FP Exclusive 1st: The VQ35HR Dissected

Sharif@Forged · 04-17-2007, 09:07 AM

Jeremy's 2007 350Z has been spending a lot of quality time at Forged Peformance. After installing his Greddy EvoTT exhaust, test pipes, and making 265whp (Dyno Dynamics)without any tuning (+17whp), it was time for the next step.

Jeremy agreed to allow our technicians to remove his engine and transmission for a thorough inspection. We are hoping he'll allow us to completely take the darn thing down to the rotating assembly components, but that might have to wait.

Aside from the obvious differences between the VQ35DE and the VQ35HR, we found some interesting things, in no particular order...just things that we observed

1) After-market turbo and NA exhaust manfiolds will physically bolt up to the heads.
2) Cam Position Sensors are mounted to the valve covers, perpendicular to the engine.
3) Crank position sensor is located at the 2 o'clock position, instead of the 7 o'clock position
4) Valve Covers and Coil Packs are larger. The coil packs look similar to the design of the Titan coil packs
5) It appears the engineers clearanced certain things for turbo....foundation for the GT-R??
6) Cooling system is completely resdesigned. The main coolant return pipe runs through the center of the block "V".
7) Twin Knock Sensors
8) Main ECU connectors are twin style, and completely different (current PnP systems will not work, but hardwiring will be possible)
8) Main ECU engine harness SIGNIFICANTLY streamlined, better integrated, and less cluttered....we like this setup!
9) Transmission is completely upgraded
10) Clutch fork has been deleted. Now uses an internal slave cylinder mounted on the input shaft, which directly actuates the TO bearing. Very cool...seen this before on late model FWD cars, and is becoming more common these days.
11) Semi-equal length manifolds...not the best, but better than last year's model.

These are just our preliminary findings and we'll post more info as we get it.

Rogue350z · 04-17-2007, 09:12 AM

Very nice! Thanks for the update.

J

widebody350 · 04-17-2007, 09:15 AM

Out of curiosity, will previous year's headers work with the HR?

Sharif@Forged · 04-17-2007, 10:19 AM

Quote:

Originally Posted by widebody350

Out of curiosity, will previous year's headers work with the HR?

They will not. The length is different, and there are different clearance issues.

jonnylaw · 04-17-2007, 10:20 AM

Is this the same engine that is in the 07 g35 sport sedan? (albeit a different transmission) please excuse my noobness.

ZLadie2000 · 04-17-2007, 10:22 AM

Thanks for the info...was waiting for all this. Is it still true that pretty much only interchangeable mods are exhaust? And that's it...? What about lighter flywheel? pulleys? etc. can we use anything else from previous models Z's to make more power?

Also do you have any idea when a UTEC may be available for the 07?

With only test pipes and exhaust...how much more do you think you can pull out of it with a UTEC(once it's available)? 10-15 hp?

Wired 24/7 · 04-17-2007, 10:40 AM

Quote:

Originally Posted by ZLadie2000

With only test pipes and exhaust...how much more do you think you can pull out of it with a UTEC(once it's available)? 10-15 hp?

I believe that will strongly depend on the 07 stock ECU, and its response to changing breathing bolt-ons.

Also, most likely the ECU will be running to optimize emissions rather than power (that is to say, near 14.7 AFR). If you find that "magic AFR" for the 07 you will make more power for sure.

bboypuertoroc · 04-17-2007, 10:41 AM

Nice finds. Curious about the strength of the internals... but I guess you guys won't be tearing that far into it just yet.

ZLadie2000 · 04-17-2007, 10:43 AM

yeah Jeremy (Performance Factory) tried hooking up a Cipher to my 07 and it didnt allow him to control timing (new ECM and software)... he wanted to pull it 2 degress for an easy 10rwhp.

Wired 24/7 · 04-17-2007, 10:44 AM

Quote:

Originally Posted by ZLadie2000

yeah Jeremy (Performance Factory) tried hooking up a Cipher to my 07 and it didnt allow him to control timing (new ECM and software)... he wanted to pull it 2 degress for an easy 10rwhp.

