Pistons & Rod combo or piston's

[Alpha D]

That sounds retarded... I've never heard of anyone doing this on a 4g63, piston slap would be ridiculous!

Alpha, I have 3 that are in very good shape, pretty sure they are like an "OE" replacement but are .020 over. If they could be of any use to you to make a good set out of the originals. Let me know. They were in a block that a valve came loose in one of the cylinders and trashed one piston. They are on 6 bolt big rods. I can get pictures tomorrow night or monday.


Yeah no offense or disrespect, but thats all sorts of Ghetto...that would be a sure shot gamble you dont want to take. Not saying it wont work might just be a little to far from my goal.

As far as the 3 pistons go, let me check with goat blower i like the fact he has a complete set you know that are ready to drop in since i have a set of bearings. If for what ever reason they dont work ill be coming to see you :)!

[Alpha D]

I've got a set of new OEM .020" over 1G pistons and rings mounted on 6-bolt rods. A set of rod bearings away from dropping in. $100 cash firm.

Steve you will be receiving an incoming Text within the next few hours. Thank you guys for all the quick responses!

[93gtpeater]

I was pulling your chain. Haha. Make sure you check your bore size before buying anything.

[Alpha D]

I was pulling your chain. Haha. Make sure you check your bore size before buying anything.


-.- what do you think this is MNHONDA's! Jk lol

[dsmreck]

ive got a set of 1g big rods with 2g pistons and new rings in box. pm me if you want them. i have pics on my for sale add or i can text them.

the reason you want pistons b4 you bore is each piston may have a variance. so 20 over what? stock bore or where it was or to a .20 over piston. you may end up with a .20 over piston that has hugr piston to wall because not all things are perfect.

[Pushit2.0]

He bought the motor from me, they were new OE re placement .020 over pistons. We did the bore/hone at my work. I think we set ptw to .0025"-.003".

[dsmreck]

there ya go. lucky you have someone to give you that answer. again if you have the money 1g big rods 2g npr pistons new arp bolts new rings..

[Goat Blower]

the reason you want pistons b4 you bore is each piston may have a variance. so 20 over what? stock bore or where it was or to a .20 over piston. you may end up with a .20 over piston that has hugr piston to wall because not all things are perfect.

I can't quite understand what you're getting at here, but .020" over means beyond the stock bore, on these engines, and every other one I've ever heard of. If you want to get technical, "import" motors such as these go by mm instead of inches, so it's actually .50 mm over. Same thing though.

Every time I've had machine work done, my machinist measures all four pistons, takes the largest one, and adds the appropriate PtW clearance for all four holes based on that. PtW clearance is based on the piston material, or manufacturers specs for aftermarket, and I used to go even a little looser than that back in the day. Boring each hole to exactly the same PtW clearance for each individual piston is way overkill.

Trust me, the machine work we have done for these is generally better than what the factory ever did, and those engines lasted 150-200k miles and have withstood 500+ horsepower. Having a couple ten thousandths variance in PtW clearance is the last thing I'd worry about in a rebuild.

[dsmreck]

ok but what if its too tight? ptw is deff important when doing a build. to loose it will slap and wear early and too tight boom with the right amount of heat and stress. Not saying i'm a no it all just saying no way are all pistons the exact same was all and I feel that ptw should reflect the power/boost you plan on putting down. Maybe i'm completely wrong but i will scrutinize my ptw on my builds.

[Goat Blower]

As I mentioned above, measure the largest piston, bore off of that measurement, the others can only be looser.

Stock pistons don't expand much at all, so being tight isn't much of a concern. Back in the day, JE pistons had a reputation for growing quite a bit because of the material they used, and PtW needed to be really loose to compensate. Needless to say, there was audible piston slap when they were cold.