JUN exhaust cam shaft finally arrived

VQStryker · 04-21-2012, 11:09 AM

Quote:

Originally Posted by zuperman 370

thanx guys, hope they really yeild good gains im expecting at least 15hp pluse according to JUN

Then I will DEFFINATLY be in if its 15hp for N/A cars, we will see.

gofaster87 · 04-21-2012, 11:12 AM

Im not yet familiar with the Z heads/Vvel yet but if you're going to do cams you might as well do head work. Working the flow of the heads is the secret to hp on na engines. Im surprised this isnt discussed more often in this forum. I know people have mentioned that the vvel tuning hasnt been cracked yet. I do not understand why this isnt a priority for the shops with the resources. Ive head work done on most of my cars including those with forced induction and its a night and day difference. Some Ive sourced out and some work I did myself.

MaDMaXX · 04-21-2012, 12:02 PM

Did you do headwork on the 370 though? by all accounts, the 350 and 370 heads are already there.

gofaster87 · 04-21-2012, 12:06 PM

Quote:

Originally Posted by MaDMaXX

Did you do headwork on the 370 though? by all accounts, the 350 and 370 heads are already there.

How do you know they're already there? Did you do any bench flow comparisons? Ive never seen any flow charts for the Z heads. All I see is a lot of he said/she said. Its something to look into. Unless a shop has done these test I dont just take anyones word for it.

MaDMaXX · 04-21-2012, 12:54 PM

"...by all accounts"

I'm pretty certain i've seen Motordyne flow testing the heads and finding nothing.

smokejr · 04-21-2012, 05:24 PM

Did Motordyne do a before and after test ?? or is this a visual verification ??

MaDMaXX · 04-22-2012, 12:10 AM

It was flowbenched.

Nissanboy · 04-22-2012, 12:56 AM

Quote:

Originally Posted by gofaster87

Im not yet familiar with the Z heads/Vvel yet but if you're going to do cams you might as well do head work. Working the flow of the heads is the secret to hp on na engines. Im surprised this isnt discussed more often in this forum. I know people have mentioned that the vvel tuning hasnt been cracked yet. I do not understand why this isnt a priority for the shops with the resources. Ive head work done on most of my cars including those with forced induction and its a night and day difference. Some Ive sourced out and some work I did myself.

Jordo! · 04-23-2012, 04:37 PM

Can you do even do head work on the VVEL valves without screwing up the calibration? I haven't heard of anyone messing with it yet...

VQStryker · 04-23-2012, 05:43 PM

Quote:

Originally Posted by Jordo!

Can you do even do head work on the VVEL valves without screwing up the calibration? I haven't heard of anyone messing with it yet...

I was talking to the owner at track forged in Oregon about my winter build (mentioned the JUN exhaust cams to him) and he mentioned porting the heads and that they make a huge difference which I understand. He didn't mention anything about the VVEL having an issue but we both were "brainstorming" about the idea of how the VVEL motors would react to it. Hopefully someone does it before me so if it goes bad I can back out of the idea but if they don't then I will be the first :/ oh well, someone has to find out eventually.

370Z JT · 04-26-2012, 08:14 PM

You got an install date yet?

babbagandu · 04-27-2012, 07:25 PM

OP what's the status bro?

G37sHKS · 04-28-2012, 05:37 AM

He's still looking for a better quote..

zuperman 370 · 04-28-2012, 06:45 AM

Hey guys install still not done yet, have a couple of things to do to the car first plus installer is busy these days with the drag season will keep u Guys posted

Valentino · 04-28-2012, 08:38 AM

Quote:

Originally Posted by zuperman 370

Hey guys install still not done yet, have a couple of things to do to the car first plus installer is busy these days with the drag season will keep u Guys posted

OPS... Don't tell me you went with SMS

good luck anyway

04-23-2012, 04:37 PM	#129 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 417	Can you do even do head work on the VVEL valves without screwing up the calibration? I haven't heard of anyone messing with it yet... __________________ Enjoy it. Destroy it.

04-26-2012, 08:14 PM	#131 (permalink)
370Z JT A True Z Fanatic Join Date: Jan 2010 Location: United States Posts: 2,905 Drives: 370Z PW 7AT Rep Power: 378	You got an install date yet? __________________ Click for My Journal Top Secret \| EVO-R \| Fujimura Auto \| Shine Auto \| Seibon \| MRWorks \| Swift \| SPC \| SSR \| UpRev \| Project Kics \| NST \| Titek \| Eibach \| Nismo \| Whiteline \| Quaife \| Invidia \| Fly1 \| CF Element \| Carbon Signal

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04-21-2012, 11:12 AM	#122 (permalink)
gofaster87 Base Member Join Date: Mar 2012 Location: Las Vegas Posts: 57 Drives: 2011 Nismo 370Z Rep Power: 13	Im not yet familiar with the Z heads/Vvel yet but if you're going to do cams you might as well do head work. Working the flow of the heads is the secret to hp on na engines. Im surprised this isnt discussed more often in this forum. I know people have mentioned that the vvel tuning hasnt been cracked yet. I do not understand why this isnt a priority for the shops with the resources. Ive head work done on most of my cars including those with forced induction and its a night and day difference. Some Ive sourced out and some work I did myself.

04-21-2012, 12:02 PM	#123 (permalink)
MaDMaXX Enthusiast Member Join Date: Jan 2012 Location: Oregon from England Posts: 292 Drives: 350z Rep Power: 13	Did you do headwork on the 370 though? by all accounts, the 350 and 370 heads are already there.

04-21-2012, 12:54 PM	#125 (permalink)
MaDMaXX Enthusiast Member Join Date: Jan 2012 Location: Oregon from England Posts: 292 Drives: 350z Rep Power: 13	"...by all accounts" I'm pretty certain i've seen Motordyne flow testing the heads and finding nothing.

04-21-2012, 05:24 PM	#126 (permalink)
smokejr Base Member Join Date: Aug 2010 Location: Oregon Posts: 64 Drives: mb mt Rep Power: 14	Did Motordyne do a before and after test ?? or is this a visual verification ??

04-22-2012, 12:10 AM	#127 (permalink)
MaDMaXX Enthusiast Member Join Date: Jan 2012 Location: Oregon from England Posts: 292 Drives: 350z Rep Power: 13	It was flowbenched.

04-27-2012, 07:25 PM	#132 (permalink)
babbagandu Enthusiast Member Join Date: Mar 2011 Location: US Posts: 349 Drives: 09 Nismo Rep Power: 14	OP what's the status bro?

04-28-2012, 05:37 AM	#133 (permalink)
G37sHKS A True Z Fanatic Join Date: Feb 2010 Location: Dubai Posts: 1,183 Drives: 09 G37S Coupe 7AT Rep Power: 20	He's still looking for a better quote..

04-28-2012, 06:45 AM	#134 (permalink)
zuperman 370 Track Member Join Date: Dec 2009 Location: BAHRAIN Posts: 944 Drives: 370z 2010 at blue Rep Power: 16	Hey guys install still not done yet, have a couple of things to do to the car first plus installer is busy these days with the drag season will keep u Guys posted