The VQ30DET S15 Silvia build

[PoorMans180SX]

It does. There you go.

[notchtops14]

as in bolt up and go, no custom anything for it to work...

[PoorMans180SX]

You need a flywheel spacer I believe.

[db_s13]

Originally Posted by PoorMans180SX

You need a flywheel spacer I believe.

no need for a spacer (not in my case atleast). The only hurdle in bolting it up is the vq30 has a 180 tooth flywheel timing ring (different from a 350z)

[notchtops14]

the vq30det is automatic so it should not have a flywheel... I ben reading that you have to use 350z flywheel and clutch combo

[GrimDrifter]

I had been dreaming of this swap many years ago. However i simply ended up going with a vq35de swap. Great job with fab skills and imagination.

[va240dude]

Very nice custom work, mucho respect, and I like your attention to detail!

[bova17]

im sitting here with my friend and he wants to see a video of a burnout or driveby...not a shooting, dont get the wrong idea

[notchtops14]

Ok guys I need some answers about the transmission set up as I am wanting to attempt this swap... Please anybody with some accurate info

[db_s13]

Originally Posted by notchtops14

Ok guys I need some answers about the transmission set up as I am wanting to attempt this swap... Please anybody with some accurate info

i have a VQ30DET sitting in my coupe right now...350z transmission, JWT flywheel, RPS clutch. You will need a 180 tooth flywheel timing ring and a shortened shifter mount or a 350z nismo flywheel with the vq30det flex plate

[notchtops14]

Where can I get the timing ring from?

[notchtops14]

someone please tell me where i can get this timing ring from? or how i can swap the timing ring from auto flex plate to 350z flywheel..

[codyace]

I still can't over how factory this looks. Good stuff.

[psi999]

RIP Nistune, you will not be forgotten

[psi999]

Originally Posted by notchtops14

someone please tell me where i can get this timing ring from? or how i can swap the timing ring from auto flex plate to 350z flywheel..

Nismo 350z flywheel, stock VQ30DET automatic flex plate.

unbolt the timing ring on 350z flywheel and bolt on VQ30DET flex plate.

Job done in under 5 minutes.

Edit , because im a nice guy

Nissan, deciding to be carnts built the ECU timing ring into the flywheel (this along with front pulley & cam sensor – ECU then takes all 3 readings). Stock automatic this is not a problem but converting to manual = dramas.

Most people that convert to manual (VQ30DET was never available with a manual trans) also convert to an aftermarket ECU – as I wanted to stick with factory injection I had to somehow retain this 360 tooth timing ring (which is built into the automatic flexplate)

Few people have gone down this path before – usually purchasing a 350z fidanza alloy flywheel which has a removable timing ring (as the VQ35 and VQ30 have different tooth counts) - then having water cut VQ30 timing ring made to bolt to the fidanza flywheel…. Or VQ20DE flywheel and run a smaller clutch (fail).

After many hours research I stumbled across a few small pics of the Nismo 350Z flywheel which happened to look very much like an automatic flexplate bolted a flywheel.

After searching for days and days I could not locate a decent picture so decided to order one (with my fingers crossed)…. And as suspected – 4 bolts off comes the 350z starter / timing ring and straight bolt on the VQ30DET automatic flex plate

VQ30DET automatic flex plate in the background:



VQ30DET flex plate bolted up:



Could not be easier!... surprised I’m the first bloke to do it actually.

[unkn0wn]

Just letting you know i joined this forum to say Hi!

I saw your videos on YouTube the other week and absolutely loved your swap. So Awesome! Glad I found the build thread, will defiantly follow this!

I’m ashamed to admit i started a VQ conversion 2 years ago but has been slow going. ie, super slow to nonexistent. I recently got some modervation and mocked up some pipes and hope to spend some more of my time working on her..

Was keeping the stock turbo, doing a 3.5’ exhaust
Got 440cc s15 injectors
Xf TB (like yours?) I modified for s13 TPS with a modified/low intake manafold
Close rad setup and IC in the rad support panel.
Not keeping the AC or anything like that as it’s not my daily and rarely gets driven.

I’d love to pick your brain about all the VQ questions I have, if you wouldn’t mind swapping emails or something?

[psi999]

No problems at all mate.

have pm'd my email

Cheers!!

[Extreme Dimensions]

Beautiful swap!

[simmode1]

Beautiful! Not sure how I missed this thread. I'm a huge VQ30DET fan. I always thought the it was the perfect engine for an S-chassis swap. If I ever get enough money/skills to do one, I certainly will. But in the meantime, I think I'll settle for a VG30ET powered Z31. So cheap its like cheating.

[cured13]

Originally Posted by unkn0wn

Just letting you know i joined this forum to say Hi!

I saw your videos on YouTube the other week and absolutely loved your swap. So Awesome! Glad I found the build thread, will defiantly follow this!

I’m ashamed to admit i started a VQ conversion 2 years ago but has been slow going. ie, super slow to nonexistent. I recently got some modervation and mocked up some pipes and hope to spend some more of my time working on her..

Was keeping the stock turbo, doing a 3.5’ exhaust
Got 440cc s15 injectors
Xf TB (like yours?) I modified for s13 TPS with a modified/low intake manafold
Close rad setup and IC in the rad support panel.
Not keeping the AC or anything like that as it’s not my daily and rarely gets driven.

