JDM sr20det Vs USDM sr20de ( what parts swap )

[Sreds13]

I've built my sr20det more and more over the past few years and I always pick up parts from the auto shops sold for the USDM Se-R sr20de. Gaskets, fittings, bolts, plugs, what ever we know was exactly the same between the two motors. I have always want to have a full list of what parts I can pick up at a local dealer and which parts had to come from the shores of Japan.

I have two sr20det's in my shop and now I have a Se-R that has the usdm ( not a blue bird ) sr20de that some hack mechanic slapped a t25 and other turbo bolt-ons on to it. Between all of the oem parts and upgrade parts laying around I would really like to figure out what exactly I can swap between the two motors.
Hope some one out there can help.

Thanks
Gallo
SiP

[Bigalow311]

isn't the usdm sr20 FWD? I'm not sure what you can swap out. check the sr20 site sr20forum.com

[Team DET]

look in here http://zilvia.net/f/engine-tech/62607-sr20det-faq.html

[Sreds13]

Originally Posted by Bigalow311

isn't the usdm sr20 FWD? I'm not sure what you can swap out. check the sr20 site sr20forum.com

YES! the usdm sr is a FWD motor hint's why it is in a Nissan Sentra SeR. I'm looking for info that can be provided. I know that my SR20det ( JDM ), and yes it's RWD, can have parts bought from local parts stores, I source them as early 90's SeR parts.

So what I was looking for is a write up of what others have used to interchange between the two motors. I just am wanting to see what others have applied to their motors.

Here's an example I bought Thrust Bearing for my SR20det (RWD) from an online source. But I also could have bought Thrust Bearings from my local Nisan Dealership for 10 dollars cheaper had I known whether or not the SeR Thrust bearings were the same...

Get the Idea??? This Ideally is a thread for those to save some change by ordering USDM parts to fit their JDM motors and also for those with a USDM Sr motor to be able to buy parts from us JDM guys.

Thanks
Gallo

[Slidin' Sam]

I can't speak for fwd sr20de, but as far as rwd sr20de, almost everything will swap except for the oil pump I believe. Some things are small upgrades and some are not. I striped a sr20de that I used to have for spare parts (p/s pump, water pump, belts, etc)

[Wookie384]

Originally Posted by Slidin' Sam

I can't speak for fwd sr20de, but as far as rwd sr20de, almost everything will swap except for the oil pump I believe. Some things are small upgrades and some are not. I striped a sr20de that I used to have for spare parts (p/s pump, water pump, belts, etc)

Intresting, what is it about the oil pumps being different (RWD: SR20DE vs. SR20DET) that you have heard?

I recently picked up an SR20DE (RWD: NA) for my S13, and I'm currently researching the differences, so this thread could be helpful.

What I do know is: (all my info pertains to the RWD platform unless otherwise stated)
- That they're pretty much the same as far as maintenance parts go; gaskets, seals etc.
- DET valvetrain upgrades do fit DE motors.
- I've heard conflicting stories that the DE and DET valve cover gaskets/grommets are different, I can neither confirm or deny this at the moment. The valve covers themselves are different slightly, You cant install the DET coilpack cover onto a DE cover.


There's a lot more that I could list but I'm a bit lazy...

[jzepol1985]

Originally Posted by Team DET

look in here http://zilvia.net/f/engine-tech/62607-sr20det-faq.html

Looking here ^^^^^ will get you this

Originally Posted by kazuo

Explain. I don't get what you mean by that.

