08bluegts1

Well I guess getting my turbo repaired didnt fix my problem. Im still smoking bad so I guess I cracked a piston ring or something. I was wondering will the evo x piston and rings be a direct fit for the N/A 4b11 engine? If so, I was going to just put the evo piston and rings in my car and up the boost to about 18psi or so.

yitzac1990

iTrader: (16)

nope.

08bluegts1

Why? It's the same motor other than the evo has forged internals. So why couldn't I use those forged internals?

villero1834

iTrader: (1)

Its a different crank but if u get only the pistons it should work as long as u get the same bore size but it might change ur cr but dont quote on me im just a cableguy lol

yitzac1990

iTrader: (16)

this wont work either. they are actually completely different motors. the evo X pistons wont work because the rod pin is a different size. You would have to get new rods as well. that gives you 2 options:

1. Custom rods to fit the evo pistons and lancer crank

2. evo X rods, which means you have to do other things:
a. get the evo crank and machine your block to fit the evo crank, OR
b. get the evo crank AND evo X block, but this means:
- you dont know if the accessories (AC, PS, Alternator, etc.) will bolt on

yeah, good luck dropping evo X pistons in trust me, I've looked into it.

dadsgts

iTrader: (2)

evo x pistons are 23mm wrist pin the lancer na is a 21mm wrist pin. Also the end of the rod the goes to the crank is diffrent. Best solution zack is to contact wiesco and get a custom piston set $600 from them. have them build 9:5 pistons and get a 1mm head gasket. that would put you around 8:8-9:1. The rods and crank and forged in our motors however the pistons are a light wieght alloy. Upgrading just the pistons would let you run a safe 16-18 psi and net you around 300whp easily. The pistons in the evo are smaller in height and they also use a 1mm head gasket we run taller pistons and thinner head gaskets. The head flows the same as the evo. The evo has a diffrent head gasket due to the extra cooling passages that the 4b11 na does not have. A custom gasket would be your only choice. If you really plsn on redoing the pistons pick up a 4b12 crank and rods. Bore your motor out .030 and have a nice 2.3 stroker 4b11 na turbo. 350whp all day long.

villero1834

iTrader: (1)

ahhh man u make it sound soo easy , amazing un maestro

LiX

iTrader: (1)

Why not to use NA 4B11 head gasket with Evo X internals on NA 4B11 block? It should fit properly.