ralli-art03

iTrader: (1)

I've done a search and couldn't find what I'm looking for.


I need some real specs about the 4G94 engine:

1) Cubic inch displacement
2) Bore/Stroke
3) Crank journal diameter and width
4) Center to center Bore spacing
5) Can the block be bored out? what is the max?

Me and my brother are planning a project and need these specs before we lay down the plans.

When you give specs please leave a reference on where you found the info.

I don't need any BS. If you don't know don't answer. I don't want to know about the 4G63, 4G93, or whatever.

twardnw

iTrader: (4)

I can anwser some of these:

1) 2 liters = ~122.047488 cubic inches
2)
3)
4)
5) not really, it is the same engine used in the US Mirages (1.6L) already bored out to 2L

HobieKopek

iTrader: (8)

Look on Mitsubishi's webside for the first two. Most imports do not give displacement in cubic inches, they give it in cc's. As for the crank, you're on your own. It's already an overbore of the 4g93. If you're looking to eek out horsepower and/or high revs let me suggest that 1. you read the existing tech threads and 2. the crank and upping displacement are not efficient routes.

neilschelly

iTrader: (2)

For normally aspirated setups, it looks like the most promising upgrades are going to be the new NA 10.5:1 pistons from RRM and the cams from RPW. Look into them before you start considering the options it looks like you're considering.
-N

Blacksheepdj

iTrader: (88)

1. Displacement is 122 ci. as previously mentioned.
2. Bore and stroke are 81.5 and 95.8 mm.
3. Crankshaft journal outside diameter 50 mm