- Jun 12, 2014
Japan / Mexico,
Not only the compression height. Also need to machine the small end of rods for the pistons, like 2G pistons on 6 bolt rods. And use a thicker head gasket to lower the compression ratio and to have a sufficient piston to valve clearance. The compression ratio goes around 11.6 if use the standard .051" cometic head gasket. I set to 10.5:1.All Over is bolt on?
Yes, I am. Excuse me, have we met before?Eres Hiroshi?
I used a DNJ Engine Components piston kit, costs around $220 with OEM piston rings. So quality is good. You can find cheaper one on eBay about a half price. But I did not use them because I was not sure about the quality. Some Honda pistons also can be used but they are not designed for turbo engine, so I chose Genesis 2.0T pistons. Since the pistons and the rings are designed for turbo engine. The piston size is 86.00mm. And this piston can not be used for 2.4L because this piston's compression height is lower than 2.4L (4G64) piston's compression height.How much That pistons cost?, they see Good to a 2.4 piston alternative With some Over size, wich size are these 86 or 86.5?
Ahhh OK so probably we know each other in local or facebook. PM me please!También soy de México por eso te preguntaba
For this project, the piston's specs needed to be 85.00-86.00mm and 22mm wrist pin and the compression height 1.13" or a little bit higher than 1.13" to machine down. Honda's F22 pistons have the numbers very close. So I checked F22 pistons but they were cast. I am not sure about all Honda's pistons though.I was told by a honda guy that all honda engines use forged internals factory, is there any truth to this or is it specific engines or something? I actually have no idea as I don't mess with hondas.
The comp height of 2.3L (4g63 block + 150mm rod +100mm crank) is 1.13". The Genesis coupe 2.0T pistons have approximately 1.17" height (I used a cheap digital vernier caliper, so not super exactly). So the pistons need to be machined down about 1mm / .040".Good find.
So what is the comp height 1.13? with 22mm pin diameter, do you know the stock dome height.
Yeah, actually I was planning this for a non turbo 2.3 stroker but since this car is my daily drive, I couldn't wait to prepare all necessary parts. So I decided to go for turbo setup with lowering the compression ratio.This looks like a good option for an n/a motor.
Yes of course Tony, it has been running for 6+ years since I built this engine. This 2g and a 1.7L Civic is my daily car. In this year mainly I am using the civic since gasoline got expensive. But I recently am motivated to drive the 2g more, so just for in case I am replacing the timing belts and pulleys as regular maintenance before restart to drive this 2g more often.So this car is running?
Fun to drive, the 16g spool like a 14b in a 2.3L. It was just out of curiosity. I wanted to see myself how it would work this setup, so I built it.How do you like the set up and how in the world did you figure this out?
I posted this here in 2017 but this was done in 2016.I didn’t see the dates of the post
A little bit looser than the stock PTW clearance. Where I live is pretty hot, one of the hottest city in the world, so I always prefer loose side but it's still much tighter than common 2618 forged piston's clearance.Are you running a stock piston to wall clearance
You also have an option to go with 4032 forged pistons that would allow you to have much tighter clearance than 2618 pistons.I would sooner try to improve the low rpm torque and throttle response over more top end. Hadn’t considered it seriously because it seemed like forged pistons were the only option for stroker. My impression is that forged have to be set looser in the bores, and consequently not great longevity.
That's my plan on this 2g. I care more about low/mid torque than top end power. I even barely do WOT on this 2g.I use my car for dd, and not planning to increase power much above stock