That's some rad/cooler setup I'm very interested in. Post more pics with details about size of your rad etc. or link to your build thread. Never saw radiator of this proportions in s-chassis.

[unkn0wn]

Originally Posted by cured13

That's some rad/cooler setup I'm very interested in. Post more pics with details about size of your rad etc. or link to your build thread. Never saw radiator of this proportions in s-chassis.

Hey,

I'm super lazy with this build, so the blog/thread I started when i was keen and starting the builds have not been maintained.

The inter-cooler is a generic 450 x 300 x 76mm with 3" Outlets.
Its mounted up in the radiator support panel, with 3inch piping on the cold side and 2.5inch piping on the hot side.

The radiator is a cheap aluminium one for a Holden commodore, i cant remember exactly what year, but i think they are all pretty generic though out 1990-2000.
The filler has been removed, and one has been placed on the Vq's rad hard-line.
it has the right location and size top hose, but the bottom hose is in the right location but is slightly larger, so some sort of adapter need to be made.
Using this because of its dimentions, its actually pretty small comepared to a s13 radiator - its similar to a z32 radiator, but the z32 is taller and is to awkward to fit in the limited space.

if you have any further questions, just ask - happy to talk vq all day, even thos ive never got one running hahaha.

[bc.]

C'mon now, lets not thread jack.

OP, the car looks great, I love the VQ30 in my Maxima, it is a horse and sounds great NA. Your swap looks so factory, except for that big turbo with the heat wrap.

[S14Serge]

Dam this build is so freaking sweet!

[psi999]

Time for an update from down under

Unfortunately Haltech ECU's wont work out of the box on a VQ30DET - easiest way to to resolve this issue is a custom 36-1 trigger wheel.

So i had one machined up.



Which ended up as this (interference fit on crank pulley).



Then attached with M5 bolts, tooth removed and painted.



And finally installed with raised sensor platforms.



Stealth ECU installation... what stand alone. Will be run through the stock wiring loom



And (after lots of late nights) its running.



Few little jobs to be sorted including the Idle solenoid - 50/50 chance of wiring it the wrong way, it was the other way

I'll also need to check trigger wheel offset (synchronise the ECU) and drop in a new battery, last 6 months sitting around hasn't been kind.

Other than that it all seems to be working as it should -running on all 6 with the worlds shittiest fouled plugs.... Happy Days

Also as part of the Haltech install i have also dropped in a flex fuel ethanol sensor - i'll be able to fuel this bad boy up on anything from pump premium unleaded to 100% ethanol and the ECU will adjust boost, timing and fuel maps to suit.

Saving the planet with every top gear skid

[bc.]

Ho Lee Fuk!

[psi999]

Originally Posted by bc.

Ho Lee Fuk!

No Asiana Captain here LOL

Updates!

Shift light mounted. Hidden away in one of the A/C dash vents.



Super bright Cree LED so no issues with stealth install - it'll light up the windscreen at night its so bright.



And after a bit of frigging around with the maps i took it for a ~1.5 hour road test this afternoon - laptop on the passenger seat and started to tune.

Idle sorted, tad high (1000rpm) but its consistent with decent AFR's



And a short video of in car.



Few things to fix up, no tacho (wiring/software config - not high on priority list) and idle stepper motor hasn't been touched yet.

More tuning this week

[Frankenstien_Panda]

Originally Posted by psi999

Well done, if you need any help feel free to drop me a line

Just a note, my motor is a Y33 Cima motor, that motor is a Y34 (Neo) - I think i might have a wiring diagram for that but absolutely have a spot on Y33 diagram.

Also, if you are going to use the auto, make sure they include the auto ECU, its separate from the engine ECU and many forget to include it.

hows it goin bro, i kno this is an older post, but i was wondering if u still had the ECU pinout for the y33? i have a Y34 ,,im still using the stock auto ecu ,i have yet to drop it in because of wiring, i got it to start but it it runs luike its in safe mode (limp mode) which ever term u prefer lol ,, any help would b greatfully appreciated thank u

[notchtops14]

so in every build i have seen everybody custom makes their intake plenums and does a crazy turbo set up, i am wanting to run stock turbo set up, i am wanting to run factory ecu and turbo set up, is there any clearance issues with turbo manifold "i know the rear exhaust that runs through the back of the motor will be an issue" i am wanting to keep it nice and simple with stock ecu and turbo.. is that possible? by the way it will be going into a usd s13 chassis.. thanks in advance

[db_s13]

Originally Posted by notchtops14

so in every build i have seen everybody custom makes their intake plenums and does a crazy turbo set up, i am wanting to run stock turbo set up, i am wanting to run factory ecu and turbo set up, is there any clearance issues with turbo manifold "i know the rear exhaust that runs through the back of the motor will be an issue" i am wanting to keep it nice and simple with stock ecu and turbo.. is that possible? by the way it will be going into a usd s13 chassis.. thanks in advance

you have to relocate the turbo no matter what you do. In the stock location the steering shaft runs right thru where that turbo sits. The easiest and cheapest route will be a relocation pipe like the Z31 folks

[notchtops14]

Damn, so the actual turbo location is the problem, and what pipe you talking about relocating?