2.0 engine specs?

[laser9320]

anyone know where i can find the engine measurements and specifications such as deck hight, combustion chamber cc's, etc. on a 93 2.0 L nt? Is my engine a 420a?

 

[DSMfreak]

buy a chiltons......im sure its in there........

 

[Nemesis]

No your engine is a Mitsubishi 4G63, the same as all turbo DSMs. The Chrysler 420A's are used on the 2G NTs.

 

[diambo4life]

Get a factory service manual for your car and particular year. It's invaluable.

 

[verserv]

deck hight, combustion chamber cc's, etc. on a 93 2.0 L nt

You have a 4g63NT
It has 9:1 compression
Block deck surface flatness of .0020 standard
Stroke of 3.46 inches
192 psi compression

I had the other stuff but cant find it at the moment. I will try to get the rest.

 

[diambo4life]

Laser 9320....can you list what particular specs you are looking for so I can post those for you. I have access to a service manual for a 1992 Laser/Plymouth. I can post that info. if you lay down what you are looking for.

 

[laser9320]

piston deck clearance, combustion chamber cc's, piston compression height, connecting rod length. Anything that would help me determine the best way to raise my compression.

 

[diambo4life]

Piston
O.D.*** mm (in.) 85.00 (3.3465)
Clearance (Piston to cylinder) (Non-Turbo) 0.02-0.04 (.0008-.0016)
mm (in.) (Turbo) 0.03-0.05 (.0012-.0020)

Ring groove width mm (in.)
No. 1 1.22-1.24 (0.0480-.0488)
No. 2 1.52-1.54 (0.0598-.0606)
Oil 3.01-3.03 (.1185-.1193)
Service size mm (in.) 0.25 (.010), 0.50 (.020),
0.75 (.030), 1.00 (.039)
oversize


Piston ring
Side clearance mm (in.) Standard Value : Limit:
No. 1, No. 2 0.03-0.07 (.0012-.0028) 0.1 (.004)

End gap mm (in.)
No. 1 0.25-0.40 (.0098-.0157) 0.8 (.031)
No. 2 0.45-0.60 (0.177-.0236) 0.8 (.031)

Oil ring side rail mm (in.) 0.20-0.70 (.0079-.0276) 1.0 (.040)

Service size mm (in.) 0.25 (.010), 0.50 (.020),
0.75 (.030), 1.00 (.039)
oversize

Engine adjustment Std. Vlue. Limit
Eng. compress. press. (psi)/250-400rpm (192) min. (145)
Eng. compression difference between each
cylinder (psi) max. (14)


Cylinder head
Overall height mm (in.) 132.0 (5.197) -0.2 (-.008)*

* Limit must be -0.2 (-.008) combined with amount of grinding of
cylinder block gasket surface.


Cylinder block
Cylinder bore mm (in.) 85.00 (3.3465)

Out-of-roundness and taper of Less than 0.01 (.0004)
cylinder bore mm (in.)

Flatness of gasket Less than 0.05 (.0020) 0.1 (.0040)
surface mm (in.)


Connecting rod
Bend mm (in.) 0.05 or less per 100
(.0020 or less per 3.937)

Twist mm (in.) 0.1 or less per 100
(.0040 or less per 3.937)

Connecting rod big end to 0.10-0.25 (0.0040-0.0098) 0.4 (.0157)
crankshaft side clearance
mm (in.)

Piston pin press-in load N (lbs) 75,000-175000
(1,653-3,858)



Connecting rod bearing
Oil clearance mm (in.) 0.02-0.05 (0.0008-.0020) 0.1(.004)



***O.D.: Outer Diameter

Please note that all values are standard. If there's a second value it's the limit of the variable.

ITEMS: SPECIFICATIONS:
Bore mm (in.) 85 (3.35)
Stroke mm (in.) 88 (3.46)
Compression ratio 9.0 (N/T)
Firing order 1-3-4-2
Valve timing
Intake valve (N/T ONLY!!!!!)
Opens (BTDC) 26 deg.
Closes (ATDC) 46 "

Exhaust valve
Opens (BBDC) 55 deg.
Closes (ATDC) 9 "



P.S. Hopefully this helps you. I copied it right off the book with almost 99.999% accuracy.

 

[Zeus]

What about the valve to piston clearance? I would assume that the valve is not open while the piston is tdc or else the valves would be bent (they are bent, which put me on this overhaul), but then why would there be valve reliefs cut into the pistons? I have a chiltons, but I couldn't find the valve to piston clearance. I already ordered a headgasket + set and would hate to hook it up to my used head (soon to be resurfaced, which will make the head even shorter) and find that the second I start it up it rebends all the valves. If I knew the valve to piston clearance, I would know my max. tolerance on how far i could cut in on the resurface. Thanks for your help.