[Build Thread] -- Journey to 700+ WHP [Supercharger]

[JARblue]

Originally Posted by "Z"en

Our stock engine is sturdy. With 93-above octane, proper tuning, and regular maintenance, you should be safe for the boost your having.

.... "should" being the operative word

["Z"en]

Originally Posted by JARblue

.... "should" being the operative word

And his reply just reminds me of he's running auto, so better safe than sorry.

[Rusty]

Originally Posted by cupcakez

I am really happy to hear that honestly. I mean I've seen plenty of stock engines hold up that are dailies that run 600 - 700 rwhp safely. And even driven hard more often than not too.

Especially that 831rwhp stock engine..lol. Gives me tons of hope.

I'll be using e85, having proper tuning, and I will definitely have oil changes every 3k miles or less for regular maintenance up keep. So it sounds like after the engines in by wed of next week (before new years is adels goal) I should be good to go lol.

Let's hope my luck doesnt get worse

If you are talking about Spooler. He just lifted a head yesterday at 17 lbs of boost. So now his engine will be coming back apart. That's on a built block.

[Martijn_b]

"All i ask for is 700 rwhp on a stock block to be reliable and beaten on a daily basis"

Something doesnt add up here. Am I the only one seeing it? Or the only one not knowing about 700rwhp stock block cars driving reliable for say, 3 years?

You cant keep doing this to yourself. Especially not if you're doing it on borrowed money (just my personal opinion). Why dont you just settle for reliability and call it a day at a nice solid 550-600 hp?

^comes from a good heart - I just want you to enjoy the car and not worry all the time about stuff breaking and pouring more money into it





Sent from my SM-G973F using Tapatalk

[Hotrodz]

Originally Posted by Martijn_b

"All i ask for is 700 rwhp on a stock block to be reliable and beaten on a daily basis"

Something doesnt add up here. Am I the only one seeing it? Or the only one not knowing about 700rwhp stock block cars driving reliable for say, 3 years?

You cant keep doing this to yourself. Especially not if you're doing it on borrowed money (just my personal opinion). Why dont you just settle for reliability and call it a day at a nice solid 550-600 hp?

^comes from a good heart - I just want you to enjoy the car and not worry all the time about stuff breaking and pouring more money into it

I don't know anybody that is doing 700whp on a stock block as a dd. Mine ran for five years between 500 and 600whp. I track it the last three years of its life. If you run at 700whp on a stock block you will keep on getting what you keep getting.

[redondoaveb]

He's not going to get to 700whp. Probably mid 600's but the torque will be below 500ft.lbs and it's a sc'd set up so the power isn't going to hit hard like a turbo car so the motor should be fine. It's his auto trans that will probably cause him problems.

He could do like I did and install a wastegate and ebc. Then he can run it at low boost as a daily and only use high boost when the need arises.

[cupcakez]

Originally Posted by JARblue

I hope you are still enjoying the adventure, at least...

Haha it's the journey that counts. I definitely am enjoying it. Way way way better than me sitting in my room playing games all day and never getting out of the house xD

I much prefer the adventure I've been going through!

[cupcakez]

Originally Posted by "Z"en

If your going to dd your Z, I'd not suggest going overboard (pushing stock motor beyond 650whp) no matter what (for longevity sake). Just my two cents.

Likely I wont ever be above 650rwhp. I am going to be running an air filter all the time rather than a turbo guard so my psi will be capped at 13.

[JARblue]

Originally Posted by cupcakez

Haha it's the journey that counts. I definitely am enjoying it. Way way way better than me sitting in my room playing games all day and never getting out of the house xD

I much prefer the adventure I've been going through!

Cheers

To me, it's odd how you dismiss some people's advice so quickly and seem to take other's as gospel. But to always be looking forward and positive about things is something you should be commended for. Especially at such a young age. GL to you and your Z

[redondoaveb]

Originally Posted by cupcakez

Likely I wont ever be above 650rwhp. I am going to be running an air filter all the time rather than a turbo guard so my psi will be capped at 13.

Your boost is going to be capped because you're running flex fuel and won't be able to add timing on 91 octane like if you were running e85 full time. Hence another good reason for the wastegate and ebc.

["Z"en]

Originally Posted by cupcakez

Likely I wont ever be above 650rwhp. I am going to be running an air filter all the time rather than a turbo guard so my psi will be capped at 13.

And I'd not feel comfortable with having over 400 ft-lbs wtq on stock auto. Again, better safe than sorry. Also my two cents.

[TopgunZ]

You repeatedly state you want a safe daily driver yet you are still asking for numbers that are far above the average SC build. You need to choose what you want. Most guys are perfectly happy with 500whp and 400wtq. The guys that come into this forum are a vast majority of the guys that like to push it to the limits, including yourself. So your thought process is skewed. If you can't be happy with a safe "average" build then you are rolling the dice. If your willing to pay to play then go ahead and give her hell. Just don't hang your head low when something doesn't go your way.