Most likely the 07 ECU has been reworked to, among other things, control dual MAFs and TBs

phunk · 04-17-2007, 12:33 PM

can you tell if the 07 engine harness will interface with the chassis correctly if someone wanted to do a HR conversion to an older Z?

hiz-n-herz · 04-17-2007, 01:12 PM

Thanks!

Got any pics of the exhaust manifolds without heat shields? wondering if aftermarket headers will flow better for NA...

6894kevin · 04-17-2007, 01:56 PM

Can't wait to see the progress!

BTW you guy's are nuts,

07 has probably like a few hunderd miles on it and you have already pulled the heart

KEEP IT UP and please keep us updated

Cheers

Kevin

foochdawg · 04-17-2007, 02:13 PM

I want to see this thing down to the pistons sitting on a table haha. I LOVE engine porn. I can't wait to see more pictures...the second I get an email saying a new post I am in here in a second looking for more pics.

Michael@Forged · 04-17-2007, 02:31 PM

the car had a little over 700 i think danya saide 741miles

as for the ECM the ECM is now three sperete connectors and a lot more pins. most likely ready for the GT-R for controlling boost and the diveretor valves. like sharif said before some the coolant piping on the side of the motor are missing or much smaller and now run through the V of the block. getting ready for the charge pipes from the turbos of the GT-R. im thinking something like a greddy TT kit but having the charge pipes coming up higher than the valve covers.

i dont think Utec will be making anything for this ECU for a while due to the face that there are much more controls and sensors on this new motor. not to mention the varible llift of the VQ37HR in the new G coupe.

A HR swap will be quie costly due to the different CAN systems of the different years. coming from a dealership the CAN system is the hardest problem we face when doing a abnormal engine swap. you would have to swap the entire wiring harness of the car and all ECMs and switches since some if not most are now controled with different types of signals.

it going to some time till someone figures out how to control and trick the stock ecm due to the twin TB and MAF.

I dont think the ECM is tuned for emissions they have dont that for years now, with the cold rich start up. as for power with a Utec tune it all depends on how well that stock AFR and timing can be changed to make more power. other than that with out some breathing mods not much is goinng to be able to change.

Enron Exec · 04-17-2007, 02:31 PM

Quote:

Originally Posted by phunk

can you tell if the 07 engine harness will interface with the chassis correctly if someone wanted to do a HR conversion to an older Z?

lol the million dollar question.

bboypuertoroc · 04-17-2007, 02:39 PM

Quote:

Originally Posted by hiz-n-herz

Thanks!

Got any pics of the exhaust manifolds without heat shields? wondering if aftermarket headers will flow better for NA...

http://www.my350z.com/forum/showpost...&postcount=177

Mazinger Z · 04-17-2007, 02:50 PM

Aya...want the HR...must get 07...do you think Nissan will replace my Revup with the HR with the reason of oil consumption? lol

350Z_LEE · 04-17-2007, 02:51 PM

I was checking out your motor. It makes a nice piece for the office :]

Diesel350 · 04-17-2007, 02:57 PM

Can you elaborate on the Transmission??

