VTEC vs. SR20DE

[nupinpanty]

Simple Question: Horse Power to the ground, wich motor will produce the most to the ground? The B16 with int,hea,exh,cams & ECU. The same for the SR,Type C Cams,JWT ECU,int,hea,& exh. How close would it be?

[LilMax]

SR20DE baby!!

[Morpheus XIII]

Actually, the B16 would win either stock or with equal simple bolt-on modifications. But you are SERIOUSLY missing the point of the SR here. First off if you wanted to compare Nissan to Honda I-4s, you would need something in its class, like an SR16VE from the Pulsar VZ-R (non-N1). Both having variable valve/cam timing technology, this would be a hardened match. The SR20DE shouldn't qualify a flow match with Honda since it's not designed for that all-motor type of application; most Nissan enthusiasts know that the original SR was designed for heavy stock internal turbo boost, something the B-series motor has a hard time accomplishing.

[jprimera]

you forgot the torkey! with the same mods it will be close in hp (honda will win in hp)but torkey the sr20de will kick asses
do not forget torke win races hp sels hondas

[Morpheus XIII]

Oh, totally, completely forgot about the torque; good call.

[0805041605]

the engines are about equal if you consider hp, and torque.

[0805041605]

the sr16ve would whoop the shit out of a b16. those two engines are not in the same league.

[thewholefnshow]

Even when you take the power into consideration, the sr20 seems to put it to the ground better. I know a lot of people in the new sentra, with 145 horses that are giving a lot of si, sir and type r's a run for there money. The problem with the honda is it makes no power at all till at least 4500 rpms, if you take into account usable power, the sr20 has a lot more. you might get beat in the long run, but at least you won't be driving a honda so you can look at yourslef in the mirror every morning... lol.

[Moppie]

Before buying my SiR (a real DOHC VTEC civic, not the crap USDM one) I drove, and tried hard to buy a SSS sentra. (160hp SR20)

I can honsetly say the B16a has much better low down power delivery.
Sure the sr20 has more midrange Torque, but then since its also 25% bigger than the B16a it should. However It lackeds the almost totaly flat Torque curve of the B16a from idle to redline.
The SR20 has more Torque but its not as useable. But as Morph mentioned, you can't really compare the two engines as they were designed with differnt goals in mind, and the Honda has a slight technology edge of the Nissan.

[CHRIS200T]

Originally posted by Moppie
Before buying my SiR (a real DOHC VTEC civic, not the crap USDM one) I drove, and tried hard to buy a SSS sentra. (160hp SR20)

I can honsetly say the B16a has much better low down power delivery.
Sure the sr20 has more midrange Torque, but then since its also 25% bigger than the B16a it should. However It lackeds the almost totaly flat Torque curve of the B16a from idle to redline.
The SR20 has more Torque but its not as useable. But as Morph mentioned, you can't really compare the two engines as they were designed with differnt goals in mind, and the Honda has a slight technology edge of the Nissan.

Honda has a technology edge?? uhhhh I think not. Why does the SR16VEN1 engine found in the N1 make more HP per Leter then any honda motor. 1595 CC 200HP 125.39 HP Per Leter
S2000 makes 120 HP Per leter.
Hondas VTEC is a 2 stage system
Nissans VVL is 3 Stage = 3 profiles Intake and Exhaust can turn on at different times Honduh can't

Nother intresting thing I found the New 2.0L VTEC found in the Acura RSX. Funny how thay copyed the dynamics of the SR20 Block. Same size piston bore and stroke. the engine is exactly the same displacement down to the CC as the SR20. Can't honda be origanal!

[Moppie]

Originally posted by CHRIS200T


Honda has a technology edge?? uhhhh I think not. Why does the SR16VEN1 engine found in the N1 make more HP per Leter then any honda motor. 1595 CC 200HP 125.39 HP Per Leter
S2000 makes 120 HP Per leter.
Hondas VTEC is a 2 stage system
Nissans VVL is 3 Stage = 3 profiles Intake and Exhaust can turn on at different times Honduh can't

Nother intresting thing I found the New 2.0L VTEC found in the Acura RSX. Funny how thay copyed the dynamics of the SR20 Block. Same size piston bore and stroke. the engine is exactly the same displacement down to the CC as the SR20. Can't honda be origanal!

ok, where do I begin.
1st you sound like you know very little about how an engine works, so before you read any further I sugest you go get a good book and have a read.
Now the SR16VE is a VERY rare and every extreme engine.
There are practicly no english language information sources on it, and even though I live in a country where 60% of the vechile fleet are used Japanese cars I have never seen one. Just because one engine has more hp than another dosnt mean it is technologicaly surerior, it just means it was developed a little more. Wild cams and some mild head porting will push a B16a well beyond 200hp with little trouble.
Where did you hear that the VVL is able to operate the cams independantly? This would do nothing more than make the change over a little smother, and guess what B series engines do the the same thing, the two cams to not switch at the same time.

