EK7_DriftMania

Has anyone change their stock pistons for a higher compression one, if so please post the following:

- cost of total setup (pistons, labour...)
- hp gains
- drivability (is it smooth, ever there any bad idles)

Thinging of going with this setup - 10.4:1 or 11.0:1 compression.

Anyone have any info at all please post.

Thank you

ryuujin

what engine is this in? Well lets say this is a B16....and if you talking a 10.4 compression you won't even need to change pistons, all you need is some JDM SiR II cams that produce 170hp

That in it's stock form is at 10.4 already...

anyhow, that's my share of knowledge, but it'd help if you told us what application your plans are going to

that'd shed more light for the gurus

EK7_DriftMania

Sorry about that guess I was not clear.

I am not planning to change the appreance of the engines in any form or manner, just to throw the insurance and cops off my back. That is why the engine needs to be stock looking, I figure the only way to gain more power is through internal mods, not looking for big power, b/c I am not into drag racing with a civic, not meant for it. Looking to gain 10-20 hp total.

Specs
- SOHC non-vtec (if the plan does not work out, them the swap would be for a SOHC Vti or the Si)

- I have a custom build ram air box attached to the intake - with insulation on the intake tube. Mine intake manifold is a carborator look-a-like setup, meaning the filter is on top of the throttle body, the ram air charging makes power at any power range. The setup looks dangerous at first, b/c it looks as if the filter elements can't take the extra pressure. When I took the stock paper element out and turned it over, there were some scorched marks on it. I got this idea from American and BMW intake setups, the "ram box" was from GT racing car, where one of the headlights was removed to fit the intake. I did not remove my headlights, its hard to explain the box, lets say that it is attached to the radiator and the inner car walls.

- The rest is all ignition works

I hope I am not too boring...

Jugglez

You're looking at alot of money to have the motor pulled, stripped apart and pistons swapped, and then have the motor put back in. Anytime you rip apart the motor you should change all bearings, bolts, gaskets and have the cylinders at least mirror honed and checked for roundness, and have the block and head machined. You are looking at a considerable amount of money here just to replace the piston. For less money you could get the SOHC VTEC motor and have more power.

And stay away from the SOHC Vti motor (JDM D15B) unless you can get the stock ecu for it.

For slightly higher compression and lower cost you could get your head milled and port and polished... that'll help maintain the "stock look" you want.. but again, you won't be as fast as a similarly modded SOHC VTEC motor.

EK7_DriftMania

Your right about everything man, thanks for the info.

You think I can get the Vtech motor and swap it with my stock intake manifold (the thing that looks like a carborator setup).

I did not consider the expenses of machining etc... I know that I have to change the gaskets and all.

Thanks again, I'll definitely look for a Vtec motor. With some cam gear changes etc...

imported_JookSingKid

Search the internet...

speak to those who only know the legend of one of the first honda frankenstein motors...

Seek out the power of the single cam...

imported_SW20 MR2

If you're gonna end up pulling the motor, you might as well get something better. B18B's and B20's can be had for cheap.

EK7_DriftMania

It has nothing to do with the price, if I want to do some crazy swap, it would not be type R or Prelude, It would be accord euro R or the Indy cart 1.6L engine that revs up to 12,000 rpm or get a used turbo and rebuild for with a setting of 15 psi or higher but that is not want I am looking for. If I want something really fast it would not be a honda. Please read some of the previous post, but thanks for your input.

imported_SW20 MR2

My point is, why would you take the motor out to replace the pistons? You can swap in a cheap B18B or B20 (notice these are not high performance motors) for basically the same price as replacing the pistons on the stock motor. Your car is not going to be really fast with either of these motors. You will just have a little more power and torque.

EK7_DriftMania

I see what you are saying, I do agree. But those motors won't fit exactly and that can be very expensive. There a guy that works at station 28, he had a civic seden installed with a GS-R and it cost them $10K.

You guys are right, the pistons are a waste of time and money, so I will be looking for a new motor soon.

imported_SW20 MR2

I'm not talking about a GS-R motor here. You should be able to find a GS-R motor fully installed for about $6k including labour and everything. But anyways, that's besides the point. You can sometimes find B18B/B20 motors for $1k or so, and after installation and everything, you should be around $2k. It's not that expensive, and you'll get exactly what you're looking for.