using a fair bit of oil
15 December 2009, 06:16 PM
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using a fair bit of oil
I have a 95 wrx with sti bottom end conversion, it seems to drink a fair bit of oil, I recently got it re-mapped and thought that might cure the oil situation but it has'nt...... any suggestions guys?
15 December 2009, 06:31 PM
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my 02 wrx std 2 litre bottom end used about 1 litre every 1k miles from new until it was replaced 40 k miles later running around 400 bhp, when it was removed all looked fine
My new 2.5 (forged) is using 1 litre ever 800 miles and has done from new and all seems fine ( fingers crossed
)
If things changed over night i would be a little worried, how much are you getting through ?
My new 2.5 (forged) is using 1 litre ever 800 miles and has done from new and all seems fine ( fingers crossed
) If things changed over night i would be a little worried, how much are you getting through ?
15 December 2009, 06:36 PM
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between a litre or two every 4-6 weeks. there is no leak so im puzzled, I was told it drinks oil due to the conversion but it don't seem right keep toppin it up that much, car runs great. It's running at 280bhp and 310torque
15 December 2009, 06:38 PM
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yeh smokes on start and a little on boost, but turbo is fine. I was told that the forged pistones are a bit gappy so are letting a little oil through, but i'm new to all this car tinkering stuff so am a bit clueless.....
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15 December 2009, 07:48 PM
#12
OK
Some 2.5s do and some dont use oil. About a liter a 1000 miles seems to be average.
My understanding is on non forged engines the rings can let oil past. Remember the pistons lie flat in this engine and oil drops to the bottom of the bore when non running and seeps past the piston.
Forged engines - can be a touch loser so that is another reason why oil can also get past the rings.
The soultion is to fit a fairly heavy duty oil catch can...one that returns to the sump
Cheers
Steve
Some 2.5s do and some dont use oil. About a liter a 1000 miles seems to be average.
My understanding is on non forged engines the rings can let oil past. Remember the pistons lie flat in this engine and oil drops to the bottom of the bore when non running and seeps past the piston.
Forged engines - can be a touch loser so that is another reason why oil can also get past the rings.
The soultion is to fit a fairly heavy duty oil catch can...one that returns to the sump
Cheers
Steve
15 December 2009, 07:53 PM
#14
It doesnt stop the oil edging past the pistons, but it does mean that alot of the oil it isnt burnt off as it were, or pisses out the dump valve, or sits in the intercooler pipes - much of it returns to the sump back to where it is supposed to be.
So it does stop useage - Yes
So it does stop useage - Yes
15 December 2009, 08:16 PM
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It doesnt stop the oil edging past the pistons, but it does mean that alot of the oil it isnt burnt off as it were, or pisses out the dump valve, or sits in the intercooler pipes - much of it returns to the sump back to where it is supposed to be.
So it does stop useage - Yes
So it does stop useage - Yes
Looks like an oil catch can is next on my list of things to do.
Cheers for the info Steve
Marx
15 December 2009, 09:14 PM
#21
APi also supply return to sump catch cans too
Last edited by Steve Whitehorn; 15 December 2009 at 09:16 PM.
15 December 2009, 09:29 PM
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It is the advice David at APi gave me. I have only run the engine so far at very low boost - but have seen a small drop in oil temps already. Previously with out the cooler - the temps became a problem. Obviously each car is different. But a cooler is strongly recommended.
APi also supply return to sump catch cans too
APi also supply return to sump catch cans too
Any idea how much your oil cooler was and how much the oil catch cans are?
15 December 2009, 09:36 PM
#23
Any good write ups and pics of fitting a catch can to a 2.5 STI? A lot on older cars etc but no real good ones I have found. Also, anyone have one of these and coment on the amout of oil being collected? Cheers.
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