New member Needing help with Powering my 420a but keeping it N/A

[DSM Weazel]

Hello my name is Chris and I'm from SoCal. I got a 98 eclipse rs after years of wanting a DSM.
I had a couple of questions. First off,
Will this kit suffice for a rear drum to disc brake conversion? I have already searched and know the procedure but I just want to make sure I am not missing anything apart from the rotors and calipers/pads:

http://www.ebay.com/itm/Mitsubishi-...Rear-Hub-Wheel-Bearing-Pair-Set-/110741178511

Second, these are the mods I had in mind for my car. I want to stay away from porting and motor building if possible because it is hard to find anyone in South Cali who can help me with that.

Short Shifter
Brakes
Cold air Intake
Front and Rear Sway bars
Exhaust header
Catback
Intake manifold
&Flywheel upgrade

It already has a stage 2 clutch.
My question is, will I be able to just install all of these parts and will my 420a be able to handle them or will I also need fuel management upgrades, porting/bore-ing, or dyno tuning. My goal for this car is to simply have a fast Daily driver that I can have fun with yet still take her up north to race with some of my honda buddies. My target hp is 200.

I would like to stay away from turboing and I already know the old "sell it and get a gst/x" advice many of you like to give but I would not like to do so, therefore suggestions other than that are greatly appreciated. I plan on purchasing a GSX in about 5 years but for now I want the most out of my RS.

Also, how much hp and tq gains will I be looking at? I did as much research as I can but I am using the forun from a phone therefore my resources are a bit limited.
Again thanks to anyone who can help and I am looking forward to growing as a DSMer!

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[DSM Weazel]

Edit: I meant exhaust headers and intake manifold on my list

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[DSM Weazel]

Can anyone help with this please?

 

[bryanwheat]

You will not make anywhere close to 200 horsepower without high compression pistons, head porting, cams, and very good tuning. You are looking at 10-15 horsepower max with intake and exhaust.

 

[DSM Weazel]

Thanks for the info. Is it something I can have done by any mechanic? Also, how much will it cost? And lastly, is there any members in so cal who is know to help for a good price?
What route should I take in terms of the order of doing all of these upgrades?
Looks like I might have to consider going turbo. Would I still need porting with turbo to reach 200?

Thanks and sorry for all the questions but I'm eager to learn :]

 

[Jthedoc]

This post screams fake but ill bite anyways.

First- You dont need new hubs/bearings to do a rear disc conversion. You can reuse you old ones. You need the left and right versions of each:
Backing Plate
Caliper
Caliper Bracket
Caliper Hose
Pads
Rotors
E-Brake Cables
Also, You will want
4 Caliper Bracket Bolts
2 Caliper Guide Pins
2 Caliper Lock Pins

If you get these at a junkyard its not too hard to figure out how it goes together.

As for your Performance Upgrades, you're probably not getting more than 15 horses out of all that. The 420a is made to be more powerful than a civic and thats it. Enjoy the great gas mileage, and if you want you can make it louder with headers and a fart can, thats your option. But 200HP is a pretty high expectation without Forced Induction.

 

[RoryBarron]

Thanks for the info. Is it something I can have done by any mechanic? Also, how much will it cost? And lastly, is there any members in so cal who is know to help for a good price?
What route should I take in terms of the order of doing all of these upgrades?
Looks like I might have to consider going turbo. Would I still need porting with turbo to reach 200?

Thanks and sorry for all the questions but I'm eager to learn :]

Porting is never necessary, if you want a quick car a non-turbo 2g probably isn't the way to go. 200hp non-turbo hasn't happened yet for an eclipse. I think the fastest NT was only like 165hp and 14sec 1/4. Here is a thread to read for ya! 420a

 

[bryanwheat]

DSM Graveyard - Your #1 Source for DSM Parts!. They claim 200 out of the box with good tuning. 200 is fairly achievable with the right tuning.

 

[DSM Weazel]

This post screams fake but ill bite anyways.

First- You dont need new hubs/bearings to do a rear disc conversion. You can reuse you old ones. You need the left and right versions of each:
Backing Plate
Caliper
Caliper Bracket
Caliper Hose
Pads
Rotors
E-Brake Cables
Also, You will want
4 Caliper Bracket Bolts
2 Caliper Guide Pins
2 Caliper Lock Pins

If you get these at a junkyard its not too hard to figure out how it goes together.

As for your Performance Upgrades, you're probably not getting more than 15 horses out of all that. The 420a is made to be more powerful than a civic and thats it. Enjoy the great gas mileage, and if you want you can make it louder with headers and a fart can, thats your option. But 200HP is a pretty high expectation without Forced Induction.

How is it fake? I was serious about it. Lol.
I read somewhere that I need the whole hub assembly.
And to be honest, most of this car talk is foreign to me. This is my second car, the first being a mirage which all I did was slap an I take on it.

