Same block just larger bore, water jackets, and oil feed/returns.

 

Are all the oil and water pumps etc interchangeable with the 4g63 and 4g69 ?
Basically is the 69 a 63 MiVec block with from memory 87mm bores standard ?
If so they could be a great alternative block and getting close to square bore/stroke with 63 size crank and rods .

Cheers Adrian .

 

There are a few more bleed holes here and there on the stock 69 hg vs the 63 but nothing more than what the 63 hg covers on it's own block. Believe me, I thought long and hard on all of this. The Power Enterprise hg is a great solution for this pairing.

 

Also, a little bonus is that the 4g69 block accepts the 4g63 water pump with no need for spacers or modification of the pump.

 

Thats what I was hoping would be the case . So the 69 block is an easy replacement with 2mm larger bores . How much larger can they go before rigidity and head gasket sealing become an issue ?

Cheers A .

 

wow, that sounds & looks good!

 

Pics? Build thread?

 

Sorry for thread dig. I am looking to build a 2.4 in order to get a low end power band and 400whp. I have access to a 4g69 for dirt cheap $75. It seems like for the evo 9 head the easiest way to go is the 4g69.

1.) It contains the oil squirters, and the mivec port.
2.) It also has the same deck height as the 4g63 so no cam dialing
3.) Water pump does not need modified
4.) the bore is already done

seems like a LOT less trouble

My one concern is that in this thread
https://www.evolutionm.net/forums/04...-question.html

They stated that the transmissions mounted differently. For those of you that did the 4g69 did you need an adapter or something or was this not really the issue they made it out to be?

Also if there is a build thread for one of these that someone could direct me to that would be fantastic. I searched but didn't find one I just saw a lot of threads like this debating the motor.

 

Bump for answers

 

In regards to the transmission fitment the only modification needed I'm aware of is the automatic transmission hub on the crank needing to be removed, if the engine is out of an auto car.

I do know that ASAP utilized this block in a car with the Evo transmission here. I spoke to the builder of that engine and confirmed that everything did work out. Unfortunately the vehicle kind of disappeared.

My 4g69 block from an '05 Lancer Ralliart and has no oil squirters. Not sure which ones did come with them but that is cool if yours did. Try and source which vehicle it came out of so that other who use this block and want the option won't have to have the custom machine work done.

If using this block with the Mivec head off on an Evo IX then you will need to pick up this adapter from MAP.

The Power Enterprises head gasket works perfectly with this block. If you don't want to spend that kind of money then just go with a bored out oem Evo IX head gasket.

If you have any questions feel free to ask. I've done a lot of research and put in a lot of time on my build. Will have a build thread up when the car is running. So very close. Just awaiting my turbo to be ordered and manifold to be finished. Can drop everything in then It's rough building a car when finances are stretched thin. Figured I had two choices: do it fast and break stuff or take my time and chip away at the project part by part.

mitsuorder

 

How is yours running?

 

I've read through this and a few links off this thread .
From what I can gather 69 blocks need the MiVec oil feed thread altered and may or may not need piston oil squirters . Evo water pump fits .
The water jackets in the block are different to a Mivec 63 so head gaskets can be a supply issue .
To me it sounds like Mitsy went to a bit more effort with mivec engines and it possibly was to better control head and block temps in ULEV (lean burn) engines and reduce detonation - and allow better advance curves .
I'm surprised more people don't use 69s in street car only builds .

A .

 

shadovarian,

The car isn't running quite yet. This has been a slow project but is so very close to being completed. Once it is finished I'll gladly supply a complete build thread if any of you would like.

discopotato03,

First off I LOVE the screen name In order to mate the ix mivec head to the 69 block you could either have the feed outlet hole on the block drilled and tapped to accept the original banjo bolt, use the MAP adapter line found here, or make your own if you have access to such items.

The water jacket paths in the Power Enterprise head gasket are actually matched to those in the head and block. I've heard arguments in the BMW world that the oem hg's water paths are restricted to help keep water where it needs to be at times and at the same time PE touts the opened up paths to be of benefit.

I have a feeling you are correct in them wanting to provide better cooling for the head as well as the cylinders since they lost .5mm of wall clearance. Not huge but everything helps no? Check point 5.2 here Nice little Mitsu pdf file from the guys who designed the engine themselves. Personally I think Yasunori Kutsuna is just dreamy

mitsuorder

p.s. oh and the evo tranny bolts up to this block 100%. verified last week personally

 

I would LOVE a build thread. I am trying to source a good 4g69 block.

 

Mine was out of an '05 Lancer Ralliart I believe.