OTHER DATSUN PROFILES

            All of the below measurements were taken at the cam, not at the valve.  The duration figures at the valve are quite differrent from those taken at the cam because of the radius rocker arm.

ROCKER RATIO:   NAP-Z=1.44:1    240SX=1.47:1  AVG.

 

GRIND NO.

SEAT DUATION

.050 DURATION

CAM LIFT

LASH

APPLICATION

STOCK

NAP-Z

247

243

202

200

.278

.278

I .006

E .008

STOCK NAP-Z

330-21

247

243

206

206

.278

.278

I .006

E .008

IMPROVED STOCK GRIND

FOR NAP-Z

STOCK

240SX

244

259

187

196

.272

.272

I HYD

E HYD

240SX

330-18

246

265

193

207

.272

.272

I HYD

E HYD

IMPROVED STOCK GRIND

FOR 240SX

 

BOTH OF THESE PERFORMANCE PROFILES WORK EXCEPTIONALLY WELL WITH THE STOCK FUEL INJECTION.  WILDER PROFILES ARE AVAILABLE BUT ARE NOT PRACTICLE UNLESS MAJOR MODIFICATIONS ARE DONE TO THE ENGINE.

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