I am here to learn.
I thought all of the mods I listed would at least get me 30 .

But since it looks like I have to go turbo, what do I need for it? Is there some sort of all in one kit?

And will my engine be able to handle it?
I already stated my goal which is 200
So can I have clearer reccomendations to getting there please? I've trashed my list and am starting fresh .

Thanks to all who can help.

 

[RoryBarron]

DSM Graveyard - Your #1 Source for DSM Parts!. They claim 200 out of the box with good tuning. 200 is fairly achievable with the right tuning.

Considering none of those guys even own a 420a I would like to see them back that up.

 

[DSM Weazel]

Look like my best bet is the hahn stage 2 turbo. Easiest way to 200hp without engine mods.
It does 8psi (which I know is low don't bash me) and gives 250-275 crank ho which should be around 200 at the wheels correct?

 

[FearlessNick]

Well to tell you the truth. You are a smart man. Want to know why? Because you have a 98 RS just like me! And everyone is right about not getting a whole lot out of this engine. But, i have done a lot od thinking about what to do with my car. Of course what your wanting to do is a disc swap. And for engine wise, i plan on building up a head. Port and polish it. Get cams and adjustable cam gears. Better pullys and a a AFX computer. This computer is known as the best bolt on for our 420a. Little pricy. But what i want to do like i said,
Port polish head with cams and adj cam gears along with all the durable head components. ( ive seen a couplr places that sell built up 420a heads)
Get that AFX computer.
And throw a little turbo kit on it.
But your just better on getting a 4g63t. But i understand where your coming from. These little 420a rs and gs's make you fall in love. But once i get money together im doung those upgrades. Of course i would have to get intak and exhaust mani. But to check out that computer. Go to my posts and look up a thread called chips. Got anyquestions about these 420a's. Fell free to ask me as i know a lot about them and i havr rebuilt my own and a friends.

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[DSM Weazel]

Well to tell you the truth. You are a smart man. Want to know why? Because you have a 98 RS just like me! And everyone is right about not getting a whole lot out of this engine. But, i have done a lot od thinking about what to do with my car. Of course what your wanting to do is a disc swap. And for engine wise, i plan on building up a head. Port and polish it. Get cams and adjustable cam gears. Better pullys and a a AFX computer. This computer is known as the best bolt on for our 420a. Little pricy. But what i want to do like i said,
Port polish head with cams and adj cam gears along with all the durable head components. ( ive seen a couplr places that sell built up 420a heads)
Get that AFX computer.
And throw a little turbo kit on it.
But your just better on getting a 4g63t. But i understand where your coming from. These little 420a rs and gs's make you fall in love. But once i get money together im doung those upgrades. Of course i would have to get intak and exhaust mani. But to check out that computer. Go to my posts and look up a thread called chips. Got anyquestions about these 420a's. Fell free to ask me as i know a lot about them and i havr rebuilt my own and a friends.

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Thanks Nick! Yea I am just going with the hahn stage 2 and probably the catback intake and manis as well. How much is the chip you mentioned? And is it absolutely necessary? I just want to plan out my finances . Thanks for all the help from everyone!

 

[Jthedoc]

For the Brakes:
This site is a good reference:
98 Eclipse RS / Rear Brake Drum to Disc Conversion
but instead of cutting up the backing plate, just swap out the ebrake cables. I've done the swap and could help you through pm if you have questions.

As for performance:

Your engine wont handle over a certain amount of boost, and the boost will shorten its life. If your car hasn't had the head gasket changed yet, you will likely have to change it at some point in time because as far as I can see most 420a's have the HG defect.

Your Budget is a key factor. You can throw together your own turbo kit for 1-1.5k if you know what youre doing. I recommend reading http://www.dsmtuners.com/forums/articles-turbo-system-intercooler/181134-how-build-420a-stage-2-turbo-kit-under-1000-a.html to get a good idea of what you need to turbo a vehicle. If you dont fully understand everything, you will want to go with a preassembled kit that has instructions. Hahn makes a few that are quite popular.

If you dont care about having 200HP all of the time, you can get nitrous. Like boost, this can also shorten the life of your engine but you get power when you need it and good gas mileage when you dont.

Then theres an all motor build. To do this, you will need high compression pistons, and likely full floating rods. You can have any automotive machine shop put that engine together, and you or a mechanic can drop it into the car.

I almost forgot to mention that you can swap in an SRT4/Cloud Car Block. Ive seen both, but they take a bit more technical and fabrication skills. 2gnt is a good source for info about the cloud car swap.

Edit: Didnt see the other posts because I started the reply and walked away... Good luck on your turbo build.

