RE: bmep

["Dave Eaton" <Dave.Eaton@clear.net.nz>]

exactly my point.  it matters diddly.  also bear in mind that bmep isn't a
single number for an engine, but a range of figures throughout the rev
range, for the type of fuel.  imho, bsfc is a better measure though, given
that specific consumption is relatively important (unless you can afford the
gas - see 'gas out' thread).

again, materials, manufacturing, technology and quality...

dave
'95 rs2
'90 ur-q

-----Original Message-----

Date: Sun, 11 Apr 1999 12:17:26 EDT
From: QSHIPQ@aol.com
Subject: RE:RE: S4

>are you aware of what the bmep actually means?  my undersquare rs2 i5 turbo
>produces 144bhp/litre using 1.0bar of pressure.  what does that say about
>the bmep???

er, I believe your RS2 uses more than 1.0bar pressure to attain those
numbers
Dave.  If I remember my RS2 tech stuff correctly, 19psi equates to 1.3bar of
pressure.  Given your own argument, this detail says alot about bmep.  Since
BMEP is most efficient (highest) at peak torque, the RS2 wins with a lot of
audi toys, including the intake and exhaust manifolds.  Given you need HP or
torque to figure BMEP and/or BSFC, I'm not sure either of them are great
indicators of much of anything any more.  You can use HP or torque to figure
mechanical efficiency.