A 900 Wheel Horsepower Nissan 370Z
 

We knew the day would come when Carl would get tired of the twin turbo kit power on his stock block Nissan 370Z, but we did not know it would come so fast!* After about a year of driving around on 600 rwhp in Chicago, Carl contacted us to inquire about more power for his car with an initial goal of 750 rear wheel horsepower.

https://i.imgur.com/x70LAXa.jpg?1

We chose to use our Stage 1 VHR longblock package to allow Carl to reach his target horsepower goal of 750 rwhp as the stock engine has a limitation and is not capable of achieving that power level over time. Our stage one longblock engine package includes upgraded pistons, rods, bearings, studs, gaskets, and minor headwork along with a closed deck engine block.

https://i.imgur.com/0mVpH5K.jpg?1

https://i.imgur.com/GggVchO.jpg

With any of the longblock packages that we offer, we include new timing components, water pump and oil pump as these items are relatively inexpensive when it comes to building a motor and can save an individual a lot of time and money in the future.

https://i.imgur.com/6eBgDUf.jpg?2

We chose to stick with the stock compression of 11:1 since E85 was going to be the primary fuel of choice and the OS giken triple disk clutch was going to be the clutch that would be able to handle the power and torque.

https://i.imgur.com/E7gnUiC.jpg?2

https://i.imgur.com/CV5b8Tg.jpg?1

With the turbo kit mounted on the freshly built engine it was time to install it into the car and determine an intercooler that would be capable of surpassing the horsepower goal that Carl had initially set.

https://i.imgur.com/j73juwH.jpg?1

Upgrading the fuel system would be required to be able to supply enough fuel to the engine. We also chose Injector Dynamics 1700cc injectors and the CJM twin pump assembly utilizing the dual 450 fuel pumps to complete the fuel system.

https://i.imgur.com/YSHxady.jpg?1

It was now time to get the Z on the dyno for break in and also to see what power level we could achieve with the Stage 1 AAM twin turbo kit. Unfortunately with the turbos that are included in the stage 1 kit we were not able to hit Carl’s horsepower goal. It was now time to upgrade the turbos and increase the target wheel horsepower goal to 900!

https://i.imgur.com/Jj8V5mK.jpg?1

https://i.imgur.com/iNaKAbO.jpg?1

Borg Warner EFR 7163 turbos were purchased and we also converted the standard internal wastegate setup to an external wastegate setup to allow for a more precise way to dial in the boost via a spring selection.

https://i.imgur.com/yicMXty.jpg?1

https://i.imgur.com/9hXODFp.jpg?1

With the Z’s powerplant built, it was now time to focus on getting the power to the ground as the rear suspension components were completely stock and were in desperate need of upgrading.* The stock LSD can only take so much abuse, so we decided to upgrade to the OS Giken rear differential along with our billet differential cover.* SPL rear camber arms and toe arms were used along with 1200 horsepower upgraded Driveshaft Shop axles and carbon fiber driveshaft.

https://i.imgur.com/f94Wmh5.jpg?1

https://i.imgur.com/5Qgw5A9.jpg?1

Prior to speaking with Carl in regards to building his Z for more horsepower, we were discussing the option of providing an intake manifold to the VHR community that would be able to make power and have an aestheticly pleasing look to it.* Once Carl had decided that he was going to build the Z he wanted to be the first one to test the manifold and have it on his car, and the manifold can be seen in the photo below.

https://i.imgur.com/R7UzDNh.jpg?1

A vehicle is only as safe as it can be when it comes from the factory and with Carl going after the VHR quarter mile record he wanted to make sure that there was a cage in the vehicle to provide additional safety at the speeds that he would be doing.

https://i.imgur.com/ASJb8ds.jpg?1

https://i.imgur.com/CxRMiMP.jpg?1

The time had now come to get the vehicle back on the dyno and shoot for the 900 wheel goal that we were aiming for, and the results speak for themselves in the dyno graph below!

https://i.imgur.com/HZxfdGm.png?1



If you are interested in a build of this nature or have any questions about the products and services we offer, please contact us to via phone (704-839-0435), email (info@sohomotorsports.com), or social media!

