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Re: Turbo Tuning
At 09:31 PM 4/18/00, you wrote:
Let me first say where my brain resides, I understand GM digital fuel
injection systems including sensors and controlled devices etc. I also
have a good background in engine mechanics rebuilding stock and high
performance engines. I also use and comfortable understand hex and
decimal reading systems for our bins, being able to make changes and burn
the EPROMs. I Also understand GM calibrations (that was fun) regarding
tables, calcs and usage strategy. The tuning tips provided by such great
guys such as ECMNUT and Bruce P were excellent reading and helped fill the
gaps as well as confirm previous areas of understanding.
Now, the work that I am doing (and I feel that my ground breaking and
learned results shared with the list here will help enlighten many who are
coming up the ranks of being tuners) is to change the tables in my bin to
accommodate the mechanical and external changes done to this engine. I
have a set of high performance aluminum heads, more aggressive supposed
computer friendlier cam upgrade, 29 lb injectors and a 39 lb hr turbo, low
compression pistons and a well done performance rebuild to the rest of the
engine. I will run pump gas for now but 100 octane will later satisfy the
need for more speed, later.
Curious what the heck a 39 lb/hr turbo is...
Turbo's are really not flowed in lb/hr etc... as they all depend on exhaust
trim and housing for spool, and compressor trim and housing for
boost. Different combo's of the above can be used to tweak the power curve
of an engine to meet it's desired purpose.
Never in my 37 years of auto mechanicing seen one advertised or even rated
on a spec sheet/compressor flow chart in Lb/hr.
===========================================================
David Cooley N5XMT Internet: N5XMT@bellsouth.net
Packet: N5XMT@KQ4LO.#INT.NC.USA.NA T.A.P.R. Member #7068
We are Borg... Prepare to be assimilated!
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