Nissan 370Z Forum  

JUN High Lift Exhaust Camshafts has be released

Hate to rain on anyones parade, you won't be making anywhere near 400whp without boost guys.

Go Back   Nissan 370Z Forum > Tech Area > Engine & Drivetrain

Like Tree5Likes

Reply
 
LinkBack Thread Tools Display Modes
Old 04-04-2012, 12:32 PM   #166 (permalink)
A True Z Fanatic
 
esfourteen's Avatar
 
Join Date: Mar 2010
Location: LI, NY
Posts: 1,375
Drives: 40th TT
Rep Power: 13
esfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud of
Send a message via AIM to esfourteen
Default

Hate to rain on anyones parade, you won't be making anywhere near 400whp without boost guys.
esfourteen is offline   Reply With Quote
Old 04-04-2012, 02:24 PM   #167 (permalink)
A True Z Fanatic
 
ANMVQ's Avatar
 
Join Date: Mar 2011
Location: Framingham MA
Posts: 2,732
Drives: 2014 Q50 AWD
Rep Power: 14
ANMVQ will become famous soon enoughANMVQ will become famous soon enough
Default

Wonder what these would do on a FI car..
__________________
14 Q50 AWD, ARK, ECUTEK (SEB), Takda,
ANMVQ is offline   Reply With Quote
Old 04-04-2012, 02:34 PM   #168 (permalink)
A True Z Fanatic
 
edub370's Avatar
 
Join Date: May 2011
Location: KCMO
Posts: 3,446
Drives: 09 370z S/T 6MT
Rep Power: 15
edub370 is a glorious beacon of lightedub370 is a glorious beacon of lightedub370 is a glorious beacon of lightedub370 is a glorious beacon of lightedub370 is a glorious beacon of lightedub370 is a glorious beacon of light
Default

Quote:
Originally Posted by SS_Firehawk View Post
The numbers given has me thinking they are basing this at the crank. either way, 450 hp at the crank is around 400whp. It's not out of the realm of possibility. With full boltons, including flywheel, these cars are getting close to or right around 400 on the crank. Add these exhaust cams and some VVEL adjustments, this seems within reason (maybe not financially).

I agree with the statement above. i just dont think 400 na hp will happen on these vq's
__________________
09 370Z ST 6MT//Injen CAI//CNT CBE//TP//TSW's//Swifts//Stillen lip//Whiteline sways
326whp/268tq
edub370 is offline   Reply With Quote
Old 04-04-2012, 02:46 PM   #169 (permalink)
Base Member
 
Join Date: Apr 2011
Location: farr north
Posts: 241
Drives: 11 BMW 335i 6AT
Rep Power: 9
indyn is on a distinguished road
Default

another reply...
Hi again

Nissan anounces VVEL range is up to 288 Deg 12mm lift.

But from our inspection, VVEL cannot reach 288 Deg.
Less than 450 Rear Wheel HP, 288 Deg is enough.

Around 400 RWHP, VVEL mapping was not effective.

Ignition timing map modification is much more effective.

We make the remapping devices and software from scratch.

From our experience, even 500 RWHP doesn't require any other additional piggy bags.
I will post the idling movie soon.

Almost the same as the stock one.

Any question appreciated.

Regards



2012/4/4 <xxxxx@gmail.com>
modifiying VVEL camshaft is not easy.
As far as I know, none of the EMS have the ability to map VVEL, we can log it however but no mapping.

So in order to get less than 450 WHP, you can do that using Nissan ECU VVEL mappings? would you mind elaborating what Engine management system you use for that?

All my exhaust components are non-stock, so I am assuming that going with Exhaust camshaft should get me more HP.

Is the IDLE rpm affected with exhaust camshaft?
indyn is offline   Reply With Quote
Old 04-04-2012, 03:06 PM   #170 (permalink)
Track Member
 
'10Anamoly's Avatar
 
Join Date: May 2010
Location: GA
Posts: 882
Drives: 2010 370Z BS M6
Rep Power: 11
'10Anamoly is a glorious beacon of light'10Anamoly is a glorious beacon of light'10Anamoly is a glorious beacon of light'10Anamoly is a glorious beacon of light'10Anamoly is a glorious beacon of light
Default

Glad to know we dont need any piggy bags.
__________________
2013 Ford Mustang GT

374rwhp, 360rwtq SAE / GT500 Axle-Backs / Brembo Pack / Track Pack / Recaros / 6spd
'10Anamoly is offline   Reply With Quote
Old 04-04-2012, 03:15 PM   #171 (permalink)
The370Z.com Sponsor
 
370Ztune's Avatar
 
Join Date: Jan 2009
Location: Los Angeles, CA
Posts: 2,477
Drives: Z34 370Z
Rep Power: 42
370Ztune has a reputation beyond repute370Ztune has a reputation beyond repute370Ztune has a reputation beyond repute370Ztune has a reputation beyond repute370Ztune has a reputation beyond repute370Ztune has a reputation beyond repute370Ztune has a reputation beyond repute370Ztune has a reputation beyond repute370Ztune has a reputation beyond repute370Ztune has a reputation beyond repute370Ztune has a reputation beyond repute
Default

