SR20De vs SR20DE


thaa
05-22-2001, 01:47 PM
does anyone here know the mechanical differences between the SR20De and the SR20DE in the primeras? not hp, torque and so on... but what makes it a De or DE?? (everybody with me here??)

I've got the De and want to know how to make it a DE... to speed it up a bit:D

kris
05-22-2001, 02:05 PM
um, as far as I know, making it a capitol E does nothing. But the primera motots have 10:1 compression, stainless exhaust manifold, intake manifold is a bit different too, and I believe a little better cams.

thaa
05-22-2001, 02:41 PM
Originally posted by Kris94G20
...But the primera motots have 10:1 compression, stainless exhaust manifold, intake manifold is a bit different too, and I believe a little better cams.


it's like this:

the primera up to '96 you could buy with either the De-engine with 125hp or the DE (GT) with 150hp. the '97s to '99s you could get with either De, 130hp, and DE (GT), 150hp.

the new model only comes with one of the 2-liters, with 140hp (like the US g20?).

now, anyone with the proper knowlegde of the differences?? (of the p10 engines..)

DVSNCYNIKL
05-22-2001, 03:03 PM
http://www.sr20de.net/about/g20/index.html

About the only thing I could find apart from that link up there was that the engine you speak of with the lowercase "e" is in the Sentra. So it just might be a smaller, base model engine for the G20. Hope that helps.

i_rebel
05-22-2001, 03:44 PM
I don't know where you're getting you're info . . . maybe you could share some of your sources to get the rest of us up to speed.

I believe you're off . . . incorrect, that is . . . but I've been wrong before.

Anyway, the Nissan powerplant designated SR20DE, is a 2 liter engine regardless of what you may think the output is . . .

Actually, an engine rated @140hp, like the SR20DE will put out approximately 125hp to the wheels . . .

Maybe your referencing Sweden specific models ????

thaa
05-22-2001, 04:56 PM
sorry!! forgot one line in my two first posts:

I'm talking about the european modells, (all I think)...

now that should make things more clear now, shouldn't it?

thaa
05-22-2001, 04:58 PM
In know my car has the SR20De as it says so in the manual...

It's the SR20DE with less power... but again: whats the differences??

DVSNCYNIKL
05-22-2001, 09:29 PM
Originally posted by i_rebel
I don't know where you're getting you're info . . . maybe you could share some of your sources to get the rest of us up to speed.

I believe you're off . . . incorrect, that is . . . but I've been wrong before.

Anyway, the Nissan powerplant designated SR20DE, is a 2 liter engine regardless of what you may think the output is . . .

Actually, an engine rated @140hp, like the SR20DE will put out approximately 125hp to the wheels . . .

Maybe your referencing Sweden specific models ????

How about asking before saying that I'm wrong. I am only doing searches over the net for the information. The only things that were coming up were that. So unless you have something specific, you should check your sources. I didn't say that those were the exact specs, I said the only thing I came up with. :rolleyes:

Come on people, reeaaaddd!!!!!!

ales
05-22-2001, 10:18 PM
I agree with thaa here - there were different SR20-s available in Yurp - SR20De, SR20DE, and SR20Di. The power output is 125, 150, & 115 hp respectively. My guess would be there were differences in cams between De and DE, but that's just a guess. I've seen the two engines mentioned in my service manual, butI did not pay much attention (will take another look as soon as I get my hands on it - it's not at my home). Thaa, I would suggest going to your local Nissan dealer and asking: I would think they are more cooperative than the dealers here. Or you can compare the part numbers for cams for the two engines.
Hey, how come no one answered my question at SR20DE vs SR20Di? :(

b-b00gie
05-22-2001, 11:00 PM
not sure whether there is a valid difference between a "De" and "DE"

but based on Nissan's engine codes... an SR20DE is an "SR" family engine which is 2.0L which is where the "20" comes from. the "D" stands for dual over head cams, and the capital "E" stands for multiport fuel injection.

the SR20Di stands for SR family 2.0 Dual overhead cam with throttle body injection which is a lower case "i"


still.. i cant find the meaning a lower case "e" for the fuel delivery field... maybe since the capital "E" is a multi port... the lower case "e" is a single port fuel injection? ...this is just a speculation.. dont know if such a thing could or does exist....


anyhow.. if there actually is a difference.. the "e" DOES mean a fuel delivery difference as nissan engines follow this designation..

