Just to clear up any questions could you list all the parts used again. Like which exhaust(test pipes,catback), plenum(which spacer if one), which engine parts(i remember somewhere you ended up with manley valves), lightweight flywheel or stock. I know this might sound like a odd request. I am not doubting your results I just want to know which parts made this possible, kind of like a buyers guide.
By the way this build had to be cheaper than that aussie's build although that was awesome as well. I have a proflow ported throttle body I am not using if you want to try it i'll pay shipping down to you just to see if it makes a difference. and just for all the popcharger fans did you try one?

 

Bad ***, I'm really glad to hear how well this is going. Congrats, you da man.

 

Jeremy,

Can you post an overlay of the pre/post TS headers? I would like to see what it did to the system response.

Thanks,
Tony

 

Nice Jeremy!!

 

great work dude!!! cant wait to see what this monster makes after ported plenum neck, TB, cams and better headers. good look!!!

 

yes i will overlay the pre post headers, some of it might have come more from the turbulance side of things more than the flow due to the headers.


with the ported heads, the stock headers really didnt match up well where the TS headers had a larger opening. also figuring out that the car made the most power at 11.8 to 12.1 to 1 helped out a bit


i really dont know if i would give the headers much credit. i think that there are still some weird issues going on with possibly cam timing causing some very consistent dips in places that i can get out.


let me do some overlays for ya.

thanks again tony, i havent received those headers yet but i had a loaner TS set to borrow.

also, "1cockyZ" if you send me your paypal address, i will send you some money for the shipping, i would like to try that throttle body out but i am sure i will need to match the plenum neck and the piping there for it to work at all.


thanks everyone, let me get some graphs.


JE custom lightweight pistons
eagle rods
manley valves
supertech springs
ported heads
JWT S1 cams
everything lightened, balanced and blueprinted
ACT prolite flywheel and 6 puck unsprung clutch
Crawford plenum
UR pulleys
TS headers (temporary)
test pipes
Utec set up speed density

i really think this power could be acheived on 12 to 1 compression, or pretty close. then you could drive it on pump gas. the gains from 12.5 to 1 to 15 to 1 arent very great. i think i am going to do an actual compression test to see what it is. i havent done that yet. maybe its lower and i am overkilling it with C16 that i am running. i figure its better safe than sorry. i am running it 12 to 1 AFR with about 3 degrees more timing low and 6 up high...

 

here are two graphs with overlayed on my best before headers and after headers. you can see some weird stuff happening under 4000 that can not be tuned out. its just weird with the headers, some kind of turbulence happening.


i have the speed and the rpms based dynosheets here. there is a blip at high rpms so thats why the tq jumps so high on the graphs.

but you can get the idea.

 

I suspect the wavyness of the graph is proably normal for these headers.

I saw the same thing when I tested them but in my case it was even worse (probably because stock cats were connected to them).

But overall it was clearly helpfull in your case.

 

When I move to FL for good you'll be seeing a lot of my car

 

Jeremy, are you running open headers? If so, that could cause issues with shorty headers because the collector is so close to the ports.

 

Nice work JT.

I am glad your in Florida Congrats on the build. I can't wait till you get the cams in and get to the track. Should be some nice times. Keep it up JT.

pm sent

 

Great Power for all motor, this car has to be deep in the 12s, so this would be a milestone for the 350z. Nice work!!!

once I save some money, you will be my mechanic!!

 

Very nice. Congrats on breaking the 300hp barrier with n/a! :-)

 

yeah, the shorty headers will be gone soon, long tube with a nice collector up next.



the car went 12.3 at 111 with the 292 hp. i am just running open test pipes right now, i am going to put a y pipe on for some backpressure and see what that does next time i have it on the dyno.


thanks everyone

 

Awesome work Jeremy, cams + porting of the manifold and TB entrance will yield a lot more ponies.

 

Nice work.

 

Hey Jeremy, your car is less or real close to 3000lbs right? For some reason i want to say 2800 but i could have been dreaming.

 

nice work...I have seem Stillen SC's make less power than this...hehe...nice job.

 

But also

 

Jermey! great job. I'm glad someone as finally balled up to build a NA monster. Now this would all be wonderful if this can be ran on 91 octane. If so, i might just give you a ring =)