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  1. They will happily do it to the general public...

    They will happily do it to the general public though....
  2. as always the Dinan engine wont make what they...

    as always the Dinan engine wont make what they claim anyway
  3. A bigger engine doesn’t inherently make more peak...

    A bigger engine doesn’t inherently make more peak power, the only definite is it will make more peak torque and peak hp will occur at a lower rpm all else being equal.
    To make a higher peak hp you...
  4. not really sure it is semantics, i guess what i...

    not really sure it is semantics, i guess what i am asking is with pump 93 on a cool day with low IAT and other parameters that may cause timing to be pulled are normal is it actually using the...
  5. do you know for sure that timing actually gets...

    do you know for sure that timing actually gets advanced further with higher octane? or is it better said that it just doesnt pull timing and therefore you get the most out of the stock tune?

    we...
  6. so Dinan are still over charging and under...

    so Dinan are still over charging and under delivering. i cant believe people still spend money with them
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    S54: you can do 3 rings with 24.5mm comp height if you...

    you can do 3 rings with 24.5mm comp height if you use a smaller pin size 20mm (use thicker wall pin though so it is still nice and stiff as the pin reinforces the piston). the oil ring will need a...
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    seen a magazine test M4 ran 115mph which suggests...

    seen a magazine test M4 ran 115mph which suggests about 430-450bhp depending on the calculator so not massively under rated.

    the black strip never lies

    for completeness the C63 507 trapped...
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    S54: i'd use a b32 rod to end up with better ring pack...

    i'd use a b32 rod to end up with better ring pack due to larger comp height piston. im not sure what the deck height is but you must be getting into to around 21 or 22mm. don't worry about the rod...
  10. S54: torque below 3k seems slightly low, otherwise...

    torque below 3k seems slightly low, otherwise makes what is expected for basically stock engine
  11. they used a bigger cylinder spacing to be able to...

    they used a bigger cylinder spacing to be able to use a bigger bore and shorter crank. no doubt to give themselves room to increase the size in due course. the factory wont want to be upping boost...
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    i wouldn't worry about rod ratio its not going to...

    i wouldn't worry about rod ratio its not going to save the bottom end in that scenario a 5mm longer rod wont alter peak piston g's enough, the S54 strokers are worse for rod ratio.
    Only built...
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    from headflow thread there is alot more than 10%...

    from headflow thread there is alot more than 10% hiding in the N54.

    flinchy you gotta ring him and he will get you to send it down and then youll be in the queue.....
  14. running someone down in the topend its about...

    running someone down in the topend its about absolute power and drag, weight wont really affect top speed to any great degree in comparison to drag and power to weight tells you nothing.

    A 1000hp...
  15. S54: bone stock engine just wont make 250wtq on a...

    bone stock engine just wont make 250wtq on a normal dynojet. 250wtq from a 3.246L engine with 262tq at fly is just not reality.

    the S54 is not an underrated engine so stock should be 230rwtq +/-...
  16. S54: posting graphs goes a fair way to prove it is not...

    posting graphs goes a fair way to prove it is not BS.

    surprisingly 15% loss at peak power and 12.5% at peak torque for RWD manual seems to be pretty accurate for stock vehicles and e46m3 fits...
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    or in otherwords without a highend 1D sim that...

    or in otherwords without a highend 1D sim that acoounts for these phenomenon to tell you pressure history and feed it into a 3D analysis it is still more accurate to build a prototype and and test...
  18. S54: +1. could just be the stock number is a poorly...

    +1.

    could just be the stock number is a poorly maintained car and the dyno is inherently a little happy. any exhaust change that hurts bottom end like that might produce positive effects elsewhere...
  19. S54: ive seen S54 with vanos disabled and the bottom...

    ive seen S54 with vanos disabled and the bottom end didnt take a hit like that. i have seen mods to an S54 where the x-pipe was replaced with a y-pipe and moved very close to the engine effectively...
  20. S54: wonder what they did to the exhaust exactly, they...

    wonder what they did to the exhaust exactly, they certainly did well to savage the bottom end...... a loss of 70wtq at 2500rpm.

    "stock" was quite rich at the topend to which always elevates the...
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    i always inflate the mesh at the surface and...

    i always inflate the mesh at the surface and check mesh quality, i did a 5 day training course with ANSYS fluent (not CFX) where that was convered but have not done much hands on since so have...
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    im an amateur CFD person but have been doing...

    im an amateur CFD person but have been doing professional FEA for over a decade now. since starting using ansys CFD became available and i just learn from a peronal point of view

    ive never done...
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    maybe no one is active in this thread but i dont...

    maybe no one is active in this thread but i dont think this graph is correct. cylinder 1 is at TDC on the induction stroke every 720* so on a 6cyl the offset between each cylinder should be 120* ?...
  24. M10: IMO the rods are more of a marvel than the block....

    IMO the rods are more of a marvel than the block. there would not be many applications that involve higher compressive loads. the rods looked very beefy as in topfuel beefy
  25. M10: in the modern world of F1 being strong is merely...

    in the modern world of F1 being strong is merely one aspect. hopefully it doesn't need to be said that it needs to be strong enough to withstand the loads it is subjected to, that is obviously a...
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