eclipse 95 GST = 4g63? (super newb)

[kerupt]

hello all great community. Well basically I have to do an engine swap on my 95 eclipse GST and the mechanic wants way to much for a used engine so decided to get one myself.

From what ive read i think the turbo eclipse 95 uses 4g63? is this correct? The problem is the motors i see on ebay motors and stuff that say 4g63 , says its for 1st generation eclipses up to 94. So I am a little confused.

Any help would be appreciated and any links or suggestions where to look

[kjewer1]

You should be looking for 4g63. If you want it to drop right in look for 2g stuff (95-99, 98-99 prefereably).

[kerupt]

so there is two engines with the same model number of 4g63?

one 4g63 that fits into up to 94 (1st generaltion )

and another 4g63 that fits into 95-99?

[kjewer1]

The 90-92 is the infamous 6 bolt motor, there is a 93-94 7 bolt, and the 95-99 7 bolts.

[kerupt]

so keywords to be looking for is 7bolt and 4g63? thanks much

[kjewer1]

Make sure its a 95-99 though, the 93-94 is the same block IIRC, but some of the front components may not work with the 2g crank sensor and stuff.

[joemathews]

I feel like we should go ahead and warn him about crankwalk...

Some 7 bolt motors (the ones that will drop right into 95-99 turbo eclipses) came from the factory with a defect in the crankshaft, which causes it to "walk" or develop excessive play, which kills the bottom end of your motor.

A 6 bolt motor (same 4g63, just from the older eclipse/talon/lasers) can be swapped into your car with a few simple adjustments. Kevin or Jake or a few of the other guys can better explain the 6 bolt swap or refer you to the proper resources.

Very few 6 bolt motors crankwalk. I just felt like I should tell you this, since you are spending a lot of money on a new motor, and if you put in a 7 bolt and it crankwalks in 20,000 miles, you will NOT be a happy camper .

[joemathews]

Originally Posted by 95 GSXracer

The 90-92 is the infamous 6 bolt motor, there is a 93-94 7 bolt, and the 95-99 7 bolts.

And Kevin I think the 7 bolt motor is the more infamous of the two (unless you're a Honduh junkie)! The 6 bolt motor should be famous .

[helliviknow]

wow i went all this time thinkin all 1g's were 6 bolts.. learn somethin new everyday i guess.. peace

[kjewer1]

Originally Posted by joemathews

And Kevin I think the 7 bolt motor is the more infamous of the two (unless you're a Honduh junkie)! The 6 bolt motor should be famous .

Infamous because it makes over 500 whp on stock internals and smokes fools like a champ

I dont like to recomend a 6 bolt swap unless the person is going to DSMlink. The baro wire mod works for most people, especially on smaler turbos, but I dont like it.