Twin Turbo Or Supercharge?

[gadget1382]

I guess it all comes down to "How much is your time hassle and tools worth"

[350GT350]

In AUS, we are still discussing about the TT setup; however, in the USA, a v35/ z33 with turbo or supercharger is COMPULSURY gear on the car...

I think we should think the other way around, focus on the performance and the gears selection instead of choosing brand names...becuz it's all about how u want, what combination between each components, isn't it? Then we can talk about the difference between each TT or SC setup...the reason i am saying that is becuz i don't think we have many v35 owner or z33 owners with TT setup in this forum yet..

To buy parts in the USA market and to get them install isn't a bad idea....We need to start learning DO IT instead of READING IT

here is the parts i have recently bought from the USA, if anyone wants to join me, we can then share the shipping costs then....

*Greddy TT kit with FMIC (twin TDO5 18G turbos, 440c.c. injectors, e-manage piggyback only, 2x exhaust manifolds, 2xexternal wastegates, Greddy FMIT kit, 2x air filters, radiator overflow tank, lager oil pan, oil feed lines and oil return pipe; all brackets, gaskets, fittings, couplers, heat wrap, zip ties and vacuum lines)

*ARP head studs ========== for later engine mods only

*ARP connecting rods bolts==== for later engine mods only

Later buying items (when the money has been saved enough)

*Brian Crower valvesprings/ retainers + stageII cams

*Brian Crower stroker kit 3.8ltr or 4.15 ltr still deciding

The above items which i have recently bought, u can't imagine how much i have spent, better than anything any brands in the AUS market

p.s. all parts have the manual instruction for the local mechanics to install, so installation won't be a problem

cheers

[350GT350]

One additional issue, if APS isn't interested in v35, the forget them, let's find out a new market for v35 owners....

cheers

[Sydneykid]

Personally I would never let a Trust turbo anywhere near any of my cars when they are plain bearing and oil cooled. We do far too much circuit work for them to be even considered.

Cheers

Gary

[NoFX_Hardcore]

Not sure if anyone's mentioned this coz I didn't wanna read 3 pages but... I found this site with the FULL kit to turbo the V35 engine... The kit comes with turbo(s), manifolds, dump/front pipes, exhaust, ecu, injectors, fuel pump, air filter(s), bov, all fittings and hardware and instructions for installation...

Kits are from $4700 - $9000 but I think it is probably in US$ which isn't that bad anyway since the exchange rate is pretty good these days.

http://www.turbo-kits.com/350Z_turbo_kits.html

Edited May 9, 2008 by NoFX_Hardcore

[350GT350]

Is it worth to buy the kits for LHD model and modify it to fit RHD model V35?

The reason i am saying that is becuz it is very cheap to buy TT kits from the states rather to buy and fit in AUS.

how many things that need to be done to modify a twin turbo kit that fits LHD and convert it to the RHD V35?

cheers

[gadget1382]

Providing there's enough clearance around the steering column and starter motor (they switch sides too) i dont see why any LHD TT kit would not fit a RHD of the same vehicle.

[350GT350]

Providing there's enough clearance around the steering column and starter motor (they switch sides too) i dont see why any LHD TT kit would not fit a RHD of the same vehicle.

so, LHD TT kit shoud fit RHD v35? with some mods as well?

cheers

[Sydneykid]

so, LHD TT kit shoud fit RHD v35? with some mods as well?

cheers

From what I have seen the HKS cast manifolds look different LHD versus RHD. Personally I don't think it's worth the risk. The Nengun price is pretty much the same as what I can get them from the US.

Cheers

Gary

[scathing]

The steering column is really close to the exhaust manifolds. I know that extractors for the car are steering side specific. You can't buy US extractors for our cars.

I can't see the situation being any better with turbochargers.

[666DAN]

It's funny I went down this path a little while ago plugging in what would be better for the average Joe (me) and came up with the VQ30DET swap. Prices for the VQ30DET Neo are pretty good in Japan, aftermarket wrap-around manifolds are easy to get + a nice HKS single would see some decent power for no massive outlay, plus you get to sell off the VQ35DE at the end

Yes you lose 0.5L but you've got a more stable setup to begin with thanks to the VQ30 being built for FI

[Sydneykid]

It's funny I went down this path a little while ago plugging in what would be better for the average Joe (me) and came up with the VQ30DET swap. Prices for the VQ30DET Neo are pretty good in Japan, aftermarket wrap-around manifolds are easy to get + a nice HKS single would see some decent power for no massive outlay, plus you get to sell off the VQ35DE at the end

Yes you lose 0.5L but you've got a more stable setup to begin with thanks to the VQ30 being built for FI

It's not a bad idea, but personally I shy away from engine swaps, different engine number, rego, compliance, insurance and all that other crap. Plus I would have to pull the engine to swap it over, so I might as well stick some rods and pistons in the VQ35 and stick it back in. Not a lot of extra work really.

Cheers

Gary

[gadget1382]

Sorry?! How is pulling apart an engine, buying components that are for a FI setup and re-assembling it adding a turbo, modded ecu, Intercooler etc easier than swapping an engine in with it's ECU and adding an intercooler?

