X-Mozilla-Keys:                                                                                 
Roy O. Wright wrote:

Howdy,

 From Tracy's web site (http://www.rotaryaviation.com/faq.html) for the 13B:

Mazda 13B Engine Core                   190 lbs. (incl. water pump)
Ross PSRU                               37 lbs.
Starter (Toyota, geared)                10 lbs.
Alternator (Mazda 70Amp)                9 lbs.
Evaporator Cores (Qty. 2)               7 lbs. (total)
Oil Cooler (stock Mazda)                8 lbs.
Carburetors (3 Mikuni)                  5 lbs. (total)
Intake Manifold                 2 lbs.
Air Box                         1 lb.
Coolant (7 qts.)                        14 lbs.
Ignition Coil Assys.                    5 lbs.
Total Engine Weight                     288 lbs.

Exhaust System                          8 lbs.
Engine Submount                 13 lbs.
Main Engine Mount (Modified RV-4)       15 lbs.
Brackets, Hoses, et. al.                9 lbs.
Oil (7 qts.)                            12 lbs.
Total Installed Weight                  345 lbs. (Firewall Forward)

Assuming the subsystems weigh the same and the 20B is 280 +-20 lbs,
that would yield a 20B total engine weight of about 378+-20 lbs. and
an installed weight of about 435 +-20 lbs.  Personally the 20B looks
borderline for use in the plane I'm currently investigating - a Zenith
Air CH801 (150 to 240 hp, up to 440 pounds installed).

Have fun,
Roy

Roy Wright             512.378.1234            mailto:royw@cisco.com
Cisco Systems                              #include <std-disclaimer>
"I can't quite make a PC sing, but roll over and play dead is easy!"

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