best sr choice for 98 240sx

[SquirrelOnFire]

Hi, I've been lookin round a bit, but can't seem to find the answear to my problem. Basically I wana know which SR20DET engine is the best and ESIEST to pop into a 97-98 240sx. Also what kinda problems might I face if I was to place a red top s13 SR in there. :help

[pric65]

buy an european 98 Silvia, which looks exactly like the american 240sx, but has the sr20det.And i think there's a whole bunch of threads about s13 engine--->s14

[Ace]

There is a lot of stuff on this. You get to decide. All of the SR20 motors are good. They all have their advantages and disadvantages. I chose a S13 Blacktop for my S14. I plan to upgrade the turbo, so the S13 with the high port head was my best choice. Just search the forum you'll find a lot of stuff.

[SpeedRacer1]

S13 SR into S14 = cost efficient

S14 SR into S14 = barely anymore power, no more torque than S13 SR, closer to the stock "JDM" style.

[goldollar]

s15 motor cost the most, but why not, 250hp and you already have the right chasis, and if you ever go jdm it will be the correct motor.

[SquirrelOnFire]

Thanks for the advice, I'll look around but I think ill go with the blacktop s13 becouse of the price advantage.

[SquirrelOnFire]

oh and just of the topic , what brake upgrade would anyone recomende?

[TruboostPerformance]

I would recomend the skyline GTS-T brakes up front, these guys in Japan all run them up front...

[vboyq]

if u wanna be cost efficient then go w/ the Z32 brakes

[SWIFT_DRIFT]

s15 motor cost the most, but why not, 250hp and you already have the right chasis, and if you ever go jdm it will be the correct motor.

you are an idiot goldollar, he does not have the right chassis. The S15 chassis was never and will never be sold over here. a 1998 240sx is an s14 and the correct jdm motor would be an s14 blacktop. also the only difference between an s14 and s15 motor is a ball bearing turbo and 480cc injectors. goldollar i bet you didnt even know that either.

[goldollar]

ok you ****ing *******, your right about the chasis but thats not what i was talking about. i know that the last chasis code for the 240 was an s14.5, what i was saying is that in my opinion he has the nicer body style and he should go all out and ang get the s15 motor, if he has the money. Also the differences in the s15 and s14 motor isnt just that the s15 has bigger injectors and daul ball bearing turbo, it has more power. and if i were you i would keep your ****ing mouth shut if you got negative things to say about people, cause calling someone an idiot just aint cool, and if your going to act like a *****, then get a tampex. :ak47 :angryfire :bash

[SquirrelOnFire]

bout hte brakes, anyone know anythin bout this BREMBO kit:

http://www.overboost.com/obs/p...name=

[SWIFT_DRIFT]

ok you ****ing *******, your right about the chasis but thats not what i was talking about. i know that the last chasis code for the 240 was an s14.5, what i was saying is that in my opinion he has the nicer body style and he should go all out and ang get the s15 motor, if he has the money. Also the differences in the s15 and s14 motor isnt just that the s15 has bigger injectors and daul ball bearing turbo, it has more power. and if i were you i would keep your ****ing mouth shut if you got negative things to say about people, cause calling someone an idiot just aint cool, and if your going to act like a *****, then get a tampex. :ak47 :angryfire :bash

HAHAHAHA YOU ARE SO DUMB! The last S chassis code was the s15. there is no official s14.5 that is just a made up car by putting an s15 silvia front end on an s14. you say in your first post to go jdm...well the "jdm" thing to do would be to put an s14 blacktop motor in his s14 240. BTW NO ****ING **** SHERLOCK the s15 motor has 30 more hp then the s14. WHY IN THE HELL DO YOU THINK THIS IS TRUE? Could it be BECAUSE of the fact the s15 has a better turbo and larger injectors to SUPPORT MORE HP?!?! And no I will not keep my mouth shut because you all providing false information on this board. Discussion over.

