i retract from MY past opinios and state that yes you can put in a 4g63t head in on a 4g69 block and vice versa i saw this done on a mirage w/ "evo" engine (block read g69 on a g63 head

 

^ even if it can be physically done you will have a hell of a time trying to tune for the dohc. I don't think you will be able to get the ecu to work.

 

i know that is why this kind of mods NEED a stand alone ecu to work, the case in point had a TECIII, remember this was a mirage not a modern lancer

 

fair enough

 

Of course it would be done with a full stand alone ECU, Im not keen on piggybacks period.

 

so sourcing parts are easily found from a 4g63? main/head studs and such? and the only custom items would be valve springs, and such?

 

You shouldnt need anything custom made, just about ever japanese tuning house has 4g63 stuff

 

BUT THE VALVE TERRAIN ON THE 4G69 is one off for the 4g69 no other as of now.

 

so will putting the Evo head (4g63) fit on the ralliart block (4g69)

 

Doing this major mod can really open up a whole new level of performance I mean your options would endless - but which head do you put on this engine my thoughts would be that you could really only put the Evo9 head - not sure could be wrong,

The other thing that you have to ask is do you go N/A and raise the compression to 10:5.1. or go boosted and swap over pistons lower compression etc or have a go at putting in the Evo Stroker kit ?

Either way you would ditch the Fly by wire setup put a return fuel line (all of which can be donated via a EVO!!)

As for the ecu - I wonder if you could ditch the factory ECU and adopt the evo 9 ecuu and then add a PB unit! I mean you are basiclly recreating a 4G63T engine but with a larger displacement.

 

this is an awesome thread. cant beleive it took me this long to find it. very helpful in my quest for 509whp. thanks.

 

So my rods cam in the mail. I'm going to post a picture now for you guys to see and compare our stock rods, and Eagle H-beam rods, for an EVO8 that fits our car perfectly. Some say we dont "need rods, and ours is already reinforced"

one look at this pictures tells a different story...





I'm going to post this up on a few other threads, just so it'll be helpful for others to search and find out info for our car.

 

And now we can see how Mitsubishi saved 100+grams on each rod as a weight saver..

Thanks for posting very interesting to see them side by side - but damn talk about the banana effect...

 

comments were too offtopic.

So as far as evo8/9 internals go... we won't be able to use evo pistons/mods?
but the head is fair game, as well as bolts/studs.. and springs?

Just curious what the advantage of using a 4g63 head, compared to a 4g69 head is.....
thanks again.

 

The advantage would be to be able to drop the compression and more available parts downside is that you lose CC