Detroit 3-71 Two Stroke Diesel Engine

This running engine from the 1970's, has been driving a marine generator, it is a fairly rare engine in the UK

Category:

Autos & Vehicles

Tags:

• Detroit
• 3-71
• running
• engine

[586guest2]

I LOVE HOW ITS WHISPER QUITE!!!!

[BOBKB3NZX]

WHAT?!

[jmac5058]

WHAT???

[tardis2005]

I used to work on a pair of that Detroit's older cousins, the 110. We had two six cylinder 110's matched to a hospital generator. Good engines.

[586guest2]

@nanocoffeebean lol apparently i couldn't spell 2 years ago.

[nanocoffeebean]

@586guest2 *QUIET

[TurbinePower69]

@Texassince1836 ALL the 71 and 92 series have the same 5" stroke....the  only difference is the Bore, between the two. The 71 use a 4.25" bore and the 92 uses a 4.87" bore. The "USABLE" stroke length

is only about 3.9" before the exhaust valves begin to open...then about 1"- for port opening....I forget the exact length of the ports now....."senior moment". lol

[SpitfireUploads]

@oceantrolls73 You're right there about the boats. My father owned an old 42 foot bridgedecker (1971- 1980) built in1920's originally steam powered. Owner before him refurbished the whole boat and dropped in a new 3-71 about 112 hp. Clean hull he got 10 knots at 1,600 rpm, 2 gallons/hour consumption and nearly 13 knots flat out at, I think about 2,100 rpm. Ran hundreds of hours never missed a beat, real reliable. Noise kept down to OK levels with plenty of sound insulation.

[Littlebluetruck1995]

Sorry, couldn't read the remarks 'cause my eyeballs was vibrating in my head from the noise.

[oceantrolls73]

i know a guy in my neck of the woods who buys these DD scrap engines from oil fields and rebuilds them anew... he makes a cool profit on them and they are in quite high demand in the fields. awesome engines. their 2 stroke system is unbreakable. the parts are still available and they are also a hit on medium sized boats. thanks for posting.

[randeddy]

u mean whisper quiet!!!! Not!!!!!

[Texassince1836]

Respond to this video...  also, a supra is a gas engine with the stroke a weedeater