04-17-2007, 09:07 AM	#1
Sharif@Forged Sponsor Forged Performance Join Date: Dec 2003 Location: Marietta, GA Posts: 13,599 iTrader: (91)	FP Exclusive 1st: The VQ35HR Dissected Jeremy's 2007 350Z has been spending a lot of quality time at Forged Peformance. After installing his Greddy EvoTT exhaust, test pipes, and making 265whp (Dyno Dynamics)without any tuning (+17whp), it was time for the next step. Jeremy agreed to allow our technicians to remove his engine and transmission for a thorough inspection. We are hoping he'll allow us to completely take the darn thing down to the rotating assembly components, but that might have to wait. Aside from the obvious differences between the VQ35DE and the VQ35HR, we found some interesting things, in no particular order...just things that we observed 1) After-market turbo and NA exhaust manfiolds will physically bolt up to the heads. 2) Cam Position Sensors are mounted to the valve covers, perpendicular to the engine. 3) Crank position sensor is located at the 2 o'clock position, instead of the 7 o'clock position 4) Valve Covers and Coil Packs are larger. The coil packs look similar to the design of the Titan coil packs 5) It appears the engineers clearanced certain things for turbo....foundation for the GT-R?? 6) Cooling system is completely resdesigned. The main coolant return pipe runs through the center of the block "V". 7) Twin Knock Sensors 8) Main ECU connectors are twin style, and completely different (current PnP systems will not work, but hardwiring will be possible) 8) Main ECU engine harness SIGNIFICANTLY streamlined, better integrated, and less cluttered....we like this setup! 9) Transmission is completely upgraded 10) Clutch fork has been deleted. Now uses an internal slave cylinder mounted on the input shaft, which directly actuates the TO bearing. Very cool...seen this before on late model FWD cars, and is becoming more common these days. 11) Semi-equal length manifolds...not the best, but better than last year's model. These are just our preliminary findings and we'll post more info as we get it. __________________ Redline Time Attack Class Winner!!! HKS Pro Dealer (Largest Volk Dealer in the Country), Certified: Fcon, Haltech, MoTec, AEM\| www.forgedperformance.com \| Sharif@ForgedPerformance.com

04-17-2007, 09:12 AM	#2
Rogue350z !!HR TT!! Join Date: May 2002 Location: Atlanta Posts: 877 iTrader: (10)	Very nice! Thanks for the update. J __________________ Forged Performance 2007 Top Secret Wide Body Roadster 515RWHP @ 11.5PSI on Sharif's Dyno Dynamics // 540RWHP Dyno Jet [size="1"]Sponsors:

04-17-2007, 10:41 AM	#8
bboypuertoroc Registered User Join Date: Feb 2005 Location: Get out my way pimpin, HI Posts: 13,072 iTrader: (4)	Nice finds. Curious about the strength of the internals... but I guess you guys won't be tearing that far into it just yet. __________________ Evo IX GSR - FPRed, 30psi... will rape you in your sleep on Christmas. *Team DNF*

04-17-2007, 12:33 PM	#11
phunk CJ Motorsports Join Date: Apr 2003 Location: West Chicago, IL Posts: 3,507 iTrader: (16)	can you tell if the 07 engine harness will interface with the chassis correctly if someone wanted to do a HR conversion to an older Z? __________________ Charles @ CJM - www.cj-motorsports.com - #1 VQ Fuel Systems & Intake Manifolds Contact: sales@cj-motorsports.com / cell: 630..270..5351 2003 350z (Built TT Since 04); 2009 370z (Base + Sport)

04-17-2007, 01:12 PM	#12
hiz-n-herz Registered User Join Date: Apr 2006 Location: SF South Bay area Posts: 1,189 iTrader: (11)	Thanks! Got any pics of the exhaust manifolds without heat shields? wondering if aftermarket headers will flow better for NA... __________________ Hiz: 07 GT 6MT.. REDLINE-AME-BASSANI.Herz:06 Silverstone!Motordyne,Bassani,Unichip,sportmax, NismoV1 sides, Nismo JDMV1 spoiler, mastergrade.

04-17-2007, 09:15 AM	#3
widebody350 Registered User Join Date: Apr 2006 Location: Virginia Posts: 1,994 iTrader: (1)	Out of curiosity, will previous year's headers work with the HR?

04-17-2007, 10:20 AM	#5
jonnylaw Registered User Join Date: May 2006 Location: Meifumado Posts: 1,605 iTrader: (3)	Is this the same engine that is in the 07 g35 sport sedan? (albeit a different transmission) please excuse my noobness.

