is the S15 SR swap really worth it compared to the s13 or s14

[JoHn E]

for a usdm S14

is the stock 250 hp really worth the extra money to get instead of say a 200hp stock redtop or a 220 stock s14 blacktop

it seems like the earlier SR's are more common from what i see on the forums and ive read about redtops with 400-500 hp

but does an s15 blacktop have more potential for hp in any way over the redtop or the s14 blacktop? or is a redtop or an s14 blacktop just as easily upgraded to get the same potential as an s15 blacktop?

from what i searched... is it only the turbo, injectors, vtc that makes for the difference from the 200hp of a redtop to the 250hp of a blacktop s15?


it seems like more trouble to have to deal with the 6spd transmission in the swap...

and would there be more help available if someone were to do a redtop swap instead of the s15 blacktop since its more common?

from common sense it seems like a s14 blacktop would be easiest for a 97-98 s14 240sx...

i saw this on heavythrottle for the s14 blacktop: "Fits into US 240SX S13 and S14 chassis with no modifications to motor or transmission mounts. Uses the host chassis driveshaft and differential. Uses the standard turbo SR downpipe and stock catalytic converter location with the 240SX catback exhaust. 89-90 chassis will need tach or cluster, power steering lines and reservoir from 91-94 chassis."


is mileage the only thing better about the s15 blacktops? or would it be just as easy to find a redtop or an s14 blacktop with just as low mileage?

[sliddinsil8o]

i think you have all the answers in your post...manly the reason why s15 sr's are more then the s14/s13 sr's is do to the fact that they are newer.

[drift freaq]

ok you ask a lot of questions I am going to answer. Though I will say you should read to find this info.
It all depends on what your goals are. If your going for a stock reliable HP setup then going with the s15sr might be a very viable solution. Thing is once you start spending money on Turbo's and injectors it starts adding up and quickly(on any engine). You do notice the difference in bottom end torque with the VTC. I actually feel at this time that going with a S14SR or a S15SR is a wiser decision over the older more beat S13Sr's that is my opinion.

[Yoshi]

Get your flame suit on newbie.
This forum has a practically zero tolerance level for people who don't try to help themselves before asking questions.

Threads: 138,583, Posts: 1,350,685, Members: 40,053

Do you think just MAYBE in that 1.3M threads, and of over 40k members, that no one has asked that before? Like... I dunno... 50-60x over?

Do yourself a favor and use the SEARCH as much as possible, only start a new post and relist the question if you couldn't find the answer... if you couldn't, take some quotes from what you DID find and people will be much more apt to help you out.
This might come off as sounding mean, but it's really very true. Zilvia helps those who help themselves; just like the big man upstairs. Failure to search first is only going to result in locked threads, lots of flames, and probably hurt feelings.

On the bright side, you sound like an intelligent person, who's at least articulate enough to form decent posts, so I'm not worried you'll find your stride here... and in the spirit of good faith I might direct you to some of these threads to start with:
http://www.zilvia.net/f/showthread.php?t=62607
http://www.zilvia.net/f/search.php?searchid=1342187

[Justin Bernstein]

^ somebody wants to be a moderator, or just fuck one.

[Yoshi]

^ somebody wants to be a moderator, or just fuck one.

Hey, thanks for contributing something meaningful to the thread, good job... maybe you should look at some of the other posts I've made.

I'm apparently an asshole in your eyes for trying to nicely but firmly guide a new user in the right direction? Oh damn, you got me. I didn't realize that implied that I wanted to be a mod... or fuck one apparently.

Does that make you feel better about yourself?
I've been here helping people a long time... I see you've been here being a keyboard cowboy for a couple months. Maybe after a few more you'll see that there are people that are here for the community and those that aren't.

Don't get your panties in a bunch just cuz you can't wrap your head around that fact that I want to contribute to zilvia for no tangible gain. Is it so hard to believe I want zilvia, and the 240 community as a whole to be a better place; but you just want somewhere to belittle people cuz daddy didn't love you enough, or becuase you have self-esteem issues, or wherever your animosity stems from. Have I wronged you in some way, or do you really need to post things like this to attempt to fill some void in your life? Why can't we all just get along? :love:

[drifting_changed_mylife]

^^^^^^^^^^ ouch.....

but anyways!!!!!!!!!!!


idk i've seen s 15's pushed up to around 600 hp stock internals... thats pretty nutz! i would love a s15!

[Paul2x]

I think Drift freaq said it best.

if you not going to do many mod's and want a reliable set-up, the 15' motor is a good option...b/c they usually have the least amount of miles.

but most 15' guys that want to make big hp #'s switch to a 13' head anyway b/c it make much more top end power so... if you going to build it completely don't waste your time

just my .02

[REVo]

The s15 SR's as said before would be best for a reliable set up...but you could make either of the other two reliable..it just depends if you want to build up an engine...something that you could get started on with the price difference between the engines as well.

