Is This Possible???

[Phat_Si]

I want to have my crx to have 200 Hp,(Preferably at the wheels), but I don't want Turbo/SC/or Nitrous. What ways can I go about doing this??? I would be starting out with the zc motor, which is rated at 120-135 Hp. I heard about shaving the bottom of the head to increase compression,(don't know what it's called), or Port and Polish, or Boring it out. What does all this mean, and what do I need to do to have 200 Hp without Forced Induction??? Thx ahead!!!

- Phat_Si

[VTEC_boi]

Originally posted by Phat_Si
I want to have my crx to have 200 Hp,(Preferably at the wheels), but I don't want Turbo/SC/or Nitrous. What ways can I go about doing this??? I would be starting out with the zc motor, which is rated at 120-135 Hp. I heard about shaving the bottom of the head to increase compression,(don't know what it's called), or Port and Polish, or Boring it out. What does all this mean, and what do I need to do to have 200 Hp without Forced Induction??? Thx ahead!!!

- Phat_Si

It's called milling and it's not a good idea. It weakens the integrity of the cylinder head.

You can raise the compression using higher compression pistons.

It will be very difficult and expensive to get 200wheel horses outta a ZC.

[5_LiTeR_EaTeR]

If you haven't made the swap yet then if you are shooting for 200 HP try going for a b16a. it may be more costly but very rewarding. you get 160 Hp out of the box. Basic bolt on CAI, Headers, Exhuast and you should be around 185. You don't want to really mill the head just like Vtec_boi said. You up the compression but weaken the head. Try going for some cams with adjustable gears and put it to the test. Adjust the gears to where you feel you are getting the most power or even better yet if you have acess to a dyno. But you can build the ZC to 200 HP its just going to take more work.

[5_LiTeR_EaTeR]

Ohh yeah... Also if you are going to get the ZC get a better ECU for it. The stock ECU serverly limits the power to the motor.

[Someguy]

You're not going to get 25 hp from I/H/E. DC Motorsport had a series of dynos on their website at one point. They only claimed 10 hp at the fly wheel from their I/H(4-1)/E combo. There's probably something better out there, but a 25 hp would put the SI in S2000 specific output territory, which I'm sure you have a pretty good idea of what kind of hardware Honda had to use to achieve; IE, quite a bit more then just some bolt ons.

Anyway, if you use the 15% loss rule of thumb then 200 fwhp would be about 230 hp at the flywheel. So that would be pretty close to doubling the output of ZC motor or get about 1.5 times the power out of the b16a (145ish hp/ liter). Not impossible, but pretty impractical.

200 flywheel hp NA is a bit more obtainable from the b16a, but you are till talking about 125 hp/L, which is still well beyond what you are going to able to get with bolt-ons.

[Moppie]

Oh how I would love an extra 25hp with just bolt ons!
Honda did make a B16 engine with 185 hp, the B16b in the CTR, but its not your normal run of the mill B16a and uses some much wilder cams and head porting. (as well as a B18c block)


There is a member here (I havent seen him in a while though) called Norex who got close to 200whp with a B16a.
He used a stock head with some headers. And then went for some wild cams and retuned ECU with the limiter moved up to 9,000rpm.
The stock bottom end is very strong, and will rev to 10,000 for short periods with out self destructing, and 9,000rpm is quite safe for track and street use. (although it will of course shorten the life of the motor, and isnt recomened on a high millage engine)
So all you need is the right cams and matched head porting with a good set of headers, then enough time on a Dyno with an aftermarket ECU, (or piggy back ECU) to set it all up right and 230flywheel hp is achievable.
But it will be at a sacrifice to engine life, and of course to street drivablity. And things like the strength of the clutch and g/box will also become a concern.

230hp from a ZC is also possible, but your talking about spending an awful lot more money on some very rare and exotic aftermarket parts, or getting custom parts made. (It has been done, and I belive mugen or Jun or a similar Japanese tuning company was selling ZC engine packages with close to 200hp before the B16a come along.)