I've only had my car for 1wk and like 5 days now. I'm seriously looking into forced induction on my Z, but my understanding is that you can't boost more than 9.2 PSI @ 420 or 30 something HP to the wheels safely. I don't want to have to go the route of doing an engine swap like the Top Secret peeps did with a VQ30 producing like 700+. I'm just intrigue as to how much money it take to be capable of producing over 500hp and what all will be needed in the process of building a super Z? TIA

 

seach around there is PLENTY of info around here... you will need forged pistons and rods ... rods for sure...

 

I've seen different compression when it comes to forged pistons, which compression ratio would be the best and would pistons and rods be the only thing i would need in order to produce over 500hp. The reason for this achivement is because i have a friend with a 3000GT VR4 and he has his internals rebuilt. I know he has to be over 500+ easy. Have any of yall installed the Technosquare ECU and whats the top speed you've achieve?

 

You will need the "Turbo" compression setup which drops compression to prevent detonation. Besides Pistons and Rods I am sure you would need forged Rod Bolts, upgraded clutch/flywheel, wheels to put down the power, cooling stuff (Radiator, Thermostat, etc), and GOOD TUNING!

 

It seems like the VQ35DE is not capable of producing over 445hp w/o it being safe on the motor or am i wrong? please tell me i'm wrong!

 

Would SGP racing be the best way for me to go since they have the most forge parts as in pistons, rods, titianuim retainers and heavy duty valve springs? There's a few more parts the have but I have no clue as to what i need to get for my motor to be strong enough with reinforcement and what specific configuration would i need from their product list to get me over 500hp? I want to do things right the first time and not have a whole bunch of trials and errors. TIA for the advice

 

I found the answer through SGP racing. There's a G35 coupe on there with like 585 rwhp on a dyno under customer cars.

 

You definitely need to upgrade to forged internals (pistons and rods) The compression ratio you choose depends on how you want your power served up. Lower CR (8.5:1) will allow more total boost and higher peak hp numbers at the expense of slower spool up and softer off-boost response. Medium CR (9.5:1) will give you less room for error than 8.5:1 on max HP applications but better spool up and off boost response. Stock CR will give you the most hp per psi but the least amount of room for error in the tuning and not as much peak HP capability. You could still achieve 500whp on stock CR though.

The APS tt kit is the bomb diggity right now but even it has it's limitations. It is only capable of about 550whp or 12 psi before the fuel system runs out of poop. I think the best option, if you aren't interested in going much over 500whp is to upgrade to forged stock CR internals and APS TT at around 10-11 psi. This way you don't have to upgrade the fuel system too.

Don't bother with the titanium retainers and heavy duty springs. You only need these for over 7100 rpm which is unnecessary with a TT. Just remember, Horsepower costs money and reliable HP costs even more. For example......

APS TT.......................................................... .......$7,500
installation................................................ ..........$2500
forged rods........................................................ .$1,000
Forged pistons....................................................$ 500
ARP head studs...................................................$495
ARP main studs...................................................$300
engine assembly and machining.........................$2000????
clutchmasters stage III.......................................$395
Damn good duno tune........................................$1000

500 whp done right the first time
with no need to worry about spitting parts
out of the block...................................................$15, 690

 

Your the man, thanks for all the advice peoples!

 

The reason Top Secret is using a VG30DETT is because of the aftermarket support that the VQ35DE did not have at the time they built it.

 

A C6 Z06 when they come out.

 

I have several friends with 500+ on their VQ35 engine and thats WITHOUT internal mods. Now getting all that done is definitely the way to go but they don't seem to have any problem putting down that power if you get it installed and Tuned by a reputtable place. Even then you need to be prepared incase that happens. I will have 500hp. Beginning of the year the install begins. So lets see what happens. The other cars have been beat and ran hard with no internal reinforcement and they are functioning fine so I will hope mine can survive as well. Hope that gives you some hope if you had any doubts.

 

I thought I remembered it being a VQ30DETT, and something about the bore/stroke ratio being more optimal for extended high-RPM usage in top speed runs

*edit* found the link: http://superstreetonline.com/feature...130_0406_350z/

 

I won't bother doing FI until my bottom end is forged. Do it right the 1st time.

 

Guess so, I thought it was the VG from the 300ZX TT, my mistake.

 

What do yall think is too much horsepower for a 350z to be having rolling around on the streets and still be somewhat street legal?

 

Why is it that the VQ35 internals seems to be weaker than the VQ30. I know a few maximas putting down over 500whp with stock internals. Don't get me wrong i would take z in a heart beat over a maxima. Just wondering

 

See my above post.

I have several friends with 500 or more HP on stock internals. I think its these tuner shops that don't know what their doing or people trying to macGyver their own setup. Get a good setup an you shall see. I'll find out first hand and if it breaks then lowering the compression and re-inforcing it shall be.

 

Well, look at my sig and see what I plan to do. I plan to keep it at 450 - 550rwhp and rwtq for daily driving. And to do 1/4 mile and etc., i'll turn the psi up... and have 650rwhp and rwtq.

 

I would love to see some dyno charts of this friends you have. I have never seen a stock motor VQ35 with over 500 Rwhp.