Now after all of that, please note that this thread is comparing the NON VVL SR20de with a VTEC b16a. In which case regardless of whether or not the SR16VE exists, the B16a has a technology advantage.

As for the RSX sharing the same bore and stroke, well I suggest you go read up on a thing called the rod ratio. Most 2l 4cly engines share the same bore and stroke, and if you do a little resurch you will find plenty of other engine that ceased production before the SR20 was even thought of that also have the same bore and stroke.

[CHRIS200T]

Originally posted by Moppie


ok, where do I begin.
1st you sound like you know very little about how an engine works, so before you read any further I sugest you go get a good book and have a read.
Now the SR16VE is a VERY rare and every extreme engine.
There are practicly no english language information sources on it, and even though I live in a country where 60% of the vechile fleet are used Japanese cars I have never seen one.

Well thats good.. We have 4 of them in stock at our shop. 2 2.0's and 2 1.6's

Just because one engine has more hp than another dosnt mean it is technologicaly surerior

True so what does Honda have that Nissan doesn't. Honda doesn't have NEO DI Turbo motors or
VVL Turbo motors like Nissan does. SR20VET 280 HP at a mild 10 PSI of boost.
[/b][/quote]

Wild cams and some mild head porting will push a B16a well beyond 200hp with little trouble.

That argument can go one forever. So can the VVL even bigger cam's
and some porting. and if so why didn't thay do it

Where did you hear that the VVL is able to operate the cams independantly?

Where did I hear!! We have 4 or them there is 2 silinoiods. one for each cam.

This would do nothing more than make the change over a little smother, and guess what B series engines do the the same thing, the two cams to not switch at the same time.

B motors don't switch independently. Its a on off switch based on 3 items
oil presure 19 MPH on speed sensor and RPM. and being a on of switch thats why on every Honda VTEC Dyno sheet I have seen it has a drop in HP on the cam switch or at vary least with a good tuner a flat spot.

Now after all of that, please note that this thread is comparing the NON VVL SR20de with a VTEC b16a. In which case regardless of whether or not the SR16VE exists, the B16a has a technology advantage.

Well your intitaled to your wrong opinion.

As for the RSX sharing the same bore and stroke, well I suggest you go read up on a thing called the rod ratio.

Rod ratio? I think your thinking of the rod to stroke ratio. what is the RSX 1.81:1 something like that. I don't recall exactly

PS: All you will ever see is the back end of my NISSAN.
the 500HP honda distroyer.. ohh and tranny distroyer.

[F20C]

Originally posted by CHRIS200T


Honda has a technology edge?? uhhhh I think not. Why does the SR16VEN1 engine found in the N1 make more HP per Leter then any honda motor. 1595 CC 200HP 125.39 HP Per Leter
S2000 makes 120 HP Per leter.
Hondas VTEC is a 2 stage system
Nissans VVL is 3 Stage = 3 profiles Intake and Exhaust can turn on at different times Honduh can't

Nother intresting thing I found the New 2.0L VTEC found in the Acura RSX. Funny how thay copyed the dynamics of the SR20 Block. Same size piston bore and stroke. the engine is exactly the same displacement down to the CC as the SR20. Can't honda be origanal!

Are you nuts? N1 is a limited edition work of art from Nissan. It's not even a mass production model. JDM Spec S2000 have 125hp/Litre.

VTEC found on S2000 is actually 3 Stage.

Yes it was posted in SCC a long while ago. However they are worlds different. NEO VVL is not comparable to i-VTEC.

[F20C]

Originally posted by CHRIS200T
[b]
True so what does Honda have that Nissan doesn't. Honda doesn't have NEO DI Turbo motors or
VVL Turbo motors like Nissan does. SR20VET 280 HP at a mild 10 PSI of boost.

Honda doesn't have much Turbo engine period. If you want Turbo you have to look at aftermarket parts. F20C with T4 Turbo at 8psi produce 400hp.

[G-Forces]

Oh gawd guys this could go on forever. Just give props where props are due and let's just be friends.

Just because Nissan doesn't mass produce their VVL engines in North America doesn't mean Honda has a technical advantage NA. I'll admit they were the first with a mass produced variable cam engine and the S2000 is a beast but I'll take a S15 DET anyday.