Quote:
Originally Posted by esfourteen View Post
Hate to rain on anyones parade, you won't be making anywhere near 400whp without boost guys.
A ridiculously high-compression, high-revving, well-built motor can push this kind of power, but nobody should expect an engine like that to work in a street car.
370Ztune is offline   Reply With Quote
Old 04-04-2012, 03:40 PM   #172 (permalink)
A True Z Fanatic
 
esfourteen's Avatar
 
Join Date: Mar 2010
Location: LI, NY
Posts: 1,375
Drives: 40th TT
Rep Power: 13
esfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud ofesfourteen has much to be proud of
Send a message via AIM to esfourteen
Default

Quote:
Originally Posted by 370Ztune View Post
A ridiculously high-compression, high-revving, well-built motor can push this kind of power, but nobody should expect an engine like that to work in a street car.
I'm talking about people expecting VVEL magic and an exhaust cam to make 400whp
esfourteen is offline   Reply With Quote
Old 04-04-2012, 03:58 PM   #173 (permalink)
Base Member
 
Join Date: Apr 2011
Location: farr north
Posts: 241
Drives: 11 BMW 335i 6AT
Rep Power: 9
indyn is on a distinguished road
Default

I don't think its just VVEL, exhaust cam making 400 whp. Seems to be a combination of other mods and tuning on top of it.
their stock cars are 340 HP at crankcase
305 whp on Bosch dyno
350 whp with exhaust mods
360 whp tuning for above including AFR, IGN timing
378 whp probably with exhaust camshafts
once you have control over VVEL at higher deg and lift for good range of powerband, maybe this can help in tuning the Ignition timing more, netting CLOSE to 400 whp which is 22 whp more than the last step.
Maybe I'm wrong
indyn is offline   Reply With Quote
Old 04-04-2012, 04:07 PM   #174 (permalink)
Track Member
 
'10Anamoly's Avatar
 
Join Date: May 2010
Location: GA
Posts: 882
Drives: 2010 370Z BS M6
Rep Power: 11
'10Anamoly is a glorious beacon of light'10Anamoly is a glorious beacon of light'10Anamoly is a glorious beacon of light'10Anamoly is a glorious beacon of light'10Anamoly is a glorious beacon of light
Default

I am not picky... 300 rwtq and 350 rwhp would be all I need for the next five years at least.
__________________
2013 Ford Mustang GT

374rwhp, 360rwtq SAE / GT500 Axle-Backs / Brembo Pack / Track Pack / Recaros / 6spd
'10Anamoly is offline   Reply With Quote
Old 04-04-2012, 04:18 PM   #175 (permalink)
Premium Member
 
SS_Firehawk's Avatar
 
Join Date: Oct 2011
Location: Tampa
Posts: 4,070
Drives: 13' Magma Red Nismo
Rep Power: 7057
SS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond reputeSS_Firehawk has a reputation beyond repute
Default

All I'm saying is that the numbers quoted isn't absolutely outrageous. With guys here making 50-60 hp from bolt ons and drive train mods, these engines are making good power without getting into internals. Do I think it will make 400 whp with cams and a VVEL mod? Most likely no. Would I like it to? Hell yeah. In the end it's going to take someone with some stones to test it out. Keep this going, I like agreat debate
__________________
Old Car:GTM TSC'd 550whp / 410lbft tq @ 11.88PSI
New Car: Under Construction

SS_Firehawk is offline   Reply With Quote
Old 04-08-2012, 02:40 AM   #176 (permalink)
Enthusiast Member
 
Valentino's Avatar
 
Join Date: Jan 2009
Location: RaceTrack
Posts: 349
Drives: SOLD 09,370z,M6
Rep Power: 301
Valentino has a reputation beyond reputeValentino has a reputation beyond reputeValentino has a reputation beyond reputeValentino has a reputation beyond reputeValentino has a reputation beyond reputeValentino has a reputation beyond reputeValentino has a reputation beyond reputeValentino has a reputation beyond reputeValentino has a reputation beyond reputeValentino has a reputation beyond reputeValentino has a reputation beyond repute
Default

Theatrically speaking an NA 6 cylinder 3.7L should make 400HP with no problems.