I know you said it would be a little more work. But things like Insurance and compliance would be more difficult with FI on an engine not designed for it?! So those positives over it are cut.

Pulling apart an engine is no small mean feat.

Edited July 25, 2008 by gadget1382

[350GT350]

hi guys,

Thank you for all your precious information..

However, i have ended up buying the HKS twin turbo from the newgun.com, and some pieces and internal parts from the states.

When the parts have all arrived, the whole engine and turbo setup shouldn't need more than 6 weeks to finish, when that time, i'll share my horse power to everyone on this forum.

When the job has started, i'll recorded all the steps and what's needed to be careful during the engine rebuilt process...please be patient guys, the new thread will be opened soon...

cheers

[Sydneykid]

Sorry?! How is pulling apart an engine, buying components that are for a FI setup and re-assembling it adding a turbo, modded ecu, Intercooler etc easier than swapping an engine in with it's ECU and adding an intercooler?

I know you said it would be a little more work. But things like Insurance and compliance would be more difficult with FI on an engine not designed for it?! So those positives over it are cut.

Pulling apart an engine is no small mean feat.

Let's break it down.

You wouldn't run the VQ30 without an intercooler would you? Both engines should have an intercoooler, so so surely that's a neutral.

Buying components is simple, VQ35 forged pistons and rods are an off the shelf buy in the US, 72 hours for delivery via UPS. The standard bearings and gaskets as just fine.

The wiring harness and ECU are very different for a VQ30. So I doubt there is much difference there to piggy backing an ECU for the VQ35.

A matching engine number saves a lot of issues. No one knows that a V35 isn't turbo charged standard. The trick is not to get all bling with the installation, keep it stock looking and no one will know, especially a twin turbo install.

Building an engine is only complex when you start modifying it, if you just replace the components with like sized ones (albeit forged) then the work is simple and quick. It's only when you start getting into larger bores, longer stroke, oil system upgrades etc etc that it gets tricky. With all the components ready to go, I could upgrade VQ35 internals for 800 bhp in under a day. I am lucky in that I know how ot build and engine, but even if you paid a decent machine shop to do the assembly for you, it wouldn't amount to anywhere near a $1K.

The HKS twin turbo kit bolts up to the standard VQ35 cats and exhaust, a VQ30 installation, being single turbo, doesn't.

There's advantages both ways, but a VQ35 twin turbo with forged internals is always going to be a better way to go long term than a standard VQ30 standsrd single turbo with it's unique flanges.

Cheers

Gary

[350GT350]

i totally agree with you Gary...

and that's what i am planning to do...

the only concern is that during the engine rebuilt, there are not many work shops that have experiences to do the machine work or the measurements for the internals, especially i am in brisbane, it's getting harder to find a good work shop here...

in the mean time, i am just collecting all the parts i need for the HKS twins, and then start looking for some decent work shop to rebuild the engine, becuz i can not affort to accept any failure during the process of rebuilding my VQ35

[rs73]

anyone know VQ35DE specialist down in VIC?

[Stephen Thorpe]

i totally agree with you Gary...

and that's what i am planning to do...

the only concern is that during the engine rebuilt, there are not many work shops that have experiences to do the machine work or the measurements for the internals, especially i am in brisbane, it's getting harder to find a good work shop here...

in the mean time, i am just collecting all the parts i need for the HKS twins, and then start looking for some decent work shop to rebuild the engine, becuz i can not affort to accept any failure during the process of rebuilding my VQ35

Really looking forward to reading more about the plan to TT charge the V35...

Loved where this post was going as you and Sydneykid appear to be right around the same spot as me, except i don't have the car yet.

Do I buy a V35 or a R34 GTR which is considerably older? There a benefits and minuses to both but adding turbo charging to the later model, may well be what I should go fo. A bit cheaper too in the long run.

Looking forward to hearing the outcome.

Just for clarity, I presume the standard VQ35 is fairly high compression, will it handle 7psi without touching the internals? How strong is it?

Cheers

[Stephen Thorpe]

anyone know VQ35DE specialist down in VIC?

Sorry, I don't know anyone as such, what do I need to know?

I have a mate who eats, sleeps and breathes Nissan that might help. He has outstanding ability and he is the 'business' however if you need a rebuild, I haven't seen him do one for a while. Although if you are only looking for fault finding and servicing/repair he is the man.

He has done a fair few VQ35's too and is good with research...

[jaik]

Well I brought a Vortech Complete Supercharger kit which came with Piggyback ECU, Intercooler, Fuel Pump all plumbing etc etc - it came with absolutely everything I needed and nothing I didnt, pretty much bolted all in correctly as expected. Been running for 15,000km so far with no hassles. 2 cartons of beer, a hoist and 2 mates and it was done in a long weekend. Couldnt be happier since the kit cost me $4750USD (94 or 95 exchange rate) and about $1000 shipping. No duty or GST. so for under $6k im forced, and loving it.

The tune is a little rich but atleast my engine is still living. Only running 7psi at redline, and AFRs are sitting at about 10:1 apparantly, so a 12psi pulley is on the way. Lets party.

JK