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whats needed for 250+ whp

 
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Old 11-23-2010, 01:36 PM
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whats needed for 250+ whp

whats needed for 250+ whp in n/a
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Old 11-23-2010, 03:23 PM
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Re: whats needed for 250+ whp

Alot. But honestly. Why are u set on that number? Horspower is alot but isnt everything. Especially if your wanting to do the quarter mile.
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Old 11-23-2010, 04:14 PM
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Re: whats needed for 250+ whp

The only number that matter are getting from speed a to speed b and point a to point b. i.e. 0-60 and 1/4 mile.

Having said that, blueprint your block, balance/polish your crank, forged pistons and connecting rods with at least 11.5:1 CR, Port and Polish, upgraded valve train.
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Old 11-23-2010, 05:07 PM
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Re: whats needed for 250+ whp

more than you wanna spend if you're asking.
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Old 11-23-2010, 05:29 PM
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Re: whats needed for 250+ whp

a 150shot should do it................





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Old 11-23-2010, 06:55 PM
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Re: whats needed for 250+ whp

a turbo. duh lol
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Old 11-23-2010, 07:35 PM
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Re: whats needed for 250+ whp

You can do it for a few grand if you already have a good starting point and know exactly what you are doing.

What motor are we starting with?

Is Nitrous an option?

How much are you willing to spend?

Are you wanting this to be a daily driver (this is a $$$ decider...)?

How much experience do you have with building motors? (you cant bolt on this kind of power without it being a power adder.)
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Old 11-23-2010, 08:52 PM
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Re: whats needed for 250+ whp

there aren't many people that are crazy like I am. Getting that kind of power N/A cost quite a bit of money, especially if you want it to be reliable and don't want to give up the "luxury" features of you car lol.

mckillo gave you some good advice. Start pricing out those parts and services and see if this is really the direction you want to go.
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Old 11-23-2010, 09:22 PM
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Re: whats needed for 250+ whp

Yeah you're pretty much gonna have to fully build it. Definitely gotta let us know what engine you're going with though.

H22's start with about 155hp at the wheels.
A performance intake manifold with larger fuel injectors, better air intake, a good header and a good flowing exhaust (All in combination) will help out quite a bit. Of course, with larger injectors you're going to need a tune, and to get a tune you're going to need a new ECU.

From there, you might be at 180whp but you're not gonna get the full effect of your bolt-ons w/o some internal work. Some upgraded cams (stage 2/stage 3 depending on how serious you are about driving the car on the road), springs, retainers, and valves will optimize airflow through your engine and maximize your gains with the bolt-on components. With a full valvetrain, that will put you somewhere in the neighborhood of 220-230whp, including your bolt-ons and tune (Keep in mind, the last thing you will wanna do is the tune so that the ECU can account for everything you're doing).

I've heard mixed things about having a port and polish done on the head- some people say the H22 heads already have great flow, others say the machine shop doing it REALLY needs to know WTF they're doing to get it right, and still others say P&P work will always increase performance no matter what. I've yet to find the right idea there.

Lastly, a performance bottom end will help the most, but will most likely be the most costly. Pistons would help immensely, but you're gonna need to get your block sleeved if you have an H22 (same if you go turbo). You'll need to upgrade your drivetrain with a performance clutch and flywheel to match, and you'll want to get an LSD to make the most outta getting that power through the wheels equally.

So yeah..that would be a start.
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Old 11-23-2010, 09:59 PM
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Re: whats needed for 250+ whp

$$$$$ and then some more $$$$$ and then some blood,sweat,tears and then some more $$$. Nuff said
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Old 11-23-2010, 10:43 PM
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Re: whats needed for 250+ whp

Torque > Horsepower. Get a quick spooling turbo; namely, a Garret GT28RS "Disco Potato". Full boost at 3K RPMs...
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Old 11-23-2010, 11:05 PM
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Re: whats needed for 250+ whp

It doesn't matter if u have 250hp or a 1,000hp if u dnt have the right transmission and gears its not going to do you very good to have it. Torque is the main thing to worry about if you wanna be fast. But if you just want crazy amount of power and it be N/A then you will need $$$. Turbo would be the cheapest route to go if you just want the hp.
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Old 11-23-2010, 11:24 PM
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Re: whats needed for 250+ whp

The good things about all motor though..no turbo lag, and you got baller status when people find out that, yeah, you're that fast with no F/I.
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Old 11-24-2010, 12:04 AM
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Re: whats needed for 250+ whp

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Originally Posted by ogsmakdade View Post
there aren't many people that are crazy like I am. Getting that kind of power N/A cost quite a bit of money, especially if you want it to be reliable and don't want to give up the "luxury" features of you car lol.

mckillo gave you some good advice. Start pricing out those parts and services and see if this is really the direction you want to go.
Truth from a balla. Lol

Op:
I would definately listen to any of ogs advice..

