engine/turbo theory question

JShadzi at aol.com JShadzi at aol.com
Wed Oct 18 03:39:07 EDT 2000


In a message dated 10/17/00 11:32:12 PM Pacific Daylight Time, 
tquattroguy at yahoo.com writes:

<< 
 YOur High compression motor is probably building boost at 2k
 RPM.  Mine does with roughly the same compression.  Only about
 3psi but still something.  
   Try this,  I have a few friends with 4kq's, etc.  4 of them
 running around.  Drive in second at 2k RPM.  Both punch it.  The
 NA motor will jump ahead untill a second or two later when you
 build boost.  Then you'll SCREAM past them.   
   At least this is my experience.  With 8.8:1 and k26.  But I
 dont have the MC-2 electronics.  YMMV
 l8r
   Todd >>

    Yes, I have noticed this toying with Hondas and such out on the road.  I 
let them get a head start, I am not usually worried about catching them a 
second later...I start getting boost right around 2k RPM, about 6 or so by 
2500, and all15 or so right about 3k.  Things really start heating up at 4k 
RPM though, up to about 5500 where it tapers again...hopefully the new cam 
will change that.
Javad 



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