Viking 40 Convertible / 40 Sedan
Built 1973–1982 by Viking Yachts
About the Viking 40 Convertible / 40 Sedan
Researched from public sources for this model. Any individual boat may have been modified or repowered — confirm before relying on any figure.
- Built
- 1973–1982
- Builder
- Viking Yachts
- Length
- 40.33 ft
- Beam
- 14.5 ft
- Draft
- 3.5 ft
- Displacement
- 30,000 lb
- Hull
- fiberglass-cored
- Hull / keel
- planing
- Propulsion
- inboard
- Fuel
- 350 gal
- Water
- 90 gal
- Bow thruster
- none
- Stern thruster
- none
Over 400 sold. Steel engine mounts. Most were diesel powered. Generator moved from under the cockpit to the engine room in 1980; teak interior from 1982. Fuel 300 or 350 gal. Build count (approximate, not stored): HMY: over 400 sold.
Known problems for this model
-
Early balsa-cored hullsides hull
One of the first production boats with balsa-cored hullsides; at this age a moisture survey of the topsides is prudent.hmy.com
Engines & parts
Detroit Diesel 6-71 (inline, N / T / TI) parts: good
Factory optional engine — you entered “Detroit Diesel (J&T) 6-71N”
Two-stroke 71-series engine with a huge commercial, bus and marine population; basic engine parts and complete overhaul kits (liners, pistons, injectors, blowers, bearings, gaskets) are cheap and widely available from Diesel Pro Power, Highway and Heavy Parts and others. Some marine-specific parts (coolers, manifolds) are harder to find. Designed to be rebuilt in-frame repeatedly; naturally aspirated engines with good care have been reported past 15,000 hours, turbo versions more like 3,000–5,000.
Parts sources: Diesel Pro Power (Detroit Diesel parts), Highway and Heavy Parts (Series 71)
Common problems (2)
-
Oil leaks engine
Owners describe 71-series Detroits as habitual oil leakers; chasing leaks with the right gaskets and sealants is a routine topic even on freshly rebuilt engines.trawlerforum.com · cruisersforum.com
-
Noise and smoke exhaust
Injector and exhaust noise is loud unless mufflers are well designed, and some smoke is typical of the two-stroke design.trawlerforum.com
Model sources (1)
Other Viking models
- Viking 35 Convertible (1974-85) 1974–1985
Researched from public sources. Spotted an error? The sources are listed above — tell us what they got wrong.