Found this link on the Mazda web site. This is not far from home
so will drop in soon and take a few pictures of the intake and exhaust
systems. A bit of interesting information.

Valley Motor Center - 14715 Aetna, Van Nuys, CA 91401- (818) 909-5455

Engine Description

It's no secret that the key to the Star Formula Mazda's affordability is
the low maintenance powerplant. The legendary Mazda 13B rotary not
only produces an effortless 170hp, but does so with bulletproof
reliability. Its not unusual for the dyno-tested, sealed and rev-limited
motors to remain in cars for three seasons without a rebuild. Compare
the maintenance costs of a Formula Mazda engine to that of any other
class and you'll realize why they've remained so popular. 

BASELINE SETTINGS

ENGINE

 Oil brand and viscosity: Any Synthetic. Minimum 30 Weight 

 Oil capacity and change intervals: Engine Full on dipstick, change oil 
 and filter about every two to three races or every six hours of running time.

 Coolant: Water with Water Wetter.

 Timing: Recommended 22deg. adv. DO NOT EXCEED 24 DEG. ADV.!!!
         From distributor side. Facing the back of the car.
         Four hash marks - 10 - 0 - 10 - 20
         Three hash marks - 0 - 10 - 20



FUEL 

      Pressure: 4.5psi
          Type: Super Unleaded (Star Series events use spec ERC fuel)
 Fuel capacity: 13 gal. About 12 gal. runable before slosh causes it to sputter


CARBURETOR   

 Comes pre-jetted


GAUGES

         Tach:  Red line 6600rpm (rev. limited chip); Try not to go below 5500rpm;down shift.
   Water temp:  Do not run below 160 F(71 C) or above 200 F(93 C).
     Oil temp: Should follow water temperatures.
 Oil Pressure: Nothing below 50psi at full throttle.

Note the synthetic oil recommended.

Paul Lamar
 
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