2.2l stroker

[pushnlacs]

hey whats up? i was just wondering about something. i heard a stroker kit will make a turbo spool 500rpm sooner,is that about right??? because i figured a bad *** setup would be a sr22det w/ a hks gt2530. since the 2530 is good for 360whp with full boost by 3500rpm, then add the stroker and that will take you to about 400whp with full boost by 3000rpm. that would be a mean f'n street car.

[robbbby]

For the price a stroker kit costs IMO it's not worth it one bit, especially for only an extra 0.2 of displacement. Just build a sweet KA instead.

[240SXer]

hey whats up? i was just wondering about something. i heard a stroker kit will make a turbo spool 500rpm sooner,is that about right??? because i figured a bad *** setup would be a sr22det w/ a hks gt2530. since the 2530 is good for 360whp with full boost by 3500rpm, then add the stroker and that will take you to about 400whp with full boost by 3000rpm. that would be a mean f'n street car.

Yes, the stroker kit is cool. But is an extra 40whp and 500 of spool worth $5,000?

[robbbby]

I highly doubt an extra 0.2 litres of displacement will spool a turbo 500rpm sooner anyways.

[Hijacker]

.2 litres will make the volumetric effeciency of the engine better, but it wouldn't be realized in how fast the turbo spools. Headflow and CHRA design would be the big deciding factors. If displacement dictated spool time, a V8 would have instant spool.

[pushnlacs]

v8's pretty much do have instant spool. plus v8's use big *** turbos that would lag like hell on a smaller engine. displacment definatly determines spool because the engine pushes more air. thats why alot of big hp 4 bangers have been stoked and thats why the rb26 or 2jz can produce huge hp with almost instant response.

so yea 5g's for .2l is worth it considering that means u could have a 400+whp sr powered car with pretty much instant response. plus iv said it befor and im not ganna argue about it but i much rather have a built up sr than a ka powered car, no matter how powerful the ka would be. over the years i have the car id rather have a sr powered 240 that i eventually stroke out to 2.2l and even bore it to 2.4 if i have the money and feel like it. considering having a built up sr24 would be 100 times more bad *** than any ka hell i just want a sr22 with like 400whp and that would be 100 times more bad *** imo. to me doing up the ka is like putting time and effort into something that was never meant to be given attention its not a high performace engine and wasnt/isnt spose to be. it is what it is. you can build up any engine(hense souped up cavaliers,ect.. no matter how powerful are f'n stupid)) if you want but come on. thats imo, if there was no sr in the silvia and all silvia/240's were ka powered they would never been thought of as anything but a little entry level eco coupe.

[SeVa-S13]

And if the the KA came with a little T3 hung off the exhaust mainfold from the factory and was only available in Japan you'd think the the lowly NA SR that the U.S. got was a "non-performance" engine and doesn't deserve attention.

Note to jdm fanbois: unbunch them panties--I never said the KA was a better engine than the SR, just pointing out obvious bias.

[robbbby]

.2 litres will make the volumetric effeciency of the engine better, but it wouldn't be realized in how fast the turbo spools. Headflow and CHRA design would be the big deciding factors. If displacement dictated spool time, a V8 would have instant spool.

Umm I think VE has alot more to do with spool time than headflow? VE is a result of headflow and many other things. Just for simplicity sake If a 5litre had 100% VE and displaced 5 litres in the form of exhaust i'm pretty sure that would spool up a turbo alot faster than a 2lite with 100% VE?

[robbbby]

so yea 5g's for .2l is worth it considering that means u could have a 400+whp sr powered car with pretty much instant response.

Instant response? How do you figure and extra 0.2L will give you "instant response"? I'm sure you can reach the goal of 400hp with the sr's stock bore/stroke and have a good spool up time depending on the turbo. I don't see how 5g is a good investment just to make a turbo spool faster, when you probably won't even notice a difference on the same setup without the stroker kit.

This is just obviously my opinion and I personally would never spend the money on that kit.

