4-500hp built tread! - Page 2 - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Saico · 07-31-2011, 08:06 PM

Quote:

Originally Posted by stevecorrado88

Im running 22 psi with a gt3071r with stock internals and just 740cc injectors and tomei poncams with a pfc and it runs strong and a daily driver. i wouldnt be afraid to run 20-22 psi with your setup as long as you torque and make sure u do everything right problems tends to happen alot quicker when your running high hp.

i've had many high hp car, but there were honda' soo i was just a lil lost into the nissan world wich i'm new to, didn't know what oem equipment could handle, etc etc.

stevecorrado88 · 07-31-2011, 08:15 PM

You could deff run 400hp all day on 21 psi with stock internals. I feel like if u keep your setup basic the engines seem to run alot longer. Just remember your gonna be pushing alot of parts to there max so dont expect for it to last forever if u hit 500hp on a sr.

stevecorrado88 · 07-31-2011, 08:18 PM

Oh Yeah my turbo sucked the mesh out of my z32 maf so now im running a map sensor With the Power fc. Not sure if this happens alot but just alittle fyi ....

Saico · 07-31-2011, 08:22 PM

Quote:

Originally Posted by stevecorrado88

Oh Yeah my turbo sucked the mesh out of my z32 maf so now im running a map sensor With the Power fc. Not sure if this happens alot but just alittle fyi ....

depends where you put yout MAF i've heard thousands of stories ppl puting it 8-12inchs front the T.B, other putting it between filter and turbo (has it was on the oem setup) because i'll be running topmount obviously

codyace · 08-01-2011, 10:48 PM

Quote:

Originally Posted by Saico

depends where you put yout MAF i've heard thousands of stories ppl puting it 8-12inchs front the T.B, other putting it between filter and turbo (has it was on the oem setup) because i'll be running topmount obviously

If you want a MAF the only true way to run is is draw through (before turbo) if you are even considering blow through, you may as well run a MAP

TFD · 08-05-2011, 05:39 AM

@Cody: Quebec is in Canada... not Europe

* If you want to keep side feed you can run 4 bar fuelpressure on 740's. Should be enough for 500bhp (~450 whp).

* If you want to keep the VCT on the S14 DET you can look for TODA cams if HKS are in backorder. Got them in my S14 DET engine and run great.

What 3071 are you going to run? The T2 bottom mount seems to have a bad reputation of being restrictive and having problems for controling boost. No personal experience btw.

Good luck with the built.

OkiDori17 · 08-05-2011, 07:06 AM

740s at 4 bar wont work, yeah it may get you the 500hp you want but the injectors are wayy over their duty cycle. you dont want injectors to run more than 80% of their duty cycle, if you were to use 740s they would be at almost 90%..the safe way would be to switch to top feed and use the 1000s, that way its still in their safe duty cycle range and you have plenty of room for more power if you were to ever want it
top feed costs a lot more but big power = big $$$

codyace · 08-05-2011, 08:21 AM

Quote:

Originally Posted by TFD

@Cody: Quebec is in Canada... not Europe

LOL! I saw the word French and made a mistake there! LOL. And to think I've been to Montreal!

Quote:

Originally Posted by TFD

* If you want to keep the VCT on the S14 DET you can look for TODA cams if HKS are in backorder. Got them in my S14 DET engine and run great.

JWT offers VTC retention now as well

Quote:

Originally Posted by TFD

What 3071 are you going to run? The T2 bottom mount seems to have a bad reputation of being restrictive and having problems for controling boost. No personal experience btw.

Good luck with the built.

Most certainly bottom mount is the wrong way to go. Great point.

Quote:

Originally Posted by OkiDori17

740s at 4 bar wont work, yeah it may get you the 500hp you want but the injectors are wayy over their duty cycle. you dont want injectors to run more than 80% of their duty cycle, if you were to use 740s they would be at almost 90%..the safe way would be to switch to top feed and use the 1000s, that way its still in their safe duty cycle range and you have plenty of room for more power if you were to ever want it
top feed costs a lot more but big power = big $$$

If the 740cc injectors are designed well, then 4 bar will not be an issue with them.

