another displacement question

[pushnlacs]

hey whats up?? im going to start asking questions in here only since over in the tech section all i get a bunch of people whinning and bitching cause im not about their beloved ka24.

i was just reading an old article from super street and it was on the blitz s15 and it said they uped the displacment a little just buy adding oversized pistons. for my goal 400hp(crank) i really dont need to up the displacment much if at all, but if i had the money a tenth of a liter wouldnt hurt as well as having the stronger pistons as a bonus. there car was set up pretty much as id want mine and with it at 2.1l it dynoed at 425hp so i was just looking for a little info(anything youd like to share or think i should know) on uping the displacement with pistons??? thanks i appreciate it

[Doomed2Walk]

Don't really need to do internal work (other than replacing old gaskets, o-rings etc after buying the sr) on the SR to achieve 400 crank hp. Besides, WHP is what counts. Just make sure you upgrade the top end like injectors, fpr, fuel rail, get a z32 maf and fuel controller like a safc, bigger turbo, and you should be good. cams, cam gears, valve spring couldn't hurt either, but if you want to do this, don't pay extra for the S14 SR, and you won't be using the VTC anymore.

[pushnlacs]

i knew 400hp crank is possible without messing with internals but i was just wondering how will response be??? will low end be power be ****ty with a 400hp 2.0l??? also i was talking with the guys at phase2 and they said for 400hp u wouldnt use real big cams so youd keep the vtc and it will help low end.

[Doomed2Walk]

Response should be so-so. With a 2.2 you will definately get better low end but don't expect to get wowed until the turbo spools. Lighter flywheel will help too.

[pushnlacs]

see thats the only thing that worries me. i dont want a modded car thats should be mean as hell but feels like a weak regular 4 banger when i hit the gas. thats the one thing that worries me with small 2.0l cars. i wanna hit the gas and go and dont wanna have to floor it all the time just to get some power. but if im going to mod up a car i dont wanna end up just running 13's. if i put monet into mods i wanna fast *** car thats in the 11's. so i was thinkg a stripped 240 with a 400hp sr would do it but like i said im not sure how itll feel and i dont have the money to go with one of the bigger displacement imports.

[bigk]

well to tell you th

see thats the only thing that worries me. i dont want a modded car thats should be mean as hell but feels like a weak regular 4 banger when i hit the gas. thats the one thing that worries me with small 2.0l cars. i wanna hit the gas and go and dont wanna have to floor it all the time just to get some power. but if im going to mod up a car i dont wanna end up just running 13's. if i put monet into mods i wanna fast *** car thats in the 11's. so i was thinkg a stripped 240 with a 400hp sr would do it but like i said im not sure how itll feel and i dont have the money to go with one of the bigger displacement imports.

Well to tell you the true,your wanting a kat then.i had a sr in 1990 fastback and sold it for the same reason.i want more lowend torque and a kat or rb is where is at. plus i think that stroking a sr is a waste of money cuz your going to pay 5k plus just to stroke when you can just build a kat for way less and have a 2.4 liter engine.

[Doomed2Walk]

Yep, it's true, although you don't like the KA, it's the engine with more torque. All 4 bangers are going to feel slow until you get past a couple thousand RPM. I think the 4 banger with the quickest off the line has to be a STi, with a 2.5L engine, it doesn't feel sluggish under 3K RPM unlike the WRX. When you floor an Evo it's like woah, but when you floor a STi it feels like you got punched in the stomach. And for the price of the car/swap/stroker kit/upgrading everything you want to do with the S14, should just get a STi because frankly some of the things you are asking for are just not cost effective, reliable for daily driving, or easily done, if possible at all. 2.0L is still 2.0L, who care's if you lag behind in 1st or 2nd gear, there's 3 more to pull you ahead of the other guy.

[nismostate]

STi's are nice until you start to break things. From what I see, you want to have something in the 11's? sti isn't the route to go. buddy of mine had a regular wrx, w/ sti transmission, upgraded turbo, fmic etc. he's gone through 3 rear ends and then started to have ring problems AGAIN. he finally stripped everything back to stock and sold it.

edit: if you want something in the 13's, a stock redtop SR will do the job w/ 3" turbo back and smic.

