Thread: In-vehicle ring replacement QR25DE???

I'm in the process of replacing the head gasket on my son's '02 Spec V (go figure) and was wondering if it is possible to replace the piston rings with the engine in the vehicle. It's guzzling oil. I'm figuring I could glaze bust the bores with a flex hone and throw in a new set. Anyone got any insight on this!

no lol

it wuld be soo much eaier with it out of the car... just imagine tearing the whole upper and lower part of the motor just to get the pistons out and so u can hone it from the top...not worth it rele

yea you CAN do it with the engine in the car, but its gonna be a pita! with the engine on a stand you can rotate it with ease

Yeah, if I had my way I would definitely pull the engine but my goal is to get it done fast and cheap. I haven't assessed the situation as far as dropping the pan and junk but I just wanted to know if it's conceivable to do.

yea it can be done, but its gonna be a bitch.

It's not a bitch at all. I know someone that rebuilt his engine in his apartment complex parking lot.

If the car still runs (you haven't torn it down) go to autozone and get some of those plastic ramps and rent the tool to hone the block. Drive the car on the ramps, drain the oil, remove the oil pan and remove the head.

Then remove one of the rod caps, taking note of which way around it goes, and which rod it goes to. It must go back EXACTLY as you removed it.

Then you should be able to remove the piston and rod together from the top of the engine. Hone the block with the tool. Re-ring the piston, clamp the rings, and drop it back in after you wipe some oil onto the cylinder. Repeat 3 more times and shazam you're done.

Originally Posted by QR25DE_SpecV

It's not a bitch at all. I know someone that rebuilt his engine in his apartment complex parking lot.

If the car still runs (you haven't torn it down) go to autozone and get some of those plastic ramps and rent the tool to hone the block. Drive the car on the ramps, drain the oil, remove the oil pan and remove the head.

Then remove one of the rod caps, taking note of which way around it goes, and which rod it goes to. It must go back EXACTLY as you removed it.

Then you should be able to remove the piston and rod together from the top of the engine. Hone the block with the tool. Re-ring the piston, clamp the rings, and drop it back in after you wipe some oil onto the cylinder. Repeat 3 more times and shazam you're done.

youre forgetting about cylinder 1. you have to remove the balance shafts

Bah! That too.

^^ not to be ot but are ur rotors on the wrong side

Originally Posted by 02 VQ35 6SPD..MAXIMA

^^ not to be ot but are ur rotors on the wrong side

Negative

It's not that simple, the way the timing cover is attached is a pain cuz you can't take anything out withou taking it off first, then you gotta take the head off, lower oil pan, balance shaft, upper oil pan, then after which you have access to the rod bolts unbolt them remember the sequences of every nut and bolt and where they came from, then with a rubber mallet and a thin piece of wood you should be able to tap the pistons from the bottom out the top