REPLACEMENT PARTS (S13 SR20DET RED/BLACK TOP ONLY, UNLESS NOTED):
Oil filter (S13 SR20DET)
15208-53J00
91-94 Sentra SE-R

(S14SR20DET)
95 Sentra SE-R

Fuel Filter
16400-00002
1990-1996 300ZX TT

Upper injector o-ring
16618-53J00
7/95 and newer 300ZX TT (small/upper)

Lower injector o-ring
16618-10V05
7/95 and newer 300ZX TT (big/lower)

o2 sensor
S13 SR20DET REDTOP: 22690-19P20 ('87 280ZX)
S13 SR20DET BLACKTOP: 95 300ZX TT

Exhaust Manifold Gasket
91-94 Sentra SE-R

4 Hole Turbo Manifold gasket / 5 Hole Turbo Extension Gasket
91-96 300ZX TT (Z32)

Fuel Injectors
91-96 Z32 300ZX TT (purple plugs; 370cc)

MAF
89-90 240SX

Timing Chain Kit
91 B13 Sentra SE-R

Belts (PS, AC, alt)
Gates K050370 Alt.
K040345 PS & most AC

Spark Plugs
91 Sentra SE-R

Water Pump
JDM SR20DET Only

Head Gasket
JDM SR20DET Only

IACV Gasket
JDM SR20DET Only

Engine Coolant Temp. Sensor:
'91-94 B13 Sentra SE-R

Throttle Position Sensor:
22620-53J00 ('91-'94 B13 Sentra SE-R)

That's all I can think of.

[Wookie384]

Originally Posted by Team DET

look in here http://zilvia.net/f/engine-tech/62607-sr20det-faq.html

Originally Posted by jzepol1985

Looking here ^^^^^ will get you this

What sucks is that the NA SR20DE's don't have a FAQ... for example that FAQ doesn't tell me what dist. cap and rotor to use on my SR20DE (Silvia Q's RWD version) Having the DE FAQ would help the OP so he could compare what parts are different, and people like me don't have to spend hours searching to come to no conclusion on what cap and rotor to use.

[Bigalow311]

Gallo,

All I said is IDK what you can swap out and maybe you should try the sr20 forums. Don't get mad at me for trying to help you out, asshole.

[Slidin' Sam]

you can swap the valve cover from de to det. I had to do it because when we notched my det valve cover for my ras we nicked it where the gasket goes, so to make sure it wouldn't leak, we just used the de valve cover. only difference, is the de is not drilled for the bolts that hold the coilpacks in, but you don't need them...you can always drill the de valve cover out and tap it so you can use the bolts for the coilpacks. as far as bolts/washers etc for the de valve cover, you can use whatever ones you want...you can even mix them up, its ok.

[S13 curtis]

Originally Posted by Wookie384

Intresting, what is it about the oil pumps being different (RWD: SR20DE vs. SR20DET) that you have heard?

I recently picked up an SR20DE (RWD: NA) for my S13, and I'm currently researching the differences, so this thread could be helpful.

What I do know is: (all my info pertains to the RWD platform unless otherwise stated)
- That they're pretty much the same as far as maintenance parts go; gaskets, seals etc.
- DET valvetrain upgrades do fit DE motors.
- I've heard conflicting stories that the DE and DET valve cover gaskets/grommets are different, I can neither confirm or deny this at the moment. The valve covers themselves are different slightly, You cant install the DET coilpack cover onto a DE cover.


There's a lot more that I could list but I'm a bit lazy...

I have a FWD SR oil pump on my RWD SR, Worked fine but one of the bolts dont match from under the valve cover was no biggie it does the job.

[Benster]

Ok good stuff.
Im personally took out a crankshaft form a fwd to use in my rwd. once i compare and contrast, they are exactly the same. piston are same width but cheaper material, rods are thinner on fwd. oem fwd rings, main bearings, rod bearings fit in rwd.
and for the oil pumps i heard the internal parts are diffrent thats why i didnt use one. I heard it will cause oil stravation on a rwd because of less oil pressure. the cam rods lift a tiny bit higher on the fwd and they fit on rwd thats what im using.

[Wookie384]

Originally Posted by Benster

Ok good stuff.
Im personally took out a crankshaft form a fwd to use in my rwd. once i compare and contrast, they are exactly the same. piston are same width but cheaper material, rods are thinner on fwd. oem fwd rings, main bearings, rod bearings fit in rwd.
and for the oil pumps i heard the internal parts are diffrent thats why i didnt use one. I heard it will cause oil stravation on a rwd because of less oil pressure. the cam rods lift a tiny bit higher on the fwd and they fit on rwd thats what im using.

