Help figuring out what/where my SR20DE came from.

[Wookie384]

Okay, So I recently bought an SR20DE, full motor and harness without the ECU, and also came with an APEXi 4 into 1 header, it was an offer I couldn't pass up. I'm trying to research the motor so I could find/locate the correct ECU for it. I've done a bit of searching and I got very little results, and considering I'm a bit of a newb when it comes to SR's I figure I'd post here to see if anyone could point me in the right direction. The engine and block are stamped 52F 1L, It's a high port head with a sliver/unpainted valve cover, has red injectors which I assume are 270's as found on a KA(correct me if I am wrong) and from what I gather it's from a Silvia. If anyone could help me figure out or point me in the right direction towards any bit of information I would greatly appreciate it! I'm also trying to figure out if the APEXi header it came with would clear the steering shaft, and figure out what to do for the intake, so help with that would also be appreciated! Thanks!

[NightSlider]

what do you plan on doing with this motor? it's the transverse sr i'm guessing, right?

[shiftdrift]

sounds like it's a silvia q's sr20de.

[NightSlider]

right, i was thinking for a minute he bought a sentra motor...lol

[Wookie384]

what do you plan on doing with this motor? it's the transverse sr i'm guessing, right?

For now I plan on just throwing it in my hatch in stock trim considering I've had my S13 in storage for way too long, This is actually going to be my first S13 after years of working/driving all my friends S13's. lol

sounds like it's a silvia q's sr20de.

Yeah, according to this chart they had on SR20forums, I figured out it came from a Silvia but thats all they had. Thanks

[shiftdrift]

s13 most likely. i had one. they are slow lol.

[Wookie384]

s13 most likely. i had one. they are slow lol.

What did you do for intake and headers? I figure its lack of power would be compensated by the fact that its lighter than a KA?

[fliprayzin240sx]

So what if its lighter than a KA? Its less power and less torque. Only way you can make this SR fun is by slapping higher compression pistons on it, solid head and making it rev to 9k.

[shiftdrift]

i just had a custom cold air intake (ka24de intake may fit) and an ebay header. but like flip said, do that.

[Wookie384]

For now I just want to get the damn thing running, I'm tired of seeing it just sit there. I figure I'll play around with it the way it is and decide to either go turbo or turn it into a high reving N/A monster. But thats later on, right now I gotta get her running which means I gotta find the proper ECU, intake and header.

[DreamN]

Seeing as you found out what model it came from did your source give any info as to what year it might be from?

Though I'm fairly certain that you could pretty much run any Silvia ECU that ran a non-turbo SR without vvti or whatever it's called.

Install it with the header you have. It'll more than likely clear. KA intake should work as well or you could always make your own.

Take a few pictures of it.

[Wookie384]

Seeing as you found out what model it came from did your source give any info as to what year it might be from?

Though I'm fairly certain that you could pretty much run any Silvia ECU that ran a non-turbo SR without vvti or whatever it's called.

Install it with the header you have. It'll more than likely clear. KA intake should work as well or you could always make your own.

Take a few pictures of it.

No, The seller wasn't sure what year it is, and everywhere I look there is no mention of what years it may be from, other than it being an S13 motor, but thats obvious when you look at it. lol

I've figured out that I need either ECU #60 or #61, I'm not sure what the differences are.

I figure I'll try using the APEXi header, it looks a little old but it has an intresting collector where it swirls, I'll try to get a pic of it up. If the APEXi doesn't work, I'll just buy a Hotshot (or something similar) and hack off the KA flange and weld on an SR flange, I've found that the SR and KA exhaust ports supposedly have the same spacing, but I can't confirm this.

I'm going to try using a KA24DE intake, maybe even an aftermarket one.

I'll definitely get pics up, especially as I put the motor in, thanks for the help so far!

[fliprayzin240sx]

Header might be iffy considering its built for a rhd car. Steering shaft for a LHD likes to get in the way. It all depends on who makes it, I've seen some that fit, seen some that had to notch the header and there are some that wont work at all.

[Wookie384]

Header might be iffy considering its built for a rhd car. Steering shaft for a LHD likes to get in the way. It all depends on who makes it, I've seen some that fit, seen some that had to notch the header and there are some that wont work at all.

Which ones have you seen that fit?

[DreamN]

xpertsnowcarver installed an s15 sr20 in his hatch with stock header. maybe he could be of some help.

difference in ecus is more than likely that one is for a manual and the other an auto. typically doesn't matter what you run. plenty folks running auto ecus with a 5 speed.

i've read the same about the flange on the header. there was a thread on fresh alloy i believe years ago where they talked about this. OP installed an eBay turbo manifold meant for an SR (not much available for KAs then) swapped flanges, but had minor fitment issues at the downpipe by very little. Don't know if they ever tried a stock one.

I've had the same thoughts on getting a Tomei manifold and swapping flanges if I ever go ka-t, but that's a dream for when deep pockets are had.

Intake is a simple task really and really the easiest issue at hand.

[Wookie384]

xpertsnowcarver installed an s15 sr20 in his hatch with stock header. maybe he could be of some help.

This will be a lot of help for Aaron (Racepar1) he is going with the same setup. haha

difference in ecus is more than likely that one is for a manual and the other an auto. typically doesn't matter what you run. plenty folks running auto ecus with a 5 speed.

