2.4 n/t

[Dsm810z]

Website will not allow me to post in the short block section yet, so here it goes. I've read til my eyes bled on this subject and now just need some clarification for a n/t application.

Some of you know of my recent transmission catastrophe, and were very helpful in providing information to match up a 2g fwd turbo transmission to my 1g talon with a 6 bolt 4g63. I had everything mounted up correctly and my Talon ran better, shifted smoother than ever before... for two days. On day 3 of just getting the transmission, axles, clutch, and flywheel installed the engine overheated and fried the head, internals, etc... When my stock transmission blew and fell down on the crankshaft it obviously caused more internal damage than I thought. The general consensus is for me to scrap my DSM, but I cannot bring myself to do it so I have decided to go with a 2.4L n/t swap. All my external engine components on my blown 4g63 are brand new so I can just swap everything over to the g4cs, excluding the timing belt and cam gears, of course.

I'm going to use a g4cs block with a 1g 4g63 head. My cam choice will either be BC 280s or FP4s. Any other recommendations?

Now, as far as internals go, I've read that that if I use 1g rods with stock g4cs pistons this will yield an 11:1 compression ratio. Remember, this is a n/t application so I am not shooting for a compression ratio for running boost. Is this a reasonable compression ratio for a n/t street car? Are there any ways to tone it down just a bit to about 10:1 or 10.5:1??

What size fuel injectors will I need to run the 2.4L n/t setup?

Thanks in advance for all the help,
Chris

 

[mysticj]

91-94 NT ecu(94 eprom)
92 Galant GS/GSR ecu

 

[Dsm810z]

My Talon is a 92 n/t so I already have that ecu

I believe I've finally located a block that I can use out of a '89 galant.

 

[mkgearhead]

I'm having trouble locating a 89-91 sonata for the g4cs block, but I have found a 89 galant. Are there differences between the 6 bolt 4g63 and the 6 bolt g4cs? My understanding is that the 89-91 sonata was the only model that had the g4cs block, is this correct??

You can also find a 6 bolt 4G64 in the early '92 Mitsubishi Expo, Eagle Summit Wagon and Plymouth Colt Vista. If it has the 8 valve head, it's a 6 bolt. Too bad you're so far away, I have a spare shortblock in my garage.

 

[Dsm810z]

Yeah that seems to be the case on so many an occasion that I'm too far away from where I could actually get parts >.<

If I were to use a 4g64 wouldn't there be holes in the top of the block that would need to be plugged?

 

[mysticj]

7-bolt 4g64, yes.
6-bolt 4g64, I believe no.

 

[Dsm810z]

Alright, I took a trip to the local pull a part this morning, and this is what I found:

1) The '89 galant has the engine in it. The engine code is 4g63. My question about it is: does the '89 4g63 have the same 6mm taller deck height as the g4cs and does it have the same bore?

2) I also found a couple of 4g64's in 94-95 galants, these are 7 bolts, aren't they?

3) I found what looks to be a dohc 4g63 in a '98 sonata, is this the g4cn?


Thanks for all of the info. y'all have supplied, it's been a great help,

Chris

 

[mysticj]

1) No

2) Yes

3) No, G4CP. Hyundai version of the 4G63.

 

[g_ferg]

7-bolt 4g64, yes.
6-bolt 4g64, I believe no.

There was a 6bolt 4g64

 

[g_ferg]

Alright, I took a trip to the local pull a part this morning, and this is what I found:

1) The '89 galant has the engine in it. The engine code is 4g63. My question about it is: does the '89 4g63 have the same 6mm taller deck height as the g4cs and does it have the same bore?

2) I also found a couple of 4g64's in 94-95 galants, these are 7 bolts, aren't they?

3) I found what looks to be a dohc 4g63 in a '98 sonata, is this the g4cn?


Thanks for all of the info. y'all have supplied, it's been a great help,

Chris

If you are looking for a 6bolt version of the 2.4 block. Wich in your case would be easier to probably do


http://www.roadraceengineering.com/mitsumo...pplications.htm

thats a list of the mitsu motors (4 cylinder).
summary:
89-91 hyundai sonata 6 bolt 4g64.. g4cs is the best option
others:
85-87 galant 6 bolt 4g64..
90-92 expo 6 bolt.
make sure they are the 12-1/4" bellhousing.

 

[Dsm810z]

The problem is I have been unable to locate any of these vehicles thus far.