I'm sure it'll take a good bit of money to do it right but it would be worth it to me

Just do alot of research.. You'll save money and a lot of time
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Old 11-24-2010, 12:05 AM
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Re: whats needed for 250+ whp

250 whp isn't much in a Prelude =/, your gonna have that much power and CRX's with 200 or less whp will walk you.
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Old 11-24-2010, 12:22 AM
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Re: whats needed for 250+ whp

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250 whp isn't much in a Prelude =/, your gonna have that much power and CRX's with 200 or less whp will walk you.

Yeah but it really depends on his goals are for the car. Not everyone wants 500hp on their daily driver.

What if that crx has a 450hp h22 in there?!! Lol
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Old 11-24-2010, 12:34 AM
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Re: whats needed for 250+ whp

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The good things about all motor though..no turbo lag
He just needs a turbo that spools quickly...A Garret GT28RS will have full boost at only 3000 RPMS. The Prelude can easily get to 3K bone stock...You'd better believe that climbing to 3K will be EVEN easier while your turbo is building boost; not to mention all those bolt-ons and other parts you'll need for the turbo will be working in his favor too. And once he gets to 3000 RPMS, all hell breaks loose in the form of torque.
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Old 11-24-2010, 12:35 AM
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Re: whats needed for 250+ whp

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250 whp isn't much in a Prelude =/, your gonna have that much power and CRX's with 200 or less whp will walk you.
If you can build it to perform efficiently, it would be a lot of fun and would truely outperform most cars with similar HP ratings in it's weight class, and even some lighter cars. I mean, yeah of course when you put power into a lighter chassis, you're gonna end up with a vehicle that accelerates faster than a heavier one but then again, you'll have the problem with traction among other things with a lighter chassis.

Example: There's a lot of people out here that build sandrails, and put anything from VW engines to LS1's in them. When they hit the gas on the street, they either pop a nasty wheelie or just burn out and don't go anywhere.

I have a buddy with a turbo'd Integra- 278whp and I keep up with him off the line up through about 60-70mph because he burns out so much, drops outta boost, ect. The only thing it's good for is racing from a roll, which you can't really do legally. With N/A, the power is on tap and easily manipulated to keep control of your vehicle, which is why I'm a major advocate of it in the Prelude. Supercharged would be my F/I of choice, but given that you're always in boost that way burning through gas just sitting there...crap I could lodge complaints all day but everyone has their opinion, right?
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Old 11-24-2010, 12:50 AM
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Re: whats needed for 250+ whp

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I have a buddy with a turbo'd Integra- 278whp and I keep up with him off the line up through about 60-70mph because he burns out so much, drops outta boost, ect. The only thing it's good for is racing from a roll, which you can't really do legally.
Stop light racing isn't exactly "legal" either, lol.

...Or did you mean at the drag strip? Haha. Anyway, tell your buddy to get a Limited-Slip Differential. That'd help with the slippage for sure...
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Old 11-24-2010, 12:58 AM
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Re: whats needed for 250+ whp

Yeah the drag strip! And maybe once or twice on the way there. And maybe again on the way back, and only up to the speed limit! Yeah. But mainly at the drag strip. :D
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Old 11-24-2010, 02:34 AM
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Re: whats needed for 250+ whp

................

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Old 11-24-2010, 04:13 AM
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Re: whats needed for 250+ whp

Quite simply put ur gonna need money. I'm buildin an N/A H22 myself. I'm lookin to spend between 6-10k total for my build. Word to the wise tho. It doesn't matter how much power u have if u can't put it to the wheels. Traction is key. U could have 1300hp but if all u do is spin ill beat u on my huffy bike lol. Application is a key too. What's ur goals for the car. There's a lot of good info here n good ppl to asl questions. Just be realistic about ur goals n dnt waste ppls time if u havennt done any research. Good luck
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Old 11-24-2010, 12:05 PM
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Re: whats needed for 250+ whp