A video with Brian from BrosFourrSpeed:

:yum: :leghump: :driving:

Absolute beast bro! Great build and numbers...wish you all were in Korea so I could just take it to you all


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great read then i got to the bottom and it was ruined by seeing that idiot's video :facepalm:

I agree! Hahaha that guys just a enthusiast...prob doesn’t know half of what’s going on with that Z and his facial expressions make you want to do really bad things lol


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i have many comments and jokes but i love the guys from SOHO....so i'll keep the thread clean and on topic :tiphat:

Clean build, really nice.

Stock brakes?

Also isn't the factory driveshaft carbon fiber, anyone know what its limits are?

Jeebus!

Way to go Nik, nice to see you guys pushing it.

Forgot to add the line lock part of this build :(

This is a custom setup that we built and plan on selling as a kit in the future :)

https://i.imgur.com/MKgnFi2.jpg?1

https://i.imgur.com/DDnCm6J.jpg?1

And a little video of it working :)

I'll take one of those please. Call you guys tomorrow.

Line lock kit... cool!

And wtg on the build. Do you guys also have numbers on pump? I take this is E85

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Now that is impressive! :drool:

Did owner take this to 1/4 mile yet? What did he make?

Last I heard he was back in the shop for the Top fuel hoop engine rebuild. Not sure if he ever went to the drag strip.

Rite, I am just trying to gauge if it is worth building my motor. I want to make a 9.5s car, but only if it can still be a comfortable street car and not too mental to be able to drive on the streets.

I heard BulliTT said that these cars chassis are not meant for over 700whp, it starts to become too violent and unbearable over that point. So if I can make a 9.5s Z with 700whp and still be a fairly comfortable street car, then I will go ahead with all the work required. Otherwise I will want to change to another modern platform that could do it more easily.

Just starting to do some research into this now, about to read your thread, but almighty 300+ pages.

With the right setup, 900whp is drivable. You will need at least 800whp to get in the 9's. Lots of stuff needs to be upgraded for the drag strip. The other question is, can you drive it? I know you have had issues before with traction. What scares some people does not scare others. It takes time in the seat to get comfortable. It's doable, the question is how bad do you want it?

BlueRanger made it into the 9's with an auto turbo car.

Pretty serious about it. I have some cash stowed away ready to throw at either building the Z more, so I can hit my goal of mid 9s,or sell Z and build new platform. I love the Z, but I don't want it to be to unusable if I can hit my target.

Also, if I am able to hit my goal, I would hope that the motor does not need a rebuild after each few passes, that would be a head ache to deal with too. So I want it to be able to handle the abuse, few pulls on a strip, then the rest on the streets on the weekends without worrying too much about the motor letting go.

Nice, thank you, I will try and reach out to this guy, check out his build etc.

Sell it. Only way you running 9.5 with 700whp is with a th400, powerglide of a Dct. And you have to hook like a bat out hel l. A guy in a 300zx ran 8.90 with a unopened motor making 780whp. But he cut a 1.2 60’ (th400).

Definitely the best idea, Zs aren't meant to be 9.5 second cars that you can daily aswell.. The GTR is there for that duty.

The money you will have invested into this platform to get to your mentioned goals both power wise, with reliability goals isn't gonna be worth it. The motor will be on the razors edge and something WILL go wrong eventually. Ask Spooler, who's went down this rabbit hole. Two things to note about if you choose to go down this path, be prepared to do A TON of research to educate yourself and plan ahead for the eventual next step. Two, and this is a big one, you WILL PAY for proprietary information. There are a handful of guys who have sunk $$$ into this goal, with "secret" information discovered/developed through their builds to get them somewhat "reliable". Cost of pushing the envelope and this information WILL NOT be given freely. You have to remember, this is a mass produced car with a mass produced engine. Can it be done, sure, there are a handful of guys who have gone into the "dark side of the moon", but most are lost to the void these days.

For your end goals, sell the car, get a R35 GTR (or whatever platform you deem appropriate for your goals AND can handle the abuse), kill tires and park it. Rinse and Repeat.

