Luhrs 350 Convertible
Built 1990–1996 by Luhrs Marine
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About the Luhrs 350 Convertible
Researched from public sources for this model. Any individual boat may have been modified or repowered — confirm before relying on any figure.
- Built
- 1990–1996
- Builder
- Luhrs Marine
- Length
- 38.5 ft
- Beam
- 12.83 ft
- Draft
- 3.33 ft
- Displacement
- 20,000 lb
- Hull / keel
- planing
- Propulsion
- inboard
- Water
- 93 gal
- Holding
- 40 gal
- Generator
- fitted on some boats
- Bow thruster
- not fitted
- Stern thruster
- not fitted
Tank capacities — where the figures come from
-
Fuel unknown
“390 gallons of fuel” — search excerpt (1991), boattrader.com · “390 (catalog value from HMY guide)” — spec database (1990-1996), hmy.com · “Fuel Cap. 400 gallons” — review (1990-1991), yachtsurvey.comA marine surveyor's review of the Tournament 350 gives 400 gal (one aluminum tank); the HMY powerboat guide and a listing give 390. Probably a rounding difference, but no Luhrs document settles it.
-
Water 93 gal
“93 gallons of water” — search excerpt (1991), boattrader.comOnly a listing agrees (likely drawing on the same spec data); no builder figure.
-
Holding 40 gal
“a 40-gallon holding tank” — search excerpt (1991), boattrader.comOnly a listing agrees; no builder figure.
-
Water heater unknown
Neither the PowerBoat Guide text nor the Pascoe review mentions the water heater.
Tanks are often replaced or added on older boats — check the tank labels or a survey for yours.
Thrusters and steering — where this comes from
-
Bow thruster not fitted
Our earlier figure of none has no source, and nothing was found either way.
-
Stern thruster not fitted
Our earlier figure of none has no source, and nothing was found either way.
-
Steering unknown
David Pascoe's survey review of a 1990-91 boat covers structure and the free-standing flybridge console helm but not the steering system; no builder or owners' source found.
Thrusters and steering are often replaced — check the units on your boat before ordering parts.
Sources disagree on fuel tank — left blank rather than guessed.
Hull length 35 ft; LOA with pulpit 38.5 ft. Hardtop, generator and fishing package standard. Single-stateroom layout replaced by two staterooms in 1995; bridge redesigned 1995.
Engines fitted
-
Caterpillar 3116 — 350 hp, diesel, twin
factory option
HMY: optional 350 hp Cat 3116 diesels cruise 23-24 kn.Sources: hmy.com
Generator
“Standard features include a hardtop with electronics box, bow pulpit, transom door, livewell, ... generator, swim platfo” — spec database, cdn.denisonyachtsales.com
The PowerBoat Guide, whose text also appears in the HMY powerboat guide, lists a generator as standard, matching our earlier note, but it's a single source, so we don't mark it standard. Pascoe's review boat (gas Crusader engines) had an Onan Ensign 6.5 kW; the review doesn't state the generator's fuel.
-
Onan Ensign 6500 — 6.5 kW
Fitted on the 1990-91 boat David Pascoe reviewed; the review does not say whether it was standard.“even with an Onan 6500 Ensign generator installed” — review (1990-91), yachtsurvey.com
Generators are often replaced or added — check the unit's own plate before ordering parts.
Known problems for this model
-
Mediocre ride hull
HMY notes the 350 is not remembered as one of Luhrs' better-riding boats.hmy.com
Engines & parts
Caterpillar 3116 parts: limited
Factory optional engine — you entered “Caterpillar 3116”
Supported by Cat dealers by serial number; aftermarket rebuilders (e.g., Big Bear Engine) sell parts and address known problems. Some 3116s built in France ('soft block') were problematic and owners are told to check serial numbers with Cat.
