Can you put a VVT head on a 98 SR20DE

[jdmnismo180]

I know they do LS/ VTEC combos for hondas, but can I put a VE head on my 98 SE-R? If so what is the jist of the parts and skills needed to make it happen? Will that jdm computer plug into my car? Any links to such a swap would be greatly appreciated.Thanks Matt

[EZcheese15]

Why do you want to do this?

Just because a LS/VTEC combo makes more power doesn't mean an SR20DE/VE combo will.

Also, keep in mind, unlike the B18C engine, the SR20VE is not normally available in the U.S. So you will not find an SR20VE head being sold by itself. You are only going to be able to find the complete engine, in which case, you should drop the whole thing in anyway.

I don't know if the SR20VE head does or doesn't fit on an SR20DE block (I would assume it would, but who knows), but I don't see a point in trying it.

As far as the computer goes, you will need the entire SR20VE engine harness. The SR20VE computer will *not* plug into your SR20DE engine harness.

[EZcheese15]

Oh yeah, and btw....I just noticed this...

But the SR20VE is not VVT, it's VVL. A VVT engine does not have a special designation by Nissan. For instance, the QR25DE is a VVT engine. Variable Valve Timing and Variable Valve Lift are 2 different things

[jdmnismo180]

So its never been done? How can a DE/VE combo not make more power?

[EZcheese15]

Well, I don't know the Honda stuff very well...

But if the bottom end of the DE and VE are identical, then there would be no power gain by using a DE block with a VE head, because it would essentially be a stock VE.

However, I don't know if this is or isn't true, but it's definitely something you need to consider before you just jump into the idea.

[BORNGEARHEAD]

Yes, you can put a ve head on your sr20de block. The sr20ve and sr16ve head are identical and either can be used. the difference is going from 140hp to 190hp. The head is a smaller c.c. head which will also raise compression. I recommend going the sr16ve route because the 16ve motors are a lot cheaper and they also have stronger, better valve springs. There has been quite afew people who have done this. Then once you do the head swap, you can swap out the cams for some sr16ve N1 cams and get an N1 throttle body and get some serious hp increase. You could use the sr16ve pistons in the de block with the 16ve head and you will have roughly 14:1 compression. Of course that would be on race gas only. Fujitsubo makes the header you want to use. You can then run 3" exhaust. On slicks maybe get ya into the 11s with a fully gutted interior.

[EZcheese15]

Born, thanks for clearing things up. What you said all rings a bell in my head. I just don't usually read into the VE stuff much cuz I've never had one. But I think I remember reading something along those lines. I know the N1 cams are better, that's one thing I definitely remember

Man, I sell my B14 and I almost fall out of the loop of SR topics.

[SpIcEz]

also JWT is currently working on VE cams.

They will make around 30-40whp over stock.

Something to look forward too.

Oh and they'll also be making a MORE aggressive set.Which will be used with a 3" exhaust collectorand 3" catback More overlap and lift.

They'll be some sick arse race cams.

[cesarmd7]

Yes, you can put a ve head on your sr20de block. The sr20ve and sr16ve head are identical and either can be used. the difference is going from 140hp to 190hp. The head is a smaller c.c. head which will also raise compression. I recommend going the sr16ve route because the 16ve motors are a lot cheaper and they also have stronger, better valve springs. There has been quite afew people who have done this. Then once you do the head swap, you can swap out the cams for some sr16ve N1 cams and get an N1 throttle body and get some serious hp increase. You could use the sr16ve pistons in the de block with the 16ve head and you will have roughly 14:1 compression. Of course that would be on race gas only. Fujitsubo makes the header you want to use. You can then run 3" exhaust. On slicks maybe get ya into the 11s with a fully gutted interior.

So, would the sr16ve head fit a RWD sr20? coz that would be bad ***, and how much would it rise the compresion? are there any aftermarket head gaskets that would lower it back down? also you mentioned that the headers need to be swaped, does that mean that the rwd sr would need a cutom ex. manifold?Thanks.

[srsig]

The pin outs are quite similar on the DEs and VE(Not N1). I've used a GA16DE, SR18DE, SR16VE on my SR20VE(complete Primera electrical harness..) Lacks go, Cams don't come in on the DEs..........

[Junqueira]

Hi, I need an advice from SR20 gurus :-) I have P11 (P11-144, facelifted Primera) and I´m planning VE head swap on my DE or put tomei poncams to my DE. My question is: Will I need piggyback to run VE head on DE block with my DE ecu, or no? In my country everybody say, that piggyback is needed due to lean mixture - result to detonation. But on other forums say DE ecu (with DE fuel map, ingnition timing map etc.) will serve good. RPM switch is obvious.
I know VE has potential much higher than 200 hp with piggyback tune up, but I'm limited by my CVT transmission which was faktory attached to SR20VE with 197 Nm (145 lb)

[2_Liter_Turbo]

You will definitely want to either get your DE ecu reflashed or get some sort of piggy back as the air fuel requirements will change once you go to a VE head.