s15 sr20det

[slickSX]

I just got a 1992 240sx fastback. In pretty bad condition to say the least. Trying to bring it to a respectable lvl before i really start to build it. My question is....will an s15 sr20det fit?

Im new here, and if this was posted somewhere plz direct me in the right direction. And there will many more questions to come once i start finding more things wrong with the car. lol

Thanx in Advance
Slick

[logik23]

Get an S14 SR with a BB turbo, will be the same.

[S15Drifter]

The engine from the S-15 will fit. You'll need the transmission and the rear end. To mount the transmission in your car you'll have to do a little reshaping to the tranmission tunnel. You need the rear end because of the speed sensor that's located in the rear. You need the S-15 ECU or an ECU that has a S-15 map loaded. And depending on the suspension mods, you might need a new drive shaft. Just make sure you have a S-15 drive shaft also.

The S-15 engine is the best base starting point, but it's also the most expensive starting point. The S-14 engine is cheaper and it's easy to get a T-28 turbo (new or replacement) to replace the stock turbo if the engine you get doesn't have a T-28 turbo installed. The 5-speed transmission from the S-14 doesn't require modifications in order for it to be installed.

[slickSX]

a 6th gear would be nice to have, but not at all important. So you guys are leaning towards the s14 sr....

this engine will fit, is there any reshaping of the engine bay to get it in? and is a new tranny required? and lastly will this engine pass emissions in southern california?

[XeVeNskyLiNE]

well heres the deal with the S15 tranny.

it sucks. its a 6 speed basically stuffed in the gearbox of the s14 5 speed, therefore the gears are thinner and cant handle as much power, or thats what i've learned over the years. like logik said, if you really want a s15 sr20, just get the s14 then find a s15 turbo, it'll be a hell of alot cheaper. i dont live in cali myself, but i think no sr20s period will pass emission, sorry. you can always down here to good ol Texas tho

[logik23]

They've been nown to hold 450hp so their not that weak, but the 5-speed is much stronger. Anyways, to me, the S15 SR is just not worth it.

[Pavlo]

All the sr20s, ka, ca and with modifications RB fit into the same engine bay. But for S15 you also need a new driveshaft, and a speed sensor which is located in the rear end in S15 s, so you basicly need the whole rear end with axels and all, if you want to have a proper swap.
or just get a custom driveshaft and do something about the speed sensor.

[LaYzIeNoY]

ok the S15 to install can get pricey and the engine is alot

personally the S13 or S14 would be better, the S13 doesn't have the VVT of the S14s or S15s but they still can produce good power with proper mods

and engines fitting in the bay I've seen a few V8 swaps lol

in california no SR would pass smog, from what i hear even if you can somehow make the emissions pass the visual test would never work

[slickSX]

thanx guys for the replies.

ok i was driving the car last night and noticed more problems...lol (told you guys this was coming)

well i noticed that the clutch doesn't come all the way out after i press it down. and also noticed that when i shift into third it feels like it is grinding.

will the s14 swap remedy this?

[sidewayzS13]

ive heard bad things about the 6 speed dont a lot of people w/ s15's swap it to 5 speed? and a s14 swap would remedy ur transmission problems because it comes w/ the tranny but u wont pass smog in cali will u and u wont pass the visual either

[Importboom]

s-15 sr20det = blacktop? 250hp? 220rwhp? i think it might be off im just guessing.

[Hit_N_Run-player]

ok guys i just bought this SC book and it includes everythingon swaping the sr20det and info on the s13, s14, and s15 engines...heres the specs on the engines...


SOURCE
1991-1993
S13 silvia &180sx
STOCK OUTPUT
202HP@6000rpm
203lb-ft@4000RPM
Stock turbo
garrett t25
0.64A/R Exhaust 0.80A/R compressor
Features
High-port head, 370cc/min injectors
Identification
Red valve cover



Source
1994-1998 S13 180sx
Stock Output
202 hp@6000rpm
203 lb-ft@4000rpm
Stock turbo
garrett t25
0.64A/R Exhaust 0.80A/R compressor
Features
High-port head, 370cc/min injectors
Identification
Black valve cover, flat on top




Source
1994-1998 S14 Silvia
Stock Output
217hp@6000RPM
203 lb-ft@4800RPM
Stock turbo
Garrett T28, ballbearing 0.64A/R Exhaust, 0.60A/R TO4B Compressor
Features
Low-port head
VTC cariable intake cam timing
370cc/min injectors
Identification
Black valve cover with a hump that peaks at cyc. No. 3




Source
1999-2001 S15 Silvia
(Manual trans. ONLY)
Stock Output
247hp@6000RPM
202 lb-ft@4800RPM
Stock turbo
Garrett T28
ballbearing 0.64A/R Exhaust
0.60A/R TO4B Compressor
Features
Low-port head
VTC cariable intake cam timing
444cc/min injectors
better materials in turbo and better wastegate flow design
Identification
Black valve cover with a hump that peaks at cyc. No. 3

[R.W.240]

Originally Posted by sidewayzS13

ive heard bad things about the 6 speed dont a lot of people w/ s15's swap it to 5 speed? and a s14 swap would remedy ur transmission problems because it comes w/ the tranny but u wont pass smog in cali will u and u wont pass the visual either

Not Just the tranny. Most S15 / S14 Owners actually swap in the Flat-top SR when gunning for over 500HP (or at least the head) to get the High-port.

If you want to remain fairly stock Id go with an S14 SR, Power FC, Exhaust, Intake, Intercooler, 550 Injectors, and a Fuel Pump. that setup will get you close to 280 Wheel. after that a T28ish Turbo and you'll be putting out at least 350whp

[Hit_N_Run-player]

but the blacktop s14 sr20s come stock with a garrett T28 TO4B...and its already ballbearing...what is the point of upgrading to another T28 size turbo?

[R.W.240]

Originally Posted by Hit_N_Run-player

but the blacktop s14 sr20s come stock with a garrett T28 TO4B...and its already ballbearing...what is the point of upgrading to another T28 size turbo?

Not many S14s have the Ball Bearing Turbos. The S15 Spec R (from what I understand only the Spec R S15 has them) has them and its good to about 320whp. The only way to be certain its BB (short of spinning it) is the divider between the wastegate and Exhaust ports.

Regaurdless I left It vauge by saying "T28ish" and there are quite a few sizes of the T28. So I guess if he was gonna go over 320whp Id say go with an appropriatly sized Tomei / Apexi Turbo. (just cuz I like IHI for some reason )