was not paying attention, just addeing oil as needed.
> How much were you burning before? I'm guessing this is a sudden jump
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