[ItzGenX]

I have no exact clue as to how much better it will spool a turbo, but there will be obvious low end power/torque increases along with slightly increased spoolup times. Being that it is only .2L could possibly be a night and day difference, but could also be almost no difference at all. The only way to know is to try without changing overall setups. I had my block built with 90mm sleeves and pistons while I was beefing it up (might as well eh?). The outcome is 2188cc. The problem is I am going to be running a totally different setup, so I can't compare to anything.

Also a note to robbbby:I think it is possible for 200cc to spool the turbo faster, but being 500rpm specific is not right at all. If it was a T25 it could spool way faster. The thing you all got to count in is not only the motor and it's efficiency and displacement, but the spinning mass of the turbo and it's specs also. If a KA can spool a T25 at 1300rpm (12psi), I think that a SR22 should be able to do it by 1800rpm (but no proof). Being that many modern day 4 bangers have pretty efficient flowing heads (90%+), increasing displacement would definitely increase spool. Use the V8 theory if you'd like. A friend of mine has a twin turbo mustang (twin T04E 50trim .63AR) and can spool them to 10psi by 2500rpm in 3rd gear or higher. On an SR, this turbo will spool to about the same psi by 3300-4000rpm (depends on manifold). Being a 4.6L mustang, this means that 2.3L is pushing each turbo as opposed to the SR's 2.0L. Everyone on this forum should know that the "Snake" style GT mustang cylinder heads don't exactly have the best VE. Do the math and ponder. It is the displacement that is responsible for most of the results.

[robbbby]

Ya I didn't take the turbo into consideration because i'm talking about the same one on both setups. I'm going to buy some books on automotive math and theory now.

[240SXer]

Even if it does spool faster, i don't see how it's worth the money. Just get an RB26 if you've got money to burn. That'll give you even more than .2 of displacement, plus with the cost of an SR + 4-5k in stroker kit, you can have a built RB26 that will spool faster and produce more power. IMO at least..

Bigger engines spool smaller turbos faster yes, but most of the NA engines you're talking about have higher compression which contributes to spool also. (SR 8.5 vs KA 9.5)

[ItzGenX]

SR22 does not mean it has a stroker kit. Personally I think that stroker kit stuff is a waste of money also. Boring to 90-92mm is way easier and cheaper.

[pushnlacs]

ok for one i dont get how you think 5k for a stroker kit is a waste of money??? 5k for 40whp isnt worth it??? i bet you have parts on your car that added up cost over 5k and might not even make 40whp all together. so 5 grand for 40whp plus faster spool is cool with me and yea .2l will probly get you full boost 300-400rpm faster.

so figure it this way you can make 300whp with the s15 t28 now add the stroker and you got 340whp with full boost befor 2900rpm that pretty cool, if you can tell me a turbo that will give me 340whp with full boost by 3000rpm on a sr20(still at 2.0l)id like to know cause id go for that.

[skylndrftr]

also take into consideration that the fact you get a new crank is probably worth it in itself because it'll be a stronger better built crank that can take even more hp, same for the rods to i'll bet

[s13sr20chris]

well, if somone is getting a fancy pants crank ill gladly take your stock forged and fully counterweighted crank since its pretty darn good on its own.

hey bro, you want better response and more power? you ok with opening up the motor? sleeve it, bore to 89 or 90mm, get some forged pistons and swaintech coat EVERYTHING with a good street head porting. blam, better turbo response with lower coolant temps and if you pay a little extra your valves are totally unshrouded! all that could be yours for less than 5k. that and you would have had to buy pistons for your big money stroker anyway(at least you should if they did not come with it).

i am not hating on the big money strokers. i wish i had one. i just want folks to know that you can do pretty good with a lot less(of course most of us know that). shoot, put all that greasy engine money into turbo parts of the highest quality and make awesome power!

will a gt2530 really make 360whp? i did not realize that turbo had that kind of headroom.

