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Ämne: How long can a Saab 2.3 liter engine last?

  1. #1
    Sugmotor
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    dec 2010
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    How long can a Saab 2.3 liter engine last?

    Hi

    Sorry to write in english here, unfortunately my swedish knowledge is close to none, I could write in german too, but I think more people will understand english.

    My car has about 350.000 km on it. It´s a B235E, 2.3 LPT from 2002. The engine block itself has never been worked on.


    EDIT: Meassured compression and it seems too high?

    Cyl 1, 14.5 bar
    Cyl 2, 14.5 bar
    Cyl 3, 14.2 bar
    Cyl 4, 14.9 bar


    It gets full synthetic oil + filter every 10.000 km almost since new and I don´t push the engine until it´s reached warm temperature.
    1 liter oil comsumption per 10.000 km.
    At the motorway I drive around 3000 rpm (140-150 km/h), and never above 3500 rpm.

    If I renew the chain can I expect it to last at least 500.000 km? Not sure if there are records of higher milleages on the B235 or B205 without rebuilding the engine?

    There is a lot of info on the net regarding the B234 to be more durable, mostly because of the pistons, but is this also critical for the LPT cars, at less than 200 hp?

    Merry Christmas to all
    Senast redigerat av oviedo den 2017-02-04 klockan 11:48.

  2. #2
    Steg 1 Arne 2226s avatar
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    B2x5 are a low friction engine, as such it is a more delicate piece than an engine like the B2x4. Earlier models (pre 2005 or really pre may 2004) have a crank house ventilation that does not do all of the job it should in a low friction engine. The problems will be most notable when driving only short distances and/or follow the prolonged service interval for oil change. The problems will often show them self as oilsludge, problems with piston rings and excessive chain wear .

    With the right serviceintervals, new chains and cleaned pistons rings you could very well drive your B235E to 500.000 km
    /arne 2226
    95 2.3t SC bio -08|95 2.0t|9-3 2.0t-99|9-3 2.0t-00|Brenderup LV1000B|Säker H -72
    Tidigare: 95 2.3t bio -07|V40 T4 |9000 CSE 2.3t|9000 CS 2.0i |95 2.0t |9000 CDE 2.3i |900S | Granada Combi |Granada Coupe 2.6 |99 dubbelförgasare |99 dubbelförgasare

  3. #3
    Steg 5 joH900s avatar
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    The main problem (as stated above) with the B205/B235 engine is too long interval between each scheduled service and that combined with a varying oil consumption results in many engines that basically runs dry on oil on a regular basis since most owners only check the oil when there is tapping/knocking sound from the hydraulic lifters and that is too late...

    I don't see why there should be any excessive wear on "the usual stuff" (bearings and timing/balance chain components) with this service history. With that said it of course includes that the engine has regularly been topped up with oil when necessary between each scheduled service.

    Are you wrenching on your own car? If so you could take the timing chain tensioner out and take some measurements, that gives you a indication of any wear on guides/chain/sprockets.

  4. #4

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  5. #5
    Sugmotor
    Reg.datum
    dec 2010
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    15
    Good afternoon

    Sorry for not reporting back before.
    I´ve been unfortunately very busy.
    My mechanic will be wrenching on the car .


    Three days ago I could finally meassure the compression

    Cylinder 1, 14.5 bar
    Cyl 2, 14.5 bar
    Cyl 3, 14.2 bar
    Cyl 4, 14.9 bar

    Is this too high?

    This is all with 352.000 km

    I have OPEN SID and knockcounts are null, zero, none.

    The engine was warm when it was measured.

  6. #6
    Steg 3 Brisses avatar
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    There's no way you can have too high compression unless someone mounted the wrong components in the engine, or liquid entered the combustion chamber. What's important is that the numbers are consistent among all cylinders, which yours certainly are. These numbers look good if you ask me.

  7. #7
    Steg 2 rcys avatar
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    If it is a 2002 I would make sure it has the upgraded crankcase ventilation (I have no idea if that is the correct phrase to use in English, its just freely translated from Swedish so I hope you understand what I am talking about).
    Other than that, keep changing the oil and keep an eye on the chain and the engine should keep going for quite some time. Unpredictable failures can always occur of course, but all you can do is try to prevent them and give your engine the best preconditions possible for a long life.
    Saab 9-3 Aero -02 Saab 9-3 Vector -04
    Saab 9-5 2.3t -00
    Saab 9-5 2.3t -99

  8. #8
    Helt original
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    i have a 9-5 2005 2,3 185Hp with tacho 430000 km approx.
    recently changed the turbo due to "some smoke ( did not see the cars behind...)".
    9-3 -03 2,0 Cab.
    9-3 -08 SC Tid Utbytt till en V60 R-Design -15 D4 Polestar
    ''Kvalitet är när kunderna kommer tillbaka, men inte produkterna.''

  9. #9
    Sugmotor
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    dec 2010
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    15
    Thanks for the answers.

    Yes "rcy", crankcase ventilation is totally correct (or PCV), I understand. I have it mounted.

    Is it advisable to preventively change the lambda sensor or the MAF?

    Since this two are related to the ECU fuel injection measure, and in my case I still have the original ones with 350,000 km.

    Thanks again!

  10. #10
    Steg 3 Brisses avatar
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    Probably not necessary. As long as it's passing vehicle inspection, using normal amounts of fuel, shows the right colour on the spark plugs and runs otherwise fine, you can assume MAF, lambda and fuel injection is working fine. If it ain't broke, don't fix it

  11. #11
    Steg 2 rcys avatar
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    Citat Ursprungligen postat av Brisse Visa inlägg
    Probably not necessary. As long as it's passing vehicle inspection, using normal amounts of fuel, shows the right colour on the spark plugs and runs otherwise fine, you can assume MAF, lambda and fuel injection is working fine. If it ain't broke, don't fix it
    I second that.
    Lambda and MAF will usually generate a check-engine light long before they cease to function, so I see no need to replace them as a preventive measure.
    As Brisse says, you will notice if any of these components starts to fail.

    If we are talking about components around the engine and not the engine itself, I would look at things like fuelpump and drivebelt. These can be replaced as preventive maintenance since they usually fail without prior warning.
    Saab 9-3 Aero -02 Saab 9-3 Vector -04
    Saab 9-5 2.3t -00
    Saab 9-5 2.3t -99

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