2-Stroke Detroit Diesel 71 Series and 92 Series

[50BMG]

Hello, I was just inquiring about the 2-Stroke Detroit Diesel 71 Series and the 92 Series. How closely are they related to one another? For instance I have read that boats and buses with a 671 Detroit (can't remember if cylinder orientation Inline or V made a difference or not) could be changed to a 692 Detroit. Is there any truth to this or it is just more Internet garbage? Thanks in advance for any thoughts, opinions, or answers.

Regards

 

[Wayne M.]

The 3 famous DD 2 stroke diesels, 53,71,92 series describe the per cylinder displacement. The 3 are different in external size as well, weather inline or V config. They all operate and look the same. I don’t think any parts like cylinder heads and liner kits are interchangeable. I don’t think you can make a 71 into a 92.

 

[SnoKing]

The 71 is a dry liner engine and the 92 is a wet liner engine. The 92 block is physically bigger. SnoKing

 

[BIGNASTY]

Be sure to get a LARGE drip plan to put under either one when you park it, The plus side to a Detroit is that you NEVER need to remove the pan drain plug just spin on a new oil filter and keep adding oil to refill the slobbering beast

 

[EDankievitch]

Detroit, EMD, and Harley when they stop leaking oil it's time to add lube..... Lol

 

[SnoKing]

Detroit, EMD, and Harley when they stop leaking oil it's time to add lube..... Lol

You forgot BSA and Triumph!

 

[EDankievitch]

Very true, My bad.. My mind is getting old … Lol

 

[slowmover]

The big transport radials:

Curtiss-Wright
Pratt & Whitney

Oil consumption 3.5-6 gals-hr with four engines.
1/2gal/hr per engine a norm.

A Super Constellation carried more than 67-gallons of reserve engine oil. Fuel was not the range-limiting factor.

The 28-cylinder, turbo-supercharged 4,360-cid 4,300/HP PW R4360-series had a TBO of about 600/hrs. An overhaul = $250k.

At an unfamiliar major airport, guess how to find the correct gate?

“Yeah, Texaco, have your guys fill us with 60W. And check the fuel, please”.

.

 

[dieselshadow]

I rebuilt my first rearend on an R-2000 because it was consuming 5 gallons on takeoff. Just a tad excessive.
Turns out the supercharger impeller shaft seal let go. It turned the entire airfield into IFR conditions on his takeoff run. LOL


It was normal to see about 1 gallon per hour per engine consumed/leaked on a DC-4.

 

[slowmover]

MICROLUBE is an engine oil-control additive was patented in1948 and sold in gigantic quantities to those operators.

My father came across it in the oilfield in the 1950s and bought impressive quantities lasted us many years. The big two-stroke Detroit’s used on mud pumps and other power had some of the same problems as the radials: not only leaking gaskets & seals but uneven cylinder head temps causing carbon/coke build.

This product substantially reduced that burning and leaking. Oil consumption normalized at a lower number.

I mention it as I still buy it today.
Known as LUBE CONTROL LC-2

Never marketed properly.

(I also use it in Ed’s Red versus aliphatic mineral spirits).

Goes to the hot spots and goes to work.

(No, I don’t benefit by this . . except I use it).

You wouldn’t believe how long I’ve had hard-working Briggs engines last. Plenty of discussion over on BITOG years ago. (See MOLAKULE). I’m not starting a thread or debating anything, but it was the engines discussed here that this was developed (I have UOAs to back it).

A friendly heads up for you to try a quart over a range of “problems”. Synthetic ATF + Acetone + LC-20 makes a penetrant MAYBE Kroil matches (but K won’t act as long-term preservative the same way). You like Kroil? So do I. Just ordered more.

.

 

[HPSimpson]

I recently rebuild Detroit Diesel 16V92 600v 2500KVA one of two that I own, for power for pumping water taken-en salt water and convert to fresh water. Neighbor has grape farm, and cattle. Yep Detroit does leak some oil but not that awful bad runs sometime more 48 hours at time, I have several water tanks for fresh water one tank for salt going for head pressure for convert.