Diesel Engine

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The Catalina 34 has had at least three different motors. The M25 a 21hp was installed on the the early models. The M25XP (23 hp) became standard in 1988. The M30 a 4 cylinder producing 28hp became an optional engine about the same time and is standard in the Mark II. All are produced by Universal Motors. Due to lack of available supplies, the factory occasionally installed a Yanmar engine.

Cooling

Raw Water cooling system

Internal engine system

Heat Exchanger

Exhaust

Mechanical

Injectors

Air Filters

Blow by

Oil, Filters and Changing oil

Adjusting Valves

Glow Plugs

Engine Mounts

Transmission

Engine Rebuild

Shaft & Propeller

Flexible Coupling

Shaft Alignment

Stuffing box

Propeller

Electrical

Alternator mount/bracket upgrade Important safety upgrade for M25 (not XP) owners
Engine Harness Upgrade
Glow Plug Solenoid
Starter

Fuel

There are many fuel replated pages.

Misc Projects

Engine Cover Hinge

Outboard Motor Mount


Also of Interest

Diesel Info at Wikipedia

Engine Manuals

Parts Catalog