SR20DE Swap Day 1

[SoSideways]

Originally Posted by drftone

is the 91 wiring different from the 89 n 90 for sr20det swap

1st of all, wrong topic, and 2nd of all, um, search much?

[sciamop]

How's the gas mileage on the SR20DE?

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Grassroots Motorsports magazine just did bolt-on upgrades for their 91 Sentra SE-R project car: intake, exhaust, timing advance and new fuel filter = 134hp at the wheels (113hp originally). If you can get the S13 down to B13 weight (2400lbs), it should be a good combination. The SR20DE is a rewarding engine when pushed hard (6500-7000 RPM); the KA is a rewarding engine when not pushed hard (2000 - 3500 RPM).

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I think this swap would be a lot more popular if the importers would sell them for cheap (under $500). Due to the B13/Classic, the NA SR has a decent aftermarket, so the parts are already there to make it a hit in the S13 world...

[S14DB]

Man, I got 145hp and Tq with I/H/E on the KA... Pulled to redline too.

[sciamop]

Man, I got 145hp and Tq with I/H/E on the KA... Pulled to redline too.

Who said anything about headers?

IIRC, the JDM SR20DE (9.5:1) makes 10HP more (150hp) than the US market SR. So theoretically, it would make ~144whp with I/E. Mike Kojima claims that Hotshot headers are good for 9whp. So our imaginary SR20DE is now making north of 150hp at the wheel with the same mods as the KA.

It is a bit Honda-ish to argue about 6whp, but we can honestly say that the SR20 owns the KA on its home turf -- natural aspiration! Right?!!

Not necessarily.

FWD (ie Grassroots Sentra) has less drivetrain loss than RWD. So if your (S14DB) figures are correct, a RWD SR20DE with I/H/E will most likely make the same or slightly more/less power than a KA with the same mods...

I think we need a dyno run... or better yet, 1/4 mile times!

PS My Sentra SE-R has been in the garage for 3 weeks now (replacing: BMC, axles, H20 pump, etc) -- I'm jones-ing for the SR20DE!

[nissantuner22]

While a lot of parts transfer over, I'm going to have to make a custom header for it. That damn steering column owns exhaust.

[SoSideways]

That thing rocked my socks off last night.

I went to open the throttle real quick to see how the throttle response was compared to most KAs or SR-DETs, and OMG, it was amazing.

That alone has me sold on the SR20DE. Now the hunt for S15 Autech motor begins... muahahahahaha!!

[nissantuner22]

HAHA, there was one for sale a while back. guy wanted 4000 for it. WOOOOOOO

Keep it, it would be cheaper to get a VE head... know what i mean?

I know you love that eager to revness sosideways

[S14zenkiQ's]

Originally Posted by nissantuner22

While a lot of parts transfer over, I'm going to have to make a custom header for it. That damn steering column owns exhaust.

I've heard that KA headers work with slight modifications to the flange, I dont know for sure, but it's worth a shot.

[nissantuner22]

yes I'ved heard the same thing. Cutting the flange, and getting it to match up with the ports on the SR.

[BigVinnie]

Not trying to rip you, but your claims really are biased with no significant fact (dyno result's).

Originally Posted by sciamop

Mike Kojima claims that Hotshot headers are good for 9whp.

Beyond any "claims" the DC sports header for KA makes that much (actually 8.2WHP) plus alot of torque with an actual dyno result. The collector size of the DC sports is 2,1/8", the hot shot for the sr actually breaths better with a 2,1/2" collector....So whats your point? KA still made more power with a SMALLER collector, and still made more torque, and achieved more power earlier in the power band.......
Now members in NICO and Fresh Alloy as well as JWT have claimed almost 10WHP using the the HOT SHOT header same collector size used on the SR, but supposedly there is the claim that the Hot shot dyno dips in the midrange significantly, unlike the DC sports...... If you can come up with a dyno of the HOT SHOT for the SR I would be interested to see the results.....

Originally Posted by sciamop

How's the gas mileage on the SR20DE?

KA will get better gas mileage due to the fact that it runs smog emissions (egr/BPT), it actually decreases fuel dumping. The KA also makes more power in it's stroke at lower RPM. Both the SR, and the KA use the same werner synchros system for there transmissions. Shifting between 2500RPM and 3000RPM the KA will make more power earlier, also allowing for earlier shift points than the sr.
The majority of fuel conservation deals with when you shift, you can drag the RPM's out on either the KA or SR and get extremely bad gas mileage.

Originally Posted by sciamop

Grassroots Motorsports magazine just did bolt-on upgrades for their 91 Sentra SE-R project car: intake, exhaust, timing advance and new fuel filter = 134hp at the wheels (113hp originally). If you can get the S13 down to B13 weight (2400lbs), it should be a good combination. The SR20DE is a rewarding engine when pushed hard (6500-7000 RPM); the KA is a rewarding engine when not pushed hard (2000 - 3500 RPM).

Still there is a big difference between FF and FR. FR degredation loss is relatively 15%, degredation loss is relatively 10% for FF. Comparing any type of dyno results claiming that the SR makes more power than KA is ludacriss, there is no comparisson. What you should do is compare a SOHC ALTIMA, or Stanza KA, to the Sentra SE-R sr20de.
I think alot of the Altima, and stanza guy's would laugh at those results for the se-r, (those KA guy's are SOHC)LOL.

Originally Posted by sciamop

I think this swap would be a lot more popular if the importers would sell them for cheap (under $500). Due to the B13/Classic, the NA SR has a decent aftermarket, so the parts are already there to make it a hit in the S13 world...

