SR vs SR vs SR vs KA-T vs CA

[s13]

Well, SoSideways has already helped me out a bunch on info about these engines but if anyone could, post pros, cons, and facts to all of these engines and which you would pick and/or have in your vehicle to give feedback on them:

s13 SR20DET Red Top

s13 SR20DET Black Top

s14/s15 SR20DET Black Top

KA24DE-T

CA18DET

Thanks

[Nachtmensch]

heres a useful thread

extracting power out of a ka24de (come on nissan people)


it all comes down to pref. though. i myself like the s13 SR (black or red, doesnt matter) because of the huge support for the SR. (although the KA support is growing)

[Juanit0]

SR
look in this site, some good information!

http://forums.nicoclub.com/zeroforum?id=138

[s13]

Oh tight, thanks guys!

[s13]

Originally Posted by Nachtmensch

it all comes down to pref. though. i myself like the s13 SR (black or red, doesnt matter) because of the huge support for the SR. (although the KA support is growing)

Oh alright, well I've heard s14 can build up more power with less mods or something along those lines, and so s13 black top just has VVT oppose to the red top? or what's the difference there

[Nachtmensch]

Originally Posted by s13

Oh alright, well I've heard s14 can build up more power with less mods or something along those lines, and so s13 black top just has VVT oppose to the red top? or what's the difference there

-S13 redtop is the same as the blacktop spec wise. the blacktop is just a newer motor. so less miles, blah blah blah.
-s14 has VTC and a ball bearing t25 turbo over the s13's journal bearing t25
-s15 has a ball bearing t28 turbo. i wouldnt waste your money on an s15 motor.

if you plan to upgrade cams, theres no need for VTC. so thats why id choose the S13 blacktop.

CA18 sucks for lack of parts and you lose 600cc. fuck that.

i like high revving motors, thus no KA with its bad bore to stroke ratio. SR is a square ratio (86.0mm x 86.0mm) much easier and reliable revving.

[greenkouki]

whatever you plan to do, if you want to swap in a new motor definitely do a mild build or atleast rebuild. i would never trust a motor that could have been sitting in a japanese scrapyard for 5 years. I say do a compression and leakdown on your ka and consider doing a moderate ka-t setup that will get you about 220-250hp. if you are dead set on a swap, you might as well buy a wrecked camaro and take the ls1 out of it, best bang for the buck IMO and definitely reliable at 400hp.

[greenkouki]

Originally Posted by Nachtmensch

-s14 has VTC and a ball bearing t25 turbo over the s13's journal bearing t25

the s14 sr actually has a journal bearing t28 with a smaller compressor housing than the s15 bb turbocharger

[SoSideways]

Originally Posted by Nachtmensch

-S13 redtop is the same as the blacktop spec wise. the blacktop is just a newer motor. so less miles, blah blah blah.
-s14 has VTC and a ball bearing t25 turbo over the s13's journal bearing t25
-s15 has a ball bearing t28 turbo. i wouldnt waste your money on an s15 motor.

if you plan to upgrade cams, theres no need for VTC. so thats why id choose the S13 blacktop.

CA18 sucks for lack of parts and you lose 600cc. fuck that.

i like high revving motors, thus no KA with its bad bore to stroke ratio. SR is a square ratio (86.0mm x 86.0mm) much easier and reliable revving.

Dude, come on. I thought you knew what you were talking about.

1) S14 engines have T28s as well, albeit very very similar to the S15 units, they are not identical. The S14 unit uses a turbine wheel made from a different material from the S15 unit, and the S14 turbine housing doesn't have the divider cast in like the S15 unit. The S15 turbo is slightly more efficient and newer, thus resulting in slightly better results than S14 turbos, when talking about putting them on S13 engines.

2) VVT is always good for engines, why else do you think they were invented? HKS, Tomei, and I think Toda all have cams that are compatible with VVT. The Nissan VVT system on the S14 SR actuates at 1050rpm, and it stays on until 5700rpm, then it switches off and relies on the cams original timing to achieve a wide powerband that also aids in turbo spool. Why do you think most Japanese drifters all switch over to the S14/S15 motors into their S13s if they can afford it?

3) You cannot just look at bore/stroke ratio to determine if an engine can rev or not. Because if that's all that is involved, then the B18C engines shouldn't be revving to 8000+ rpm due to "bad bore/stroke" ratio either.

[SoSideways]

Touche, I guess greenkouki will handle business here when I'm not around from now on

[passes torch on to greenkouki]

[SoSideways]

Originally Posted by greenkouki

the s14 sr actually has a journal bearing t28 with a smaller compressor housing than the s15 bb turbocharger

If my friend was correct about the turbos that he bought being S14 units, and not just Garrett GT28R turbos, then I definitely heard the ball bearings in the turbo spinning on an S14 turbo, which would make them ball bearing turbos.

I know cause I've held that turbo in my hand, and spun the wheel by hand, and heard it.

Sounds the same as my HKS GT2530 turbo's ball bearing center cartridge.

[Nachtmensch]

Originally Posted by SoSideways

Touche, I guess greenkouki will handle business here when I'm not around from now on

[passes torch on to greenkouki]

ok so you win

i dont remember as well as i thought. i guess ill go back and read up.

[Sfljdmej2]

ca18det all day, its been my fav motor for the past 4-5 years,i know it lacks power and parts support but i dont care i still love it

[SFlaB13SER]

Id go with the S15 blacktop. More power less miles and 6 speed tranny

[Nachtmensch]

Originally Posted by SFlaB13SER

Id go with the S15 blacktop. More power less miles and 6 speed tranny

a weaker 6 speed thats PITA to make work seeing as the s14/s14 speed sensors are in the trans while the s15's is in the diff. 5 speed > 6 speed in this case