7 bolt 2.4l blocks

[2gmummy]

I found a list of cars/vehicles that havd a 7 bolt block and will work for a 2.4l but i can no longer fing that thread Does anyone now the thread im talking about, or have a list of engine code and vehicle for a 7 bolt 2.4l?

 

[delta448]

Mitsubishi Sirius engine - Wikipedia, the free encyclopedia

 

[2gmummy]

thanks

 

[SpawnedX]

You want to try to get one from a 98-99 Spyder, as so far from my research, are the only ones that are split thrust bearing and oriented the same as ours.

 

[Absit]

I was under the impression the Galant 4G64s were the same, did they use a thrust washer or?

 

[delta448]

You want to try to get one from a 98-99 Spyder, as so far from my research, are the only ones that are split thrust bearing and oriented the same as ours.

Where are you doing your research? I sincerely want to know.

You're not the first person to convey this and while I have not done any extensive research about it, I have torn down a 4G64 from a 2003 Galant and a 4G64 from a 2001 3G. Both of those engines obviously had the split-thrust bearings, and from eyeballing up a 63 headgasket, could have been made to accomodate a 63 head. Also, both would have accepted my '97 4G63 motor mounts and front case.

However, I did not check the bellhousing pattern on either block. I'm assuming that is the more critical part, since the blocks all essentially come from the same rough casting, but the trans cases are more varied.

Can anyone 100% confirm which blocks are compatible?

 

[Absit]

Where are you doing your research? I sincerely want to know.

You're not the first person to convey this and while I have not done any extensive research about it, I have torn down a 4G64 from a 2003 Galant and a 4G64 from a 2001 3G. Both of those engines obviously had the split-thrust bearings, and from eyeballing up a 63 headgasket, could have been made to accomodate a 63 head. Also, both would have accepted my '97 4G63 motor mounts and front case.

However, I did not check the bellhousing pattern on either block. I'm assuming that is the more critical part, since the blocks all essentially come from the same rough casting, but the trans cases are more varied.

Can anyone 100% confirm which blocks are compatible?

Everything may bolt up, all of your belt driven accessories would be..backwards?

 

[wkmitsu]

I know for sure that the 4G64 in the 3G eclipses will not work with a DSM 63 head, but will work with an Evo head. Also the transmission mounting points will not line up with a DSM transmission, the block is too wide I believe. The models that I know had a 64 compatible with our cylinder head and transmission are the 2G spyder NT and select models from the seventh generation galant. The only significant difference in the 4G64 and 4G63 blocks is they raised the deck by 6 mm to accommodate for the extra 12 mm of stroke and the bore is also widened by 1.5 mm, making the motor a 2.4L displacement.

 

[Absit]

14mm stroke.

 

[wkmitsu]

14mm stroke.

The 4G64 has a 100 mm stroke.

The 4G63 has a 88 mm stroke.

100 mm - 88 mm = 12 mm.

 

[Absit]

The 4G64 has a 100 mm stroke.
The 4G63 has a 88 mm stroke.
100 mm - 88 mm = 12 mm.

Huh, for days now I'll be wondering WTF I was thinking. Thanks for the correction.

 

[delta448]

Everything may bolt up, all of your belt driven accessories would be..backwards?

Why? Once you've stripped it down to the block it's essentially the same. -? Could you not simply swap over all the 63's accessories?

I know for sure that the 4G64 in the 3G eclipses will not work with a DSM 63 head, but will work with an Evo head.

Can you be more specific? What is it that makes the DSM head incompatible?

Don't assume based only on engine and head orientation, I'm begging for more detailed evidence here please. Not that I disagree, I just want the absolute truth. I'm asking for someone to prove it one way or the other for the benefit of all who read this both now and in the distant future while researching.

Also the transmission mounting points will not line up with a DSM transmission, the block is too wide I believe.

I do know that there are at least 2 different width 7 bolt 4G64 blocks and they have different bellhousing bolt patterns, I just don't know for sure which of the widths/patterns is specific to each model. So I can definitely see that being accurate.

The models that I know had a 64 compatible with our cylinder head and transmission are the 2G spyder NT and select models from the seventh generation galant. The only significant difference in the 4G64 and 4G63 blocks is they raised the deck by 6 mm to accommodate for the extra 12 mm of stroke and the bore is also widened by 1.5 mm, making the motor a 2.4L displacement.

I do know that 2G Spyder GS blocks are compatible, that's already fairly well known. Also, the bore and stroke of all 4G64s are the same and the crankshafts of all 7 bolt 4G64s are identical too. You can use the same crank in a 2.3L DSM as you can in a 2.3L Evo 9.

 

[Absit]

These discussions seem to always go this way, a few people argue and nothing's ever resolved. Someone just has to buy the 3g block and do the swap, until then I'm just going to go with no one knows.

 

[wkmitsu]

Can you be more specific? What is it that makes the DSM head incompatible?