I would figure the RWD DET oil pump would work on a RWD DE without any oil pressure problems considering the DET has the oil squirters for the pistons and the DE does not. My logic being that the DET oil pump has to move more oil/pressure on the DET and not so much on the DE.

[Sreds13]

Originally Posted by Bigalow311

Gallo,

All I said is IDK what you can swap out and maybe you should try the sr20 forums. Don't get mad at me for trying to help you out, asshole.

Man I'm must apologize I was in a shitty mode with some flakers and issues at the shop. Asshole I was but you did have a funny question lol

[s14slideshow]

So can you use the whole rotating assembly from a SR20de in an SR20det?

[codyace]

Originally Posted by s14slideshow

So can you use the whole rotating assembly from a SR20de in an SR20det?

I'm unsure if the FWD pistons have reliefs cut out for the DET oil squirters. So while they will work just fine (granted FWD rods are weaker), you may not be able to use the pistons because of the squirters.

[s14slideshow]

what if they are aftermarket pistons? Weisco 8.5cr pistons

[s14slideshow]

anyone know before I go 4 hours away to get this stuff?

[Ginjuice]

Sorry about this, so from what I am reading. All parts from USDM SR20DE will fit into a JDM SR20DET. I need bolts for the internal.

[wangan_cruiser]

Im using arp main bolts from sr20de. They work fine

[jkrlox]

Hi

Pretty straight forward question. I am rebuilding my JDM SR20DET (s14) from 1997 and my repair shop has told me to buy the connecting rod bushings.

The part number for my engine is 12030-79E01

but I can't find it anywhere to buy it

My question is, the bushings from the USDM SR20 are compatible?

The part number is 12030-60J02

[ultimateirving]

Originally Posted by jkrlox

Hi

Pretty straight forward question. I am rebuilding my JDM SR20DET (s14) from 1997 and my repair shop has told me to buy the connecting rod bushings.

The part number for my engine is 12030-79E01

but I can't find it anywhere to buy it

My question is, the bushings from the USDM SR20 are compatible?

The part number is 12030-60J02

See if you have any better luck with referring to then as "bearings." I'm not sure if the translation is different but bushings generally are used more as spacers
For other parts

[jkrlox]

Originally Posted by ultimateirving

See if you have any better luck with referring to then as "bearings." I'm not sure if the translation is different but bushings generally are used more as spacers
For other parts

I actually think that's the right term

http://nissan.epc-data.com/silvia/s1...ine/120/12030/

http://parts.nissanusa.com/nissanpar...iption=Keyword

[Sidewayz240']

So someone said the water pump is interchangeable and the other thread says it isn't . Does anyone have any first hand experience with this ?

[Ajoritz]

Me and a buddy recently bought a 240, was making a terrible chattering sound when you decelled. We thought maybe bent rods, but checked compression and held fine. Later we started it again and felt the clutch while revving and what not. Kinda felt like clutch... We ripped the tranny off and started to unbolt the clutch, it wobbled on the flywheel before I could even get the first bolt off. I grabbed the clutch and it pulled right off and the flywheel came with it. Turns out the guy who had previously owned it put grade 5 bolts through the flywheel and into the crank... He ended up ruining the crankshaft and I was wondering if I was to buy a sr20de crankshaft kit, for our sr20det, would it fit right in? Thanks for the info guys! And that would be a U.S. Sr20de crankshaft kit for our imported sr20det.

[brndck]

Originally Posted by Sidewayz240'

So someone said the water pump is interchangeable and the other thread says it isn't . Does anyone have any first hand experience with this ?

fwd water pump is NOT interchangeable with rwd. they're different height.

Originally Posted by Ajoritz

Me and a buddy recently bought a 240, was making a terrible chattering sound when you decelled. We thought maybe bent rods, but checked compression and held fine. Later we started it again and felt the clutch while revving and what not. ......

unless you can confirm via FAST that they're the same part number, i would NOT try running a fwd N/A crank in a rwd turbo engine.