There is already production NA 6 cylinder engine that makes over 400HP. one is an H6/3.6L,and an H6/3.8L

And they do have an H6/3.4L that produces 350HP and 287 lb.-ft.
UNKNOWN_370 likes this.
__________________
Lou Fusz Nissan | KW V3 | SPL rear camber and toe bolt | OS Giken LSD | Nismo Diff cover | Engine Oil cooler | F.I. TDX Cat Back 18" Resonators | F.I. Resonated Test Pipes | Injen cold air intake | COBB AccessPORT | JWT Clutch Flywheel |
Valentino is offline   Reply With Quote
Old 04-08-2012, 01:27 PM   #177 (permalink)
Enthusiast Member
 
ChipsWithDips's Avatar
 
Join Date: Mar 2011
Location: Austin, TX
Posts: 279
Drives: '11 Gunmetal 370Z MT
Rep Power: 9
ChipsWithDips has a spectacular aura aboutChipsWithDips has a spectacular aura about
Default

Yeah, the HP/liter on these motors from the factory is not amazingly impressive, seems like there is still plenty of room to improve. I mean look at something like a F20C motor used in honda S2000. A 2 liter that makes about 240HP, so 120hp/liter. If a 3.7 motor could accomplish the same efficiency, it would be 444HP.
ChipsWithDips is offline   Reply With Quote
Old 04-09-2012, 08:54 AM   #178 (permalink)
Track Member
 
Join Date: Jan 2011
Location: lafitte, la
Posts: 698
Drives: 40th anniversary
Rep Power: 11
LafitteZ will become famous soon enough
Default

It gives Nissan the room to upgrade without redesigning everything and it fuels aftermarket. Id be willing to bet most aftermarket company's pay Nissan for specs and what not. Yea I think a 400 horse power 370 is doable but I guess well see. I'm sure somebody's going to do it.
LafitteZ is offline   Reply With Quote
Old 04-09-2012, 09:51 AM   #179 (permalink)
Track Member
 
'10Anamoly's Avatar
 
Join Date: May 2010
Location: GA
Posts: 882
Drives: 2010 370Z BS M6
Rep Power: 11
'10Anamoly is a glorious beacon of light'10Anamoly is a glorious beacon of light'10Anamoly is a glorious beacon of light'10Anamoly is a glorious beacon of light'10Anamoly is a glorious beacon of light
Default

Anyone have flow numbers on the stock heads? Cams and some porting (cosworth?) with a nice tune could probably pull 350whp on full bolt ons.
__________________
2013 Ford Mustang GT

374rwhp, 360rwtq SAE / GT500 Axle-Backs / Brembo Pack / Track Pack / Recaros / 6spd
'10Anamoly is offline   Reply With Quote
Old 04-09-2012, 07:26 PM   #180 (permalink)
A True Z Fanatic
 
Join Date: Dec 2009
Location: 03350 Australia
Posts: 1,377
Drives: 09 Nissan 370Z M6
Rep Power: 6362
BGTV8 has a reputation beyond reputeBGTV8 has a reputation beyond reputeBGTV8 has a reputation beyond reputeBGTV8 has a reputation beyond reputeBGTV8 has a reputation beyond reputeBGTV8 has a reputation beyond reputeBGTV8 has a reputation beyond reputeBGTV8 has a reputation beyond reputeBGTV8 has a reputation beyond reputeBGTV8 has a reputation beyond reputeBGTV8 has a reputation beyond repute
Default

The flow limit is actually the OEM inlet manifold. Without replacing the manifold, we are air-limited to around 420hp.

I have some VQ30 heads (primarily because the CR with these heads is 12.05:1 with std pistons) and 33mm dia inlets and these flow 288cfm @ 12.7mm lift on our flow-bench. According to my rough rule-of-thumb, this equates to circa 445hp and that assumes that the inlet manifold constraints have been resolved.

If we can get to 15mm of lift, we get 300cfm, which gets us to 460hp, but getting beyond 460 without going larger in valve diameter seems impossible (and 600 thou life is a stretch as we need bigger valve pockes in the pistons, and that drops the CR so I'm beginning to believe that half-inch lift is about it - and that means ~440/450 hp.

Getting to 500hp will require head-work - a lot of expensive flow-bench time, together with a bespoke inlet manifold (and 52mm throttle bodies such on manifold). I've already had some aluminium plates machined up to suit my heads and making a manifold out of 51mm tube is relatively simple, but still lots of work and research to go ... with the objective of getting to ~325 cfm which will go very close to supporting 500hp.

This will be a balls-out race engine and not for a road-able car ... for that, it will be 1/10th the cost by going s/c or tt.

RB

Last edited by BGTV8; 04-09-2012 at 07:31 PM.
BGTV8 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Just Released! Power Craft Hybrid Exhaust 370Ztune Intake/Exhaust 26 12-28-2015 12:52 PM
@@Tanabe Medalion Touring exhaust and Y-Pipe Released! Sound Clip Inside!@@ corner3garage Exhaust/Intake 398 02-19-2015 06:43 PM
MCR Exhaust Pricing Released 370Ztune 370Ztune 3 03-24-2010 07:11 PM
Central 20 ECU Update and Exhaust manifold released BanningZ Engine & Drivetrain 12 07-13-2009 12:51 PM
Amuse - Full Exhaust Lineup Released - Titanium GT Motoring Intake/Exhaust 1 05-13-2009 10:51 PM


All times are GMT -5. The time now is 04:41 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2