04-17-2007, 10:22 AM	#6
ZLadie2000 Banned Join Date: Jul 2006 Location: Orlando, FL Posts: 1,413 iTrader: (12)	Thanks for the info...was waiting for all this. Is it still true that pretty much only interchangeable mods are exhaust? And that's it...? What about lighter flywheel? pulleys? etc. can we use anything else from previous models Z's to make more power? Also do you have any idea when a UTEC may be available for the 07? With only test pipes and exhaust...how much more do you think you can pull out of it with a UTEC(once it's available)? 10-15 hp?

04-17-2007, 10:43 AM	#9
ZLadie2000 Banned Join Date: Jul 2006 Location: Orlando, FL Posts: 1,413 iTrader: (12)	yeah Jeremy (Performance Factory) tried hooking up a Cipher to my 07 and it didnt allow him to control timing (new ECM and software)... he wanted to pull it 2 degress for an easy 10rwhp.

04-17-2007, 01:56 PM	#13
6894kevin Registered User Join Date: Jul 2006 Location: Greenville SC Posts: 1,257 iTrader: (1)	Can't wait to see the progress! BTW you guy's are nuts, 07 has probably like a few hunderd miles on it and you have already pulled the heart KEEP IT UP and please keep us updated Cheers Kevin

04-17-2007, 02:13 PM	#14
foochdawg Registered User Join Date: Feb 2003 Location: Pittsburgh, PA Posts: 504 iTrader: (1)	I want to see this thing down to the pistons sitting on a table haha. I LOVE engine porn. I can't wait to see more pictures...the second I get an email saying a new post I am in here in a second looking for more pics.

04-17-2007, 02:31 PM	#15
Michael@Forged Sponsor Forged Performance Join Date: Mar 2007 Location: Alpharetta, Ga. Posts: 23 iTrader: (0)	the car had a little over 700 i think danya saide 741miles as for the ECM the ECM is now three sperete connectors and a lot more pins. most likely ready for the GT-R for controlling boost and the diveretor valves. like sharif said before some the coolant piping on the side of the motor are missing or much smaller and now run through the V of the block. getting ready for the charge pipes from the turbos of the GT-R. im thinking something like a greddy TT kit but having the charge pipes coming up higher than the valve covers. i dont think Utec will be making anything for this ECU for a while due to the face that there are much more controls and sensors on this new motor. not to mention the varible llift of the VQ37HR in the new G coupe. A HR swap will be quie costly due to the different CAN systems of the different years. coming from a dealership the CAN system is the hardest problem we face when doing a abnormal engine swap. you would have to swap the entire wiring harness of the car and all ECMs and switches since some if not most are now controled with different types of signals. it going to some time till someone figures out how to control and trick the stock ecm due to the twin TB and MAF. I dont think the ECM is tuned for emissions they have dont that for years now, with the cold rich start up. as for power with a Utec tune it all depends on how well that stock AFR and timing can be changed to make more power. other than that with out some breathing mods not much is goinng to be able to change.

04-17-2007, 02:50 PM	#18
Mazinger Z Registered User Join Date: Dec 2005 Location: Los Angeles Posts: 7,174 iTrader: (48)	Aya...want the HR...must get 07...do you think Nissan will replace my Revup with the HR with the reason of oil consumption? lol __________________ *35th_SS 6MT* Volk - Borla - Nismo - Motordyne - Hotchkis - Tokico - Fiber Images - Evo R - Data Systems - Fast Intentions - Alpine - Kicker - Infinity *"Kids Shift Gentle"*

04-17-2007, 02:51 PM	#19
350Z_LEE Registered User Join Date: Jun 2006 Location: New Orleans, Louisiana Posts: 2,125 iTrader: (9)	I was checking out your motor. It makes a nice piece for the office :] __________________ 05 PPW 350z GReddy TT Built and tuned by Forged Performance

04-17-2007, 02:57 PM	#20
Diesel350 Registered User Join Date: May 2003 Location: Tampa Posts: 6,686 iTrader: (2)	Can you elaborate on the Transmission?? __________________ 2006 Silver Alloy 6mt- Mods-Motordyne MREV Plus, HKS Dual Hi-Power (Ti) Exhaust, Popcharger

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