boost presser and power gain

[Greg Hermann]

>>>And how march reduction of compression ratio will
>>> needed?
>
>8.0:1 is a good ratio for an engine which will see 14-18 PSI of boost
>on 93 octane fuel.
IF INTERCOOLED!!!! ---Greg

 If you run racing fuel (say 116), you can run about
>25 PSI.  Provided your engine can take the additional HP (there will
>be ALOT at 25 PSI), and your injection system can properly fuel the
>engine.  If you go lean or otherwise detonate at these boost levels,
>kiss your engine goodbye.
>
>You can also reduce timing as you add boost.  This will allow you to
>run higher boost.  Speaking of spark, you will need a hotter spark and
>smaller plug gaps, otherwise the boost will "blow out" the spark.
>
>It's really tough to say how much power gain you get.  My personal
>rule of thumb for a 3.8L V6 has been 10 HP for every PSI of boost.
>I am sure this varies greatly depending on the base engine
>parameters (VE and such).
>
>All of this is just my opinion...YMMV
>
>Hope this helps,
>-Mike
>==========================================
>Mike Pitts
>Delray Beach, FL
>mpitts at emi.net
>http://www.emi.net/~mpitts/mike.htm
>==========================================