...I...wow... all DSM engines are 4g63t's reguardless of what year they are. Some people just don't put the T when saying 4g63... The only nonturbo eclipse motor there is besides the Laser's 1.8 is the 2.0 non turbo(420a)

Its fine , There are alot dumber which pop up . You might want to look through vfaq but the short version is .

1g 89 - 94 = 4g63 is the N/A motor .. 4g63t is of course the turbo . 2g 95-99 - 420a is the N/a motor and the 4g63t ( with some differences . 7bolt compared to the 1g 6bolt )

there are some differences and alot of details im leaving out but thats "kind of" it.

Syndicate said:

Its fine , There are alot dumber which pop up . You might want to look through vfaq but the short version is .

1g 89 - 94 = 4g63 is the N/A motor .. 4g63t is of course the turbo . 2g 95-99 - 420a is the N/a motor and the 4g63t ( with some differences . 7bolt compared to the 1g 6bolt )

there are some differences and alot of details im leaving out but thats "kind of" it.

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By N/A motor I'm gonna say that means non-turbo? And thanks for the replies, I'd rather ask questions to know something for sure than be leary about it if I cannot find a thread already answering my question.

N/A = Naturally Aspirated

Hell I didn't understand what the hell he was talking about

my98GST said:

...I...wow... all DSM engines are 4g63t's reguardless of what year they are. Some people just don't put the T when saying 4g63... The only nonturbo eclipse motor there is besides the Laser's 1.8 is the 2.0 non turbo(420a)

Click to expand...

This is incorrect. There are 2.0 non-turbo (naturally aspirated) 4G63's from years 89-94. These blocks are exactly the same as the 4G63T blocks except for the fact that they are missing oil squirters (they even have a spot for the knock sensor on the back). I pull these non turbo blocks from the junkyard and use them for turbo blocks.

1g=
4g37- Found in some 1g n/t cars. It is a 1.8 sohc engine
4g63- Found in n/t cars and some galants, almost identical to the 4g63t but higher compression, weaker pistons, no oil squirters, and slightly less aggressive cams.
4g63t- Found in all Laser rs turbos, talon tsi's, eclipse gs turbos, eclipse gsx's, and gvr4's.

2g=
420- Found in all 2g usdm n/t hardtop dsm's.
4g63- Found in the edm n/t dsm's that made it to Europe
4g63t- Found in all Eclipse gst's, gsx's, and Eagle talon tsi's.
4g64- Found in all n/t spyders and most 94^ galants.

The plain 4g63 is n/t where the 4g63t is turbo. A lot of the time, the 2g 4g63 isnt designated with the t suffix because the 4g63 n/t wasnt offered in the states since 94.

92awddsm said:

1g=
4g37- Found in some 1g n/t cars. It is a 1.8 sohc engine
4g63- Found in n/t cars and some galants, almost identical to the 4g63t but higher compression, weaker pistons, no oil squirters, and slightly less aggressive cams.
4g63t- Found in all Laser rs turbos, talon tsi's, eclipse gs turbos, eclipse gsx's, and gvr4's.

2g=
420- Found in all 2g usdm n/t hardtop dsm's.
4g63- Found in the edm n/t dsm's that made it to Europe
4g63t- Found in all Eclipse gst's, gsx's, and Eagle talon tsi's.
4g64- Found in all n/t spyders and most 94^ galants.

The plain 4g63 is n/t where the 4g63t is turbo. A lot of the time, the 2g 4g63 isnt designated with the t suffix because the 4g63 n/t wasnt offered in the states since 94.

Click to expand...

Very nice post. I was always in assumption that the 4G63 and 4G63T were carbon copies, with the exception being the turbo on designated models.

MILITISINVICTUS said:

Sonic, when you use these blocks, what do you find in regards to the oil filter housings? Have you noticed that they vary in what type of housing they use, or are perhaps exclusively either the 6 or 7 bolt type?

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I do remember seeing some bizarre oil filter housings, however I just removed them and replaced them with ones I took off a turbo engine (they bolt right on). The only thing I can see that is really different on the blocks themselves is the oil squirters. The pistons are also different (non turbo pistons are higher compression) but the rods (1G big rods) are exactly the same, and I often re-use them in combination with 2G turbo pistons.

sonicnofadz said:

This is incorrect. There are 2.0 non-turbo (naturally aspirated) 4G63's from years 89-94. These blocks are exactly the same as the 4G63T blocks except for the fact that they are missing oil squirters (they even have a spot for the knock sensor on the back). I pull these non turbo blocks from the junkyard and use them for turbo blocks.

Click to expand...

this is part right and part wrong. he is correct that they are ALMOST exactly the same and the N/A doesnt have oil squirters BUT he is incorrect by saying there is a hole there for the knock sensor. the N/A block does have a bung there that needs to be drilled and tapped for a knock sensor. alot of people use the hole for the a/c bracket and have good success while others stress that it needs to be where it was designed to. i personally stick it where it needs to and will be drilling the hole out for my built N/A block.

hope this helps
david...

dnhieu said:

this is part right and part wrong. he is correct that they are ALMOST exactly the same and the N/A doesnt have oil squirters BUT he is incorrect by saying there is a hole there for the knock sensor. the N/A block does have a bung there that needs to be drilled and tapped for a knock sensor. alot of people use the hole for the a/c bracket and have good success while others stress that it needs to be where it was designed to. i personally stick it where it needs to and will be drilling the hole out for my built N/A block.

hope this helps
david...