 

[bryanwheat]

For what you are going to pay for the hahn kit with other supporting mods you could easily pick up a gst or gsx that needs a little tlc. You could sell your car for 2k, and put the 2500 that you were going to spend on top and buy a real nice running gst or gsx with some mods already installed.

I agree with the post above, if you want to boost the 420a you need to piece the kit together. Find a cast manifold, get an evo 16g (passenger side inlet) manifold to turbo adaptor, oil lines, ebay intercooler and piping. 1g blow off valve. For fuel managment some use the fmu, some use the portfueler, some have used an safc sucessfully. As far as just the turbo stuff you could do it for under 1k pretty easily if you play your cards right and take your time. You are going to have to fabricate some things like inter cooler piping, exhaust down pipe and intercooler mounting. You will also need a part called the missing link which goes between the map sensor and intake manifold unless you go with a standalone style ecu. You will also need a bigger fuel pump. A walbro 190lph will work just fine.

 

[FearlessNick]

Thanks Nick! Yea I am just going with the hahn stage 2 and probably the catback intake and manis as well. How much is the chip you mentioned? And is it absolutely necessary? I just want to plan out my finances . Thanks for all the help from everyone!

Im thinking its around 600. And its not a chip. It is a whole ecu. They took out a bunch of limitations that chrysler put on. And the thing that sucks is we cant use eprom because of the way our oem ecu was made. But what it does is reads the car and whay the engine is doing. And at the time you get the ecu amd after you add parts to your engine is you drive around half throttle for a few dozen miles. And this ecu found out the perfect a/f mix and gives us max hp as well as decent mpg. Go to my post and look it upb id grab a link for you. But im very limited at actions with the tapatalk app.

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[DSM Weazel]

Thanks for the last 2 posts. Unfortunately there are no and I mean NO gsxs for sale in my area of socal short of a 2 hour drive and the gsts are overpriced. About 6k. I only picked up my rs for 2k and I did tlc and fell in love with it. If I buy the hahn kit, I don't think I will need much. Also, the car just got a full head job and higher conpression pistons ( not sure what the rew ratio is). It also has a stage 2 clutch. Other than that its stock. If someone can look at the hahn website the other member posted above, and check out the stage 2, can you please tell me what else I would need? And for the member wilking to help with the brakes, I will pm you.

Thanks all!

 

[FearlessNick]

Sure bro. What ever you need just shoot a PM. If i cant answer it. I will find you a answer for sure. If you got the same car as me. I got your back. Hahaha

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[DSM Weazel]

Thanka nick. Looks like I will go with the hahn, whatever else it may need if anything, that ecu, the manifolds, intake, catback, and sway bars, do the brakes and call it good run. At least until I start wanting sonething more (which coming from a 92hp sohc mirage wont be for a year or so) . Still tho if someone could help me evaluate the hahn and see what I need to make sure my engine doesn't explode . And I will continue to look for the right direction in terms of the brake conversion.

 

[bryanwheat]

So you have even higher compression than what it had from the factory? High compression, boost and timing don't go well together on stock rods.

 

[FearlessNick]

I would love to take a look at the kit. But i just know the basics of a turbo. Tommorw i will be with a friend who has a fully buil TSi and a 92 gsx he is building up right now. And i will get back to you asap.

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[FearlessNick]

So you have even higher compression than what it had from the factory? High compression, boost and timing don't go well together on stock rods.

So im going to sound dumb maybe. But dont you need, well is prefered to run low comp. for a turbo?

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[Jthedoc]

First of all, you will run into problems if you boost that engine with higher compression pistons. High compression and boost just don't go together. If you have good enough pistons, you may want to just keep it NA and build it as all motor.

Oh, and your engine Will likely explode if you don't have forged internals, especially if you have too much fun with a boost controller. 5 pounds of boost just doesn't satisfy the craving and before you know it there's a rod laying in the street with an oil path leading right up to your car.

Nick is right- Boosted engines get lower compression pistons. Boosted engines also have knock sensors.

 

[DSM Weazel]

Man this is getting to be really tedious. How do I test compression so I can give an exact number and I can get exact help? I think I would be fine with 8psi for the one mentioning having fun with a boost controller. I don't want a super racer I just want a fairly fast car. I would probably bolt the controller under the car so I can't even get it anyways *jokes*. In all seriousness I'm not a hp junkie. I cane from a 92ho mirage. I just want something fairly fast and use it as a pretty domesticated daily driver.

 

[bryanwheat]

It is kind of hard to judge compression ratio from doing a compression test. It should read higher with a compression tester than from the factory. Did you have these pistons put in it, or is this what someone told you was done to it? Typically when you change pistons you have to pull the engine, hone the cylinders, clean the block afterwards, clean everything else and re assemble with all new parts. Pretty much a full rebuild.