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Re: Performance Camshafts??



In a message dated 11/6/99 12:40:50 AM Eastern Standard Time, 
CuatroKoop@aol.com writes:

<< another option is head work, with larger valves.  from talking to todd, if 
 done right, you can see around a 45hp increase.  i dont know if that is in 
 conjunction with an exhaust and different intake (K&N, Jamex, Rammair) or 
 what, but i'll prolly find out this spring, as that route is the cheapest 
 significant HP increase out there.  you could see (on a 20v) up to 225hp 
 (maybe).
 
 -eric ferguson
 '90 CQ 20v, not so stock
 
  >>
    Hmm, I don't know about that.  That seems like the wrong direction to be 
going with the 20V head (love to hear differing opinions).  If you feel that 
the top end is really pooping out on the 7A, then that would be the right 
direction.  Bigger valves will only soften the almost non-existent bottom end 
even more.  The 16v VW head is basically the same thing, and I have never 
heard of anyone going to bigger valves-even in race motors. In fact, do you 
even know of any bigger valves for that head??  It would be interesting to 
ask Todd at what RPM that 45 horsepower comes in, remember, this is a street 
car.  
    At Eurospec a few years ago they built a pretty beastly 7A- 2.6 liter 
stroker, cams, port/polish, even higher compression, exhaust, and remapped 
ECU.  Unfortunately, I never got to see the car, but everyone there who drove 
it said it was still a dog!  The only increase was in the low end torque 
range.  They say that the car sounded awsome under acceleration, then you 
would turn to see where the sound was coming from, and it looked like the car 
was barely moving!  
    I was up at 2Bennett the other weekend, and one of the  type 89 20v 
coupes they maintain was there that had a 3B conversion.  Running 25 psi they 
estimate almost 500hp...cough, cought...ahem, excuse me.  Now that is real 
power, spools up at 2200 RPM and screams to the 7200 RPM limit.  On the track 
they say it is surreal to be in the car, passing other cars like they are 
still-and this is with 17" street tires, eibach springs, and Bilsteins- 
nothng fancy.  
    Remember, this is only a little 5 cyl in a big, heavy car.  Its going to 
be like very difficuly to make that 7A fast without a turbo...
Javad