[pushnlacs]

yea the gt2530 sounds bad ***. i was talking with the guys at phase2 and they said a guy whos car they just recently dynoed with the 2530 put out 360whp on pump gas at 20psi on a s14 sr.

honestly the only turbo car i drove was a tsi that hits full boost at 3000rpm, now i know its not that powerful of a car but i really liked the response. i dont know how laggy 3500rpm would feel to me but i really want 400hp at the crank(i know numbers are not everything) and they said the gt2530 will be the quickest spooling turbo that can make that power witch sucks cause id like full boost by 3000rpm.

[180fan]

Meh, if you've got cash to blow on a stroker kit, you've probably got cash to blow on other parts. Bang for the buck, can't say, don't got a stroker kit. Would I get one if I had the cash? Yeah, but since I don't, nope, build the power other ways.

[RMiller]

Boring to 89 mm would get you 2.14 liters. Boring to 90 mm would get you 2.188 liters. I don't know how thin you can go with the cylinder walls, but if it's safe you would realize a pretty decent gain from the increased displacement. The 2530 is an awesome turbo from what I hear.

Full boost to 20 psi at 3500 rpm is not bad lag. I get 1 bar by 4k and it is fun to drive. It's not super slow off boost and it doesn't go crazy when it hits boost unless you give a decent amount of throttle.

It all comes down to money. You can have your block cleaned, etc. etc. and bored to your specifications for about $500. Pistons are another $400 at the least but you're still under $1,000, compared to $5,000 for a stroker kit. You can use leftover money getting a good computer with timing control so you can advance timing off boost allowing for more power down low and therefore better spooling of the turbo. Of course leaning it out off boost will have the same effect.

I just realized something. I can't believe I'm helping you out after you talked so much smack about the KA. It doesn't sound like you know what you're talking about, so let me tell you this: a gas piston engine is a gas piston engine aside from the strength of the internal parts and certain obviously flaws which no Nissan engine really has. Ford and Chevy 4 bangers make over 1000 hp in drag cars, and this isn't "f'n stupid."

"Sporty," "High Performance" motors do not need to rev high to be effective. As far as what was or wasn't "meant to be" as you said earlier, the KA was "meant" to be a reliable 155 hp motor and the SR was "meant" to be a reliable 205 hp motor.

I like both motors, and I have a CA, which I like, and I liked my KA-E when I had that. Don't talk the smack if you don't have good reasons to back your smack up.

[s13sr20chris]

let me just say...if you want it, then get it.if you get it, then take pics of it.if you get it running, post a dyno chart.if you are ever in virginia, let me ride in it.

for gosh sakes do what make you happy bro; its your car. so what if we would all do it different. i wish i could afford to sleeve my block and brag about having a sr21det or sr22det.

[pushnlacs]

for one why do you care so much if i dont want a ka??i never "talked smack" about it, i never doubted what it could do. all i did was state the fact that any engine can do what you want it to if you put the time and money into it and imo that time and money isnt worth putting into a ka.

to me the ka has no style, no taste and thats important in a car to me as well as power. all im saying is if the all 240sx/silvias came with na ka i dont think anyone would be modding them cept for mabey the same ricers that try to mod anything they get theyre hands on. i think the only reason people started doing up the ka was because people were like "man they get the sr in japan but we dont so im just ganna build this up" or thought "man im just going to go outta my way and be diffrent and do up a ka instead of an sr just so i can seem diffrent." thats just my opinion on the ka. if u like the ka cool. do one up i dont care.

i know about cars but dont at the same time. meaning i know how things work and all that but truth is no i dont know what a 400hp turbod car feels like that hit full boost at 3500rpm. i know how that power is mad and the details but dont know how it feels to drive, and that sucks. cause yea comments like"its not super slow off boost" worry me cause that means its still slow. i dont want a car thats got 400+hp but feels slow when i hit the gas because boost hasnt came on thats why i want full boost or a good amount of tourqe by 3000rpm. i honestly dont know if a small 4 can do this?? or am i ganna have to go with one of the i-6 powered cars?? im not talking smack about any one or anything. just honestly asking for opinions and some info.