Click to expand...

Strange, all my NA blocks already have a spot for the knock sensor (already drilled and tapped from the factory)?

Pictures would help solve this... cause I was considering doing the NA 4g63 block swap converting it to a 4g63T...

if your putting your knock sensor below the #3 cylinder over on the top of the #2 cylinder like its supposed to be if i remember i can take pics....

dnhieu said:

the N/A block does have a bung there that needs to be drilled and tapped for a knock sensor. alot of people use the hole for the a/c bracket and have good success while others stress that it needs to be where it was designed to. i personally stick it where it needs to and will be drilling the hole out for my built N/A block.

hope this helps
david...

Click to expand...

Actually, the ks hole in a n/t block is hit or miss. I have seen a couple that are drilled and tapped for the ks but most are not drilled. I have even seen 1 that was drilled but not tapped.

Alright so the main difference is the 4g63 engines block is missing the oil squirters and the 4g63t has them? I get a lot of information from wikipedia and if someone has a few minutes to spare would you mind telling me if the 1g and 2g info is all correct?

alright so the main difference is the 4g63 engines block is missing the oil squirters and the 4g63t has them?

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And that the head stud side vary from 1G to 2G (if I am not mistaken) 7-bolts. Also the 2G 4G63 has accomidations for the Crank Angle Sensor and the internal bearings are different.

Lastly, there are 7-bolt 1G 4G63's (~4/92-95) and 6-bolt 1G 4G63's(89-4/92) depending on the year. They differ internally by crank, rods and bearrings, though the heads are identical.

So there really is 4 flavors of 4G63's domestic to the US:
1) 6-bolt 4G63 N/A
2) 6-bolt 4G63 Turbo (89-4/92)
3) 7-bolt 4G63 Turbo (4/92-95)
4) 7-bolt 4G63 Turbo (95-99)

If I am wrong, someone please correct me so we can fully answer the question.

Note: I am been told by builders if you are going to put a motor in a 2G either:
1) build up #1 with the squirters, lower compression pistons (or 2G pistons), and #2 rods
2) use option #2 and consider simply machining the rods to accept 2G pistons
3) rebuild #4
The 7-bolt 1G is considered a poor donor choice due to its lack of Crank Angle Sensor which can lend to an early diagnosis of Crankwalk prior to it taking full effect. Atleast, that is my understanding.

you bagged that s**t Splitpi.... thats a good explanation. GSX Eclipse, I wouldn't recommend using sites like wikipedia or ask?... Definitely look to DSMtuners for the best advice and information about eclipses, talons, lasers, galants...DSMs. Just from looking through threads (I usually do that), you will find tons of other websites people have created to help individuals with very limited car knowledge, safely maintain and modify their DSM.
Check this website out for good visual knowledge of DSMs, http://members.shaw.ca/dsm.1000q/Engineprimer/index.htm click the car you have and then click on all the different things in the engine bay. It definitely helped me put a name to a part so I actually knew what to look for when reading through threads and hearing part names I didn't even know existed. Though that site is mainly for the engine bay and learning what it contains. Here is a good site to learn about the whole car in general http://www.vfaq.com/. But the best thing about DSMtuners is hearing the advice from people who have had years and years of trial and error and problems, and know what it takes to prevent such and keep incoming enthusiasts informed and ready. I am guessing you are buying a DSM or have already bought one. Congrats, but make sure you read up and explore the possibilities a DSM has to offer. It can have the abilities of any car depending on what mods you go with and your goals for the car. Hope I helped at least a bit. Good luck, search forums.

I am pretty sure the Cams in the N/A 4G63s are different from the 4G63T.

Splitpi. I might be wrong but I'm pretty sure in 4/92-95 the cars came with 4G63T's in 6-Bolt or a 7-Bolt.

FlatBlackAndy said:

I am pretty sure the Cams in the N/A 4G63s are different from the 4G63T.

Click to expand...

Did you figure that out by my 1st post?

1g=
4g37- Found in some 1g n/t cars. It is a 1.8 sohc engine
4g63- Found in n/t cars and some galants, almost identical to the 4g63t but higher compression, weaker pistons, no oil squirters, and slightly less aggressive cams.
4g63t- Found in all Laser rs turbos, talon tsi's, eclipse gs turbos, eclipse gsx's, and gvr4's.

Click to expand...

FlatBlackAndy said:

Splitpi. I might be wrong but I'm pretty sure in 4/92-95 the cars came with 4G63T's in 6-Bolt or a 7-Bolt.

Click to expand...

No, the 6 bolt was taken out of production in early 92. They were not installed in any dsm's after April 1992.

on the id tag on the front of the block by the waterpipe will the tag say 4g63t for a 6bolt or just 4g63?

There other difference on the blocks from the 6-bolt to the 7 various freeze plugs and what not