SR20DET notch top or top notch :)

Hi All

Am new here!

Have been doing a bit of reading through most of the threads.....

Have seen that some people are saying they have a SR20DET notch top or top notch (not sure which is the correct way)!

Google search only comes up with a red top and black top!

What are the most common in the SA registered S14's?

Main differences I can see between the red and black is that the black has better pistons and a port design to allow for better flow.

So joudging from what I have read the black top is the better of the two......am I correct?

Can anyone add anything else to the main differences.

SA S14s have the notch top SR20s and the cam cover is black as well.

The red top comes with a T25g and also does not have VVT

The black top comes with a T28 and has VVT

Thanks! So notch top it is 🙂

What is the most power (reliable and on pump fuel) that anyone has ever gotten out of the black top with bolt on mods?

Anyone here drift their S14? What mods have you done etc.?

Go check youtube for 'Rezlo' to see what proper SR20s can do.

Daniel wrote:

The red top comes with a T25g and also does not have VVT

The black top comes with a T28 and has VVT

it VTC or VCT not VVT~!

aep886 wrote:

it VTC or VCT not VVT~!

What is VTC?

I know:
VCT is Variable Cam Timing
VVT is Variable Valve Timing

Both which are true for the S14 SR20DET

mr lee wrote:

Thanks! So notch top it is 🙂

What is the most power (reliable and on pump fuel) that anyone has ever gotten out of the black top with bolt on mods?

Anyone here drift their S14? What mods have you done etc.?

People run about 400BHP out of them on standard internals, anything above you really should consider forged internals.

I drift mine and full spec can be seen here:
www.kaihatsu.co.za

MarkS14 wrote:

aep886 wrote:

it VTC or VCT not VVT~!

What is VTC?

I know:
VCT is Variable Cam Timing
VVT is Variable Valve Timing

Both which are true for the S14 SR20DET

VCT dont really do much for S14~!!!

It doesn't? Have you felt the mid range difference?

aep886 wrote:

VCT dont really do much for S14~!!!

Maybe yours is broken 😂

Im still trying to work out what VTC is :?:

djtreble wrote:

People run about 400BHP out of them on standard internals,

300kw out a stock internal SR20? for how many minutes?

Cooling, maintenance and proper mapping is your friend 😉

I'm not pulling it out of my arse either, there are poeple here in the UK running 400 bhp on stock internals. You make your own decision though.

djtreble wrote:

Cooling, maintenance and proper mapping is your friend 😉

I'm not pulling it out of my arse either, there are poeple here in the UK running 400 bhp on stock internals. You make your own decision though.

Im sure they are people making 400hp on a stock SR, but for how long?

Stock head gasket lets go at 230-240kw
Pistons usually crack at 260-270kw

Maybe the British know something the Ausi’s don’t… that’s what Ive read many times on the Ausi forums.

Not sure hey, you'll find that if someone runs 400 they won't run it on a reliable daily basis.

I personally am not going to run more than 350bhp for my drift s14 so not really going to be able to test the length of time you can run it on stock internals.

But if I build an SR in the future for 400 I will be able to test the amount of time. Run it till it fails then upgrade the internals so that I can learn the limits from first hand experience.

Ok now here is another question.......

How many ponnies, KW's, BHP's at the wheels would you need to drift successfully around a track or course and be semi competitive?

I'm running only about 200bhp, its all about the setup and driver.

But you don't need any more than 350bhp to compete at a competition level.

It's down to personal prefference though so the best is to set your car up (suspension, etc) and do a few drift practice days, then you will be able to decide form there what you need to do to the car so that you can get more out of it sideways.

My car has had alot of suspension work and fine tuning where it's just right for me now (just need more lock), now all I want is about 350bhp so that I can do larger corners and keep up with some higher powered cars.

Seat time is the most important, you can have all the mods in the world but you will not compete against anyone without practice and fine tuning the car to your driving style.

it not the car... it about the driver^^

For 3rd gear runs you need 300rwkw at least to keep up with the big boys.
NVCT-Nissan variable Cam timing-in the manual.
Helps alot with torque before coming into boost up to 4500rpm with stock cams.
Fully built Redtops make more power than blacktops but thats $$$$
Ultimate is a Ve Na head on a Sr block,but haven't seen a RWD one yet in SA.