4G63 swap headache

[99Mitsu]

i've been on JDM and JEI for a 4G63 swap out of an Evo III, but what keeps coming up is I see a non-turbo 4G63 (block only) for about $700 and the turbo version of that is around $1500. Can someone please tell me why the turbo is $800 more than the non-turbo. It just doens't seem right

Thank you
~mitsu

 

[spyderking99]

just build a 6 bolt and save yourself the money

 

[magna]

i've been on JDM and JEI for a 4G63 swap out of an Evo III, but what keeps coming up is I see a non-turbo 4G63 (block only) for about $700 and the turbo version of that is around $1500. Can someone please tell me why the turbo is $800 more than the non-turbo. It just doens't seem right

Thank you
~mitsu

The answer is simple and short - Demand.

 

[99Mitsu]

would it be cheaper to just buy a non-turbo and convert it or should i just buy the turbo engine?

 

[Phantom DSM]

I dont know much specifics, but im positive the non-turbo motor will have high compression pistons (correct me if im wrong guys). You have to ask yourself what kind of power you want, or just an achievment for swapping in a JDM motor.

I'am thinking you are gonna limit yourself on low boost because the high compression will not handle more than 7, 8, or 9 psi . Sounds like a b16 honda story.
Either you shell out the money for a turbo motor meant to handle boost, or just do a normal 6 bolt motor . Build it with some power capability, pisons rods, and get a jdm valvecover. I dont mean to insult you, i just hate to see you with a headache over an issue like this buddy.

 

[ba109296]

When you decide to use each one you will have to decide alot of other things. What gas your using, what tuning device, what turbo, and what your goals are.
If you want to do it easy just do a 6 bolt and be done with it.

 

[Lost_sol]

would it be cheaper to just buy a non-turbo and convert it or should i just buy the turbo engine?

Just buy the turbo engine
Aside from the NA engine having a higher compression, which is not necessarily a bad thing. It is the piston design them selfs in the NA motor that make the NA motor a poor candidate for boost.

 

[99Mitsu]

When you decide to use each one you will have to decide alot of other things. What gas your using, what tuning device, what turbo, and what your goals are.
If you want to do it easy just do a 6 bolt and be done with it.

My goal for the swap was build a high proformance motor. I am thinking of going 16g for my turbo. But my current engine is burning oil and needs rings and/or valve work so I am going to park it in fall and start building a new motor for it.

If I knew how to do a 6 bolt I probably would, but I'm still a noob in the import tuner world

 

[rush2252]

If you havent done a compression test yet do it! It could be something simple like a bad pcv system. Alot of issues similar to this are assumed to be rings turbos etc and end up being pcv valve. See if you have large amounts of oil in the IC piping if you do its not the rings

If its valve stem seals you can replace these with the head on the car. There is a how to somewhere. You simply run compressed air into the cylinders to hold the valves up while replacing the seals. Either way if your assuming the motor is bad dont. Ive seen alot of 150k + motors that still have great compression.

Im currently running around 15psi on a 7bolt with 140k. Im running the small 16g and have had no issues. Its a big step from the T25.



Kolby

 

[GalantGreg]

My motor started with a 91 NT Motor. I looked at the bottom ends of my original motor out of my GSt, and the NT motor, and there was no difference in them whe they were bare blocks. I didn't use any OE equipment when I did my rebuild.

 

[99Mitsu]

Well I was going to park it in winter anyway because Eclipse + snow = bad. I was just going to drive my DSM in Spring and Summer. But I was looking at the prespective that the 4G63 engine from an Evo III came with 270hp stock where my eclipse only came with 210hp stock. I'm probably putting out about 230hp from the exhaust and air filter upgrade. Also I have heard that engines from Japan are more aggressively tuned.

I'm still debating weather I should get a turbo or NA 4G63

~mitsu

 

[Mrdrd_Laser]

I've ran n/t pistons for quite a while in two different cars now and havent had any problems with them. Most people that break them have a shitty tune and get lots of knock. My car is on 10spi right now with n/t pistons (9:1CR) tuned with an SAFC and runs a high 13 1/4 miles with stock sidemount and rubber inteercooler pipes.

 

[VancTalonAWD]

Aside from the pistons the other difference between a turbo and NA motor are the piston oil coolers. NA motors don't have the piston oil coolers.

 

[Mrdrd_Laser]

Aside from the pistons the other difference between a turbo and NA motor are the piston oil coolers. NA motors don't have the piston oil coolers.

The oil squirters dont make a bit of difference, not that I can tell anyways. Get an n/t block throw some turbo pistons in it and call it a day.