Hello Everyone! So i am working on an FI vq35de build for my 350z and am currently building the rotating assembly. My power goals are 500-600 on LOW BOOST ( 10-14 psi ) and closer to 700-800 on HIGH BOOST ( 20-30ish psi ). My question is as follows : will eagle rods be sufficient enough to support 20 psi of boost or should i get wiseco rods instead. If anyone has information on how much boost eagle rods can withstand RELIABLY that information would be much appreciated. Thank you!

 

If you ask me Eagle Rods shouldnt be used for anything above 600hp. Guys run them higher and harder but if you ever have them in your hand they dont have the heft that stronger (Pauter, CP, Manley Turbo Tuff, etc.) have.

You will need quite the support to reach 700hp to 800hp…

 

700-800 is a massive undertaking and I wouldn't cut corners anywhere. A wiseco boostline rod is the choice between the two listed by a long shot.

 

I don't know of a reliable build on here that is running 700-800hp, but if there is you should mimic what they did.

 

Tim / Old man z

 

Also, this will never get done because OP thinks he can get 500-600 on 5-8psi

 

So how many pounds of boost would get me to 500 - 600 hp? genuinely curious as i am new to the cars and engine building.

 

Any other rods you would recommend. Also i just watched your cooler worx shifter YT video from like 2 years ago. love your build

 

500-600hp at the crank maybe close to 1 Bar.
@bealljk would know best.
You have something against Wiseco or you don't like the price?
The boostline rods are the best out there and that's what Soho uses for their engines, from their advertising they can handle 2000hp.
you do realize you are gonna need drag radials in order to hook with those power levels right?

 

I dont think people ‘truly’ understand what it takes to make anything over 600hp on this platform. Further, what it takes to keep the 600hp to 800hp up and going, the maintenance, the repairs… the internet, facebook reels, insta all makes it look like its something you do over the weekend, tune on Monday and your out on the streets on Tuesday …

But its nice to know the platform is still relevant!

 

Right, I got into it with someone on Reddit because he was like "the LS has more potential than the VQ"
No **** Sherlock, it has 2 more cylinders and higher displacement, the truth is power is just a byproduct of displacement and air in/out... most engines have a cap to reliable power that seems to be tied to displacement more than anything.
Low end (100hp), high end (200hp), per liter.
Go passed this number and reliability becomes an issue.
Nothing magical about that, they said I'm wrong and stated that Audi's 2.0T can make a lot of power. Yes the EA888 can make decent power but at around 400whp it is quite susceptible to crank walk.
I've done the research as it's the engine in my GTI, but at the end of the day 2 liters, 200hp x 2 = 400hp.
On this platform the number seems to be between 100-150/liter even built. Yes, you can make more but how long will it last driving it hard?

 

The people that claim LS swapping is the next jesus are (usually) the same people who have never built a thing… It’s 6 of 1 / half dozen of the other … much is already in place with a turbo’d VQ. And maybe it’s comproable costs between the two and that’s if everything goes right … I’ve only seen a few LS swapped z33 and they all looked 3 out of 10 quality-wise, hacked together, things misaligned, dash torn to **** / wires everywhere, 1/2 the lights on the speedo on, half the speedo no working, etc … but to each their own…

You could go one step further and say air-density in / air density-out … secret to the B series and K series … healthy amount of boost, healthy amount of RPMs, etc…

One of my LS-swapped buddy can only rev to like 5500 or 6k rpm … and yea, the low end torque is nice but by the time he gets moving he has to shift … sorta embarrassing

 

i do realize i will need radials. im aware of the fact that i will not be able to build this engine over night or maybe within the next year. the only thing i really care about is that it is done right which is why i am taking my time to learn as much as i can from the people who have done it before me. i appreciate your questions though. thank you!

 

i agree with everything you are saying. This is not a weekend project. this is a multi year project becausd the reality of it is, there is no end to a build. i expect this build to take me a long time considering this is my first engine build. But thats okay because i would rather take my time to do it right then rush it and mess everything up. I appreciate your thoughts and please if you have any sincere advice i would love to hear it

 

I'll ask what I asked on reddit, what is the end goal, how fast do you want to be?
Or is this one of those ego IG build that will just post a dyno and then break and never leave the garage?
What is the purpose of the car?
The more we know the better info we can supply you with.

 

Everything I say is sincere (incase it didnt come off that way) …

but were on your side … start a build thread and keep it updated. There are some very brilliant minds on this forum and if you take the time to show the group what you are up to then they will keep an eye on your thread and get you where you need to be.

 

The thing to remember is boost is just a measure of resistance/friction in the motor. Different setups will require different boost levels to hit a certain power figure, so it all depends.

On my setup, I was able to hit ~540whp around 11psi (13psi peak), and made 607whp at 13psi (15psi peak). This was with some boost taper of ~2psi, but peak power numbers were at the levels I just listed.

Not saying this is the case here, but I do feel like social media has made it seem like hitting these kinds of numbers is cheap, easy, and reliable. Usually it's, cheap, fast, reliable (pick 2).

 

So i have had this car for the last 6 years and it has been my daily. back when i got it i was a high school kid who wanted a good looking car and i beat the **** out of it.i was never into cars until i met my now wife whos family is all into cars. it gave me a surge of motivation and understanding that this is what i want to do with my life. i currently am employed at a dealership as a technician and for the last year and a half this has been my passion and will continue to be for decades to come. my end goal with this car ( power wise ) is 800whp. I want to give this car the life it deserves and the one i deprived it from for the first 5 years of owning it. this will most definetly Not be a " garage IG car ". This car is everything to me. It has helped me through some tough times as im sure a lot of peoples cars have. I want this to be a portfolio of me to show what i can do when i put my mind to it. I want this car to show its only the begining.

 

No i believe you were coming off as sincere. Sorry if how i worded what i said kinda sounded rude. but i will definetly start a build thread and keep it updated. I appreciate all the advice and words man!

 

Those are some pretty sick numbers man! And i agree. Social media makes things out to be a certain way but in reality its the opposite. I definetly choose fast and reliable. i know it wont be cheap which is why i know this project will take me a long time. But im in for the long haul!