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1G G4cs Local find

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SasaniFab

Proven Member
2,433
782
Dec 1, 2013
Mexico, Connecticut
Figured I post this up as I’m sure some of you would appreciate it. Motor had 58k original miles of it. Got it for a steal
 

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So is it a big bore version of a 4g block? Thats what it looks like but I wasn't familiar with it. Nice snag anyway if it was a steal!
 
I have two others on the way. What u guys think .... destroked 2.1l auto of 2.4 l auto . I’m thinking 2.4 as I’m finding these auto transmission are a pain in the ass to get shifting quickly at those Rpms with the shift box. I notice the engine hits the rev limiter a time or two occasionally When I’m really ripping it.
 
I'm surprised no noobs have come on here posting that it's a 4g37 LOL, but nice find i prefer the g64b or the early 4g64 6 bolts i recently pulled the earliest 2.4 mitsu offered in the us out of an "85 galant.
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I'm surprised no noobs have come on here posting that it's a 4g37 LOL, but nice find i prefer the g64b or the early 4g64 6 bolts i recently pulled the earliest 2.4 mitsu offered in the us out of an "85 galant.
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Wish I'd known the g64b was a viability a couple years ago, there were 3 of them at my local yards, all complete. I didn't know at the time they were even a usable option or I would've grabbed them.

It's funny I've seen more 2.4 6 bolts being found lately than ever. I recently got my second from a 92 expo, then these two. Pretty cool!

Personally I'd go for a 2.4 in the auto, 2.1 destroker needs to be behind a manual, preferably a dog box. Lightning quick shifts for those stratospheric rpms.
 
I thought G64B was a wide block. I have seen some in the mini trucks but never thought about being the same as the DSM.

I do know we can use the cranks which is the same (6 bolt 4G64) but never knew it was a narrow block.

I've seen this info tossed around online, but i remember visually seeing 3 fwd Colt vistas with g64b's in them. Scraped the tags clean to see if one was a 4g64 mark, but they all said g64b, so I wrote wrote them off not thinking about it. Funny thing is they Colt vista wasn't equipped with the 2.4 from the factory.

Thinking back, it's strange that 3 Colt vistas all showed up at the junk yard at the same time...maybe someone unsuccessful swapped them and decided they'd had enough?
 
I've seen this info tossed around online, but i remember visually seeing 3 fwd Colt vistas with g64b's in them. Scraped the tags clean to see if one was a 4g64 mark, but they all said g64b, so I wrote wrote them off not thinking about it. Funny thing is they Colt vista wasn't equipped with the 2.4 from the factory.

Thinking back, it's strange that 3 Colt vistas all showed up at the junk yard at the same time...maybe someone unsuccessful swapped them and decided they'd had enough?

They could have been G63B colt vistas the "84-"88 are all G63B if they are all newer 91-92 vans my guess would be that they are import motors the USDM cars had no reason to run the older G64B engine code anymore.

I thought G64B was a wide block. I have seen some in the mini trucks but never thought about being the same as the DSM.

I do know we can use the cranks which is the same (6 bolt 4G64) but never knew it was a narrow block.
The G64B Is a wide block on the van and trucks, so the blocks won't bolt on dsm transmissions, however in the early and now extremely rare "85-"87 boxy looking 5th gen Galants that had fwd with the G64B 2.4 engine are narrow blocks engines, and they do bolt up to dsm transmissions.
 
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So the two 87 galant 2.4 engines should be good to go , they want 300 bucks



They could have been G63B colt vistas the "84-"88 are all G63B if they are all newer 91-92 vans my guess would be that they are import motors the USDM cars had no reason to run the older G64B engine code anymore.


The G64B Is a wide block on the van and trucks, so the blocks won't bolt on dsm transmissions, however in the early and now extremely rare "85-"87 boxy looking 5th gen Galants that had fwd with the G64B 2.4 engine are narrow blocks engines, and they do bolt up to dsm transmissions.
 
if they are already pulled from the cars and the transmissions removed, the best way to verify that they are Narrow blocks is to bring a basic tape measure with you, and measure the bell housing dowel bolt centers narrow blocks are 12.75 inches across
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This image above is the G64B i just recently got, and sure enough it is a Narrow block the wide blocks will measure 13.75 across from bolt centers, and I have never seen a 6 bolt fwd wide block Mitsubishi so if you know the car they came from is fwd they are vary likely Narrow blocks and well worth $300 provided that they are in good shape.
 
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if they are already pulled from the cars and the transmissions removed, the best way to verify that they are Narrow blocks is to bring a basic tape measure with you, and measure the bell housing dowel bolt centers narrow blocks are 12.75 inches across
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This image above is the G64B i just recently got, and sure enough it is a Narrow block the wide blocks will measure 13.75 across from bolt centers, and I have never seen a 6 bolt fwd wide block Mitsubishi so if you know the car they came from is fwd they are vary likely Narrow blocks and well worth $300 provided that they are in good shape.
So I just verified that the block is from a 1987 Mitsubishi Galant fwd, they want 300 bucks. It’s about an hour away. Might be worth the travel
 
She looks awesome
 

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30+ year old main bearings .... I wonder if these straight cut gears can be used in a 4g63 pump ?
 

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Doesn’t anyone know off the top of their head if the g4cs crank is forged ? I haven’t taken a look at the parting line yet . I know you can get a 7 bolt 4g64 crank that is forged.
 
I'm not sure if they are forged or not, it is a good question I know both are nitrided, however I will end 1 misconception of Hyundai G4CS cranks being sourced from japan, long story short they are not, they may have the same function as their mitsu counterparts, but they have different part numbers the G4CS crank is part number 2311032600, where the G64B/4G64 "85-"92 used part number MD080691, back when Hyundai started making cars they paid to license Mitsubishi to design engines for them, and they in turn gave the plans to Hyundai for many of their early engines, and then Hyundai made them in South Korea on their own for their own vehicles.
 
I'm not sure if they are forged or not, it is a good question I know both are nitrided, however I will end 1 misconception of Hyundai G4CS cranks being sourced from japan, long story short they are not, they may have the same function as their mitsu counterparts, but they have different part numbers the G4CS crank is part number 2311032600, where the G64B/4G64 "85-"92 used part number MD080691, back when Hyundai started making cars they paid to license Mitsubishi to design engines for them, and they in turn gave the plans to Hyundai for many of their early engines, and then Hyundai made them in South Korea on their own for their own vehicles.
Based on what i see I would say without a doubt the crank is forged. The rods and crank have a flat wide parting line. Does not look cast
 
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