I figured as much, I'm just being OCD at this point, I guess I'll just pick up whichever I find first, or whichever is cheapest? lol

i've read the same about the flange on the header. there was a thread on fresh alloy i believe years ago where they talked about this. OP installed an eBay turbo manifold meant for an SR (not much available for KAs then) swapped flanges, but had minor fitment issues at the downpipe by very little. Don't know if they ever tried a stock one.

I've had the same thoughts on getting a Tomei manifold and swapping flanges if I ever go ka-t, but that's a dream for when deep pockets are had.

I have a feeling I might end up having to go this route (chop and weld), I guess I'll find out when the motor actually goes in.

Intake is a simple task really and really the easiest issue at hand.

Yeah, thats what Aaron told me also, but again this is my being OCD kicking in. haha

Thanks for the input!

On a side note, I got side tracked and ended up browsing for catback exhausts and found out companies like Apexi offer 60mm N1 exhausts in Japan but not in the US, kinda lame, you'd think they'd offer the non turbo version in the US considering our cars are useless with 3inch piping on a car that really only needs 2 1/2 inch (60mm) piping.

[racepar1]

s13 most likely. i had one. they are slow lol.

I've driven one as well and I beg to differ. They're slow compared to a DET sure, but not so much compared to a KA. I actually really liked the one N/A s-13 Sr car that I drove. It didn't feel any less powerful then a KA and it revved much nicer and was just smoother in general. Besides, it gets better gas mileage too.

So what if its lighter than a KA? Its less power and less torque. Only way you can make this SR fun is by slapping higher compression pistons on it, solid head and making it rev to 9k.

While I do agree that making it rev to 9k would make it EXTREMELY fun, I have to disagree with the rest of your statement. The N/A SR is at least 100lbs lighter then the KA, maybe even as much as 150lbs. That's off the front end of the car too. Weight distribution would be pretty much 50/50 at that point from my own corner weight results with my KA. That'll make a noticeable difference. I also don't think it would take much to make the SR out perform the KA. With intake (maybe a freddy mani too), exhaust, ecu, and probably cams you should have a pretty nice little engine.

i just had a custom cold air intake (ka24de intake may fit) and an ebay header. but like flip said, do that.

For the intake a s-13 kade intake should work on the N/A s-13 SR. The throttlebodies come off at approximately the same angle. Wookie384's header will probably fit with a little work. It's an OLD SCHOOL Apexi short tube 4-1. Worst case is likely cutting it off after the collector and welding on a new "downpipe" section.

This will be a lot of help for Aron (Racepar1) he is going with the same setup. haha

Fixed it for you douchebag...

Yes I do have a N/A s-15 SR in my posession, I came up BIG TIME. I popped off my valvecover last night and was pleasantly surprised to find a set of TOMEI camshafts staring me in the face. I'm pretty much positive that it has been completely re-built as all the silicone sealer on the covers is definitely not OE. I need to verify my compression, if the guy spent the money on cams it's not all that un-likely that he bumped up the compression as well...

[Sileighty_85]

if you can find a part number on the wiring harness I can tell you what chassis and year its from

[McCoy]

Okay, So I recently bought an SR20DE, full motor and harness without the ECU, and also came with an APEXi 4 into 1 header, it was an offer I couldn't pass up. I'm trying to research the motor so I could find/locate the correct ECU for it.
A B13 SR20DE ECU will work just fine, might need the B13 MAF though to make it work if they are any differences. I'm using a Calum basic B13 ECU and have used a B13 JWT ECU before that.

My setup (when running NA) was basically the stock KA harness, SR ECU, and S13 SR20DE.... ran just fine this way. The KA TB was swapped over to the SR and the IACV and knock sensor plugs had to be swapped over IIRC... that's it.

If you want the S13 SR20DE ECU, I have mine still laying around...

[racepar1]

A B13 SR20DE ECU will work just fine, might need the B13 MAF though to make it work if they are any differences. I'm using a Calum basic B13 ECU and have used a B13 JWT ECU before that.

My setup (when running NA) was basically the stock KA harness, SR ECU, and S13 SR20DET.... ran just fine this way. The KA TB was swapped over to the SR and the IACV and knock sensor plugs had to be swapped over IIRC... that's it.

If you want the S13 SR20DE ECU, I have mine still laying around...

He was actually talking about turboing his eventually as well. Isn't your engine a N/A SR that you turbocharged???

[Wookie384]

if you can find a part number on the wiring harness I can tell you what chassis and year its from

Thanks, I'll get the numbers and get back to you.

A B13 SR20DE ECU will work just fine, might need the B13 MAF though to make it work if they are any differences. I'm using a Calum basic B13 ECU and have used a B13 JWT ECU before that.

My setup (when running NA) was basically the stock KA harness, SR ECU, and S13 SR20DET.... ran just fine this way. The KA TB was swapped over to the SR and the IACV and knock sensor plugs had to be swapped over IIRC... that's it.

If you want the S13 SR20DE ECU, I have mine still laying around...

Good to know about the B13 stuff, I just may take you up on the offer for the ECU, I'll keep you posted.

Thanks again guys for t all the info so far!

[McCoy]

He was actually talking about turboing his eventually as well. Isn't your engine a N/A SR that you turbocharged???
It was NA when I bought it, had the S13 SR ECU in it then. I turboed the DE with a T28, but had some detonation issues due to a failing fuel pump, but was using a JWT B13 ECU at that time. I have an S13 redtop in the car now with the Calum B13 ECU currently.

The S13 SR20DE is getting rebuilt with Mahle pistons and Eagle rods currently and will go back in once the redtop has issues or I get bored and feel like doing a motor swap.