Parts sources: Big Bear Engine Company, Diesel Pro Power
Common problems (4)
-
Failures in high-load use engine
3116s generally do fine in trawlers but problems show up in fast boats run near full power for long periods; poor propping that overloads the engine ages it quickly.trawlerforum.com
-
'Soft block' engines engine
A batch of French-built blocks had a reputation for early failure, sometimes within a few hundred hours.trawlerforum.com
-
Injectors, fuel rack and heads fuel
Owners and rebuilders report injector/injector-cup, fuel rack and cylinder head problems; good maintenance history matters when buying.4btengines.com · facebook.com
-
Low turbo/exhaust mixer height exhaust
The low-mounted turbo and exhaust mixer make it harder to get adequate exhaust riser height, so the exhaust installation needs care to avoid water backflow.trawlerforum.com
Maker’s service schedule (18)
| Engine oil & filter change | 250 hrs or 1 yr | “Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Engine Oil and Filter - Change” — manufacturer, oxfordyachtagency.com |
| Fuel filters & water separator | 250 hrs or 1 yr | “Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Fuel System Primary Filter/Water Separator Element” — manufacturer, oxfordyachtagency.com |
| Raw-water pump impeller | 250 hrs or 1 yr | “Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Auxiliary Water Pump - Inspect” — manufacturer, oxfordyachtagency.com |
| Engine pencil zincs | 50 hrs | “Every 1500 L (400 US gal) of Fuel or 50 Service Hours ... Zinc Rods - Inspect/Replace” — manufacturer, oxfordyachtagency.com |
| Valve clearance check / adjust | 2,000 hrs | “First 7500 L (2000 US gal) of Fuel or 250 Service Hours ... Engine Valve Lash - Inspect/Adjust” — manufacturer, oxfordyachtagency.com |
| Coolant replacement & freeze-point test Cat DEAC / conventional coolant | 1,000 hrs or 2 yrs | “Every 30 000 L (8000 US gal) of Fuel or 1000 Service Hours or 2 Years ... Cooling System Coolant (DEAC) - Change” — manufacturer, oxfordyachtagency.com |
| Coolant replacement & freeze-point test Cat ELC (extended life coolant) | 6,000 hrs or 4 yrs | “Every 182 000 L (48 000 US gal) of Fuel or 6000 Service Hours or 4 Years ... Cooling System Coolant (ELC) - Change” — manufacturer, oxfordyachtagency.com |
| Turbocharger inspection | 1,000 hrs or 2 yrs | “Every 30 000 L (8000 US gal) of Fuel or 1000 Service Hours or 2 Years ... Aftercooler Core - Clean/Test” — manufacturer, oxfordyachtagency.com |
| Turbocharger inspect | 1,000 hrs or 2 yrs | “Every 30 000 L (8000 US gal) of Fuel or 1000 Service Hours or 2 Years ... Turbocharger - Inspect” — manufacturer, oxfordyachtagency.com |
| Heat exchanger & oil cooler cleaning | 2,000 hrs | “Every 60 000 L (16 000 US gal) of Fuel or 2000 Service Hours ... Heat Exchanger - Inspect” — manufacturer, oxfordyachtagency.com |
| Drive belts inspect / replace | 250 hrs or 1 yr | “Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Belt - Inspect” — manufacturer, oxfordyachtagency.com |
| Fuel injection timing check | 2,000 hrs | “First 7500 L (2000 US gal) of Fuel or 250 Service Hours ... Fuel Injection Timing - Check” — manufacturer, oxfordyachtagency.com |
| Thermostat (coolant temperature regulator) replace | 3,000 hrs or 2 yrs | “Every 91 000 L (24 000 US gal) of Fuel or 3000 Service Hours or 2 Years ... Cooling System Water Temperature Regulator -” — manufacturer, oxfordyachtagency.com |
| Sea water strainer clean/inspect | 250 hrs or 1 yr | “Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Sea Water Strainer - Clean/Inspect” — manufacturer, oxfordyachtagency.com |
| Jacket water pump inspect | 250 hrs or 1 yr | “Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Water Pump - Inspect” — manufacturer, oxfordyachtagency.com |
| Coolant SCA test/add | 250 hrs or 1 yr | “Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Cooling System Supplemental Coolant Additive (SCA)” — manufacturer, oxfordyachtagency.com |
| Hoses and clamps inspect/replace | 250 hrs or 1 yr | “Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Hoses and Clamps - Inspect/Replace” — manufacturer, oxfordyachtagency.com |
| Crankcase breather clean | 250 hrs or 1 yr | “Every 7500 L (2000 US gal) of Fuel or 250 Service Hours or 1 Year ... Engine Crankcase Breather - Clean” — manufacturer, oxfordyachtagency.com |
Service part numbers (3)
| Oil filter | Sources disagree: 1R-0658 / 324-2598 | “**Oil Filter** **CAT 1R-0658** | 3126B C7 3306 3304 3116 C4.2 3046 3066” — dealer, marineenergy.com.au · “Caterpillar 324-2598 Advanced Efficiency 3116 and 3126 Diesel Engine Oil Filter” — dealer, marineengineparts.com |
| Fuel filter | Caterpillar 1R-0751 Also: Baldwin BF7632, Fleetguard FF5324, WIX 33626 |
“Caterpillar 1R-0751 Advanced Efficiency 3116 and 3126 Diesel Engine Fuel Filter” — dealer, marineengineparts.com · “the secondary fuel filter Cat specifies for the 3114, 3116, 3126/B/E, C7, and C9 family” — dealer, allprodiesel.net |
| Raw-water impeller keyway-shaft Sherwood seawater pump |
Sherwood 17000K | “| **Impeller** | 17000K KEY WAY |” — dealer, marineenergy.com.au · “Caterpillar Marine Engines ... Common applications include: ... CAT 3116” — dealer, marisolmarine.com |
| Zinc / anode | Caterpillar 6L-2283 × 3 | “**Anode kit CAT3116** | 3 x 6L2283 2 x 6L2281 1 x 6L3104” — dealer, marineenergy.com.au · “Zinc Anode for Caterpillar Marine Engines 6L2283 NPT: 1/4”” — dealer, dieselpro.com |
From the engine maker’s parts lists, or two independent parts dealers. Numbers change with serial number and get superseded — check yours before ordering.
Model sources (3)
Other Luhrs models
- Luhrs 34 Convertible 2000–2003
Researched from public sources. Spotted an error? The sources are listed above — tell us what they got wrong.