[SpeedRacer1]

i know that the last chasis code for the 240 was an s14.5:bsflagAlso the differences in the s15 and s14 motor isnt just that the s15 has bigger injectors and daul ball bearing turbo, it has more power. :bsflag

Soooooooo where does the S15 get the extra HP? If its not from the upgraded injectors that went from 380cc-480cc, or the T28 that had an upgraded internal wastegate design and better turbine. Please elaborate because I guess ive been assuming what Swift was assuming.

BTW, word on the street is that both have BB centersections, but thats beside the point.

Back to the original topic, get the S13 blacktop:ylsuper . If he wanted to go all out and had the money he would just get an RB26DETT, 2JZ GTE etc... etc....

[goldollar]

Believe or not I do no the difference between the two motors and why one has more power than the other. I don't know everything, I can be wrong at times but what I was trying to say is if I'm wrong about something or not clear about what I'm saying don't, don't come out and call me a idiot cause that **** aint cool. If I'm wrong just let me know I'm trying to learn as much as I can about 240s and whatever else

[Cattalbus]

lets not forget to point out the 6speed on the s15 which supposedly sucks balls! for the money Id much rather buy a RB25 than a s15 Sr20. but hey what do I know.

[SpeedRacer1]

Believe or not I do no the difference between the two motors and why one has more power than the other. I don't know everything, I can be wrong at times but what I was trying to say is if I'm wrong about something or not clear about what I'm saying don't, don't come out and call me a idiot cause that **** aint cool. If I'm wrong just let me know I'm trying to learn as much as I can about 240s and whatever else

The point is, if you are wrong or do not know what you are talking about, then don’t type anything at all. You think you may be helping when you’re in fact falsely educating a fellow enthusiast. It may not seem true, but everyone has a commitment to post as much fact as possible. What if you gave someone information that caused them to break a part on their car or worse, blow the engine. Then that incorrect info has bad consequences.

The S15 is a decent engine, I am pretty sure I could even find a source to help me wire it, but at the moment it is truly an overpriced luxury. The transmission could probably handle the power some people want to lay down, if not, there is nothing wrong with upgrading the transmission to handle anything.

[hokiruu]

DESPITE THE RIDICULOUS CRAP ABOVE, SQUIRREL, IT REALLY DEPENDS ON WHAT YOUR GOALS ARE AND WHICH APPEALS TO/SUITS YOU YOU MOST. Are you DIY or paying someone else to do it for you? I have a '95 (wish it was a nice '98 like yours) and am installing an s14 kouki SR ('98 whatd'ya know!) engine into it next week. I think that the s14 will be a little easier to install DIY overall. Despite people always saying the S13 is a better engine because of port design, no VVT etc. the s14 is a very capable engine and is in no way really inferior to s13 in the end. S14 is more prone to bolt-on tuning, which is fine for me, since there are no really good shops near me and I want to do as much work on my car myself as possible. As far as s15, it will be the hardest to install yourself, but makes the most power in stock form, and yes, it IS because of the turbo and injectors amongst a few small other differences. Like they said above, it also has a 6-speed transmission, which people have varying opinions about, but I have heard some people swap in favor of the older 5 speeds. I personally was looking for easier installation for myself, a decent amount of power in stock form, and of course the whole JDM nerd "authenticity conversion" thing. I am even trying to use the JDM cluster. I also didn't want and can't afford the cost and time and rebuilding internals and upgrading the turbo. BTW, the s14 BB t28 blows the s13 t25 away! So s14 it is for me for a balance of most power in stock form, ease of install, and conversion generation "correctness" (even though my car is zenki-that could change later though). However, any SR can be great if you just do it right. I have seen poorly done s14s with s15 SR's and in that case would have preferred a properly installed and tuned s13 in an s14. Good luck!

[SquirrelOnFire]

Thanks Hokiruu, ppl just started talkin smack and everyone forgot what this forum is bout, but thats awsome advice, just one question; in the long run what would cost me more, poping in the s13 or the s14 (and i noticed that they are like a $1000 more), plus some bolt ons to get the car swinging at around 300 horses.

