Some day in the future i would like to have FI on my Prelude. Right now i am leaning towards a supercharger, but who knows that might change.

I was just wondering if there is any common aftermarket mods that just wont work w/ such applications and are only used for N/A. I ask this so i dont waste my money on parts that i will eventially have to remove. What is a must have? and what is a waste of an upgrade?

Right now all i have is a CAI so its basically stock.

Thanks in an advance.

 

header

 

well if you get a turbo then the CAI was a waste of money

 

The problem here is that the 3 most popular n/a mods can be a hinderance when trying to go turbo.

A CAI can be used with a f/i system but you won't get the full potential of your setup cause the CAI is really too large in diameter for the average turbo system.

Headers are just simply out of the question. You need a manifold designed to hold your turbo and obviously the header just isn't capable of doing that.

Exhaust...Well, it all depends. You can use most aftermarket exhausts with a turbo setup since they are around 2.25-2.5 inches in diameter. For the more power hungry, you would need a 3". But using a 3" on a n/a car is not advisable.

This is all just my .02 cents and others may have a different opinion. But for the most part, this is how it goes with compatibility.


Modified by symba at 4:12 PM 7/23/2003

 

I knew the CAI was a waste for the turbo but i wasnt 100% sure about superchargers... damnit looks like i have already begun wasting money.

What about head work, is there any requirements needed or reccomended? Like do i have to mess w/ the commpression and all that?

I was kinda wanting to get Type-S piston and rings here pretty soon cuz im not sure its really worth the money to get the block resleeved. Unless if FI calls for it then i will consider otherwise? what do u all think?

Thanks alot for the help.

 

For supercharging, you can use the intake header and exhaust...only for turbo do these things become a waste of money...I edited my previous post to specify turbos......sorry about that...

Headwork is not needed unless you intend to get crazy with the power which you don't sound like you are....Lowering the compression is a good safety feature for turbo or supercharger but not 100% necessary with the proper fuel management and tuning. Raising the compression, like with Type S pistons, can be dangerous without proper fuel and tuning. First and foremost is to get a power goal...Even before you decide turbo or supercharge, get a real-world power goal. Then once you've figured it out, you can narrow down your options..You must have a well thought out plan before diving into modding your car for f/i. Trust me, without a plan you end up having overkill and wasting tons of money that could be used for important things like tuning

 

So basically ur saying a supercharger can work w/ just about anything?

I understand lowering compression is better for FI, but isnt raising ur compression better for NOS. I highly doubt i will ever mess w/ NOS but im just curious what would u do then if u wanted both? Raise or lower?

Also i thought basically all aftermarket pistons and rings raise compression, is that correct?

Thanks

 

Higher compression will yield bigger hp numbers with any setup. Your problem is combating detonation. Basically, for turbo setups 9.0:1 is the norm for built bottom end setups. I myself will be running 10.0:1. Stock turbo Hondas will be more like 9.5 to 10.0:1 anyway.
What kind of power goals are looking for?
No, aftermarket pistons can raise or lower compression ratio. You can get 8.0:1 for turbo slug or you can go 12.0:1 for a N/A screamer. It just depends on what you're trying to do..It's hard to direct you in the right direction.

 

I dont really have a specific power goal plans I just know i dont want to stay N/A forever. I would definatly love to get a supercharger and a bad *** suspension set up.

Right now my compression is at 10:1 correct. If i were to lower that right now in preperation for FI, will i lose some power until the supercharger comes in??? I ask b/c u said u get more power from higher compression. And if i lower it technically will my horsepower number drop as well. Sorry i have a very limited amount of knowledge on this FI and Compression ratio stuff.

Roughly how much $$$ would be required to get the compression to where it needs to be for a supercharger. And what parts would all that include.

I know i am noob but gota learn somewhere, thanks.

 

If you don't know what you want to do to the motor go ahead and get your suspension set up the way that you want. Once you have that done, pick a power goal that you want and figure out the best way to reach it. Once you have all of that done, then go buy parts for your motor. You can run a JRSC on a stock motor so there is no reason to drop 9:1 cr pistons in your block at this point.

 

so there is no head work needed at all?? I mean one could get by w/ skipping that. Like u could technically run I/H/E and a JRSC and ur car would be fine?? What about if u were to throw a bottle in there just out of curiousity? What needs to be done?

Actually that was my goal to do the suspension stuff first but im just trying to gather up knowledge now and im workin on planning out everything i want to get so i know how much money i need to come up w/.

 

Headwork just helps you get more air into the motor. Of course it would be beneficial but you aren't going to hurt your motor by not doing headwork.

As far as nitrous goes, you can spray a 50 shot on a stock H22 with just colder plugs. You can get up to about a 65 shot and still have some resemblance of traction in first and 2nd gear. Go much higher and getting the car to hook on street tires(ie. no drag radials nor slicks) gets a bit crazy. If you want to get crazy with it and shoot a 150 shot, then we're talking motor build, direct port, and a nitrous controller. I like nitrous or cheating or whatever the hell people want to call it. I don'ot like driving turbo'd cars on the street although they definately are the way to go if you want to go damn fast in the 1320.
I figure that I can get my prelude into the 12s on street tires with just spray and some motor work. Hell I'm already at 13.6 with a little 65 shot. Like I said, pick want YOU want to do. I know that turbo is the more viable option but I'm stubborn and want to run nitrous, so that's what I'm doing. It wouldn't be as fun if I was doing what everyone else says I should.