Gardner Engine Profiles and Dimensions

Gardner-8LXB

max bhp250A1925
max rpm1850B1310
marine rating 1153C749
rpm1300D832
marine rating 2170E481
rpm1500F485
marine rating 3200
rpm1700
swept volune(ltrs)13.93
first introduced1958
last production1993
dry weight(tons)1.06
bore(mm)120.7
stroke152.4

Gardner-6LXB

max bhp188
max rpm1850
marine rating 1127
rpm1500
marine rating 2150
rpm1500
marine rating 3140
rpm1700
swept volume(ltrs)10.45
first introduced1958
last production1993
dry weight(tons)0.83
bore(mm)120.7
stroke152.4
 

Gardner 4LW

max bhp68A1130
max rpm1700B670
marine rating 156C634
rpm1300D745
marine rating 262E267
rpm1500F474
marine rating 371
rpm1700
swept volume(ltrs)5.579
first introduced1931
last production1974
dry weight(tons)0.49
bore(mm)107.95
stroke152.4
 

Gardner 2LW

max bhp35.5A705
max rpm1700B705
marine rating 124C700
rpm1200D745
marine rating 230E267
rpm1500F605
marine rating 3 35.5
rpm 1700
swept volume(ltrs)2.79
first introduced1931
last production1974
dry weight(tons)0.41
bore(mm)107.95
stroke152.4
 

Gardner 3LW

max bhp53.5A1060
max rpm1700B870
marine rating 136C634
rpm1200D745
marine rating 245E267
rpm1500F474
marine rating 353.5
rpm1700
swept volume(ltrs)4.184
first introduced1931
last production1974
dry weight(tons)0.43
bore(mm)107.95
stroke152.4
 

Gardner 5LW

max bhp95A1220
max rpm1700B655
marine rating 170C634
rpm1300D745
marine rating 278E280
rpm1500F474
marine rating 389
rpm1700
swept volume(ltrs)6.974
first introduced1931
last production1974
dry weight(tons)0.56
bore(mm)107.95
stroke152.4
 

Gardner 6LW For dimensioned drawing, see 6LXB. Essentially they are the same.

max bhp112
max rpm1700
marine rating 184
rpm1300
marine rating 294
rpm1500
marine rating 3107
rpm1700
swept volume(ltrs)8.369
first introduced1931
last production1974
dry weight(tons)0.64
bore(mm)107.95
stroke152.4

Gardner 8L3B

max bhp260
max rpm1300
marine rating 1200
rpm1000
marine rating 2230
rpm1150
marine rating 3260
rpm1300
swept volume(ltrs)24.175
first introduced1970
last production1999
dry weight(tons)3.15
bore(mm)139.7
stroke196.8
 

Click here a recent restoration

Many boat people believe that the Gardner was the best marine engine ever.  Certainly in the early years of the last century they were hard to beat in terms of popularity.  They are renown for their simplicity of design, build quality, reliability and low fuel consumption. 

But amongst all the Gardner models, the L3B stands out as the creme de la creme.  Here we feature the eight cylinder.

1960’s design L3B’s are perhaps unique in that they were intended primarily for marine use.  Their predecessor the 1930’s L3 developed 200bhp at 1200rpm and the new design, with improvements in injector pump, valves and other areas got this up 260bhp max at 1300rpm.

Prior to 1979, over 1500 8L3B’s were produced by Gardners and many are still in use all over the world. Of the six cylinder version 795 were made.

L3B liners are push fit and can be inserted with the engine in situ.  They do not need hydraulic pressing.  In similar vain, L3B pistons can be withdrawn from the crankcase without dismantling the engine.  This is engineering design at its very best.

The image below features a engine we have restored for a customer in Whitby, UK.   Note the decompression levers featured on the heads.  These facilitated starting by  hand.  With all cylinders decompressed, the engine can be swung by manually.  Even at low rpm, once one lever was dropped the engine will start and then the other levers can be dropped in turn.  With the reliability of electric starters, hand starting is now rarely employed.

8L3B Forward

8L3B Aft

8L3B Starboard