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AlphaVision
10-08-2010, 03:38 AM
Hello to all.


My name is Leo and I am into Eclipses. I drive a GSX and have plenty of parts from my builds. I was wondering if I can use them into a SOHC 4G63 galant.

I've read a lot through the site but didn't find exact answers to my questions. It seems that converting from Galant SOHC to Galant DOHC is smooth and easy (the heads are interchangeable). But how about Eclipse head?

my questions are:

1. What are the differences between SOHC 4G63 block and the Eclipse block (7 and 7 bolt)

2. Can I get a head and pistons from an Eclipse 6-bolt or 7-bolt (which one) and put them onto the SOHC block. Also will the rods from 6 or 7-bolt eclispe fit on the SOHC block

3. Can the entire engie be swapped with an Eclipse engine? What I wonder is will the tranny fit the eclipse block or they are different. The transmission on the galant is w5m31


Thank you.
Leo
Shadow19
10-08-2010, 06:47 AM
Can you tell us which galant youre talking about? Also w5m31 doesnt sound right for a galant (atleast the 7g) unless its awd.
AlphaVision
10-08-2010, 06:52 AM
It's this one (sixth generation)
http://en.wikipedia.org/wiki/Mitsubishi_Galant#Sixth_generation

It is a 4G63 SOHC All-Wheel-Drive.
allrice4g64
10-08-2010, 08:12 AM
They made a 63 in a galant? they made a 63 sohc? They made a awd galant and its not a vr4? mitsubishi is really wierd.
AlphaVision
10-08-2010, 08:37 AM
I guess so :)

There are even DOHC AWD models, but with the later 4G63 (like eclipse) again non-turbo...
Galanttuner10
10-08-2010, 11:41 AM
They made a 63 in a galant? they made a 63 sohc? They made a awd galant and its not a vr4? mitsubishi is really wierd.

they did haha just not for our years. there was the SOHC AWD which i dont remember if it was still considered a galant gsx but i know the DOHC AWD 6th gen was call a galant GSX. then of course the vr4

alright, the heads are all interchangeable. any 4g6x head will go on any 4g6x block some with more modification than others. now it is true a DOHC is much better and worth while to do. now is your single cam an 8 valve or 16 valve?

you may be better off swithing a non turbo dohc 63 in in if you can find one for a good deal or even a 4g63t.

differences in the block will be minimal, maybe a couple oil passages the SOHC uses that the DOHC doesnt like we encounter on our 64 blocks.

all 7 bolt turbo and non turbo rods are the same. the non turbo pistons have a 9.0 compression ratio with the DOHC so those are fine

and your tranny is fine as all the blocks use the same bolt pattern for the tranny
kolio
10-08-2010, 11:52 AM
1G's and 6G's have a diffrent motor mount set up than a 2G eclipse/7G. you can get the tranny on the block fine, but the mounts that hold it to the car are different

what year eclipse are you trying to swap from?

the general rule is it's almost a direct swap between a 1G to 6G and 2G to a 7G
Galanttuner10
10-08-2010, 12:10 PM
1G's and 6G's have a diffrent motor mount set up than a 2G eclipse/7G. you can get the tranny on the block fine, but the mounts that hold it to the car are different

what year eclipse are you trying to swap from?

the general rule is it's almost a direct swap between a 1G to 6G and 2G to a 7G


i wrote all of that not even thinking of it possibly being a 2g. but i should have asked that question haha
kolio
10-08-2010, 02:29 PM
i wrote all of that not even thinking of it possibly being a 2g. but i should have asked that question haha

i got you chris, don't worry
AlphaVision
10-09-2010, 05:24 AM
That's some good news that heads are interchangeable, but i will just throw in the long block of the 1G Turbo eclipse. My Eclipse is a 2G but with a 1G 6-bolt motor and I have done an engine job with forged internals so I have a lot of stock 1G parts.

I found pictures of the headgaskets of 1G Eclipse and 6G Galant. They are the same in dimensions but the SOHC headgasket has like only half of the oil/water passages. I will post a picture of the two compared next week because it is on my work laptop.

I will use the Galant tranny and put in a 1G eclipse block, ECU and wiring harness So I will get something like a 1G GSX Eclipse in 6G Galant body. Only the tranny will be different. Do you know what the front/rear wheel ratio is on that galant?
Galanttuner10
10-09-2010, 10:51 PM
no idea on the wheel ratios, but i know that if you swap to a 1g tranny you need to change the rear diff so just stick with the stock tranny.
AlphaVision
10-10-2010, 06:57 AM
Well the plan that stands out for now is just to drop in 1G Turbo engine, harness and ECU and drive it like that. I will not change the tranny for now. I think it may be like the 1G AWD non-turbos sold in Europe. They are 60-40 or 70-30 to the front...at least they have a less stiffer viscous coupler and smaller in sise (slimmer)