6 bolt 4G63/4G64 hybrid 2.4 L stoker

[Coldfusion]

Anyone out there building one of these? Anyone know of a good plentiful, and CHEAP 4g64 source? I'm bent on doing this but the expo blocks (as any mitsu product) are impossible to find where I live. Does anyone know of any other cars that had a 2.4L 6 bolt 4G64 engine?

I know some chrysler econo trucks had some but they had a bigger bell-housing that won't fit in a dsm.

I need a 6 bolt 64 because the 7 bolt won't fit in my 1G dsm.

So if someone out there knows something, spill it!

 

[BryanK]

I've been doing a lot of research myself into this topic.... best source I found was a post on dsmtalk.com. Go there, search for 4G64 swap, the post is about 18 pages long. Lots and lots of good info there.
Bryan

 

[HighPsi91]

Id tell ya but then id have to kill ya

 

[Coldfusion]

Bryan:

Yeah, they are doing 7 bolt 64 build-ups on that dsmtalk thread. The problem with a 7 bolt is that it won't bolt right in to my 6 bolt car. I'm looking at rebuilding a bottom end, if I can get my hands on a cheap 6 bolt 64 block, then the cost difference won't be so much. I've been told about the expo and whatnot. There weren't alot of mitsu products sold in Canada.

If you are going to spend $3000CAD on a bottom end buildup, why not have 20% more displacement/and torque?

HighPsi91:

Thanks for the encouragement. There is a cheap source vehicle available and I will find out what it is. If Magnus (who is in Canada) is building then, I doubt he would be getting expo blocks, he has found a more common source.

You might as well spill the beans, 'cause I'm gonna find out sooner or later.

Ya know, mitsu made 6 bolts between 90-92.5, so I'm gonna put those years, and 2.4 L into google and see what comes up.

 

[Coldfusion]

The problem with the internet is that everybody loves to talk. Nothing stays secret.

Thanks, Bryan. I looked at that dsmtalk thread again and found this:

Posted by Magnus

well waddaya know, a thread that finally caught my attention on DSMtalk.

First let me say that I had this idea ever since I saw a hyundai with this motor 6 years ago, yeah thats a funny comment, powered by hyundai

I don't see any reason why this motor we are testing(4G64DOHC) couldn't rev to 9500 just like our current motor.

Powered by Hyundai? Hmmm, what 2.4L hyundai's were there?

 

[bigfoot]

http://www.roadraceengineering.com/mitsumotorapplications.htm

http://www.powerpro2000.com/lb_mitsubishi.htm

This one has Sonata's

http://www.bestrebuiltengines.com/CHRYSLER4.htm

You need the fwd version with the 12 1/4" bolt to bolt transmission mounts.

 

[HighPsi91]

Originally posted by Coldfusion
You might as well spill the beans, 'cause I'm gonna find out sooner or later.

When the opportunity is there to use a good classic expression.. you use it

 

[tjh-dsm]

www.magnusmotorsports.com

$4500 for a ready to race 4g hybrid long block. I believe their shop car runs mid 9's, and pulls 1.4 sec 60 foot times......

 

[BryanK]

yeah, I just realized that that entire thread dealt mainly with 7 bolts. As far as six bolts go you probably know as much as I do... as basically every bit of knowledge I have about this has come straight off these forums.
In defense of Marcos at Magnus.... you really can't blame them for wanting to keep their source for these 6 bolt 4G64's to themselves. Think about it... they probably have families to feed and bills to pay, and now that they've come up with an innovative product they want to be the sole people able to do it. It makes prefect justifiable sense to me.
I just wish I had the 4K to get one.... but yeah, I don't so its time to move on.
Good luck with your 6 bolt 64 quest.... let me know how it turns out.

 

[Coldfusion]

BryanK, I think what I'm trying to do is expand my knowledge. And I want to share. Yes, Marco does exceptional work and I don't mean to take anything away from him. However, you just said yourself that you don't have $4.5K to give him. Neither do I. Neither do a lot of people.

We never had that money to give Marco in the first place.

But that doesn't mean we can't have a stroker.

Sooo... WHY NOT do it yourself? Get a CHEAP hyundai block, shove some custom pistons in there and you're done. $600 USD for custom pistons, and just the usual machine work involved in any block rebuild.

There must be some do-it-yourselfer's out there. Anybody done it? Anybody want to do it? C'mon 20% more power! Its a cheap mod! If you are looking at doing a rebuild anyway, how can you pass this up?

I want to do it!

 

[NDgsx]

You know Marco sells ross pistons for the 6 bolt 4G64/4G63 head with a 9:1 compression ratio right? If you want to help Marco at least buy pistons from the guy who did the work.
I know he also used to sell bare 4G64 blocks also, but I'm not sure if he is still doing that.

 

[Coldfusion]

Shipping across the country is the problem. Thats why I'm elated about the hyundai block. Theres probably one sitting in a wreckers yard right here where I live.

I would like to see if anybody else is interested in a homebrew 6 bolt stroker buildup. Maybe a bunch of us could approach Marco about a piston group buy?

 

[BoostinAWD]

I'm planning a rebuild before my engine hits 200k, so depending on the cost I wanna get a stroker also.

 

[nothing stock]

Get the right block, it's not tough. Or you can use your block and just buy the right crank.

 

[Coldfusion]

So the block to get is an 89 to 91 Hyundai sonata, and it has BIG rods!

 

[BryanK]

You are definately correct. I would just about give my left nut to have a 4G64/4G63 hybrid engine, but I just don't have the knowledge to build one. I was going to just buy a 7 bolt 4G64 bottom end and swap that in place of my 7 bolt 4G63, but decided against it because basically all the mitsubishi 7 bolts have the same weaknesses. What would it take to swap in the 4G64 6 bolt shortblock in my 2G? I'm pretty sure I'd probably have to buy new heads/intake from a 1G (they perform better anyways) but will I need to do a lot of machining to the block? What exactly do I need to do to get a 6 bolt in my car, regardless of whether or not its the 4G64 or 4G63? I've seen RRE's 1G in a 2G guide, but I know of some people that are doing this swap without doing all the machining that the RRE website suggests.
I dunno.... you're right though, if I could do it myself I most definately would. I just wish someone out there could just hand me the info I'll need to do it, but yeah, we all know that probably isn't possible. So until then, my only hope for a 6 bolt 4G64 is Magnus, and I don't have the money so thats out.
Good luck with your quest... keep me updated (PM me with your results....)
Thanks,
Bryan

 

[Coldfusion]

BryanK, there is a learning curve, but its not too nasty. Thats why this thread exists. We're going to figure it all out. If you can do a balance shaft removal and or change/replace a timing belt, then you can do a head/motor swap.

For starters, a 6 bolt block fits in a 2G car. A 7 bolt block DOES NOT fit in a 6 bolt car. And we DON'T want it to. :laugh:

Marco has a page on putting a 6 bolt engine in a 2G car.

If you have a 2G and want to avoid crankwalk, you want a 6 bolt block. Might as well be a hyundai block. Cheap and plentiful. You can build it up while you drive your car.

I am sourcing out some blocks, I will have one soon.

Basically we are going to re-build a 6 bolt with a taller deck height (64 T-belt and cam sprockets), and with custom pistons (bigger bore, and different compression).

This ain't rocket surgery!