Old debate - B230F: Is it an Interference Engine?

Discussion in 'General Motoring' started by Server, Jan 19, 2005.

  1. Server

    Server Guest

    This may be a tired question on this forum. I am a new owner of a 1994 940T
    (B230F Engione). I do not know the vintage of the timing belt on this car
    (with 104K), but before I plunk down $500 to replace it, I would like to
    know - for certain - if this engine has an interference valve design.
    Various web sources disagree on the answer; All with great certainty.

    Has anyone in this forum has a timing belt break on a B230F engine? Was the
    result annoying (get towed to a shop for replaecement), or was it a disaster
    (getting the physics lesson from your mechanic about what happens to the
    crankshaft when piston hits valve).

    Must there be ambiguity and nuance when we are talking about a matter of
    mechanical engineering?

    Dave from the upper left hand corner.
     
    Server, Jan 19, 2005
    #1
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  2. Server

    James Sweet Guest

    "Server" <> wrote in message
    news:...
    > This may be a tired question on this forum. I am a new owner of a 1994

    940T
    > (B230F Engione). I do not know the vintage of the timing belt on this car
    > (with 104K), but before I plunk down $500 to replace it, I would like to
    > know - for certain - if this engine has an interference valve design.
    > Various web sources disagree on the answer; All with great certainty.
    >
    > Has anyone in this forum has a timing belt break on a B230F engine? Was

    the
    > result annoying (get towed to a shop for replaecement), or was it a

    disaster
    > (getting the physics lesson from your mechanic about what happens to the
    > crankshaft when piston hits valve).
    >
    > Must there be ambiguity and nuance when we are talking about a matter of
    > mechanical engineering?



    While I haven't had one break, I have rotated the camshaft 360 degrees with
    the engine at TDC, no collision. The only B230 that I'm aware of that's an
    interference engine is if you have a K cam installed in a NA B230F.
     
    James Sweet, Jan 19, 2005
    #2
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  3. Server

    Tim McNamara Guest

    "Server" <> writes:

    > This may be a tired question on this forum. I am a new owner of a
    > 1994 940T (B230F Engione). I do not know the vintage of the timing
    > belt on this car (with 104K), but before I plunk down $500 to
    > replace it,


    Five hundred dollars! You must be talking to a Vovlo dealership
    mechanic to get such an exorbidant estimate. This should cost you
    abut $250, slightly more if the water pump and accessory belts are
    replaced. Try a different mechanic.
     
    Tim McNamara, Jan 19, 2005
    #3
  4. Server

    powellwd3 Guest

    First. All Red Block engines except the B234 (on later model 740 GLEs) are
    all non-interference. I know this from reading and personal experience (I
    have an '87 740 wagon, an '89 240 wagon and a '95 940 sedan) and have
    broken the T-belt in the 240 while driving. Nothing happened except that
    I was stranded and inconvenienced until the dealer replace the belt.

    As for the cost, $500 seems way to steep even for a dealer who should
    replace the belt and front cam seal. Might be a good time to replace old
    drive belts and the water pump and seals if they are old. Bear in mind
    that a T-belt kit (belt and seals) costs about $25-40, the H2O pump about
    $ 70 (max!) and the it should be no mote than 2-3 hrs of labor. I'd say $
    300 max for all that. Good luck. Also, try looking at Brickboard
    (http://brickboard.com/RWD/) for maintenance tips/instructions on Volvos.
     
    powellwd3, Jan 19, 2005
    #4
  5. You say you have a 940T with a B230F engine. What do you understand by the T
    designation? To most people it would indicate that you have a Turbo engine
    which is a B230FT which should be even less interference than the B230F.

    Cheers, Peter.

    "Server" <> wrote in message
    news:...
    > This may be a tired question on this forum. I am a new owner of a 1994
    > 940T (B230F Engione). I do not know the vintage of the timing belt on
    > this car (with 104K), but before I plunk down $500 to replace it, I would
    > like to know - for certain - if this engine has an interference valve
    > design. Various web sources disagree on the answer; All with great
    > certainty.
    >
    > Has anyone in this forum has a timing belt break on a B230F engine? Was
    > the result annoying (get towed to a shop for replaecement), or was it a
    > disaster (getting the physics lesson from your mechanic about what happens
    > to the crankshaft when piston hits valve).
    >
    > Must there be ambiguity and nuance when we are talking about a matter of
    > mechanical engineering?
    >
    > Dave from the upper left hand corner.
    >
    >
    >
    >
    >
     
    Peter K L Milnes, Jan 20, 2005
    #5
  6. Server

    James Sweet Guest

    "powellwd3" <> wrote in message
    news:...
    > First. All Red Block engines except the B234 (on later model 740 GLEs)

    are
    > all non-interference. I know this from reading and personal experience (I
    > have an '87 740 wagon, an '89 240 wagon and a '95 940 sedan) and have
    > broken the T-belt in the 240 while driving. Nothing happened except that
    > I was stranded and inconvenienced until the dealer replace the belt.



    Not *all* redblocks, I had the head off a B23E recently and the valves very
    clearly stuck down below the edge of the combustion chamber by more than the
    thickness of a head gasket, pistons had flat tops.
     
    James Sweet, Jan 20, 2005
    #6
  7. B234F was fitted to 740 GLT not GLE which had B 230E or F.