GR Supra is pretty easy to get to 9 seconds. Way easier platform to make power than the 370z. If you don't mind the looks/automatic. (manual coming next year?)

It's kind of comical how easy it is to make power on them. Folks are calling it the "next gtr" because it's filling that niche.

https://youtu.be/csp7zAWWvnk?t=640

But you'll need a 2020 model. Or be willing to reflash and swap in 2020 ECU somewhere in russia. iirc

All I can say is wait. One car is being put together now with an auto and he is a drag racer. Me, not so much at all. Wait and see how his car does. You will be dropping 50 to 60k for sure. Not going to lie, it is damn hard to get these things to live. The trans is the problem. Auto or manual. They both suck. Then, head lift. As was stated above, you will be fighting a loosing battle and developing the car on your own which is not cheap. I am trying to figure out what I am going to do myself. A VR38 swap is sounding good right now. The problem is I have to start over. Not sure if I am willing to do that.

Couldn’t agree with this more.

But if you want to attempt. Big big turbos, spray, and practice your 60’. Your tuner will be able to control torque better with bigger turbos and can use the spray to help Spool the turbo off the line and inbetween shifts. . Problem with 98% of anyone with these VQ’s is that they run to small
Of a turbo or turbos. Get yourself a 4.5 to 5 inch intercooler and let it eat. Cjm car ran high 9’s and could of gone faster. I believe the stock motor can handle 900whp ( for a short time) if you can manage the torque.

Stock motor handle 900whp? You have been hanging around Facebook too much.

Horsepower Doesn’t break motors. Running tiny turbos and making that kind of power isn’t the proper way to make 900whp. Will it last probably not long, but if you can make that power and manage torque and keep it around 550
To 600. It will
Be able to make
Several passes before letting go. Soho stock block last a year at 700ft/lbs before it
Shot a hole
Out the block.

Stock block and high HP.

Ok, so I gather from these comments that it's doable but not desirable on this chassis.


Ok fair enough I understand. It seems like if I wanted to go down the motor build path, I would need to rebuild and learn from each build several times. Something I was hoping and not looking forward to doing, more inclining me to another platform.

But what about the SOHO HB stage 2 longblock? If I were to purchase that one and keep my power at 800whp, would I still need to rebuild it over and over again if I were to do a few 1/4 mile passes, and some weekend highway runs everynow and then?


Yup this is the next platform I was looking at and already know a ton about this platform already. It seems like it will be so much more easier to reach my goal. Some people mention GTR, but unfortunately the R35 GTR has skyrocketed in price in my country, atleast 25-30K more than the Supra, the money I was going to use to upgrade the Supra if I were to get one. I mean I really still love my Z, and want to build it but it sounds like its a much harder path to reach my goal.

Soho stock block? Which one is that?

Soho stock block? Which one is that?[/QUOTE]

It’s in a thread here. It made 831whp and still working fine.

So its not the same thing as their HB Stage 2 Motor package is it?

No, this car lifted the heads and is getting the Stage 2 motor package.

Stock block, car has not lifted heads. He made his own TT Kit. Still runs to this day with no issues.

Let me drive it. I beat it won't run long.

So is this an admission of bad luck or bad driver? I kid, I kid. :rofl2:

I got skills. LOL I am not afraid to drive the heck out of it. I am definitely the one you don't tell to go break it if you can.

In all seriousness, if you drive the car as intended at those power levels a stock block won't last long. Yeah, you can tune the torque out of it but what is the point of that. That makes it slow. Great dyno number but a slow car.

Ah ok, yea this the motor that I would get if I keep my Z. But unfortunately it's $10K USD just for shipping to Australia.
Going to see if my mate can hook me up with his friend who has his own business and imports/exports products from US with his large containers via sea. He rekons he might be able to sort me out with shippong with that, if so then it's a done deal for me.

You may be better off letting someone from Australia build your engine. You know what needs to be done. But, you will be the Guinea pig on it which is no fun. You have several shops who build RB26's and other engines. You have talent local who should be able to help you.
It may be better for you to switch platforms.