[Doomed2Walk]

Well my friend's Evo has gone thru 3 sets of 6 puck unsprung clutches, now he's stepping it up to a full carbon clutch D: Yeah, STi drivetrains aren't the strongest from what I've heard, but 400+ WHP launches on an AWD can do some bad things to your drivetrain.

[pushnlacs]

you know what im just ganna go with the sr20 for sure. i just think hearing people always complain about low end got to me i think its just made into a bigger deal than it is(unless you going for 600hp+, then yea low end will suck).

low end on a non turbo 2.0l engine doesnt even feel bad to me its feels fine so the sr will be all good.

[Doomed2Walk]

So you finally made up your mind. Heh, trust me the SRs don't lag that badly, it likes to rev so you get into boost quite quickly, at least with the stock T28.

[pushnlacs]

yea the sr it is, i dont know why i just never thought about the fact that a weak non turbo 2.ol dont even feel that bad to me.

plus, this is kinda a stupid question , but the mods u do to the car. dont they up the the power of the engine itself like they would a non turbo car??? so low end would be like a modded non turbo???(at least the mods that would up the low end?)

[mynismo]

see thats the only thing that worries me. i dont want a modded car thats should be mean as hell but feels like a weak regular 4 banger when i hit the gas. thats the one thing that worries me with small 2.0l cars. i wanna hit the gas and go and dont wanna have to floor it all the time just to get some power. but if im going to mod up a car i dont wanna end up just running 13's. if i put monet into mods i wanna fast *** car thats in the 11's. so i was thinkg a stripped 240 with a 400hp sr would do it but like i said im not sure how itll feel and i dont have the money to go with one of the bigger displacement imports.

how can a modded car be as mean as hell but still feel weak? why do you think that 2.0L isn't enough? why do you want power under 3k?

first, you have to understand that the size of the engine doesn't matter. second, don't get the sr if you don't like 4 bangers. you dont need more displacement, all you need is power.

my car is a 4 banger turbo sr, and i can tell you "weak", "2.0L" and "4banger" do not come to mind when you step on the gas.

[pushnlacs]

thats cool as hell then. i dig bad *** 4 cylinders, its just that iv driven v8's and this will be my first sport compact turboed car so i wasnt sure what to expect. but im sure a 400hp sr will be bad ***.

[180fan]

sorry to say, but response from a I4 turbo won't be close to that of a v8. It really depends on the mods you do to the I4 if you want the initial response, like buying a torquier turbo vs. buying one that's more peaky. Also with cams, don't run long duration cams if you want to retain your low end and such. I think 400 might be obtainable, but if you want to retain the initial response, you might have to be very careful about the parts you buy.

[Movingviolation240]

My .64AR GT25R made more HP and torque peak and low end than my buddies T3/T4 50 trim KAT. It's all in how you size and cam the thing.

My torque curve was flatter than a 12 year old from 2500 to 7000 at 7psi and I made 300rwhp. Crank it up from there and the numbers rise at a very nice rate.

Paul

[Movingviolation240]

Oh yea, and unlike a KAT I could drive my SR every day to work 120 miles round trip Stock internals, stock HG, stock valve springs.

(I think I just kicked open a hornets nest with this post)

[Doomed2Walk]

My torque curve was flatter than a 12 year old .

Hahaha you perv. That's going on my sig!

[nnkfws333]

Paul's crazy!

Anywho, I mean geesh just last night I pulled on 2 350Z's one from a 4th gear and 3rd gear run and i beat them with running 12-13psi on the stock turbo. I was impressed lol I thought they would have higher top end.

[Movingviolation240]

Sometimes even I amuse myself.... (not like that) heh

Sounds like something Jay would say though dosn't it ?

Paul

[Nismo_Freak]

My torque curve was flatter than a 12 year old

Hhahahahhahhaah...

[JustinStrife]

That quote rocks lol