What all do I need for 500rwhp?

[DriftFasterThanGrip]

I know I need fuel boost and tuning. Thats a given but I am only wanting to buy necessities. I don't yet have the car I'm selling off one of my cars to buy an S-14 and Red top or black top SR. I was looking into the precision's line of turbos but I am still unsure which turbo I want to go with and which manifold I want. This is the mod/shopping list I came up with so far. A little insight would be appreciated. Should I go with a Walbro 342 instead of the 255 since I am wanting to put down over 500rwhp?

SR20DETBorder Fuel Rail w/ 850cc Injectors / Walbro 255GReddy V-Spec Front Mount IntercoolerGReddy Aluminum Pulley KitHKS SS BOV300ZX MAFAEM EMSHKS turbo backHKS 272 Step 2 CamsKoyo RadiatorMSD DIS 4

[InsanityInc]

I'm not sure if 500whp out of a SR has been done. At least not on pump gas, or with any real attempt at daily drivability. You'd probably need an absolutely massive turbo.

[DriftFasterThanGrip]

I am unsure about which turbo I want because I'd like a fast spooling turbo and a good power band. The GT2835R sounds just like what I'm looking for but its so damn expensive and I hear they need to be replaced after a year.

Oh I didn't see the reply above. Would I better off going with an KA-T or taking my friend's old motor out of his GT-R he's selling? But then with the RB swap, the car would but a on the hefty side and inept on the backroads.
Modified by DriftFasterThanGrip at 9:18 AM 9/21/2004

[Nismo_Freak]

I know I need fuel boost and tuning. Thats a given but I am only wanting to buy necessities. I don't yet have the car I'm selling off one of my cars to buy an S-14 and Red top or black top SR. I was looking into the precision's line of turbos but I am still unsure which turbo I want to go with and which manifold I want. This is the mod/shopping list I came up with so far. A little insight would be appreciated. Should I go with a Walbro 342 instead of the 255 since I am wanting to put down over 500rwhp?

SR20DETBorder Fuel Rail w/ 850cc Injectors / Walbro 255GReddy V-Spec Front Mount IntercoolerGReddy Aluminum Pulley KitHKS SS BOV300ZX MAFAEM EMSHKS turbo backHKS 272 Step 2 CamsKoyo RadiatorMSD DIS 4

You're missing about another $10,000 worth of stuff off of that list.

GT2835R won't cut 500whp, try a GT3037.

272's aren't ideal for that setup, you will make a better band using 264's. 272's are designed for high rpm engines.

Drop the Z MAFDrop the EMSGet a Motec M400

Get a Z32 Fuel Pump, alot better than the 255 walbro

Get a HKS racing BOV or some equivalent (SSQV won't hold the necessary boost pressures required for 500whp)

[DriftFasterThanGrip]

You're missing about another $10,000 worth of stuff off of that list.

GT2835R won't cut 500whp, try a GT3037.

272's aren't ideal for that setup, you will make a better band using 264's. 272's are designed for high rpm engines.

Drop the Z MAFDrop the EMSGet a Motec M400

Get a Z32 Fuel Pump, alot better than the 255 walbro

Get a HKS racing BOV or some equivalent (SSQV won't hold the necessary boost pressures required for 500whp)

So I'm looking at the GT3037 and what other parts? I just talked to my friend earlier tonight who offered me his old engine out of his GT-R. I was thinking about going that route too. Not sure though.

Also, why do you suggest the Motec M400 over the AEM EMS? I'm learning to tune on that ECU, could you list some technical differences, pros/cons please?

[93sleeper]

Considering money and power goals, wouldn't it make more sense to swap in an RB25DET or RB26DETT? I'd think reliability would be a lot better. 500 whp from only 2 liters is pushing it....

[Indy]

The first thing this project needs is a dose of reality... 500rwhp out of 2 litres (or even 2.5) with no lag and a good powerband ain't gonna happen.

Sure, Indycars do it, but I don't think your allowance is the same as their budgets, and I think you probably want an engine that lasts longer than 500 miles...

If you're bound and determined to spend the money to get max HP, take it to a shop that knows about making power on a 240. Then get your checkbook out, because if you can do this right for less than $10,000 I'd be suprised.

Have fun. As always, we want pics!

[nismofly]

Oh I didn't see the reply above. Would I better off going with an KA-T or taking my friend's old motor out of his GT-R he's selling? But then with the RB swap, the car would but a on the hefty side and inept on the backroads.

if its an rb26dett 500 hp isnt hard and wont add much weight but its quite the undertaking as a project. im not sure how much the weight difference is but i dont think its enough to seriously dampen performance that much

on the other hand a 500rwhp sr or ka is just as much an undertaking because u need a built bottom end and much more work and then it wont be that streetable. the hks drift car is the most powerful and best all around sr i can think of. even that makes 475rwhp so if u want 500hp and drivability forget it without rb swap if u ask me.