[Justin Bernstein]

[quote=Yoshi;1385832]Get your flame suit on newbie.
This forum has a practically zero tolerance level for people who don't try to help themselves before asking questions.

Threads: 138,583, Posts: 1,350,685, Members: 40,053

Do you think just MAYBE in that 1.3M threads, and of over 40k members, that no one has asked that before? Like... I dunno... 50-60x over?

Do yourself a favor and use the SEARCH as much as possible, only start a new post and relist the question if you couldn't find the answer... if you couldn't, take some quotes from what you DID find and people will be much more apt to help you out.



yea.....sounds like kind support to me, either that or just another arrogant jerk trying to bust others balls about Zilvia etiquette....get over yourself.

I have read your other posts, namely the one on s15 conversion and I commend you for your help. But it dosent give you the power to be a dick.

wow pushed your buttons a little didn't I?

[Yoshi]

[quote=Yoshi;1385832]Get your flame suit on newbie.
This forum has a practically zero tolerance level for people who don't try to help themselves before asking questions.

Threads: 138,583, Posts: 1,350,685, Members: 40,053

Do you think just MAYBE in that 1.3M threads, and of over 40k members, that no one has asked that before? Like... I dunno... 50-60x over?

Do yourself a favor and use the SEARCH as much as possible, only start a new post and relist the question if you couldn't find the answer... if you couldn't, take some quotes from what you DID find and people will be much more apt to help you out.



yea.....sounds like kind support to me, either that or just another arrogant jerk trying to bust others balls about Zilvia etiquette....get over yourself.

I have read your other posts, namely the one on s15 conversion and I commend you for your help. But it dosent give you the power to be a dick.

wow pushed your buttons a little didn't I?

u know, honestly, u did slightly, but more because I was already in a bad mood from personal stuff... but that aside, I was loudly pointing out what you just said, proper zilvia etiquette.
If u think i was being a dick, so be it; but what you think ultimately doesn't matter.
If what i said curbs one noob and makes him/her search first, then it was worth it.
I gave links to help and commended the OP on having a decent post with some thought behind it.
You're the one who decided to pick a fight, contribute nothing, and post whore it up. Say what u want past this I'm done mucking up the OP's thread... if u wanna continue this PM me, or just agree to disagree; i've said my peace.

[Justin Bernstein]

Fair enough,

anyway, dude get the s15 motor. If you have the money to decide between the two/three motors, then just go baller and get the newest one that you can.

The slight power increase over a stock redtop plus the inhanced reliability makes it a choice that i would make if I had the cash...Plus i hear good/reliable/low km redtops are becoming harder to find.

[mRclARK1]

Low mileage donor redtops are getting rare. I've had mine for almost two years now and they were getting a little tricky to find then.

I'm with drift freaq on this one. If you have the money and plan to build the motor anyway, go for the cheaper S13 and S14 motors. If you want stock reliable HP... go with the S15 motor.

[DJ_Sunrise]

s14/s15 motors are LOW PORT, for better torque. S13 are high port, for more top end...Low/High refers to how the fuel gets squirted into the cylinders.
S14 adds T28, VTC..
S15 adds an inconel turbine exhaust prop, wall between wastegate and turbine..and 444cc injectors instead of 370s. S15 turbos can be pushed for a bit more power. also, 444cc injectors will run a bit more boost without the need to upgrade, unlike the 370s...saving you $400/$500 for new injectors, atleast for a while...

VTC/low port adds much more torque.. however.. VTC motors are prone to snapping cams around 400hp, maybe a little more.. maybe a little less.. if you plan on pimpifying your motor with a rebuild and big turbo, dont waste your money on s14/s15 motor.. VTC alone isnt worth it.. and you would have to switch heads regardless after about 400 horse... if u plan running sub 400hp and no rebuild, s14/s15 motor is your best option, due to the lower mileage...

-Bart

[fliprayzin240sx]

honestly, if you can afford to look into an S15 swap, I'd say you can afford an RB25 swap with upgrade. I mean I hate to say it but I have yet to see an S15 setup go less than $4500 in the states. Biggest reason why people are intrigued with the S15 engine is the rarity of it and the 6 speed. Well I got a S15 setup in the car Im driving here in Japan and the original owner went thru 3 6speed tranny in a month. Finally got fed up with it and stuffed a S14 tranny and havent had an issue in 2 years. There isnt much difference between a S14/S15 engines. Like pointed out, the S15 got a tad bit bigger injectors and bigger turbo than the S14 thats why it makes more power. With money youll save in buying the engine alone, you can spend that money on a better turbo than the T28. Then with the money you'll save on the install (since S15 wiring and install is more PITA plus the whole speedo thing) you can use that money for more upgrade. Once you get to a certain HP level, the VTC in the head becomes more of a hinderance. The S15 engine I have doesnt have the VTC in it so it can run bigger cams. First thing you have to figure out is what's your plan with the car and then set an HP goal. Itll make things easier and cheaper in the long run.

