View source for DSM/4G63

{| class="wikitable" style="text-align:center;"
!|Model Year
!|90
!|91
!|early 92
!|late 92
!|93
!|94
!|95
!|96
!|97
!|98
!|99
|-
!|DSM Version
|colspan="6"|1G
|colspan="5"|2G
|-
!|DSM Sub-version
|colspan="2"|1Ga
|colspan="4"|1Gb
|colspan="2"|2Ga
|colspan="3"|2Gb
|-
!|4G63
|colspan="3"|6-bolt
|colspan="8"|7-bolt
|-
!|4G63 Production
|colspan="6"|Japan
|colspan="5"|USA??
|-
|}

==Differences==

{| class="wikitable" style="text-align:center;"
!|Model year||90||91||early 92||late 92||93||94||95||96||97||98||99
|-
!|# of bolts
|colspan="3"|6||colspan="8"|7
|-
!|Made in
|colspan="6"|Japan||colspan="5"|USA??
|-
!|Redesign year?
| -
|Yes
(bugfixes)
|No
|Yes
(7-bolt)
|colspan="2"|No
|Yes
(US Production??)
|No
|Yes
(Rollback)
|Yes
(3rd Journal)
|Yes
(4pcs. thrust bearing)
|-
!|3rd Journal, Girdle
|colspan="6| - ||colspan="3"|No||colspan="2"|Yes
|}

=4G63 Revisions/production=
** https://www.dsmtalk.com/threads/looking-for-history-of-4g63-engine.197527/

 "Mitsubishi 4G63 Forklift Engines are manufactured by Mitsubishi Motors Engine Manufacturing Co Ltd through its Kyoto engine plant in collaboration with Diamond-Star Motors, which is based in Illinois."
** https://www.solidliftparts.com/part/mitsubishi-4g63-forklift-engine

 "The 4G63 was designed in Japan in the early 80's and made it's debut around 1985 or so. It debuted in the DSM platform in 1989. It's purely a Japanese engine."
** https://www.dsmtuners.com/threads/really-confused-about-4g63.279745/post-151374635

==Plants==
* Shenyang Aerospace Mitsubishi Motors Engine Manufacturing Co Ltd<ref>http://mywikimotors.com/mitsubishi-4g63/</ref>
* Mitsubishi Motors Engine Manufacturing Co Ltd, Kyoto engine plant
* Diamond-Star Motors, Normal, Illinois<ref>https://www.motorreviewer.com/engine.php?engine_id=123</ref>

 "90-early 92 used 6bolts... late 92-99 used 7bolts. Starting at some point in 95 DSMs started using 4g63s that were manufactured in the states... & this is one of the theories behind crankwalk."
** https://www.dsmtuners.com/threads/6-bolt-vs-7-bolt-merged-6bolt-7bolt-6-bolt-7-bolt-six-bolt-seven-bolt.4626/#post-57236

  "According to several sources, the U.S. version of the 4G63 was produced in Normal, Illinois by Diamond-Star Motors, a joint-venture between Mitsubishi and Chrysler."
** https://web.archive.org/web/20200218062124/https://www.hcdmag.com/mitsubishi-4g63-engine/

==Early Revisions==
  1. 4G631 was a SOHC 16-valve version with the compression ratio of 10 and the power of 133 HP at 6,000 rpm, the torque was 176 Nm at 4,750 rpm.
  It was used for Mitsubishi Galant E33, Chariot/Space Wagon, etc.
  
  2. 4G632 was an analog of 4G631 for Mitsubishi Galant E55, the power was boosted to 137 HP at 6,000 rpm, and the torque was 176 Nm at 4,750 rpm.
  
  3. 4G633 was a SOHC 8-valve version with the compression ratio of 9 and the power of 109 HP at 5,500 rpm, the torque was 159 Nm at 4,500 rpm.
  It was used for Mitsubishi Galant E33, Chariot/Space Wagon, etc.
  
  4. 4G635 was a DOHC 16-valve version with the compression ratio of 9.8 and the power of 144 HP at 6,500 rpm, the torque was 170 Nm at 5,000 rpm.
  It is found in Mitsubishi Galant E33, Eclipse, etc.
  
  5. 4G636 was a SOHC 16-valve version with the compression ratio of 10:1 and the power of 133 HP at 6,000 rpm, the torque was 176 Nm at 4,750 rpm.
  It can be found in Mitsubishi Galant E33/EA2A, Chariot/Space Wagon, RVR/Space Runner, etc.
  
  6. 4G637 was a DOHC 16-valve version with the compression ratio of 10.5 and the power of 135 HP at 5,750 rpm, the torque was 176 Nm at 4,500 rpm.
  It was installed in Mitsubishi Lancer 9, Outlander, etc.
** http://mywikimotors.com/mitsubishi-4g63/
* http://mywikimotors.com/mitsubishi-4g63t/

==98/99 Revision==
  "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"
** https://www.dsmtuners.com/threads/decoding-engine-block-numbers.384520/post-153672735

===99 Revision===
 "The 1999 7 bolt has a 4 piece Thrust bearing assembly that allows the thrust bearing to float and self align with the crankshaft. This type of bearing was carried over to the EVO IV and newer 4g63-t and 4g64 engines."
** https://www.dsmtuners.com/threads/99-4g63-4g64-crankwalk.342780/post-151925438

==Engine from VIN(DSM)==
 R
 8th Digit
 Engine
 B - ?
 F - 2.0 turbo 1G/2G 
 G - 2.4 NT 2G 
 R - 2.0 NT
 T - 1.8 NT
 U - 2.0 turbo 1G 
 Y - 2.0 NT 2G
** http://www.vfaq.com/mods/VINs.html

See also: [[DSM/VIN#First_7-bolt_4G63]]

==Engine Serial #==
  6-Bolt = "Up to Engine NH0001"

==Visual==
  Ok if the crank angle sensor is located on the left side of the motor and clearly visable by the PVC valve then it is either a...1st Gen motor or a 97+ motor. 95-96 motors do NOT have the CAS on the side of the motor, it's hidden.
** https://www.dsmtuners.com/threads/engine-serial-number-merged-7-9.50832/post-1049077