Don't assume based only on engine and head orientation, I'm begging for more detailed evidence here please. Not that I disagree, I just want the absolute truth. I'm asking for someone to prove it one way or the other for the benefit of all who read this both now and in the distant future while researching.

Here's a link to a photo (my post) of a 4G64 block that is (going to rephrase this) compatible with a DSM cylinder head orientation/bellhousing size. The block in the photo came from a seventh gen Galant.

http://www.dsmtuners.com/forums/newbie-forum/389900-4g64.html

I can't find a photo of a 64 block from a 3G eclipse (Evo orientation), so here is a link to a photo of an Evo 4G63 block, which should suffice in order to make the point.

http://magnusmotorsports.com/wp-content/uploads/2010/04/tech_evo_02.jpg

You can see that they are essentially the same its just that one faces the other direction. To say that a DSM head would not bolt up at all to the Evo style 64 might be incorrect. You could bolt it up, but the problem comes in the tranny width issue. The side of the block with four freeze plugs on it faces the front of the car on an Evo, which is also the side that the exhaust manifold and turbo are on. If you look at the orientation of the block in my picture, you'll notice that the side with only three freeze plugs on it faces the front of the car, just like a normal 4G63. But if you look at the deck you'll notice that in order to make the cylinder head line up correctly with all the oil/coolant passage ways, trying to put a 63 head on a wide block 64, you'll end up with intake manifold where exhaust manifold would normally be on the reversed orientation and vice versa. Which is fine because the cam gears and everything will still be on the correct side of the block. So say you put the 63 head on a wide block 64, then you just turn it 180 degrees, then you just run into the tranny size issue.

(I got really confused trying to figure this out and had to edit)

I do know that there are at least 2 different width 7 bolt 4G64 blocks and they have different bellhousing bolt patterns, I just don't know for sure which of the widths/patterns is specific to each model. So I can definitely see that being accurate.

The 64 block that will work for a DSM transmission is the narrower of the two. So the 2G spyder RS and Galant motor (like pictured in the link) are the narrow block and the 64 found in the 3G Eclipse is the wide block, which fits an Evo transmission.

I do know that 2G Spyder GS blocks are compatible, that's already fairly well known. Also, the bore and stroke of all 4G64s are the same and the crankshafts of all 7 bolt 4G64s are identical too. You can use the same crank in a 2.3L DSM as you can in a 2.3L Evo 9.

Yeah the cranks in the wide and narrow block 64s are interchangeable. There is a stroker kit for the 4G64 to make it into a 2.6L, and there is only a single style kit produced for this very reason, because the cranks are interchangeable.

 

[yoshi_tony]

i know that oil pumps are the same other than where the alternator bolts up

 

[2gmummy]

is the alt in a different place?

 

[wkmitsu]

is the alt in a different place?

No everything literally bolts onto a 64 the same as a 63.

 

[black91awdturbo]

I know this is an old thread but I am starting a 64 build and didnt want to start a new one so here it goes. The only known to work 7 bolt 64's are the ones from 2g's? I seen some select model Galants as well but which ones I need a bare block that is known to work and just want to buy once .

 

[Alex7747]

I know this is an old thread but I am starting a 64 build and didnt want to start a new one so here it goes. The only known to work 7 bolt 64's are the ones from 2g's? I seen some select model Galants as well but which ones I need a bare block that is known to work and just want to buy once .

its kinda hard understanding what you're saying/asking. but if you're asking if the galant 4g64 will bolt up to the dam tranny, then the answer is.. If its the mid 90s DOHC galant 4g64 it WILL work ..im not sure on the SOHC ones but the DOHC will work.

 

[arrowhead]

Measure it and be sure.

 

[black91awdturbo]

its kinda hard understanding what you're saying/asking. but if you're asking if the galant 4g64 will bolt up to the dam tranny, then the answer is.. If its the mid 90s DOHC galant 4g64 it WILL work ..im not sure on the SOHC ones but the DOHC will work.

Yes you are right I just looked at my post again it was late should have been more clear. I am asking what years of the Galant 4g64 7bolt will mount up to the dsm trans, and will allow me to use my built 6 bolt head on the block.
Thanks again,
Dan

 

[bsbllfit7]

anyone know the bore size of the 2.4l engines, i blew a HG and am wondering what size HG to purchase

 

[snowborder714]

4G64/G4CS - 86.5mm stock bore

 

[bsbllfit7]

Thank you sir, that was the info i was looking for!

Now to the downside, i can only find 85mm, 85.5mm, 86mm, 87mm, and 87.5mm. Anyone have a link to a 86.5mm HG?

 

[jimbob_843]

As far as i know and have personal experience with, any 4g64 oriented 180 of a dsm will not work. Only reason being is the blocks trans side is diferent, check out my profile to see the differences. Also the one that doesnt work i know had a split thrust bearing. My 64 i built came from a 90sum model galant.