Anyways, welcome to zilvia...dont worry about getting flamed, atleast it sounds like you've done some researched about the subject before you started asking questions...always a good start in here...

[uwntsum]

hahaha whoops

[eastcoastS14]

my first questions are always: what kind of cars have you driven before?
and are you sure you need more power?

if you are new to 240s dont worry about the 400 and 500hp SRs, buy it swap it and learn to drive it, more power comes later....any year SR is capable of making good power...Id say get a later year for the mileage not the power potential...cause like someone else said at the price of an s15 swap you should just go rb or even 2jz:rolleyes:

[steve shadows]

You do notice the difference in bottom end torque with the VTC. I actually feel at this time that going with a S14SR or a S15SR is a wiser decision over the older more beat S13Sr's that is my opinion.

agree completley with this.

If i ever do another swap im going to play with VTC motors.

If your looking for sub 400whp its the way to go in terms of container crap.

on the rb hype, i still dont get it, its cool and fun but still not my cup of tea.

Ill still tune them though ;)

[SiI40sx]

Internally built ka, with a s15 turbo, your good to go. Almost everything thats 300whp costs about the same at the end of all the purchases to get there.

[weagle]

Get your flame suit on newbie.
This forum has a practically zero tolerance level for people who don't try to help themselves before asking questions.

Threads: 138,583, Posts: 1,350,685, Members: 40,053

Do you think just MAYBE in that 1.3M threads, and of over 40k members, that no one has asked that before? Like... I dunno... 50-60x over?

Do yourself a favor and use the SEARCH as much as possible, only start a new post and relist the question if you couldn't find the answer... if you couldn't, take some quotes from what you DID find and people will be much more apt to help you out.
This might come off as sounding mean, but it's really very true. Zilvia helps those who help themselves; just like the big man upstairs. Failure to search first is only going to result in locked threads, lots of flames, and probably hurt feelings.

On the bright side, you sound like an intelligent person, who's at least articulate enough to form decent posts, so I'm not worried you'll find your stride here... and in the spirit of good faith I might direct you to some of these threads to start with:
http://www.zilvia.net/f/showthread.php?t=62607
http://www.zilvia.net/f/search.php?searchid=1342187

That means there are 40,000 other members to give him an answer.

This telling everybody to search thing is getting old. If they dont, just give them an answer or point them to the thread. THE SEARCH FUNCTION IS HORRIBLE.

Do what you want. If you can afford to do a s15 motor do it. but dont do it becuase of what other people tell you to do. Personally a 392 hemi out of one of them new challenger would be fuckin sweet.

[fliprayzin240sx]

To me, its just not worth it cuz of the price of the setup and the PITA to install due to the speedo/wiring thing. Tranny is crap, I've met people out here who's run S15 trannies and they're absolute crap.

[uwntsum]

wow... i replied to this thread and found out it was 2months old so i cleared my post. So now i get 3 neg comments... yea i wasn't paying attention since i was reading back posts and i get neg feedback for that???? How many times have other users accidentally posted on old threads and forgot to look at the last date and recieved neg feedback???? I'm freakin sorry that i pissed off someone that couldn't just simply ignore my comment. You figure with all the flaming on other members you would pay more attention to that. But instead some angry asshole decides to give multiple neg comments on a SIMPLE mistake. We are all human and we all make mistakes sometimes. And i bet everyone that posted AFTER me didn't even happen to look that the last person who posted was over 2months ago! Should we now all go give them neg feedback and flame them as well for not paying attention???!!!

[cgtdream]

LOL *EDIT* DAMN THIS POST IS OLD..WONDER IF THE ORIGINAL POSTER FIGURED OUT WHAT HE WANTED, LOL

hmmm, i was at this guys same dilemma awhile back...i considerd that, with the s13 redtop---been there, done that,good for its power, but meh, not for me....

then the s15 blacktop..good engine, and hey you even get the 6 speed tranny, plus vtc..hmm, for my less than 300hp goals, this was perfect, but damn those things are expensive, plus the 6spd thing is alot of extra work, and from what i hear not worth it if i choose to try and put it in(lol, i need a tranny).....

then the s14 blacktop..basically a s15 blacktop, but with an untweaked s15 turbo, yahhh..oh wells, the turbo can always be ungraded if i choose so, and hey guess what i also have vtc still....so a good fun little motor, a few hundered cheaper than the s15, lol, it came down to my personal pref. after that....Besides, its more fitting to me to have an s14 motor in my s14, lol...not entirely my reasons for choosing that engine, but hey, whatever right...good engine hunting bro..and oh yea, dont forget to check the dealers section on this site, as they have some good deals..peace, and good luck ^_^