4G64 Wideblock discussion

Post by **DJpowerHaus** » Thu May 06, 2004 1:11 pm

If anybody has talked to me in the last few weeks you've heard of my next plan. 2.4L G64B wideblock. There are 6 and 7 bolt versions of this block as well. I'm really trying to find more about this motor and what is involved to make it good for some boosting and all that good stuff. It has the "wide" bellhousing so it should bolt to the Starion transmission making the motor really a bolt in affair... once its built. Anyways.. I'm looking for as much info as I can on how to really do this. It's on my summer to do list and will really the first time putting together a motor from the inside out.

Here is a list of differnt Mitsu motors, some specs and what they came in. I'm really wondering about timing belts and tensioners as most 2.4L stuff on DSM boards are 2G related and they have different belt configurations

<a href='http://www.frautoparts.com/FREngine/mitsubishi.htm' target='_blank'>http://www.frautoparts.com/FREngine/mitsubishi.htm</a>

Remember I'm not really a DSM guy... I just have one of the motors and never got into the inner workings and compatiblity between parts of it beyond what was needed to put it in the Starion.

So anyways... I know a few of you guys are doing this swap with the 2.4, so help me to understand. I really want to know what parts will be needed besides the 2.4L block and crank and to be used with a donor '90 (1G) 6 bolt bottom end and head.

asian312 · Post by **asian312** » Fri May 07, 2004 5:30 am

Lets see if I can't shed some light on the subject.

There's basically two 2.4 configurations available (both are narrow block configurations). One uses a mitsu 4G64 block and the other a hyundai G4CS block. The main differences in the two are the rod ratios. The G4CS has a higher ratio which equates to more rev range. Rumor has it that the 4G64 block has a significantly lower ratio, which I can believe since the block has to be machined to make clearance for the rotating assembly. The other immediate difference is the wrist pin sizes. The G4CS uses a 21mm pin and the 4G64 uses a 22mm pin.

I'm more familiar with the G4CS build so I'll expand on that. Basically you'll need the block, crank, and main caps. Everything else is transferable from a 4G63. Oh and u'll need these custom pistons:

Wiseco pistons
G4CS - K564M865 (std. bore) or K564M87 (.020)
4G64 - K54M865

Other than that swap the front case, water pump, 4G63 head, ect. and rock on. There is one more configuration but that involves stroking the 4G63 block and I think it ends up at 2.3L. Here's a site for referances on doing the 4G64 build.

<a href='http://www.carotica.com/4g64/' target='_blank'>http://www.carotica.com/4g64/</a>

Post by **DJpowerHaus** » Fri May 07, 2004 3:43 pm

I dunno about all that machining to make clearances for the rotating assembly.. I've only ever found that info in regards to the 2.0 with a 2.4 crank. More links would be very helpful.

What about castings? I mean I've heard of 1G and 2G style castings for the differnet 2.4L blocks as well as 6 bolt and 7 bolt blocks. I'm guessing this is for differences of the timing components. I can't find much on this stuff and most DSM boards I've posted on just let the post sink to the bottom unanswered.

Why do you need to change the pistons? What's the CR on an NA 2.4?

I'll shut my mouth now and read up on this FAQ: <a href='http://www.prostreetonline.com/pso/page ... ticleid=15' target='_blank'>http://www.prostreetonline.com/pso/page ... leid=15</a>

We'll see if it answers my questions.

Post by **DJpowerHaus** » Fri May 07, 2004 3:47 pm

Nope.. didnt help

Did the 2.4L DOHC 94 Galant have the 2G style timing belt or the 1G style timing belt? Was it 6 bolt or 7?

Joel07 · Post by **Joel07** » Sat May 08, 2004 3:48 pm

Well what about the 2.4 that came in the Ram 50's and Mighty Max's? Is that idea just thrown out the window? I know it's a different head design than the Galant's 2.4 (I've worked on a bunch of them at the machine shop), but I've never been able to see the bottom end close up to see if it's the same as the 4g63...

Since some of those trucks were available with the 2.0, 2.4, and 2.6 it would make since if they all used the same bolt pattern...

scum · Post by **scum** » Sun May 09, 2004 8:35 pm

there’s a twin cam 2.4L VR4 engine??!?!? WTF is wrong with Australia.... all we have over here are 1600 pushrod carbie dato engines... to most ppl a VR4 is unheard of, and to me a 2.4L VR4 is unheard of. what other cool stuff did you get over there? over here we got all the optional blanking plates, making our cars soooo much better than yours.. for instance, where you have power windows and mirrors we got the 'optional blanking plate' where those switched where SUPOSED to go

well, thats my rant..................

Post by **DJpowerHaus** » Mon May 10, 2004 11:42 pm

There isnt a turbo 2.4L in anything stock that I know of.. and all 2.4s but 1 year were SOHC...

but I did get to see a 3L Japanese Imported 2nd? Gen GVR4 the other day. It was legit too.. RHD, 4WD, 3000GT motor. Matt and I were like whoa. You DO get that one and we don't.. and you get all those cool V8s that are actually cool. People are loving the new GTO over here and you guys have had that for years.

