i thought it was stated just a couple of posts up that you verified that we can buy the pistons and rods for the 4g63 but we'd have to get the pistons that have a bigger bore since our engine is 2mm bigger bore than a 4g63.

bought my forged pistons and rod from dyno-flo performance down in the states. The Piston is made by Arias whereas the rod is made by Eagle, you have to buy the one with the bore 0.20” with 8.7:1 compression ratio. It is called Eagle H Beam 4340 Rods and Arias Low Silicate Pistons for Mitsubishi 4G63B second Gen – non turbo.

correct me if i'm wrong but also in this link: http://www.theautochannel.com/news/2...14/253444.html
it states that the 4g69 is an upgraded engine from the previous 4g64.

it also states the same exact thing in this link
http://www.mitsubishi-motors.com/cor...003/15E_08.pdf

so if those 2 links are true, then the 4g69 is an upgraded 4g63 block with a lightened 4g64 crank and bored 2mm over with lightened rods/pistons and improved water jackets and cooling. the 4g69 head also has 1mm bigger intake valves than the 4g63/4 and 1.5mm bigger exhaust valves.

from all this information that i've gotten, i've come to assume that the 4g69 engine has more potential than even a 4g63 seeing as how everything is lightened, cooling methods have been improved, the motor is stroked and bored from the factory, and even the head has better flow capabilities. and it has been stated that we can get forged rods and pistons to fit in our engine. with those rods and pistons, a little port/polish, we could have some serious boosting and the motor would be capable of making serious power!!!!

anyone want to correct me on my observations?

 

ok, seeing how it's been over 24hrs since i posted that, i'm guessing no one can correct me and i'm gonna say that there is a lot of potential in the RA engine. both NA and FI. i'm gonna be one to try both world. i'm gonna go the NA route first, then when i'm satisfied, i'll go the FI route. this'll probably take a year or 2.

 

I agree for the most part, but I feel doubtful that we'll ever seen the full potential of our engine unless Mitsu uses it in more models and gets more buyers who want to drop some serious money into the engine.

Thus far we've seen our engine pushed to over 500whp. That's at only 20psi, which is the stock Evo boost level. With sleeved cylinders, and some other work, and $$$, I'm sure we can see quite a bit higher. I don't see that happening for years, at least not until our engine has made a name for itself.

I'd kinda like to see someone swap our engine into an Evo and go nuts with it, but I don't think they'd give up their precious 4G63

 

i agree with everything! a 4g69 powered evo would be sick!!!

 

the only thing i'm wondering is "how far" can we push the stock engine with boost, my buddy has "bone stock" eclipse with no mods done internaly to the stock 2.0L and he's running at 16psi, the only mod he has done is, new injectors and an AEM EMS with a 3" exhaust to the back, and he's putting out 352whp and 323fpt so to get that on all internals makes me wonder how tough the 4G69 engine is?.........i guess i'll find out in the spring when i install my setup.

 

Modern, Do you have the Msquirt already running..?

 

hello my friend i do have an extra set of ross 8.5.1 forged pistons the i make when i build the engine,and for the rods, the ralli art use the same rod dimension of the second generation 4g63 2.0l,eclipse,evo.let me know if you need some help.

 

So just get some pistons and rods from a 2nd gen eclipse from say a junk yard and replace them for the 4g69... sounds easy enough. Is there any additional tuning that needs to be done?

 

It not dead, this thread was sleeping. Lol