VVEL control unlocked

370Z Purist · 10-12-2012, 10:26 PM

I don't care so much about gains as responsiveness.

wifedrivenZ · 10-13-2012, 12:37 AM

I don't know how to answer that about responsiveness due to the fact I have not driven my car in 6 months then took it to the shop to get some parts put on. If anyone with an SC Z would like a ride and then they could judge.

LukasC · 10-13-2012, 03:01 PM

Anyone NA have plans of doing this?

370ZNISMO#704 · 10-13-2012, 03:04 PM

In for dyno sheets.

FPenvy · 10-13-2012, 03:30 PM

Quote:

Originally Posted by LukasC

Anyone NA have plans of doing this?

I do once more research is done

LukasC · 10-13-2012, 05:36 PM

Talked to a local shop they have a z lined up that is NA to do some testing on! Ill let u guys know when i hear from them

Jordo! · 10-13-2012, 06:49 PM

Quote:

Originally Posted by LukasC

Talked to a local shop they have a z lined up that is NA to do some testing on! Ill let u guys know when i hear from them

Very cool.

See if you can get some details such as where valve overlap was changed and where lift was changed in the rev range.

Also, are these bolt-on modded Z's or bone stock? Breathing and exhaust mods will almost certainly make a difference.

LukasC · 10-13-2012, 06:58 PM

Quote:

Originally Posted by Jordo!

Very cool.

See if you can get some details such as where valve overlap was changed and where lift was changed in the rev range.

Also, are these bolt-on modded Z's or bone stock? Breathing and exhaust mods will almost certainly make a difference.

Not quite sure what kind of z he is messing with im sure it more than stock at least. The cars that go into this shop usually are not ur average delearship cars haha but idk for certain. We shall see and i will try and get those details once he gets with me

Nissanboy · 10-13-2012, 07:24 PM

I don't see how this could improve power on NA applications as the intake lift is already at it's maximum point (goes from 2mm to 11m lift) because of the eccentric cam being only so big on the VVEL ladder assembly and the overlap being precise as the rpms go up. I could see some very impressive gains on FI applications as everyone has already stated. Just like to give out my point of view

Jordo! · 10-13-2012, 09:58 PM

Quote:

Originally Posted by Nissanboy

I don't see how this could improve power on NA applications as the intake lift is already at it's maximum point (goes from 2mm to 11m lift) because of the eccentric cam being only so big on the VVEL ladder assembly and the overlap being precise as the rpms go up. I could see some very impressive gains on FI applications as everyone has already stated. Just like to give out my point of view

I seem to recall an old chart from another forum that showed there was more lift possible...

I'll see if I can find the image and post it.

EDIT:

Here...

Rusty · 10-14-2012, 12:36 AM

So that chart is saying max is about .500" lift. But it's only using up to .450" lift. HMMMMMM You know how much duration there is?

BigT · 10-16-2012, 11:59 AM

Has anyone thought of our valvesprings? Can they handle any more lift, duration, and romp rate?

Nixlimited · 10-16-2012, 12:41 PM

Quote:

Originally Posted by BigT

Has anyone thought of our valvesprings? Can they handle any more lift, duration, and romp rate?

I always thought the issue with springs was the decompression side rather than the compression side (e.g. float).

Rusty · 10-16-2012, 12:52 PM

Also coil bind.

Jordo! · 10-16-2012, 02:44 PM

All empirical questions -- hopefully uprev has at least one or two motors they can risk destroying to find the limits...

10-12-2012, 10:26 PM	#166 (permalink)
370Z Purist A True Z Fanatic Join Date: Jun 2009 Location: Zion, Illinois Posts: 1,873 Drives: '09 370Z-T BS M6 Rep Power: 19	I don't care so much about gains as responsiveness. __________________ -Phil "Since one of my brake light bulbs just went out, the forum told me that my piston rings are about to blow."

10-13-2012, 12:37 AM	#167 (permalink)
wifedrivenZ Base Member Join Date: May 2010 Location: Victorville CA Posts: 69 Drives: 370Z 40th Rep Power: 15	I don't know how to answer that about responsiveness due to the fact I have not driven my car in 6 months then took it to the shop to get some parts put on. If anyone with an SC Z would like a ride and then they could judge. __________________ Stillen Exhaust, Stillen Supercharger, Stillen Oil cooler, Stillen Headers, Test pipes, 928 Impeller, 9 lbs pulley running 12lbs of boost, Custom tune from National Speed. 415WHP 345TQ

10-13-2012, 03:04 PM	#169 (permalink)
370ZNISMO#704 Enthusiast Member Join Date: Nov 2010 Location: Seattle Posts: 466 Drives: Nismo10,EgH22,TSX04 Rep Power: 15	In for dyno sheets. __________________ 2010NISMO•305.9whp 250tq Osirus•STANCE GR+•and Camber & Toe bars•KICS R 20mm•VOSSEN CV3 20"-10.5x4•Stillen GENIII•AAM S-Line Nimso mid-pipe•CarbonSignal Sponsored car•EVOR F1mirrors•NST short shifter•Zspeed Nismo under tray.

10-14-2012, 12:36 AM	#176 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,190 Drives: 2011 Nismo GM 6M Rep Power: 2684437	So that chart is saying max is about .500" lift. But it's only using up to .450" lift. HMMMMMM You know how much duration there is? __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

10-16-2012, 12:52 PM	#179 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,190 Drives: 2011 Nismo GM 6M Rep Power: 2684437	Also coil bind. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

10-13-2012, 03:01 PM	#168 (permalink)
LukasC Track Member Join Date: Apr 2011 Location: San Antonio, Tx Posts: 664 Drives: 11 Stillen SC Bl M6 Rep Power: 17	Anyone NA have plans of doing this?

10-13-2012, 05:36 PM	#171 (permalink)
LukasC Track Member Join Date: Apr 2011 Location: San Antonio, Tx Posts: 664 Drives: 11 Stillen SC Bl M6 Rep Power: 17	Talked to a local shop they have a z lined up that is NA to do some testing on! Ill let u guys know when i hear from them

10-13-2012, 07:24 PM	#174 (permalink)
Nissanboy Enthusiast Member Join Date: Dec 2010 Location: H-Town Posts: 378 Drives: Too slow Rep Power: 14	I don't see how this could improve power on NA applications as the intake lift is already at it's maximum point (goes from 2mm to 11m lift) because of the eccentric cam being only so big on the VVEL ladder assembly and the overlap being precise as the rpms go up. I could see some very impressive gains on FI applications as everyone has already stated. Just like to give out my point of view

10-16-2012, 11:59 AM	#177 (permalink)
BigT Enthusiast Member Join Date: Jan 2012 Location: NJ Posts: 469 Drives: 98 2g DSM Rep Power: 13	Has anyone thought of our valvesprings? Can they handle any more lift, duration, and romp rate?

10-16-2012, 02:44 PM	#180 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	All empirical questions -- hopefully uprev has at least one or two motors they can risk destroying to find the limits... __________________ Enjoy it. Destroy it.

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