[hokiruu]

Ooh, for 300 horses (especially to the wheels) you will need more than just a few bolt ons. Of course "a few bolt ons" is a very arbitrary term. If you are on a bolt on budget like me (once I have the engine in maybe a few hundred here and there) or just want to keep things clean and simple, a stock s14 sr will get you closer to 300 than stock s13, *but not all the way there* on the stock engine and turbo. If 300hp is a serious goal you are determined to reach and surpass soon after you obtain your engine, you will need to upgrade turbo and fuel delivery along with simple engine strengthening parts like head gasket, valvesprings, and rocker arm stopper. Oh yeah, you will need fuel management (ECU re-tune and/or piggyback, or stand alone) of some kind too. This all adds up to about $2800 in addition to the cost of the s13 nor including labor , and especially, not including upgraded internals, so you won't be able to safelt and reliably run this setup past 350hp without doing that too. In this case, just get an s13 SR and save the money you would spend on an s14 SR. Although this will cost significantly more than a stock s14 SR in the end, it will far outperform it. I know after my nice and thorough swap is finished with all the basic bolt on goodies I am turning my attention and dollar to other areas of my car. I am not in a hurry to get huge horsepower without rounding out the cars performance as a whole, so I chose s14 SR because I can still always do everything to upgrade the s14 later like the s13, but until I do, I will have a better turbo and more power. Realisticaly think about what you want and then what you can afford, and the answer will make itself apparent.

For the record, I bought my '98 S14 engine with some extra parts from the Silvia it came off of for $3,800. This seems high, but the engine has uncommonly low milage, so I popped for it. I mean, it's practically NEW.

Decent S13 Red or blacktops can be had for about $2500. Of course these engines *generally* tend to have more milage and may have been sitting awhile longer. And there's not a ball bearing T28 and VVT. But you do get the supposedly more desireable turbo-happy port design. They take very well to turbo upgrades.

Damn that was a long post, I must like you. Hope that helps you with whatetever decision you decide to make. Good luck!

[SpeedRacer1]

Forgot a couple things, exhaust~$600 and FMIC ~$1000. The mileage thing isnt as big a deal as everyone plays it up to be. It depends more on how the engine was driven which cannot be determined.

The S15 T28 with 550cc's, a larger MAFS, FMIC, headgasket, camshafts, AF/ECU tuning, street disc and a larger fuel filter would be the easy way to get well over 300+ reliable RWHP.

[hokiruu]

I was assuming the exhaust and FMIC would go along with any swap. I guess I stand corrected about the options Speedracer mentioned, because I didn't think the S15 turbo could put down "well over 300+ hp" @ the wheels. I was always told that with the right tuning including cams, it could REACH 300hp. In any event, that is not a small amount of money, but excellent bang for buck.

[SquirrelOnFire]

Thanks again, and like I said I wana get to 300 horses in the long run, but probably a brake and suspension upgrade is in place for me right after the SR.

[SpeedRacer1]

You should pick up some HyperRev's, Option's, Option2's and other mags, you would be suprised how much more potent SR's can be with the standard upgrades when tuned right.

[TruboostPerformance]

I would go with the S14, these guys here in Japan so that is the way to go, they say there is much more potential for tunning. So that is the word on the street here in Japan

[hokiruu]

Wow. And everyone else here say the opposite. I hope I am makng good power with the simple stuff I've got. Swap starts tomorrow!!!

[SquirrelOnFire]

hey hokiruu , all you need now is some pics of ur car with that hot SR in it on your page.

[hokiruu]

yeah i know. at the moment it's what you could call ricey looking plus battle scars. busted body kit w/ option2 stickers are pretty much all i have to show until I finish the swap. I will post pics of the swap after it is complete. Tomorrow morning... my 240 will never be the same :ylsuper

[mmdb]

hey hokiruu i was wondering if you knew if hitting over 310 hp was feasible on stock internals on an s14 sr20det, assuming i was going to stick on an upgraded fuel, turbo, and some tuning.

[hokiruu]

yes. that is totally feasible. For the time being, my goal is to see how much power I can get out of stock turbo/internals, then upgrade turbo, then maybe rebuild. I like the idea of trying to get around 300-340hp out of a stock bottom end w/upgraded turbo etc. plus cams. I am not exactly sure how I would do that and it won't be for awhile though.