NO!!!!!! The swap will never be popular cheap or not. The only thing that makes the SR popular is having a turbo and the potential to boost with a good amount of high rev. The fact is it is still illegal for street use weither you think it's cool or not. NA SR fails by a large significant margin when it comes to making relatively good power.

Just for a refrence. Here is a KA with stock fram filter,JWT tune, header, and CAT back exhaust.NO other modifications. 40WHP gain!!!!!
I don't see an NA SR pullying those kind of numbers with a tune and basic bolt on's.

[Cashizslick]

The swap will never be popular cheap or not. The only thing that makes the SR popular is having a turbo and the potential to boost with a good amount of high rev. The fact is it is still illegal for street use weither you think it's cool or not. NA SR fails by a large significant margin when it comes to making relatively good power.

Not to bash the thread starter on his motor choice, but aside from being "original" this is a pretty pointless swap. . . . there is no point in swapping a motor that decreases your displacement that much (edit; a non-boosted motor).

Its a cool swap because its rare . . .thats about it. Im glad u got it running and that you like it.

[big-jg]

one like high raving light weight fun the other like lots of low end toque... SR20DE and KA24DE are almost the same when stock, performance wise. KA24DE has about 20 more toque at a much lower RPM.. but SR20DE is over all a much rav happy and lighter engine.. lighter the car the less toque it need to go as fast.. that's why 200SX or SE-R is faster then 240SX.. MY P10 G20 is actually faster then My auto 240SX (KA24E tho) even with a much heavier body then the 240sx. and i don't know about the FR SR's My FF SR has all the EGR/BET and it gets 28 in city and 35 on high way.
the KA and SR’s block is about the same, strength wise, They all can support up to about 400 hp stock. so KA is not any stronger then SR … as for this swap.. What he did is renew his car. is not that easy to get a KA in good condition, With that engine, that car can possibly last another 100k + miles. And the fact of having a different 240SX then every one else’s is something extra. And the sound of high raving NA engine . in the morning.. god I love it.. .. now with my KA24E dead.. SR20DE here I come lol… (no money for DET)
Question:
1) how hard is it to do a AT to MT swap.. I need to change the entire drive shaft for the MT right??
2) and what is the different between a KA24e wiring harness and a DE one??
3) And how much would it cost to take it to a shop?? I live in apartment.. for all of you lucky people who has a garage/yard.. lol

[S14DB]

Originally Posted by big-jg

Question:
1) how hard is it to do a AT to MT swap.. I need to change the entire drive shaft for the MT right??
2) and what is the different between a KA24e wiring harness and a DE one??
3) And how much would it cost to take it to a shop?? I live in apartment.. for all of you lucky people who has a garage/yard.. lol

Why don't you search instead of changing subjects? Didn't you see the other user get yelled at for that in this thread?

[big-jg]

the thread is about how to swap a SR20DE in to a S13 body.. not which engine is better.. i'm just trying to change it back... u need to chill.. the thread need to change subject anyway ...............

[nissantuner22]

It all comes down to personal preference guys. As much fun as it is to sit and debate which engine is better, how bout we leave that to people who actually DO the swaps, and DO the mods. This is the last post for this thread, hopefully those who are interested in the swap learned something.

As for how FAST my car is compared to a KA motor, I didn't lose anything. I did however gain response, RPM's, and piece of mind knowing the motor i swapped in is low miles, and will last me for many many years. I'm not putting down 200WHP N/A, and im not turbo...so I guess this swap isn't regarded as JDM tyte for you guys. I apologize for not being just another SR20DET swap in the vast sea of nissans. If anyone has any questions regarding the swap, PM me, I'll try to help as best I can.

Too many keyboard drifters and haters ruining a perfectly good technical thread.

[delphis]

Originally Posted by nissantuner22

89 maxima clutch and pressure plate work, you must use a 90 throw out bearing from a 240.


O Kazuo, its easier because of the wiring, its literally plug and play. That and you dont have to cut out part of your fender for the SMIC.


Heres some pics, hopefully by the end of today it will look almost like an engine.

You know you can use an entire clutch kit from a det, you just have to replace the flywheel with on from a det and you will be good to go.

[drftwerks]

awesome search but i think he BETTER BE DONE WITH THE SWAP BY NOW

[SoSideways]

Originally Posted by delphis

You know you can use an entire clutch kit from a det, you just have to replace the flywheel with on from a det and you will be good to go.

Originally Posted by drftwerks

awesome search but i think he BETTER BE DONE WITH THE SWAP BY NOW

He has. He was driving around like a week after the posts he made about the swap.

He drove the car to my house like a week after that post where he pointed out all the stuff I did to his harness, and I even got a ride in the car with him.

delphis - way to go digging up an old thread to give the guy a tip 3 years after the fact.

[zaquanh]

anyone have info on S14 wiring for a DE motor in s13 ?

can KA harness be used on the s14 ?

[Ramonesfreak2010]

Did you really just bump a 7 year old thread?

[omgRWDgoodness!]

Look at the join date, tho...

[Kr883p]

i know its years later but im doing a sr20de to my s14 im just trying to figure the wiring situation any tips or advice

[1on1]

Originally Posted by Kr883p

i know its years later but im doing a sr20de to my s14 im just trying to figure the wiring situation any tips or advice

http://bfy.tw/CmMI

Research the rest for the s14.

[TheRealSy90]

People get mad when other people don't search and start new threads.
Same people get made when other people bump old threads that are relevant to what they are asking/interested in...

[Tempo]

Originally Posted by TheRealSy90

People get mad when other people don't search and start new threads.
Same people get made when other people bump old threads that are relevant to what they are asking/interested in...

preacher right here. Seriously, no one wants to answer or entertain a genuine question on the forums anymore, the only flourishing threads nowadays are the shit ones like doing it wrong and random picture reader threads >__>