6.2 Diesel / 6.5 Diesel Engine

[M1A96819]

Can you tell the difference by looking at a 6.2 diesel cucv engine from a 6.5 diesel HMMWV engine if there are no such markings available?

They seem to look the same to me via all the pictures i have seen thus far.

Here are the photos:
http://i742.photobucket.com/albums/xx70/M1AZIP/dieselengine.jpg

http://i742.photobucket.com/albums/xx70/M1AZIP/dieselengineB.jpg

http://i742.photobucket.com/albums/xx70/M1AZIP/dieselengineC.jpg

http://i742.photobucket.com/albums/xx70/M1AZIP/dieselengineA.jpg

The photo shows a 6.2 or 6.5 diesel engine?


Second Question:

What are the specs of the 6.2 and 6.5 diesel engine?

Green horn here......
Thanks in Advanced.

 

[Bighurt]

General Motors Diesel Engines

Block numbers will identify the actual engine.

 

[southdave]

Up by the timing chain on the left side of water pump, it will say 6.2 blah blah or 6.5 blah blah... what is wierd is I have 6.2 with 6.5 heads engine code indicates that it was one of the last 6.2 made.. which has 6.5 block and heads just only bored to 6.2

 

[jdemaris]

General Motors Diesel Engines

Block numbers will identify the actual engine.

Nope. Some 6.2s have the same block casting # as 6.5s. The only way to tell by looking on the outside is if it has "6.2" or "6.5" in the casting, on top near the intake manifold.

Model year 1982 to 1991 6.2s are casting # 14022660. They use a two-piece rear main seal. The 1982 block is red and all the later are black. Some people believe the first year, 1982 black blocks are stronger then the later due to a higher nickel content. True or not, who knows?

Model years 1992-1993 6.2s and 6.5s are # 10149599. They use a one-piece rear main seal.

1994 and up there were several 6.5 only blocks. Most were not as durable as the 1992-1993s used for 6.2s and 6.5s. But, the last 6.5 blocks used smaller bolts on the outside of the main bearing caps in an effort to stop the blocks from cracking. 12 mm down to 10 MM as I recall.


Cylinder head numbers:

1990-1993 -10137567 6.2s
1982 only - 14028901 6.2
1983-1991 - 14057299
1988 - 1991 - 14077162
1992-1995 10137567- 6.2 and 6.5

 

[jdemaris]

Can you tell the difference by looking at a 6.2 diesel cucv engine from a 6.5 diesel HMMWV engine if there are no such markings available?

Here is the ID on the front of the engine that will read "6.2" or "6.5."

 

[M1A96819]

Casting Number

Does this casting number mean anything on the rear of the engine block regarding this thread?.

Its either 12555506 or 12555306

 

[jdemaris]

Does this casting number mean anything on the rear of the engine block regarding this thread?.

Its either 12555506 or 12555306

Yes, "506" is a later 6.5 only block.

 

[M1A96819]

Mahalo's

Yes, "506" is a later 6.5 only block.

I would like to personally Thank Bighurt, southdave, and jdemaris for the wealth of information they have shared that most definitely helped me and others who reads this thread.

I LOVE THIS GREAT AWESOME SITE!!!

MAHALO's to ALL
M1A96819

 

[joshua756]

The last pic says DLA 2 06 .....can anyone help me in identifying some of these i have been looking everywhere and cant get a year i was told this engine came out of an old K5 it was all 24V when i got it. It has a vacuum pump where the distributor would go on a gas engine

 

[Tanner]

Model year 1982 to 1991 6.2 blocks are casting # 14022660.

 

[rhinob]

Model year 1982 to 1991 6.2 blocks are casting # 14022660.

Good engine or no? My M998 is dated 08/1992 with this engine in it. Runs fine. 23,XXX miles. And the whole truck looks like it.

 

[bob smith]

Do anyone finance the HMMWV other then Govt planet?

 

[Tinstar]

I seriously doubt it.
Unless its a under a personal loan.

There's a LOT in the sale pipeline
You have time.

Save up your money and you'll save money.

 

[bob smith]

Finance

I seriously doubt it.
Unless its a under a personal loan.

There's a LOT in the sale pipeline
You have time.

Save up your money and you'll save money.

Thanks for your comments. The LOT in the pipeline is encouraging. Will set aside my pennies