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  1. #26
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    BMW goes to 4.4 liters themselves though, wouldn't one be confident going to that displacement at least even with boost?

    What about increase revs with boost on the stock displacement, is that cool?
    we don't know what other hardware comes in the GTS. True it is 4.4 liters, but BMW probably spec'd out main bolts, rod bolts, specifically designed crank and did all the legwork to make that design work. Who knows if the main caps are made out of a different stronger material for the GTS 4.4? Who knows if the compression height (distance from wrist pin to top of piston) has changed too? I dunno, BMW probably designed this very carefully becaue it is production.

    Going to 4.6 liters and boost is cutting it a little close IMO with this package.

    The S65 is a very forgiving motor, trust me, being able to give an 11:1 compression engine 9 psi boost and handle detonation for thousands of miles is a good sign. But at 4.6 liters and high boost at those engine speeds, it wont be so forgiving anymore.
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  2. #27
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    Click here to enlarge Originally Posted by DBFIU Click here to enlarge
    The S65 is a very forgiving motor, trust me, being able to give an 11:1 compression engine
    12.0:1

    Click here to enlarge Originally Posted by DBFIU Click here to enlarge
    But at 4.6 liters and high boost at those engine speeds, it wont be so forgiving anymore.
    Well then, I'm glad I stuck with 4.0 liters.

  3. #28
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    4 liters and 20 psi is plenty of power... And reliability will still be there because you arent really affecting the geometry of the rotating assembly, just dont detonate.
    Some people live long, meaningful lives.

    Other people eat shit and die.

    I'm not racist, I hate everybody equally; especially fat people.


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  4. #29
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    Click here to enlarge Originally Posted by DBFIU Click here to enlarge
    4 liters and 20 psi is plenty of power... And reliability will still be there because you arent really affecting the geometry of the rotating assembly, just dont detonate.
    What about bigger blower and more boost?

  5. #30
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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    What about bigger blower and more boost?
    As long as your engine builder has an IQ greater than 80 and your internals are STOUT, you can run as much boost as you want as long as you dont detonate. Given that your block doesnt split in half and your EGTs are sane.
    Some people live long, meaningful lives.

    Other people eat shit and die.

    I'm not racist, I hate everybody equally; especially fat people.


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  6. #31
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    Click here to enlarge Originally Posted by DBFIU Click here to enlarge
    As long as your engine builder has an IQ greater than 80 and your internals are STOUT, you can run as much boost as you want as long as you dont detonate. Given that your block doesnt split in half and your EGTs are sane.
    I wish I knew how much power I could make in theory then.

  7. #32
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    I wish I knew how much power I could make in theory then.
    In theory you can make ONE BILLLLLLLIONNN HORSEPOWERZ
    Some people live long, meaningful lives.

    Other people eat shit and die.

    I'm not racist, I hate everybody equally; especially fat people.


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  8. #33
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    Click here to enlarge Originally Posted by DBFIU Click here to enlarge
    In theory you can make ONE BILLLLLLLIONNN HORSEPOWERZ
    But I mean seriously Click here to enlarge

    The stuff you gave me regarding my motor and boost with certain blowers was bomb though, respect.

    Might even be a good idea to turn that topic into a technical thread for the S65.

  9. #34
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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    But I mean seriously Click here to enlarge

    The stuff you gave me regarding my motor and boost with certain blowers was bomb though, respect.

    Might even be a good idea to turn that topic into a technical thread for the S65.
    Yea I think some of my replies were sporadic, it would be good to have it all in one thread.
    Some people live long, meaningful lives.

    Other people eat shit and die.

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  10. #35
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    Click here to enlarge Originally Posted by DBFIU Click here to enlarge
    Yea I think some of my replies were sporadic, it would be good to have it all in one thread.
    Well let's make it happen somehow. Your stuff was Grade A badass.

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