92/93 engine
level1stealth
03-30-2007, 01:55 AM
i was woundering what the differance is between a 92 and 93 engine?? is there a big differance?could i use a 92 engine in my 93 without doing anything extra to it??
youngvr4
03-30-2007, 02:15 AM
read the faq stickied above. i usually would just let you go seek for yourself but i'm feeling generous tonight.
"The DOHC 6G72 is an extremely strong engine, with an alloy steel block and aluminum alloy heads, and is capable of delivering well over 500 HP with turbocharging. As good as the first versions of the engine were, Mitsubishi decided to make the engine even stronger in 1993 models (starting with June 1992 production-date cars) giving it a 4-bolt main bearing cap girdle (the original used 2-bolt caps with stiffening stays on the middle 4 bolts) and a nitrided-steel crankshaft (the original was cast iron or mild steel). Mitsubishi made other changes, most significant of which was moving the crank and cam angle sensors from the left head (where it was user-adjustable for timing) and into the block (not adjustable).”
Essentially, the following internals were changed mid 92:
92.5 has 4 bolt main, 91-92.5 had 2 bolt main (although it doesn't really matter unless you plan on modding the hell out of it). (ALL NAs are 2 bolt)
93 has forged connecting rods, 91-92 does not
93 has forged crankshaft, 91-92 does not
93 has forged steel inserts inside cast aluminum pistons, 91-92 does not
93 has forged steal 25 spline output shaft, 91-92 have a cast 18 spline.
93 has stronger internals in the transfer case, and is a different design than earlier ones
91-93 had OBDI ECUs and are very easy to datalog, 94-95 had hybrid OBDI/OBDII, 96+ had OBDII
Lastly, in 99 they finally upgraded the lash adjusters(lifters) from 1mm to 3mm to eliminate that annoying lifter tick.
"The DOHC 6G72 is an extremely strong engine, with an alloy steel block and aluminum alloy heads, and is capable of delivering well over 500 HP with turbocharging. As good as the first versions of the engine were, Mitsubishi decided to make the engine even stronger in 1993 models (starting with June 1992 production-date cars) giving it a 4-bolt main bearing cap girdle (the original used 2-bolt caps with stiffening stays on the middle 4 bolts) and a nitrided-steel crankshaft (the original was cast iron or mild steel). Mitsubishi made other changes, most significant of which was moving the crank and cam angle sensors from the left head (where it was user-adjustable for timing) and into the block (not adjustable).”
Essentially, the following internals were changed mid 92:
92.5 has 4 bolt main, 91-92.5 had 2 bolt main (although it doesn't really matter unless you plan on modding the hell out of it). (ALL NAs are 2 bolt)
93 has forged connecting rods, 91-92 does not
93 has forged crankshaft, 91-92 does not
93 has forged steel inserts inside cast aluminum pistons, 91-92 does not
93 has forged steal 25 spline output shaft, 91-92 have a cast 18 spline.
93 has stronger internals in the transfer case, and is a different design than earlier ones
91-93 had OBDI ECUs and are very easy to datalog, 94-95 had hybrid OBDI/OBDII, 96+ had OBDII
Lastly, in 99 they finally upgraded the lash adjusters(lifters) from 1mm to 3mm to eliminate that annoying lifter tick.
Igovert500
03-30-2007, 08:27 AM
http://www.stealth316.com/2-cas-91-92.htm
How are you running it without converting the CAS? Or are you using an engine from late in 92?
How are you running it without converting the CAS? Or are you using an engine from late in 92?
Automotive Network, Inc., Copyright ©2025