Just get a K24 block and K20 head, works great with bolt ons from what I hear. You might and I stress, might, end out ahead over the H22.
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Old 01-20-2011, 04:43 PM
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Re: whats needed for 250+ whp

na build is always more spendy
Turbo is the obvious more power gain immeadiately i would recommend to fully build the head with cams dual valve springs get ecu plus chipped and tuned right away or you will blow it up as my friend did he pushed 260 without tune or the head built up just head t3/t4 turbo kit p28 chipped on chrome blew it up in a day
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Old 01-29-2011, 02:59 AM
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Re: whats needed for 250+ whp



99-04 LS1 makes approximately 275-290 WHP ( it can be argued more, just making a point.) That's 25hp more from where you want to be, running 4 more cylinders. There is no sensible way to make that "NA" power in a 5th Gen prelude. Turbo is the route you want.

Without swapping a motor, you'd need to raise the Compression, remap the fuel/ ignition/ air rationing, use 108+ race gas and LOTS of internal work. Unlike The B-series engines, the H22 are Tweaked to the DD Limit from the Factory. 165 whp is respectable. The Honda odyssey sold like hotcakes with the f22/f23 engines and they only do 100whp. A b18 gets 20hp from a tune.

I won't tell you to spend wisely, It's your car. Understand that if you're building this car in mind to make someone else happy, you can add 500hp, and it'll still be junk. If you are doing this so you can claim you built a block from the ground up, It's gonna take you about a year to get it right, just tinkering on sunny weekends.

If you are interested, you can get a h22, buy the type s internals new, 12.0.1 pistons, Some jun cams and gears, Headers, intake, exhaust, apexi commander ecu, fuel pressure regulator, injectors, complete ignition upgrade and some port and polishing... beef up your tranny with heavy plate and clutch combo... (running quick figures)... About 4900.00 if you do it all yourself. Not bad for approx 260 whp with the right elevation, outside temperature, car all warmed up yadda yadda yadda. I am being gracious with the numbers because doing the math while perusing through "Sport compact car" never equate to true street values.

I don't know anything about turbos, so I have no input. You be better off just doing the bolt ons, quick tune, Mild suspension upgrade, steel brake lines and then enjoying your car for what it is.
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SURGEON GENERAL WARNING:
THE IMITATION OF ANY OR ALL MANEUVERS EXECUTED BY A BA B20A 4WS PRELUDE IS HAZARDOUS TO YOUR CAR'S HEALTH. DRIVING A PRELUDE MAY CAUSE LOSS OF INTEREST IN OTHER CARS, WOMEN AND SPEED LIMITS. OTHER SYMPTOMS INCLUDE SLEEPLESS NIGHTS, COLD SWEATS AND OTHER SYMPTOMS RELATED TO ADDICTION. IF THE SYMPTOMS PERSIST,DRIVE!
Prelude: Because all great stories have one. Just like Honda.

Last edited by Sideswipe SI; 01-29-2011 at 03:04 AM.
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Old 01-29-2011, 06:07 PM
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Re: whats needed for 250+ whp

I wasn't advising anything. I put together a list of parts to reach the 250 whp you wanted as an example. Use whichever parts you want to attain that goal. Prelude type-s block make 220 hp from Honda. You will need an upgraded ignition coil / wires and distributor for better spark, more fuel delivered to the cylinders, enough compression to make hp, cause the h22 is high enough already, some cams (can be crower or comp) a piggy back or relfash. How are bolt- ons I/H/E wacky? You gotta search for yourself to figure out what you want to slap on your block, not ask if you already know, Not ask in one line " what's needed for 250+ whp in N/A".

Good luck with your build.
__________________
Quote:
SURGEON GENERAL WARNING:
THE IMITATION OF ANY OR ALL MANEUVERS EXECUTED BY A BA B20A 4WS PRELUDE IS HAZARDOUS TO YOUR CAR'S HEALTH. DRIVING A PRELUDE MAY CAUSE LOSS OF INTEREST IN OTHER CARS, WOMEN AND SPEED LIMITS. OTHER SYMPTOMS INCLUDE SLEEPLESS NIGHTS, COLD SWEATS AND OTHER SYMPTOMS RELATED TO ADDICTION. IF THE SYMPTOMS PERSIST,DRIVE!
Prelude: Because all great stories have one. Just like Honda.

Last edited by Sideswipe SI; 01-29-2011 at 06:10 PM.
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