M25 Engine Information...

 

Some interesting engine specs...

M-25

21 HP @ 3,200 RPM    2,100 – 2.600 cruising range

2.83” x 2.76” stroke

52 CID

21:1 compression ratio

C designates “Catalina” specification (a specific wiring spec and possibly a change in the standard Westerbeke engine mount?)

 

M-25XP and XP(C)

23 HP @ 3,200 RPM    2.100 – 2,600 cruising range

2.95” x 2.76” stroke

56.6 CID

21:1 compression ratio

 

M-25XPA and XPAC

23 HP @ 3,200 RPM    2,100 – 2,600 cruise range

2.95” x 2.76” stroke

57 CID

21:1 compression ratio

 

M-25XPB and XPBC (Parts manual)

26 HP @ 3,000 RPM    2,000 – 2,500 cruise range

2.99” x 2.90” stroke

61.2 CID

23:1 compression ratio


 

M25 - Oil filter
Fram                           PH3593A
Purolater                    L14459
WIX                             51334
NAPA                          1334, 21334, PS1334
AC                               X-88, PF1127
CARQUEST               85452
Fleetguard                   LF3462
Delco                           PF1127
Universal Diesel          300209
Kubota                         70000-15241

M25 - Fuel filter

Purolator                    F50262
WIX                             33390
NAPA                          3390, 3390MP
AC                               TP1200
Hastings                      FF1119
CARQUEST               86390, 86582
Fleetguard                   FF5226
Universal Diesel          298854
Kubota                         70000-43081

 

Cheers, Ken Kloeber 1984 C30 #3573 TRBSFK M-25