Lets trade places.. i want to go to Australia.

WickedTSI · Post by **WickedTSI** » Tue Jun 01, 2004 11:15 pm

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Joel07 @ May 8 2004, 07:48 PM)</td></tr><tr><td id='QUOTE'> Well what about the 2.4 that came in the Ram 50's and Mighty Max's? Is that idea just thrown out the window? I know it's a different head design than the Galant's 2.4 (I've worked on a bunch of them at the machine shop), but I've never been able to see the bottom end close up to see if it's the same as the 4g63...

Since some of those trucks were available with the 2.0, 2.4, and 2.6 it would make since if they all used the same bolt pattern... [/quote]
the head fits on fine. i have a 2.4 mightymax block in my garage with a 1g head sitting right on top. im pretty sure you just have to close up the same to holes you do on the other 2.4 blocks.

AbsurdParadox · Post by **AbsurdParadox** » Sun Jun 06, 2004 9:03 pm

Has anyone figured out what REALLY does have the 4g64 wide/narrow blocks, and if the wide bolts straight up to the starion tranny? Everyone says it "should" and all that... but don't go and get my hopes up if it won't work!

AbsurdParadox · Post by **AbsurdParadox** » Sun Jun 06, 2004 9:08 pm

Hey, I checked out your link, DJpowerHaus, and noticed:

5/87-88 2350 cc 4G64 Galant, FWD, Without jet valve, SOHC 8-valve, 12 1/4 bellhousing

6/88-6/92 2350 cc 4G64 Pick-up, Wagon, van RWD,Without jet valve, SOHC 8-valve, F.I., 6bolt flywheel, 13 1/4'' bellhousing, CC.

Notice the bell housing measurements!

Post by **DJpowerHaus** » Mon Jun 07, 2004 10:58 pm

Nice huh? I'm getting a spare shell, soon it should be time for a 2.4block and all that good stuff. Save me money! Somebody make all the mistakes so I dont have to this time.

WickedTSI · Post by **WickedTSI** » Sun Jul 04, 2004 12:36 pm

so am i right in saying no ones actauly done the wideblock yet? right now im stuck on what rods to use, any ideas? i probably shouldnt have picked sometihng like this my 1st engine build but whatever....lol

Mike · Post by **Mike** » Sun Sep 05, 2004 4:05 am

If the RWD wideblock is anything like the FWD narrowblock, then 6 bolt DSM rods may fit.

Mike · Post by **Mike** » Sun Sep 05, 2004 4:20 am

</div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (WickedTSI @ Jun 2 2004, 03:15 AM)</td></tr><tr><td id='QUOTE'> </div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Joel07 @ May 8 2004, 07:48 PM)</td></tr><tr><td id='QUOTE'> Well what about the 2.4 that came in the Ram 50's and Mighty Max's? Is that idea just thrown out the window? I know it's a different head design than the Galant's 2.4 (I've worked on a bunch of them at the machine shop), but I've never been able to see the bottom end close up to see if it's the same as the 4g63...

Since some of those trucks were available with the 2.0, 2.4, and 2.6 it would make since if they all used the same bolt pattern... [/quote]
the head fits on fine. i have a 2.4 mightymax block in my garage with a 1g head sitting right on top. im pretty sure you just have to close up the same to holes you do on the other 2.4 blocks. [/quote]
Is it a wideblock? 6 bolt?

WickedTSI · Post by **WickedTSI** » Mon Sep 13, 2004 8:58 pm

ya, its a wideblock 6 bolt, currently on hold for atleast 2 weeks with intrnals due to i have a truck payment, rent and phone bill all i nthe same week, lol.

blue1 · Post by **blue1** » Fri Oct 08, 2004 8:01 am

With the six bolt rods in some of the 2.4's you might have to have the width of the bigend machined from 1.117 down to 1.038 approx .040" off each side. some thing to watch!!

AbsurdParadox · Post by **AbsurdParadox** » Wed Oct 13, 2004 1:13 pm

From the link DJ provided...

90-5/94 2972 cc 6G72 V6 Montero, D-50, Van. 2WD & 4WD, roller cam, RWD, 12 Valve, Raider, WP.

So... what exactly has that RWD tranny, and will it bolt up to a 3000GT's 6g72?! (Wonder if theres wide/narrow blocks for that thing too)

Just might have to scrap this 4g project,since I also have a 6g sitting arond.... (hehe okay, probably not).

Post by **DJpowerHaus** » Tue Oct 19, 2004 10:39 pm

I've seen more fast 4Gs than 6Gs...

And where does this stand? I'm guessing blue1 has done this before. How about more info on the different rod ends? Are the widths arbitrary or are they based on differnet years or what?