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Thread: Forged pistons, oil consumption

  
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    florinike's Avatar
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    Forged pistons, oil consumption

    Cheers guys. I am having some questions and was wondering if you guys have some answers.
    I had some problems with the engine, missfire and allot of wobbleing at idlle and when i open it, i had 2 pistons melted. Not much, but enough.
    Now i've put in some new forged JE pistons on 86.5 and i have some big oil consumption, i've had the engine running for about 1300 km and about 800 grams of oil dissapeard. I checked for turbo but it is ok, and there is not a single drop of oil under the car. I am almost sure that the oil was eated by the car. So, the question: is it normal this amount of oil to go?
    For now, i am using 5W40 but i think i will go for 10w60 in the future.
    Could be that the oil is to thin, and needs to be thick?
    Astra Coupe Z20LET EDS stage 2


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    BUMP
    Anyone guys?
    Astra Coupe Z20LET EDS stage 2


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    dannysport18's Avatar
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    cars can use 1L per 1000miles of use

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    thx for reply danny, i know that but with standard pistons the consumption with 10w60 was about 1L at 8000km. i was wondering if the forged ones eat more oil then normal ones...and if someone who has now forged pistons noticed that...
    Astra Coupe Z20LET EDS stage 2


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    KrisC's Avatar
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    Were the bores honed when the new pistons and rings were fitted?, how did you bed the rings in?
    Astra SRi Turbo
    281|317

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    Doh 86.5mm size
    did they fit new rings on the pistons

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    Yeah mate, the engine was honed, it got to 86.5 now. All in the engine is brand new, the pistons came with rings and bolts, from Je.
    Astra Coupe Z20LET EDS stage 2


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