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decoding engine block numbers

3BarDSM

Proven Member
42
0
Jan 6, 2006
olive branch, Mississippi
Ive been reading that the best way to identify a block was to check the block stamp on the passenger side by the tranny, well I found the number but cant find anything on checking what means what. Its all numbers and the tenth is the letter V, thats the only letter. I am checking the right spot correct, has the mitubishi sign then the numbers are in three lines across? Im trying to make sure I have a 6 bolt block, it has the 6 bolt pan but someone could have just swapped it over. Either way does anyone have a way of checkin these I only keep coming up with chassis vin numbers over and over.

Thanks for any and all help

Oh Ill get the whole number up in the morning.
 

Ghostcrafter

Proven Member
232
0
Sep 15, 2010
Baton Rouge, Louisiana
In addition to the VIN, both of my blocks have 4G63 and an ID number stamped into a flat spot on the front of the engine. Just above the entry hole for the dipstick tube.
 

NOSLO2PT0

Proven Member
2,605
196
Aug 31, 2002
Joliet, Illinois
Vin # is on pass. side, just below the head mating surface, facing the passenger side. 17 digits, 9th digit is year indicator. Also, if the engine is complete, look for the timing belt auto tensioner. If the bolts that hold it to the front case are on same side, that's 6 bolt. If they on opposite sides, that's 7bolt.

Those pics don't tell anything. Pull the pan off. If the girdle is one entire piece, it's a 7bolt. If it's 2 separate pieces, it's a 6 bolt.
 

Ghostcrafter

Proven Member
232
0
Sep 15, 2010
Baton Rouge, Louisiana
The 10th digit is the year...

This makes me curious about the block I just got ... from what I can read it's...

JA3CX56U7MZ009178


Edit:

Origin: Japan
Years: 1991
Makes: Mitsubishi
Models: Galant
SubModel: VR-4 Sport AWD
Engines: 2.0 L 1997 CC L4 DOHC
 

3BarDSM

Proven Member
42
0
Jan 6, 2006
olive branch, Mississippi
alright I think Im looking at the wrong number, it has a diamond star sign the begins with MIT7048112V972170...I really doubt thats it, cause for one that spot isnt dirty like the block is, but it is on the left side by the head.I can not see any other number at this point so unless I move somethings around to see the number Ill just wait till I change the pan to check the girdle.
 

19Eclipse90

DSM Wiseman
4,985
780
Sep 29, 2003
OKC, Oklahoma
Pull the pan off. If the girdle is one entire piece, it's a 7bolt. If it's 2 separate pieces, it's a 6 bolt.

Minor detail, but the DSM 6-bolt girdle has 3 separate pieces. :thumb:

Oil pans are not interchangeable. If you have a 6-bolt oil pan, you can be certain you have a 6-bolt engine.
 

NOSLO2PT0

Proven Member
2,605
196
Aug 31, 2002
Joliet, Illinois
The 10th digit is the year...

This makes me curious about the block I just got ... from what I can read it's...

JA3CX56U7MZ009178


Edit:

Origin: Japan
Years: 1991
Makes: Mitsubishi
Models: Galant
SubModel: VR-4 Sport AWD
Engines: 2.0 L 1997 CC L4 DOHC

It' a 91.
L=1990
M=1991
N=1992
etc

alright I think Im looking at the wrong number, it has a diamond star sign the begins with MIT7048112V972170...I really doubt thats it, cause for one that spot isnt dirty like the block is, but it is on the left side by the head.I can not see any other number at this point so unless I move somethings around to see the number Ill just wait till I change the pan to check the girdle.

That's not it. It's directly below the head surface on the pass side of the motor. Probably right above where the water pipe runs under the throttle body.
 

3BarDSM

Proven Member
42
0
Jan 6, 2006
olive branch, Mississippi
Well the pan comes out not in like a seven bolt, and yea I was way off on the number, thanks for the info everyone
 

Rmontalvo23

Probationary Member
12
0
Mar 14, 2011
Mountain View, California
I used the digram above to find the number for my block but the VIN i gave to the mitsubishi parts department they say is not valid.

I have stamped on my block: 4E3CT64U4LE143683.
On the back side under the intake manifold there is 4G63 - KE1373

Any idea what this code means?
 

19Eclipse90

DSM Wiseman
4,985
780
Sep 29, 2003
OKC, Oklahoma
It's a 1990 4G63 turbo block from an AWD Eagle Talon. Mitsubishi can't look those up any more. Note that the above "diagrams" have been edited for actual pictures to help people in the future.

Decoding VINs
 

Derek Russ

Probationary Member
2
2
Apr 3, 2015
Evansville, Indiana
So do we know what the stamp on the otherside is for? Mine is 4G63 UK3705???
 

zkheasley

Proven Member
71
13
Jan 25, 2014
marietta, Ohio
Hate to renew the thead but I also would like to know the meaning of the # below 4g63
 

Dsmkauai

Proven Member
4,663
418
Feb 20, 2010
Kauai, Hawaii
4: cylinders
G: gasoline fuel
63: internal Mitsubishi code for 2.0 liter displacement
T: Turbo
Also Mitsubishi has notes which vary slightly from the above, which state:
4: cylinders
G: gasoline engine, Iron block
6: engine series
3: engine model
T: turbo
 

Archer Fabrications

Proven Member
9,975
980
May 9, 2011
Scottsdale, Arizona
Bringing it back cause no one said it yet, whats the engraved numbers below where it says 4g63 on the flat spot on the front balance shaft, i know what my motor is, but I'm curious what those numbers actually represent. Mine say JM7948
 

19Eclipse90

DSM Wiseman
4,985
780
Sep 29, 2003
OKC, Oklahoma
It is actually the engine's serial number. As far as I can see it represents nothing more than order of manufacture for the block itself.

At least for 1G 2.0L engines, I'm pretty certain this is another thing one can look at when there is a question whether the engine is a 6-bolt or 7-bolt. Anything up to NH0001 is a 6-bolt; anything after is a 7-bolt.
 

Archer Fabrications

Proven Member
9,975
980
May 9, 2011
Scottsdale, Arizona
It is actually the engine's serial number. As far as I can see it represents nothing more than order of manufacture for the block itself.

At least for 1G 2.0L engines, I'm pretty certain this is another thing one can look at when there is a question whether the engine is a 6-bolt or 7-bolt. Anything up to NH0001 is a 6-bolt; anything after is a 7-bolt.
Interesting! Thanks for clearing that up, theres a bunch of numbers on our motors everywhere good to know one more!
 

Blahpanda

Probationary Member
1
0
Jul 31, 2017
Spanaway, Washington
So o just bought a 97eclipse gs,and so far the only block stamp I've found is J2j6 and below is 4557652
 

boostjunkie24

Probationary Member
24
0
Oct 15, 2014
Erie, Colorado
Not sure if the crank girdle is accessible.
If i can see the 3rd journal in on cuddle.
This is what a 98 or 99 looks like
 

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BoostednBlown

Probationary Member
8
0
Dec 6, 2018
Camp Pendleton, California
Not the best image, but I finally found this. Bought my 2002 Lancer OZ Rally with an engine and transmission not originally in the car and a homemade turbo setup done the cheapest way possible. Been a lot of parts to fix and replace, last was the entire oil pan because he thought RTV would seal the massive hole he made for the turbo oil return. Now the clutch fork broke because he didn't adjust that correctly when putting a new clutch in. I need to find out if this is a 4G63 or what so I can buy a clutch fork for it and get it running again.
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