350Gt Vq35De +T Build?

[scotty nm35]

If you plan to use VQ30 manifolds, you will need to stick the turbo down in the stock position, under the left bank. Not sure a $400 Holset will be up to the task, or even fit. The manifold adapter/T3 flange will be the main issue, unless you simply highflow a stock VQ25det or VQ30det turbo. Expect a lot of swearing.

[andy_cliff]

I know you can tune the stock ECU... The people that do it are called "Uprev", which is being used by a lot of people to tune with.

I thought 9k would have been standard for any plus T. I've over estimated on somethings and I'm not concerned if it goes over.

I was asking more about MAF or are you going to run less than 5psi? I believe that is when the stock MAF maxes out.

I have heard of Uprev, however i have never heard the term used outside of the US until now. Im sure with 9k you would have a powerful & reliable setup.

Im not looking at spending that type of money as i would do an RB26dett swap for that money as in NZ a RB26dett and box costs around 6k...

Nope, i haven't had any reason to believe that the MAF would max out at 8/9 psi? The US F/I bolt on kits don't require a MAF change so i had presumed (never good) that the MAF was the same, therefore no issue?

If you plan to use VQ30 manifolds, you will need to stick the turbo down in the stock position, under the left bank. Not sure a $400 Holset will be up to the task, or even fit. The manifold adapter/T3 flange will be the main issue, unless you simply highflow a stock VQ25det or VQ30det turbo. Expect a lot of swearing.

Cheers for the advice again Scotty. Why is that if you don't mind me asking? No way of cutting/welding the manifold to suit having the turbo further foward like the setup posted prior?

Yeah, i wouldnt imagine the Holset would fit down in the stock position. I will look into the cost/what is involved of high-flowing a stock turbo and see if it is worth it.

I also have this turbo in my watchlist.

FPT Gt3076 Turbo (NZ company)

http://www.trademe.co.nz/motors/car-parts-accessories/performance/turbos/auction-688041090.htm

Thanks mate. Much appreciated.

Edited January 26, 2014 by andy_cliff

[scotty nm35]

Don't buy that turbo, or any second hand turbo for that matter. If you are tight arseing on the the turbo you had better stop what you are planning now, as it will easily cost twice what you are thinking anyway, and the turbo selection is the most critical part.

RB swap. lol. You have a better base for power in your car at the moment, without modifying your car completely. Best engine to swap in would be the VQ25det (or VQ30det), or simply build your engine if you plan more than 250kw.

Cutting and welding cast manifolds will end in tears, perhaps a custom steampipe set of manifolds would be better? But your budget doesn't allow for that...

[andy_cliff]

Don't buy that turbo, or any second hand turbo for that matter. If you are tight arseing on the the turbo you had better stop what you are planning now, as it will easily cost twice what you are thinking anyway, and the turbo selection is the most critical part.

RB swap. lol. You have a better base for power in your car at the moment, without modifying your car completely. Best engine to swap in would be the VQ25det (or VQ30det), or simply build your engine if you plan more than 250kw.

Cutting and welding cast manifolds will end in tears, perhaps a custom steampipe set of manifolds would be better? But your budget doesn't allow for that...

Not a problem. I was simply seeing if there were any cheaper reconditioned turbos worth using. Stupid idea really. Alright ill make sure i keep a pretty penny aside for the turbo.

Hey, whats wrong with the RB26? I know the 20 series is laughable but the 26 is a great engine Granted the VQ is a much better option to get easy power from.

Speaking of a VQ30 swap i remember reading an article from NZPC magazine that had a 350z that did just that.

Good man, that is what i was wanting to know. Thanks! Yeah, I was looking at getting Sinco involved with a custom manifold but like you stated, the budget wont allow.

[wht510]

Nothing wrong with the late model RB20! Bullet proof and you can stick heaps of boost on it and rev the nuts off it, and it will love every minute of it. Just needed more capacity for heavier cars!

If you have limited budget, the easiest swap would be the VQ25DET, with factory ECU, and turbo. When you save a little more, high flow the turbo, dump pipe, inlet duct, fuel pump, injectors etc. etc. and run an aftermarket ECU or piggy back. If you can do most of the engine transplant work yourself, then the main costs are the engine half cut. Not sure if you need it to be engineered where ever you are, but you can argue the engine runs in a similar car of similar power with similar emissions, and the certificate would be fairly straight forward.

Other option would be to wait for a second hand greddy/power enterprise/HKS or similar turbo kit to come up. Sometimes they do appear for reasonably good prices, but go pretty quickly!

Expect prices to be around $6K though... depending on the kit.

Otherwise, save your pennies and do it properly with an APS kit for the 350Z....

[andy_cliff]

After plenty of thinking and dwelling on the advice from Scotty and others about the constraints of cast iron manifolds i have decided to take a different path for the build.

This build is no longer going to be completed in the near future. The reason being is i am going to be spending more money.

I found out more info on the HKS Single Turbo setup in the past couple of days and i plan to base my kit around theirs.

PS: Please let me know if the photo use is offensive to the owners as i have not asked for permission to use them.

From what i can see from the kit it seems that this would be the best path to go down with some slight changes.

HKS Single Turbo Kit - 350z/G35 (approx 270rwkw)

The last thing i want to do is have to do this twice so im going to be spending some more money on the turbo and wastegate.

I will be keeping an eye out for a HKS 3037 or similar for the turbo. Seeing as they work well with the numbers im chasing, it is a win win.

With this setup from what i can see i will be able to use the stock manifolds as they seem to be essentially the same as the HKS ones?

HKS just used Nissans VQ manifolds? If so. Thats awesome

[scotty nm35]

Yes, they are VQ25det manifolds, I have a set here if you need them.

Understand that HKS used a T2 version of the 3037 with a very restrictive cast adapter, it was the only let down of the kit as I saw it.

[andy_cliff]

Yes, they are VQ25det manifolds, I have a set here if you need them.

Understand that HKS used a T2 version of the 3037 with a very restrictive cast adapter, it was the only let down of the kit as I saw it.

He strikes again

So what is the difference exactly between the VQ25det/VQ30det manifolds exactly? Seeing as you provide more knowledge than a google search.

Interesting. That is good to know, I will keep that in mind.

[scotty nm35]

No idea, the manifolds could be similar, but I know the turbo's are different...

[Howaitonaito]

Seeing as you provide more knowledge than a google search.

Please when it comes to this stuff, Scotty is google.

[PN-Mad]

lol.

Someone gave Goocotty the photos of the "restrictive adaptor".

Good to see you taking this path. I dunno about 270kw though...