[RMiller]

for one why do you care so much if i dont want a ka??i never "talked smack" about it, i never doubted what it could do. all i did was state the fact that any engine can do what you want it to if you put the time and money into it and imo that time and money isnt worth putting into a ka.

to me the ka has no style, no taste and thats important in a car to me as well as power. all im saying is if the all 240sx/silvias came with na ka i dont think anyone would be modding them cept for mabey the same ricers that try to mod anything they get theyre hands on. i think the only reason people started doing up the ka was because people were like "man they get the sr in japan but we dont so im just ganna build this up" or thought "man im just going to go outta my way and be diffrent and do up a ka instead of an sr just so i can seem diffrent." thats just my opinion on the ka. if u like the ka cool. do one up i dont care.

i know about cars but dont at the same time. meaning i know how things work and all that but truth is no i dont know what a 400hp turbod car feels like that hit full boost at 3500rpm. i know how that power is mad and the details but dont know how it feels to drive, and that sucks. cause yea comments like"its not super slow off boost" worry me cause that means its still slow. i dont want a car thats got 400+hp but feels slow when i hit the gas because boost hasnt came on thats why i want full boost or a good amount of tourqe by 3000rpm. i honestly dont know if a small 4 can do this?? or am i ganna have to go with one of the i-6 powered cars?? im not talking smack about any one or anything. just honestly asking for opinions and some info.

Stock turbo'd cars offer better results when adding modifications. Style...you're a victim of import car magazines but that's cool, lots of people are. I guess most SRs have nicely painted valve covers, so they look better. It's all good, let's get back to your question.

Ever driven a mid-90's Plymouth Neon? If you floor it in that, it will feel kind of like driving off boost in a 400 hp, 3500 full boost, SR powered car. It's not that bad. Plus, you don't go from 0 boost to 20 psi, you build a few psi super early, like 2000 rpm. If you get 20 psi at 3500 rpm you might have 10 by 3000 rpm, but it depends on the turbo. That being the case, you'll have plenty of torque at 3000, although it still won't feel like a bigger 6 cyl. If you don't have like 10k saved up for just motor stuff, leave the stroker dream behind.

[Jala47]

Doesn't Jim Wolf Tech make 2.4L stroker kits for under 5K?

[kamikazestorm420]

i was wondering .. do u even have a 240 pushnlacs?

[ItzGenX]

JWT does have the 2.4L stroker kit, but I am unsure of the price. For my motor I only bought the sleeves that are supposed to go with that stroker kit (larger bore).

[pushnlacs]

no i dont have a 240, all i have is my sts and i am planing on buying a car to build up into a bad *** street car but am trying to find whitch is best. i like the 240 because it looks good and can be had cheap and it also has potential but im just not sure if ill like how a 340whp 2.0l will feel so im not sure.

like i said iv oly driven a car that hit full boost a 3grand and i liked that response but i dont think a sr can make 340whp with full boost by 3000k with out being stroked.

oh and to the guy saying im a victum of import mags..no cause sometimes i think the **** in them is stupid as hell.im just a victum of having taste and having a very spesific goal for my car thats all. but about a 400hp 240 feeling like a neon floored, do you mean at partial throttle just driving around normal it will move like a neon thats floored??? im asking because like iv said i know about turbo cars but havnt had first hand experience driving them.

ok so here what i want to know i guess. say i have a 2.0l turbo'd car that hit full boost at 3500rpm. now when i push the gas and befor i get a good amount of boost will the car move like a modded n/a 2.0l, a stock non turbo 2.0l or slower than a regular non turbo 2.0l???? i know this all sounds stupid but like iv said befor iv been all about v8's up until now.

