High compression

[mp3moose]

Well, I just drove home for the shop. I am now offically running high compression and I love it. She is definately faster even in the lower rpms. It took a few days to get everything apart and back together again and with a shattered piston it took even longer. But, all i have to say is that it is definately worth it and I am very pleased.

 

[chdesign]

HC is very nice beetter when tuned....but nothing like the whine of a turbo.

 

[chdesign]

HC is very nice beetter when tuned....but nothing like the whine of a turbo. lol

 

[mp3moose]

I have the 10.7:1 pistons. I took it to my local shop and had a friend do it on the side for $350. We couldn't find new piston rings and since I only have about 12000 miles I just decided to use the original rings. It can be quite a difficult install if you don't have much experience or the right tools for the job. I actually shattered my first original piston trying to get it out.
As for gains....I can't afford a dyno run right now, but I will tell you its significant. Definately feel it was worth the time and money. Next best thing to turbo.
Cheers,
Moose

 

[mikesmazda155]

Sounds awsome moose, are you going to run it at a track for a 1/4 mile time. I think that CHdesign ran a 14.6 NA. I am not sure.

 

[mp3boy1984]

someone has got to get a dyno of these, or atleast can someone find out the zero to 60 time now. Is it in the 6's? Around Michigan we don't have many 1/4 mile tracks, so most of the races are from a stop light to 60 before one person usually backs off. So if anybody could find out the zero to 60 it would be greatly appreciated.

 

[chdesign]

Yeah I ran a 14.6 NA but that was also with a 50 bump of the laughing gas, horrible launch and wheelspin out the ass.

 

[mp3moose]

talk to CH if you want to get a compression set up. I bought everything I need of off him except for the piston rings which I didn't even need for about 300 USD. He might be able to get you the same deal. As for gains, the few mazdas that got these pistons in japan had about 170hp. However, I wouldn't expect a 30 hp increase as they also have different intake and exhaust manifolds, but the pistons are the main ingredient for more HP.
Personally, I am hoping for about 160-165hp with my CAI on higher octane gas. Crank that is.
Cheers,
Moose

 

[RyanJayG]

Has anyone thought of (or tried) to mill the head to raise compression? It certainly wouldn't take very much to raise the ratio from 9:1 to 10.5:1.

while the head is off, you could have it ported and polished, new cams installed. I would bet that there is power to be made in the 2.0L head.

 

[chdesign]

You could mill the head to raise compression but in the future if you ever wanted to go turbo you are SOL you would have to get forged custom pistons. For example if you take 10 thousands off a B16 head on a B16A2 you can bump the compression almost 1 point. It doesn't take much and if you dont' get a competent machine shop to do it with good equipment then you could jump your compression to well over 12:1 and if they make an uneven surface they have to take even more off and at that point you will turn your non-interference FS motor into a interference FS motor.

 

[RyanJayG]

I wouldn't go turbo w/o forged slugs and rods. I am kinda a perfectionist. but even if I was to go forced induction I would probably fab my own supercharger set up. I might even try a whipple supercharger. that would be fun.

besides al you would have to do to lower compression back down is to have a thicker head gasket made up. but by the same token all you would need is a this copper gasket to raise the compression in the first place.

the real point of this post was to find out if anyone has ever ported the head, as this is where real N/A power is made.

 

[chdesign]

ewww whipple charger........that takes me back ROFL...I had a spitfire with a whipple charger man those things suck!

 

[RyanJayG]

how long ago was that car made? hmmmm... whipple chargers don't suck now.

 

[mp3rican007]

N/A Set-up

When you people talk about N/A setups you forget many things. If you want some serious N/A power the head is the place to do it. THe H.C. pistons are good for N/A but without air there is no power.

N/A List
Port n Polish
5 angle valve job
valve springs
retainers
camshafts
cam gears
Port match intake and exhaust ports
Larger throttle body or bore out factory
4-1 or 4-2-1 race header
race catalytic if need cat in certain areas
cold-air intake or ram-air set-up
fuel pressure regulator
upgraded radiator
upgraded cooling fans
High Comp Pistons with piston rings
When i mean high compression i mean between 10.7 and 11.7
Now this setup in a Protege if done right will give you close to 200whp and 190lbs torque.

thats just my 2 cents

 

[DooMer_MP3]

Re: N/A Set-up

...Now this setup in a Protege if done right will give you close to 200whp and 190lbs torque.

thats just my 2 cents

Possibly, but the amount of money spent on this is not feasible compared to a turbo kit - especially if you're not mechanically inclined enough to do a lot of it yourself. Also, you forgot engine management which would be necessary to tune this to anywhere near your 200whp possibility. Holy $$$!

Chris

 

[mp3rican007]

200whp N/A and 200whp turbo are to different things. How many times do you see all motor civics beating a basic bolt on turbo civic. The power bands for both cars are completely different. And the price actually should be less than a complete turbo kit. My estimations on price would be close to 2000. I believe a fmu may be the only thing you wuold need and maybe even not because mp3s run rich, and mp3 ecu is made for all motor not turbo. I am trying to sell my MP3 but if that doesnt work out the list above will definately come into play. The only problem is traction as with any front drive car.

 

[PA_MP3_Man]

It's a company that makes superchargers, like whipple, eaton, just brands man.

 

[mp3boy1984]

mp3rican007 thank you for someone has finally seen the light. I have been sayin it for a while that 200 hp was possible without a turbo. I too have also decided that i am going to go the NA route.

 

[mp3moose]

Nice to see so many N/A people coming along. Keep it up guys!
Cheers,
Moose

 

[chdesign]

hey i never said 200 whp couldn't be found in the Protege F series motor I'm just goin the turbo route now and abandoning NA glas to see you like the pistons moose let me know if there is anything else i can help you out with.