[scotty-2-forty]

If you're going KA, you can use my parts list as an opinion (see link below, go to page 2). But if you have a choice (and the $$$), go RB ... smooooth. Other than that, how 'bout a butt load of NOS????

[skylndrftr]

SR20DETBorder Fuel Rail w/ 850cc Injectors / Walbro 255GReddy V-Spec Front Mount IntercoolerGReddy Aluminum Pulley KitHKS SS BOV300ZX MAFAEM EMSHKS turbo backHKS 272 Step 2 CamsKoyo RadiatorMSD DIS 4

Your building a engine the wrong way. You want to make 500 WHP? Start inside the engine so you can support it I mean have a shop go over the crank, probably check out bore/hone the block. New rods pistons etc. Now your engine won't blow up when it gets there time to make 500hp you can try and find liveable cams that will flow 500hp worth of air. all of a sudden your valve springs don't work anymore cuz of the lift duration. port the head throw an intake manifold at it (which has rather poor emissions at idle because of the volume, design required for 500hp worth of airflow, there goes streetability) and you can look at turbos finding a turbo that meets your requirements will be interesting to say the least, so you probably wanna dig up the math (I know scc did an article on it) and determine your requirments and then search for a matching turbo. Hope you saved the money for a good quality (if not fully custom) exhaust manifold. Then you just have injectors and an ECU to get it running

so install it....wait....BAM! there goes your driveshaft transmission clutch and probably some rearend/rear suspension components sorry man

[scotty-2-forty]

... so install it....wait....BAM! there goes your driveshaft transmission clutch and probably some rearend/rear suspension components sorry man

No problems with the driveshaft, transmission or rear end so long as the car is not launched hard from a dead stop on drag radials or slicks. Now, the clutch is a different story ... that's a must for upgrade!

[R-Factor]

Lots of $$$

[SHIEF]

If you want to drive this thing, you need to get a RB25 to start. Then have about $10,000 to throw at your car, at least.

[gabossie]

Just curious, what was your budget on the KA for your car? (if you don't mind me asking) I use your car as a reference for my goals on a regular basis, although I don't plan to take it quite that far (cryo treating and all), it would be nice to know what you spent. Have you been to a dyno to see what you're putting down?

[msaskin]

Between buying the car, building the engine (a necessity), suspension pieces, standalone, etc., you're looking at a $25K project AT LEAST.

I've spent about $15K on my car and still have an internally stock engine.

Nismo_freak: why do you say the M400 over the AEM? They both have the same features, and when fully instrumented with all necessary sensors the AEM costs approx. 30% of the motec, not to mention is more accesible for other tuners if you can't do your own tuning. There are only a handful of certified MoTeC tuners in the country, there are TONS of AEM certified tuners.

~matt

[tonynalli]

you gotta love those people that talk about all the things that they are going to get for a car that they dont have yet. heres a good idea, get the car first and then get the funds that are needed and then talk about getting things.

[98s14inaz]

I know I need fuel boost and tuning. Thats a given but I am only wanting to buy necessities. I don't yet have the car I'm selling off one of my cars to buy an S-14 and Red top or black top SR. I was looking into the precision's line of turbos but I am still unsure which turbo I want to go with and which manifold I want. This is the mod/shopping list I came up with so far. A little insight would be appreciated. Should I go with a Walbro 342 instead of the 255 since I am wanting to put down over 500rwhp?

SR20DETBorder Fuel Rail w/ 850cc Injectors / Walbro 255GReddy V-Spec Front Mount IntercoolerGReddy Aluminum Pulley KitHKS SS BOV300ZX MAFAEM EMSHKS turbo backHKS 272 Step 2 CamsKoyo RadiatorMSD DIS 4

I think you need to be more specific on your goals. If this is your daily driver I think 500whp is not very realistic. Me personally I wouldn't even try that with out refurbishing the sr first and putting in new pumps, gaskets, seals, and rings. Plus you need to beef up the suspension, wheels, tires, and LSD.

You would be better off doing a slow build up and upgrade in stages. From my experince even 300whp seldom feels slow on a 2500Lb car. Good luck with whatever you decide.

[mackdaddy240]

300whp would be a lot more attainable and you'll have trouble getting traction with that much power without beefing up the suspension which will set you back a few more thou$$$$$ I think you'll be looking at close to 300whp with the mods listed and thats with a nice amount of boost. Any more power then that in a car that weighs less then 2700lb and you'll have trouble keeping it on the streets if rain, and definately snow

[ian7321]

BUY THE NEW SUPERSTREET THEY HAVE A WHOLE ARTICLE ON THE SR20DET AND THE KA24

THEY HAVE COMPLETE SETUPS MINUS SOME LITTLE THINGS BUT IT WOULD BE A GOOD INVESTMENT