[RMiller]

no i dont have a 240, all i have is my sts and i am planing on buying a car to build up into a bad *** street car but am trying to find whitch is best. i like the 240 because it looks good and can be had cheap and it also has potential but im just not sure if ill like how a 340whp 2.0l will feel so im not sure.

like i said iv oly driven a car that hit full boost a 3grand and i liked that response but i dont think a sr can make 340whp with full boost by 3000k with out being stroked.

oh and to the guy saying im a victum of import mags..no cause sometimes i think the **** in them is stupid as hell.im just a victum of having taste and having a very spesific goal for my car thats all. but about a 400hp 240 feeling like a neon floored, do you mean at partial throttle just driving around normal it will move like a neon thats floored??? im asking because like iv said i know about turbo cars but havnt had first hand experience driving them.

ok so here what i want to know i guess. say i have a 2.0l turbo'd car that hit full boost at 3500rpm. now when i push the gas and befor i get a good amount of boost will the car move like a modded n/a 2.0l, a stock non turbo 2.0l or slower than a regular non turbo 2.0l???? i know this all sounds stupid but like iv said befor iv been all about v8's up until now.

At 0 boost the car will feel slower than an n/a 2 liter, it has lower compression. At 3k with the size turbo you're looking at it start to feel way faster. It's not a big deal. It doesn't matter if you have no power at 1500 rpm because you're never going to be doing 1500 rpm. When you start from a stop you just ride the clutch so the rpms stay usable.

Check it out. Turbo lag gets bad when you strap a t78 on a 2 liter. Then you have a crappy powerband. You have an STS, right? So your usable powerband is like 1.5k-6k. A 340whp SR has a usable powerband from about 3k-7.4k. That's almost the exact same size. Under 3k, there still is power, just not passing power.

If want the feel of your STS, the KA comes pretty close. You can get 340whp with really, really fast spoolj, but you won't rev quite as high so the powerband will be similar in size. Check out http://www.ka-t.org.

[Nismo_Freak]

All that matters to a turbo is mass flow. Nothing else. Higher VE's, larger displacement, all add to the mass flow of the motor which makes the turbo spool quicker.

Displacement does not increase VE, VE is a percentage based on flow vs. displacement.

A 2530 at 20psi is not going to live very long. They are notorious for dying on GTR's running high pressures as well.

If you want reponse get a KA-T. Why spend tons of money stroking the SR, eliminating it's benefits when you have a perfectly capable 2.4L at hand.

[Nismo_Freak]

ok so here what i want to know i guess. say i have a 2.0l turbo'd car that hit full boost at 3500rpm. now when i push the gas and befor i get a good amount of boost will the car move like a modded n/a 2.0l, a stock non turbo 2.0l or slower than a regular non turbo 2.0l???? i know this all sounds stupid but like iv said befor iv been all about v8's up until now.

1. It won't move until the turbo starts to spool, this doesn't mean full boost this means when it starts to build positive pressure.

2. Non turbo SR20DE's have alot of low end grunt for their size. They are alot like the KA in that regard. Thusly the SR20DET does have some driveable power when you are not in boost. You just won't be setting land speed records.

3. 4-cyl engines make power above 3k. Regardless of what you do to it, they are built solely to make power above 3k. Pushrod V8's are built to make power until about 5-6k, where the torque drops off significantly. If you want to go fast... get a V8, it is the proven method of go-fast.

4. You get used to driving the car with no low end power.

5. Corelation to Number 4; you learn to drive the car in it's powerband. When the car is moving you will see over 3k rpm's nearly all the time. On the highway at 70 mph you shouldn't even have to downshift to accelerate. Especially in 5th because you have a higher load on the engine.

6. Dynos can affect spool up due to load differentiation between real driving and the dyno type.

[s13sr20chris]

heh, has anyone noticed we all try to do the impossible? all my friends with v8's are trying to build high rpm drag cars. then, here we are splitting hairs about drivability at low rpms.

shoot, my sr will easily chirp the tires just transitioning from coast to half throttle in first at around 2k rpm. it falls flat from then till boost though.

too bad import stuff is expensive. i wish i could just point you in the direction of a good crate motor(reasonably priced) ans say, "that'll do ya".