[engine family][size][valve train][fuel delivery][turbo]

the turbo and fuel delivery are not always present.. if there is no turbo field then there is no turbo.. duh! and if the fuel delivery field is not present it means the engine has a carborator

Kenny-G
05-23-2001, 12:42 AM
Ok...E stands for MPFI, i stands for TBI, then e stands for....
carburator?

ales
05-23-2001, 02:21 AM
No SR engines have been *ever* equipped with carburettors. It is more easy to mistake TBI for a carburettor (you should have seen my face in the first two weeks after buying the car - I was sure I got deceived). I stand by my guess that the difference is in more agresive cams (what else can it be if we consider that both engines have multi-point injection!!!). Try the Nissan dealership - they may know the answers.

ales
05-23-2001, 02:25 AM
http://web.ukonline.co.uk/kinega/nissan/SR.htm

see this link. no conclusive information, but still...

b-b00gie
05-23-2001, 05:24 AM
hmm... do people not like to read? i'm not forcing you to listen to me, but please at least READ what i said...

i just explained how nissan engine codes work.... an "e" cannot mean carborator... a nissan engine w/o a fuel delivery "letter" would be one equipped w/ a carb...

for example lets make up our own "XY" family of engines which has 2.2 Liters... and lets say its dual overhead cam.. with multi port fuel injection...

the engine would be called XY22DE

if it had a carborator... it would be called XY22D


...still not sure if lower case "e" means anything different than an "E" in the "fuel delievery" field of the engine name but if it does.... IT HAS SOMETHING TO DO WITH THE FUEL DELIVERY BECAUSE OF ITS PLACE VALUE IN THE ENGINE CODE....

thaa
05-23-2001, 08:57 AM
lots of input here...


the lower e in the SR20De still stands for multipoint injection, but as the power is only 125hp against 150hp (the european GT), there have to be some mechanical differences between them.. now, is it the cams, compression ratio, the ECU or everything??

guess I gonna have to speak to my nissan-dealer and see what he says... also, I will post his answer here to straighten things out a bit...

i_rebel
05-23-2001, 10:58 AM
Okay . . . B-Boogie is absolutely on point . . .

DVS . . . my reply was to thaa not to you . . . stop bein' touchy . . .

I haven't found specifics on the internals of the engines . . . but here's something to read in the meantime:


The SR engine range:

-4 cylinder inline

-DOHC

-4 valves per cylinder

-Chain driven camshafts

-2000cc and 2000cc intercooled turbo

-ECCS engine management

Used in :

Almera GTI
Primera P10
Primera P11
Primera P11 144 series
Serena
200sx
Sunny N14

This engine first appeared in the Primera in 1990.
There have been several variants, depending on the fuel system.


-SR20Di Single Point Injection, used in early Primeras.
-SR20DE Multi Point Injection, used in Primera GT's, Sunny GT's and Almera GTI's.
-SR20De Multi Point Injection, used in ordinary Primeras and Serenas
-SR20DET Multi Point Injection with Turbocharger, used in 200sx and Sunny GTI-R

In addition, the injection system on early Primera GT's is totally different to later models, but both are classed as SR20DE.

I'll be back with more . . .

DVSNCYNIKL
05-23-2001, 11:08 AM
Originally posted by i_rebel

DVS . . . my reply was to thaa not to you . . . stop bein' touchy . . .




My apologies.:D

ales
05-23-2001, 11:21 AM
Originally posted by i_rebel
...

Duh!!! Thanks for copy/pasting the information I had provided already in the form of a link a couple of messages ago.

I suggest we just wait for thaa to tell what the Nissan dealer has to say. Oh, and I already emailed the guy who runs the Nissan Information centre - it's not a good idea to start spamming his mailbox

i_rebel
05-23-2001, 11:42 AM
oh schitt . . . lol . . . I didn't realize . . .

pulled that info after doing a search at "google" . . .

ales
05-27-2001, 07:07 AM
OK. Here goes: the guy who runs the "Nissan Information Centre" website emailed me back and I quote: "Cams are different. Other major changes were manifolds." (obviously, together with the fuel feed system).

CU

P10DET
06-05-2001, 09:53 PM
It is my understanding that the SR20De is the throttle body injected car. Let me check my Nismo (Japan) catalog to see what I can find out (I can't read kanji) and my Hyper Rev Primera book.

George Roffe
Best G20, 2001 SE-R national convention

b-b00gie
06-05-2001, 10:04 PM
noooope... :)

lower case "i" stands for throttle body in Nissan engine codes... so if it was SR20Di ...then it would be throttle body :D

P10DET
06-05-2001, 10:27 PM
Welp, I was wrong. The Di is indeed the TB injected version. I could not find anything in either of my references on the De. I know it exists, but it apparently wasn't sold in Japan in a Primera.

Geo

peanutpope
02-21-2008, 10:02 AM
In Europe:

SR20Di 116ps - (1990-1993) TBI, intake cam set for more torque at lower RPM
SR20DE - MultiPoint fuel injection, comes in two versions:
High-port 143 ps (1990-1995)
Low-port 150ps (1996-)
the difference being that the high-port has a stronger lower end of the engine and the throttle body is beneath the injectors, whereas the low-port version has its throttle body above the injectors.

SR20De 125 ps (1993-1996)/130 ps (1996-) - different from SR20DE at the cams, ECU and exhaust manifold. (all slightly less aggressive)

I hope this explains it...

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