[cupcakez]

Originally Posted by TopgunZ

You repeatedly state you want a safe daily driver yet you are still asking for numbers that are far above the average SC build. You need to choose what you want. Most guys are perfectly happy with 500whp and 400wtq. The guys that come into this forum are a vast majority of the guys that like to push it to the limits, including yourself. So your thought process is skewed. If you can't be happy with a safe "average" build then you are rolling the dice. If your willing to pay to play then go ahead and give her hell. Just don't hang your head low when something doesn't go your way.

No you're right - and you have a good point. I can't have A and B when A and B don't naturally go together. With that being said, I will say this:
- Whatever my car outputs after I get it back sometime this week and after the re-scheduling of the dyno day in mid January is what I will be happy with.

I think you're right. When I felt that E85 for the first time in combination with the current SC setup I have, I was really enjoying it and thought that I would be happy with whatever final result the dyno day in mid-january will leave me with.

If that means I'm rolling the dice then I'll take responsibility for it and go with it.

I've made a mental resolve that if this breaks again by some chance, then I will just move on, lol -- and either sell the entire car for what it is at that point for a really good deal to someone else or I will just part it out and sell the parts individually, pay things off then start from square 1 again with a different vehicle (this time I will do minimal modifications to it and if I do modifications, will do heaviER research before doing so) xD

Either way though, if I were to do it all over again, I would have to say no because I like all of the good things that came out with the bad events I put myself through!

[cupcakez]

So my car's FIRST DYNO DAY finally occurred today.

Huge Credit to: Eugene (My amazing tuner) + Adel (My amazing mechanic) for making this happen. I honestly don't know where I'd be without both of them in this journey!

The Good, the Bad, the Neutral Summary

o WHP: 442
o WTQ: 374
o P.S.I: 12.5
o RPM: 6200

o AFR on log: 12.2
o Corrected AFR: 8.5:1

o Supercharger Head Unit: V-3 Ti Centrifugal Self Lubricating Head Unit
o Crank Pulley Diameter: 5.75, Stock Crank Pulley
o Pulley Setup: 3.0" Direct SC Pulley || 3.2" Jackshaft SC Pulley || 2.87 (9psi) Jackshaft Serpentine Pulley || Stock SC Idler Pulley ||
o Engine: Stock Q50 Engine @ ~19k miles
o Transmission: Stock 7AT from 2015 370z Base Model @ ~54k miles

o Injectors: 1050x ID
o Fuel Type: E85, but more accurately, about E75 at the time
o Fuel System: || CJM S1-E || Zeitronix Ethanol Analyzer Kit || 525 Walbro ||

o Tuner: Eugene @ ECUTEK
o Mechanic: Adel (Only known person in CA who owns a G37 with Husam's GTR Twin Turbos)

o Location: Concord, CA
o Dyno Machine Owned By: The Racer's Line
o Temperature: 51 - 54 degrees Farenheit

Eugene limited the RPM's through the tune at 6200 because he found that the 1050x ID's on E85 (More accurately, about E75 content at the time) was maxing out well past 90% duty cycle if going past 6200 RPM's.

The car actually made 14 psi in the upper RPM's with the setup it currently has, but at the same time we ran into the issue of fuel running out in the upper RPM's so that's why what happened today and what the results is, is what it is, for safety reasons!

This is a problem, but a good problem for once! Just something I need to upgrade in the future if I want to have the car reach it's full potential with the last 1300 RPM's to play around with. The lower RPMs will stay the same regardless, so that's done and done!

Apparently the coupler on the supercharger headunit blew off during a pull so Adel had to come in and save the day to fix that issue, which he did.

We ended up using more time than planned for on the dyno machine only because of the mishap with the coupler and all that, but overall, I am extremely happy to have a working vehicle and to have a fairly fast vehicle for what it is at the moment, also knowing that it is way more capable and has more potential to be unlocked and played with if, and when, the injectors change from the current 1050x ID to 1300x ID.

I had a few options to work around the running out of fuel issue:
(1) Cap the rev limit through Eugene's tuning a tad above 6200 RPM and make the car as best as it can.

(2) Keep the 7500 RPM limit but take away timing, but actually this option is no good too because you can't lower timing if running out of fuel, as that won't help. The fuel needs to be at the right spots!

(3) Upgrade to better injectors and send it, but that is obviously not going to happen because of obvious reasons (on the clock for dyno time, don't have 1300 IDs on me or over there, and the install would take time as well, so this option was obviously not going to happen!

So I talked to a lot of respectable people and most said they would cap the rev limit and pretty much tune it to the best possible at that point, which is what we ended up doing and came up with these numbers!


Anyone have thoughts? comments? I think overall it went really well and just knowing that I have a vehicle with more potential is more than enough for me, haha.

For now, I will enjoy the car as is, take way better care of it once I get it back next week, and ... start being financially responsible once I get it back for the year of 2020!

So far, I think it's a great start for me for the year 2020 in terms of my vehicle, considering all the issues that it had in the last 2 years!

[jchammond]

Good Job; graph has steady climb & potential 550whp in it