The reason for wanting to use a 6 bolt, other than the fact that it is a 6 bolt, is that I have a brand new Fidanza 6 bolt flywheel. I suppose a 7 bolt would work with my setup if I were to purchase a 7 bolt flywheel. My transmission is from a '95 turbo fwd eclipse and the turbo clutches are all the same anyways. Should I just use a 7 bolt engine? Would I be in danger of crank walk running this setup? The 7 bolts seem to be plentiful around here... hmmm, wonder why >.<

 

[g_ferg]

The problem is I have been unable to locate any of these vehicles thus far.

The reason for wanting to use a 6 bolt, other than the fact that it is a 6 bolt, is that I have a brand new Fidanza 6 bolt flywheel. I suppose a 7 bolt would work with my setup if I were to purchase a 7 bolt flywheel. My transmission is from a '95 turbo fwd eclipse and the turbo clutches are all the same anyways. Should I just use a 7 bolt engine? Would I be in danger of crank walk running this setup? The 7 bolts seem to be plentiful around here... hmmm, wonder why >.<

Any motor can crank walk. And honestly i think it is way over rated. Now I thought the front mount for the motor/tranny were different between the 6/7bolts...but i dont remember that for sure

If you want a 6bolt one you could try giving the people at karking.com a call. I have seen them list a few of these at one point on ebay.

 

[mysticj]

I don't remember any 7-bolt 4g64 crankwalking...the driver's side motor mount is different and needs to be modified for the 7-bolt to be swap in.

The 7-bolt 4g64 requires five oil passages to be fill-in, except for the 94 4G64 DOHC.
The 6-bolt 4G64 don't require oil passages to be blocked, IIRC.

 

[Dsm810z]

So the search continues for a six bolt block... ugh, I'm ready to get my baby back on the road so I can get my resto. project back on.

 

[vanilla gorilla]

I have a 6 bolt 4g64. came out of a 92 plymouth colt vista SE. basically the same thing as a mitsubishi expo and eagle summit

 

[mysticj]

If the 6-bolt is hard for you to locate, just settle for the 7-bolt

 

[Dsm810z]

Would I have to fabricate new motor mounts to use the 7 bolt block in my 1g Talon?

 

[mysticj]

No, just mod the driver's side mount. Use the " How to swap a 1g into a 2g" but reverse the process to swap the 7-bolt.

 

[Dsm810z]

What about the front and rear mounts? Those are on the transmission in a 7 bolt aren't they?

 

[dsm-onster]

Yes the front rollstop of the 2g or 94+(?) 4g64 is on the transmission and consequently there is no direct bolton of a front rollstop for putting one in a 1g car.

But racecar builders eliminate the front rollstop all the time. See Serge's mirage and others. If the rear rollstop is welded or has an aluminum insert, then you definately don't need the front. If you have balance shafts, you won't hardly notice the welded/aluminum rollstop at all. Just a snappier resonse and more traction.

I don't know about using prothane mount inserts. If you do them all, I would think you could do away with the front rollstop. . .

 

[DSM-sagacious]

Where you live you can buy your motor at the local Pull-a-Part for less than $200 and get a head for arround $50. Thats with their exchange warranty and core charge included. Also, I know you said you dont want a 7 bolt but, for other options, a'99 galant motor is crankwalk proof with its split thrust main bearing.

 

[Dsm810z]

I already a prothane mount insert on my transmission that I installed when I did my transmission swap. Is the 7 bolt rear roll stop mounted to the block in the same location as the 1g 6 bolts? I don't recall...

I was planning on installing prothane mount inserts in all the mounts when I swapped engines.

 

[mysticj]

on the 4g64, there three mounts on the tranny and one on the engine. aren't you keeping your 1g NT tranny?

 

[Dsm810z]

I went through 2 1g n/t transmissions, and on the third one I decided to swap in a 2g fwd turbo transmission so that is what is in the car now. I did a write up on it, and it's in the newbie forum because the website will not allow me to post elsewhere yet.

When my last 1g transmission went out it literally blew into six pieces and fell down onto my flywheel, and I was sick of the 1g transmissions shifting like crap so I swapped in a 2g fwd turbo transmission.

I believe I will wait to find a 6 bolt block due to the fact of the brand new 6 Fidanza flywheel that is on my car now, and the brand new oil pan also on the car. I blew the head on the engine before the new clutch was even broken in

That's what I was thinking in regards to the mount locations. How would a rear roll stop be mounted to a seven bolt engine to mount in the factory 6 bolt location?

 

[mysticj]

newb question: where is the mount on the front 6-bolt locate?

 

[dsm-onster]

On the block.