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 Difference Between Sr20 And Ca18?  

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NaT
  • NaT
  • Another Proud Member of NewlyAwakeN's School of Modern Dance
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  • Joined: 25-October 03
  • Posts: 102
  • From: Perth, WA
Post #1 post 29th October 2003 - 04:25 AM
At the risk of sounding like a noob, could someone please explain the differences between the SR20 and CA18 engines?

Thanks
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RTR
Post #2

oh about 200ml of displacement ... wink.gif

umm sr20 newer , all alloy block
more torque, just better engine !

punksnut
Post #3

QUOTE (RTR @ Oct 29 2003, 10:26 PM)
oh about 200ml of displacement ... wink.gif

umm sr20 newer , all alloy block
more torque, just better engine !

here here biggrin.gif thumbsup.gif

Amokk
Post #4

they actually arn't a better engine.. the ca is a better design.. but its just older.

so don't knock ca's

i seen many ca's spank lots of sr's

***and warning if this turns into a shit fight i will use my powers***

Hawk
Post #5

The main diff apart from the 200ml diff is the PRICE biggrin.gif

They both can be made to go hell hard.
They are both quite good engines.
They are both reilable setups.

The sr20 is newer and still in use and for obvious reasons you would have to wonder why a billion dollar company ditched the ca for the sr if it is not better ????? Anyway the ca is ridiculously cheaper and will go just as hard with the same money spent on mods.


It's all just money thumbsup.gif

TRacerD
Post #6

sr20 2.0l
ca18 1.8l

sorry. had to state the obvious wink.gif

FREESTYLER
Post #7

what they said
good nissan engineering
there is also a CA18 twin spark (or is that the ZA18)
b j p
Post #8

CA18 is a better engine, but due to sheer capacity you will be able to get more power from an SR.

CHA53
Post #9

you boys know your stuff, good to see. The CA is a cheaper engine, but it, like the Sr20 has plenty of potential..they are a great little motor, problem is they do need a bit of work cos they are the older of the two, most of them will need a re-con and/or further work to ensure longer life.

NiSlo
Post #10

QUOTE (FREESTYLER @ Oct 30 2003, 08:15 AM)
there is also a CA18 twin spark (or is that the ZA18)

Some of the ca's do have the twin spark thing. My ca20e has it, which btw i'm seeking a rebuild for thumbsup.gif

Moi
Post #11

Give me an ol' school FJ20 pwease? thumbsup.gif but yeh CAs are tough, how bout a CA20?! Friends CA18DET was built erperimentally using CA20 non turbo pistons. Any little bit of extra capacity helps smile.gif Seems to go well with a T03 off VL turbo, management yadadadada etc rolleyes.gif And due to the difference in price between CA and SR you could spend a little bit extra on the CA to make it a killer!

180GO
Post #12

There's a difference?

b j p
Post #13

Yes, IMHO FJ does slay them both..

OFI10
Post #14

always gonna be big shit fight arguments over which is the superior engine

for aftermarket support and off the shelf potential, the SR is better. nice torqeuy little engine... prefer an SR but the CA isnt that much of a 2nd place... stock to stock the SR towers, but when both modded the differences are minimal (especially when u factor into accountt he extra money saved in buyin the CA and spent on mods)

CA's have a worse rap than they deserve. need a long post to tell you all the differences between the two engines, but as basically said before, main difference is the SR is newer and a 2.0L as opposed to 1.8. SR comes with slightly better turbo stock too. t25G as opposed to t25 on the ca

180GO
Post #15

Go the L20!!

hi_lux
Post #16

a stock SR is close to its bore limit, however u can bore a CA out to over 2.1L. therefore witha lil money spent a CA will whoop an SR

FREESTYLER
Post #17

180GO

QUOTE
Go the L20!!

hahah u said it mate
good old L20B's twin 45mm Webbers
"Welcome 2 my world"
im runnning the L20 in my datsun
but yeah, throw me a FJ anyday over the SR/CA/ZA
SR20 is a newer engine looks nice good power
FJ20 is an old Soild hunk of unbreakable metal than will push 500KW happily

FJ20 is like old school muscle, while SR20 is like newschool technology
my $18.95 worth

s13viper
Post #18

there are quite a few difrerences, which would take me all day to say

in the end tho, id take either! but the fact that the CA turbo was a good 3,000 cheaper to buy made my desicion, those 3000 in mods would spank the SR.