    Cheers, Peter.

    "powellwd3" <> wrote in message
    news:...
    > First. All Red Block engines except the B234 (on later model 740 GLEs)
    > are
    > all non-interference. I know this from reading and personal experience (I
    > have an '87 740 wagon, an '89 240 wagon and a '95 940 sedan) and have
    > broken the T-belt in the 240 while driving. Nothing happened except that
    > I was stranded and inconvenienced until the dealer replace the belt.
    >
    > As for the cost, $500 seems way to steep even for a dealer who should
    > replace the belt and front cam seal. Might be a good time to replace old
    > drive belts and the water pump and seals if they are old. Bear in mind
    > that a T-belt kit (belt and seals) costs about $25-40, the H2O pump about
    > $ 70 (max!) and the it should be no mote than 2-3 hrs of labor. I'd say $
    > 300 max for all that. Good luck. Also, try looking at Brickboard
    > (http://brickboard.com/RWD/) for maintenance tips/instructions on Volvos.
    >
     
    Peter K L Milnes, Jan 21, 2005
    #7
  8. Server

    Mike F Guest

    Peter K L Milnes wrote:
    >
    > B234F was fitted to 740 GLT not GLE which had B 230E or F.
    >
    > Cheers, Peter.
    >


    Well I suppose it just depends on where in the world you are. In the US
    and Canada, we got the 16 valve engine in the 740 GLE, 1989 and 1990.
    This had chrome trim and 15" wheels with the large flat stainless steel
    caps. In other parts of the world there was a 740 GLT with this engine,
    which looked like a 740 Turbo and used the 15" 5 spoke wheels.

    --
    Mike F.
    Thornhill (near Toronto), Ont.

    Replace tt with t (twice!) and remove parentheses to email me directly.
    (But I check the newsgroup more often than this email address.)
     
    Mike F, Jan 21, 2005
    #8
  9. The 850 engine is an interference engine - get the timing belt changed ASAP
    for piece of mind.

    Bent valves (damaged head) and related repairs cost about 2000, 4 times the
    price of a timing belt, roughly. It can be a DIY job, see volvospeed.


    "Server" <> wrote in message
    news:...
    > This may be a tired question on this forum. I am a new owner of a 1994
    > 940T (B230F Engione). I do not know the vintage of the timing belt on
    > this car (with 104K), but before I plunk down $500 to replace it, I would
    > like to know - for certain - if this engine has an interference valve
    > design. Various web sources disagree on the answer; All with great
    > certainty.
    >
    > Has anyone in this forum has a timing belt break on a B230F engine? Was
    > the result annoying (get towed to a shop for replaecement), or was it a
    > disaster (getting the physics lesson from your mechanic about what happens
    > to the crankshaft when piston hits valve).
    >
    > Must there be ambiguity and nuance when we are talking about a matter of
    > mechanical engineering?
    >
    > Dave from the upper left hand corner.
    >
    >
    >
    >
    >
     
    Jeff Lesperance, Jan 23, 2005
    #9
  10. Server

    James Sweet Guest

    "Jeff Lesperance" <> wrote in message
    news:zLCId.48567$...
    > The 850 engine is an interference engine - get the timing belt changed

    ASAP
    > for piece of mind.
    >
    > Bent valves (damaged head) and related repairs cost about 2000, 4 times

    the
    > price of a timing belt, roughly. It can be a DIY job, see volvospeed.
    >
    >


    Nobody's ever argued against that, we're talking about the B230F used in the
    240, 740 and 940 cars, completely different beast than is under the hood of
    an 850.
     
    James Sweet, Jan 23, 2005
    #10
  11. Server

    wah Guest

    thank you for your contribution, james.

    bonus points who can name ANY volvo 4-cyl which is interference.
    double-bonus points for the person who can post this in a FAWQ so that we
    don't have to rehash this every month. \

    RTFM, MOFO! (BTW, JS@MSFT, I still have my '91 manual-trans for sale...)

    "James Sweet" <> wrote in message
    news:sPFId.11999$HT6.67@trnddc04...
    >
    > "Jeff Lesperance" <> wrote in message
    > news:zLCId.48567$...
    > > The 850 engine is an interference engine - get the timing belt changed

    > ASAP
    > > for piece of mind.
    > >
    > > Bent valves (damaged head) and related repairs cost about 2000, 4 times

    > the
    > > price of a timing belt, roughly. It can be a DIY job, see volvospeed.
    > >
    > >

    >
    > Nobody's ever argued against that, we're talking about the B230F used in

    the
    > 240, 740 and 940 cars, completely different beast than is under the hood

    of
    > an 850.
    >
    >
     
    wah, Jan 23, 2005
    #11
  12. Server

    James Sweet Guest

    "wah" <> wrote in message
    news:...
    > thank you for your contribution, james.
    >
    > bonus points who can name ANY volvo 4-cyl which is interference.
    > double-bonus points for the person who can post this in a FAWQ so that we
    > don't have to rehash this every month. \
    >



    Someone already did, the B234 16V 4 cyl is very much an interference engine,
    as well as the B23E, high compression flat pistons, K cam, very impressive
    motor but definitly also interference though not to the same extent as the
    16v. Interferes by only about 1mm so you might get away with only a couple
    slightly bent valves if the belt breaks.
     
    James Sweet, Jan 23, 2005
    #12
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