Idahoctsv

Hey guys, so I have an lq4 and I want to replace conn rods and pistons with forged for turbo build. I want to keep stock bore and stroke but can't really find anything except .005 bore. I don't really want to bore it out. Does anybody know where I can find some?

Idahoctsv

Anybody?

KCS

iTrader: (20)

Seriously? You couldn't find anything?

Idahoctsv

Nope. I've been looking on wiseco, lunati, mahle, etc. do you know where?

Old Geezer

iTrader: (3)

A used engine getting new pistons should be honed, anyway.
NP honing to fit the .005 overs. That will allow for adjusting clearances, providing a true bore, and the correct finish for new rings.

KCS

iTrader: (20)

I see several...

Wiseco

redtan

iTrader: (5)

0.005 over is not boring, that's just a cleanup hone. And it's always a good idea to do a light hone on the cylinders to ensure the surface is even and smooth.

The LQ4 block has plenty of room to go in bore size, so don't be afraid to clean it up 0.005 for a nice good fit on the new pistons.

Sean At CBM

Manley makes a few different ones! They are 4.001 bore which is pretty close to stock. Im sure a worn out block will measure .001 more after thousands of miles. Like the other guys said though, its a better idea to go bigger to make sure those cylinder walls aren't out of round!

-4cc dish 592501c-8
-10cc dish 596101c-8
-18cc dish 596901c-8

Fry_

Sorry if I'm wrong, but it sound's like your just trying to be cheap and don't want to pay a machine shop. Your going to be paying one anyway to balance your crank for you new rods and pistons (really hoping you knew that because if not you really shouldn't be building a motor) so you may as well pay them to do it right especially on a FI build where your even more likely to be paying to do it twice if you f*** it up.

Idahoctsv

Well wrong you are yes. And I don't know everything I mean I'm 19 and still learning alot more about engines then I used to and understand the basics now I'm learning more in depth of building one but ill get there hopefully. And thanks guys for helping me out.

2000PewterT/A

Simple answer, don't skimp on parts, pay for the machining, buy the right pistons, balance the rotating assembly, and be done with it. May cost more up front but it will save you money down the road.

foxls1

iTrader: (2)

Mahle make stock bore forged pistons....ask me how I know
using eagle 6.125 rods

foxls1

iTrader: (2)

BUT while its apart might as well go bigger, the pistons are going to cost about the same anyway, again ask me how I know, lol