still both awesome nissan feats of engineering! biggrin.gif

andrew180sx
Post #19

to give you guys an example... my 180sx friends
1 - SR20det blacktop with 14psi boost through standard intercooler, 3 inch zorst and a pod filter. Standard Turbo.
2 - CA18det chipped with a VF22 Ball Bearing STI turbo blowing through a large FMIC with a 3 inch exhaust and pod filter running 16 psi boost.
These cars raced (on the racetrack wink wink) all the way through 2nd, 3rd and 4th gears and the CA ended up pulling just 1 car length on the SR. The SR 180 had 2 ppl and the CA had just the driver.
In my opinion the SR20 is the better of the two engines in terms of sound, power delivery, bolt on upgrades, standard strength and durability however a Turbo CA18det 5spd 180sx can be bought for 8 grand these days!!! This is far cheaper than an SR powerd 180.
I believe the heads in the CA are of a better design however SR heads actually flow more...

andrew180sx
Post #20

QUOTE (s13viper @ Oct 30 2003, 12:33 AM)
there are quite a few difrerences, which would take me all day to say

in the end tho, id take either! but the fact that the CA turbo was a good 3,000 cheaper to buy made my desicion, those 3000 in mods would spank the SR.

still both awesome nissan feats of engineering! biggrin.gif

not with an auto trans mate

Moi
Post #21

CAs have forgies yes... after they have been built with them biggrin.gif But no, no forgies stock in them im afraid. Unless you know of one that comes stock with forgies, in which case I would like to know what you know that I dont know, so that I will know what you already know blink.gif

Amokk
Post #22

[QUOTE]hi_lux Posted on Oct 30 2003, 10:21 AM
a stock SR is close to its bore limit, however u can bore a CA out to over 2.1L. therefore witha lil money spent a CA will whoop an SR

that is completely wrong.. infact its the other way around

neil_se
Post #23

they may be termed "forged pistons" but the sr ones will support a lot more power before they shit themselves.

TurbostyleR
Post #24

SR20's are a 2L 4 cylinder engine
CA18's are a 1.8L 4 cylinder engine

I beleive thats the simplest difference between them...

As for this CA v.s. SR i dont know which is the better one...

All i know is that the CA does have a cast Iron block whereas the SR has some kind of an alloy...

However there are a couple of SR20's in oz which are running around with 300kw at the treads with stock internals....

But RPM in south australia have built up one MEAN 180SX which is a CA18...

Personally i own an SR20 and have to say that they are a smooth engine compared to a CA18, however the CA18 is a much more lively and more exciting engine to drive...

They also sound different, the SR20 sounds a lot deaper and crisper, as the CA is more barkier...if that made any sense... unsure.gif

hi_lux
Post #25

QUOTE (Amokk @ Oct 30 2003, 11:31 AM)
[QUOTE]hi_lux Posted on Oct 30 2003, 10:21 AM
a stock SR is close to its bore limit, however u can bore a CA out to over 2.1L. therefore witha lil money spent a CA will whoop an SR

that is completely wrong.. infact its the other way around

tongue.gif wanna bet

hi_lux
Post #26

if u collect hot 4's have a look back thru them to denzo's sil80 project drifter. the ca18 was used tot he reason i stated above wink.gif thumbsup.gif

Barely Legal Customs
Post #27

ok now wots the difference between a red top and a black top...? sorry for my ignorance

hi_lux
Post #28

black top has variable valve timing

OFI10
Post #29

QUOTE (hi_lux @ Oct 30 2003, 02:08 PM)
black top has variable valve timing

depends on whether you are tlaking about a blacktop out of a 180/silvia or one out of a 200sx

i think 94 onwards they made blacktop sr20's in s13's but they didnt have VVT

someone correct me if im wrong

and also, hate to be the gimp to say it, but suprised it hasnt been said already --- SEARCH button is goooooooood. this topic been covered A LOT

neil_se
Post #30

not s13 blacktops, only s14 and s15 blacktops. there's effectively no difference in blacktops fitted to silvias and 180sxs.

hi_lux
Post #31

QUOTE (krazyfilo @ Oct 30 2003, 02:12 PM)
depends on whether you are tlaking about a blacktop out of a 180/silvia or one out of a 200sx

i think 94 onwards they made blacktop sr20's in s13's but they didnt have VVT

someone correct me if im wrong

and also, hate to be the gimp to say it, but suprised it hasnt been said already --- SEARCH button is goooooooood. this topic been covered A LOT

your probably right dude, but i was under the influence that all blacktop sr20's were VVT. i know for sure the 180' blacktops are VVT, not sure bout silvias.

Barely Legal Customs
Post #32

ok thanks

hi_lux
Post #33

QUOTE (neil_se @ Oct 30 2003, 02:13 PM)
not s13 blacktops, only s14 and s15 blacktops. there's effectively no difference in blacktops fitted to silvias and 180sxs.

my mate used to have a 180 with a VVT black top huh.gif

neil_se
Post #34

what year was it? maybe the type-xs had vvt but i didn't think they did. certainly nothing before that had vvt from factory.

hi_lux
Post #35

i dunno dude, the only reason i remeber it was VVT was cause the importer did a song and dance cause it was 1 of 3 at the time, VVT 180's in aus. im talking a few years back now.

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