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SR20DET notch top or top notch :)
Posted: Thu Jan 27, 2011 11:18 am
by mr lee
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.
Posted: Thu Jan 27, 2011 11:40 am
by Skylinefreak
SA S14s have the notch top SR20s and the cam cover is black as well.
Posted: Thu Jan 27, 2011 11:40 am
by Daniel
The red top comes with a T25g and also does not have VVT
The black top comes with a T28 and has VVT
Posted: Thu Jan 27, 2011 11:52 am
by mr lee
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.?
Posted: Thu Jan 27, 2011 4:26 pm
by Skylinefreak
Go check youtube for 'Rezlo' to see what proper SR20s can do.
Posted: Thu Jan 27, 2011 5:51 pm
by aep886
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~!
Posted: Fri Jan 28, 2011 9:54 am
by MarkS14
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
Posted: Fri Jan 28, 2011 10:20 am
by djtreble
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
Posted: Fri Jan 28, 2011 11:52 am
by aep886
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~!!!
Posted: Fri Jan 28, 2011 12:05 pm
by djtreble
It doesn't? Have you felt the mid range difference?
Posted: Fri Jan 28, 2011 12:18 pm
by MarkS14
aep886 wrote:VCT dont really do much for S14~!!!
Maybe yours is broken
Im still trying to work out what VTC is
Posted: Fri Jan 28, 2011 12:21 pm
by MarkS14
djtreble wrote:People run about 400BHP out of them on standard internals,
300kw out a stock internal SR20? for how many minutes?
Posted: Fri Jan 28, 2011 1:17 pm
by djtreble
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.
Posted: Fri Jan 28, 2011 1:30 pm
by MarkS14
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.
Posted: Fri Jan 28, 2011 1:35 pm
by djtreble
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.