Performance Tuning
112 Harrison St.
Jamestown, NY 14701
 
Mazda Racing Engines


1993 Mazda 2.5 ltr. V-6
Intake Manifold/ Cam testing, March 1996
No modifications to engine other than manifolds/cams.
  • Std. air filter/box
  • Std. cold air inlet to above radiator
  • Std. air flow sensor
  • Std. exhaust manifolds
  • Std. compression ratio
  • fabricated 1.75 O.D. exh. downpipes
  • fabricated 2.25 O.D. open exh. pipe, exiting to rear of car
  • VRIS functioning properly
  • AO6 computer


Dynamometer tuning results.

          Peak torque     Peak horsepower
  1. 175.4 @ 4700    170.2 @ 6400
  2. 173.5 @ 5000    180.8 @ 6000
  3. 177.1 @ 4700    179.6 @ 6300
  4. 173.3 @ 5000    184.9 @ 6900
  5. 174.5 @ 5400    190.8 @ 6800
  6. 170.9 @ 5700    203.7 @ 7200
    Test Notes:
  1. North American intake manifold/ North American cams
  2. Japanese intake manifold/ North American cams
  3. North American intake manifold/ Japanese cams
  4. Japanese intake manifold/ Japanese cams
  5. North American intake manifold/ Interprep 280/9.4 cams
  6. Japanese intake manifold/ Interprep 280/9.4 cams

V6 Engine Build Images

MazdaV6-2.jpg MazdaV6-11.jpg MazdaV6-12.jpg
MazdaV6-13.jpg MazdaV6-15.jpg MazdaV6-17.jpg
MazdaV6-18.jpg MazdaV6-3.jpg MazdaV6-9.jpg
Click on images for enlargement

View of ported intake runners.


Mandrel in place for valve grinding.
Note perfect port finish on walls.


Organized assembly process.


Good view of backside of intakes.


Ready for lifters and cams.


The "talk" stops here. Dyno tuning.


The results = '99 Motorola Cup Champions.