In regard to duty cycle, that's very oldschool in relation to injector. If he was running an old Rochester/MSD style injector then I'd agree to keep duty cycle lower (specifically the 50lb MSD) but the 72 lbs and the newer RC injectors would be ok at higher duty cycle.

740's would be enough to support 500 whp, but would be close to full on. If they were run at 4 bar they would be more than enough.

However with all of this talk, if 500whp is the goal, looking into -6 line may not be a bad idea here, and even looking at an Aeromotive Stealth Pump or even a Bosch 044.

OkiDori17 · 08-05-2011, 10:32 AM

i was always taught to never go above 80% duty cycle but hey i learn something new everyday haha
but if he were to go with the RC 740s it would be about the same cost (if not more depending on where you get them) as the ID1000s
and like codyace was saying to get the -6 lines you would have to get a new rail anyway so might as well get a nice top feed.. =]

TFD · 08-05-2011, 10:46 AM

Quote:

Originally Posted by codyace

JWT offers VTC retention now as well

Damn it. Want S4's with vct

08-05-2011, 05:39 AM	#36
TFD Leaky Injector Join Date: Dec 2009 Location: Holland Age: 40 Posts: 124 Trader Rating: (4) Feedback Score: 4 reviews	@Cody: Quebec is in Canada... not Europe * If you want to keep side feed you can run 4 bar fuelpressure on 740's. Should be enough for 500bhp (~450 whp). * If you want to keep the VCT on the S14 DET you can look for TODA cams if HKS are in backorder. Got them in my S14 DET engine and run great. What 3071 are you going to run? The T2 bottom mount seems to have a bad reputation of being restrictive and having problems for controling boost. No personal experience btw. Good luck with the built. __________________ JDMstyle-Driftstyle-Dish-Stickerbomb-Stretch-Bye Bye Kitty...

08-05-2011, 07:06 AM	#37
OkiDori17 Zilvia Junkie Join Date: Jan 2011 Location: Columbus, GA Posts: 373 Trader Rating: (6) Feedback Score: 6 reviews	740s at 4 bar wont work, yeah it may get you the 500hp you want but the injectors are wayy over their duty cycle. you dont want injectors to run more than 80% of their duty cycle, if you were to use 740s they would be at almost 90%..the safe way would be to switch to top feed and use the 1000s, that way its still in their safe duty cycle range and you have plenty of room for more power if you were to ever want it top feed costs a lot more but big power = big $$$ __________________ '92 240sx w/'93 SR Blacktop /// '94 RX7 FD3S /// '11 370z RIP

08-05-2011, 10:32 AM	#39
OkiDori17 Zilvia Junkie Join Date: Jan 2011 Location: Columbus, GA Posts: 373 Trader Rating: (6) Feedback Score: 6 reviews	i was always taught to never go above 80% duty cycle but hey i learn something new everyday haha but if he were to go with the RC 740s it would be about the same cost (if not more depending on where you get them) as the ID1000s and like codyace was saying to get the -6 lines you would have to get a new rail anyway so might as well get a nice top feed.. =] __________________ '92 240sx w/'93 SR Blacktop /// '94 RX7 FD3S /// '11 370z RIP

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07-31-2011, 08:15 PM	#32
stevecorrado88 Zilvia Junkie Join Date: Jul 2008 Location: ny Age: 32 Posts: 421 Trader Rating: (9) Feedback Score: 9 reviews	You could deff run 400hp all day on 21 psi with stock internals. I feel like if u keep your setup basic the engines seem to run alot longer. Just remember your gonna be pushing alot of parts to there max so dont expect for it to last forever if u hit 500hp on a sr.

07-31-2011, 08:18 PM	#33
stevecorrado88 Zilvia Junkie Join Date: Jul 2008 Location: ny Age: 32 Posts: 421 Trader Rating: (9) Feedback Score: 9 reviews	Oh Yeah my turbo sucked the mesh out of my z32 maf so now im running a map sensor With the Power fc. Not sure if this happens alot but just alittle fyi ....