cam gears for VQ37

indyn · 01-26-2012, 02:43 PM

is this new? Jim Wolf Technology website
might be able to squeeze out little more power out of VQ37's.

XwChriswX · 01-26-2012, 03:50 PM

Those are for a VQ35 and more specifically a VQ35DE motor. (2003-05 350Z's) Won't work with our VQ37.

indyn · 01-27-2012, 08:45 AM

says it fits g37 and 370z

HKYStormFront · 01-27-2012, 09:01 AM

i guess they give you more adjustability than our stock cam phasers (which do adjust using oil pressure i believe). also, this would probably seriously throw off the VVEL system if i had to guess. i'd be interested to see some "bench testing" of these on a VQ37VHR

ChipsWithDips · 01-27-2012, 11:16 AM

VVEL (and IVT) is only on the intake cams.

Our exhaust cams have no adjustability from the factory. These gears are for the exhaust cams, so they would provide some extra tunability that is not possible otherwise.

Megan370z · 01-27-2012, 11:29 AM

I would be tempted to try those !

phunk · 01-27-2012, 01:36 PM

you may be tempted until you found out how much work it will take to make a simple adjustment!! i dont think this is a realistic option for the VHR since changing the adjustment to dial it in is more time and labor than its worth for anyone but a full time race team.

HKYStormFront · 01-27-2012, 05:14 PM

i agree with this^ you're talking about a good 6-8 hours of labor to make a small change in timing

Quote:

Originally Posted by ChipsWithDips

VVEL (and IVT) is only on the intake cams.

Our exhaust cams have no adjustability from the factory. These gears are for the exhaust cams, so they would provide some extra tunability that is not possible otherwise.

pretty sure both cams have cam phasers... the VQ35DE "revup" and the VQ35HR did...

ChipsWithDips · 01-27-2012, 05:23 PM

Quote:

Originally Posted by HKYStormFront

i agree with this^ you're talking about a good 6-8 hours of labor to make a small change in timing

pretty sure both cams have cam phasers... the VQ35DE "revup" and the VQ35HR did...

Yes thats true those motors did have exhaust phasing. But VHR isn't those motors. It's all in the service manual, and can also be seen if look at a disassembled VHR head.

Notice how the intake valve open and close times have a wide range, and the exhaust valve has 0 range?

No clue why nissan did it this way, maybe they couldn't make it all fit in there with VVEL + exhaust phasing, maybe they are saving it so they can have more power in the next generation engine, maybe cost, who knows.

HKYStormFront · 01-27-2012, 05:25 PM

my mistake, could have sworn it had cam phasers on the exhaust cams...

Megan370z · 01-27-2012, 06:28 PM

Quote:

Originally Posted by phunk

you may be tempted until you found out how much work it will take to make a simple adjustment!! i dont think this is a realistic option for the VHR since changing the adjustment to dial it in is more time and labor than its worth for anyone but a full time race team.

having done 95% of all my mods and labour & tuning
a few 6-8hours job isnt too bad .. ! hehe

but yeah I would need to study and see how doing it properly ! then start when I feel ready

indyn · 01-30-2012, 12:07 PM

didn't some of the members with FI and headers complain about no power gains because of exhaust cam and VVEL overlaps, these might help in getting back that power.

But here's a thought, aftermarket intake cams already exist for the previous gen VQ's, why not make the VVEL run to the similar the specs of those cams??

HKYStormFront · 01-30-2012, 01:35 PM

i looked under cwis' hood yesterday and sure enough, no cam phasers on the exhaust cam. sorry about the confusion. i'm guessing that since the cam phasing is done with oil pressure that along with VVEL, it was too much heat for reliability? not sure on that one. obviously the VVEL system's gains are more important than the limited ability of one cam phaser

theDreamer · 01-30-2012, 04:37 PM

Quote:

Originally Posted by indyn

didn't some of the members with FI and headers complain about no power gains because of exhaust cam and VVEL overlaps, these might help in getting back that power.

But here's a thought, aftermarket intake cams already exist for the previous gen VQ's, why not make the VVEL run to the similar the specs of those cams??

The lose of power was the top end, basically the top 500RPM, the rest of the power band showed an increase.
Now, will this give back that little boost on the top end? I am not sure, I have not done enough research on VVEL and how the system controls and modulates it control.

XwChriswX · 01-30-2012, 10:48 PM

Quote:

Originally Posted by indyn

didn't some of the members with FI and headers complain about no power gains because of exhaust cam and VVEL overlaps, these might help in getting back that power.

But here's a thought, aftermarket intake cams already exist for the previous gen VQ's, why not make the VVEL run to the similar the specs of those cams??

FI Headers lean out your A/F pre-tune so people lose power. But after being tuned to that mod, you regain your power back.

01-26-2012, 02:43 PM	#1 (permalink)
indyn Base Member Join Date: Apr 2011 Location: farr north Posts: 241 Drives: 11 BMW 335i 6AT Rep Power: 14	cam gears for VQ37 is this new? Jim Wolf Technology website might be able to squeeze out little more power out of VQ37's.

01-26-2012, 03:50 PM	#2 (permalink)
XwChriswX WFLYIDNNE Join Date: Jul 2009 Location: In The Fastlane Posts: 50,648 Drives: 02 GDB WRX Rep Power: 451	Those are for a VQ35 and more specifically a VQ35DE motor. (2003-05 350Z's) Won't work with our VQ37. __________________ Bonnie - Stage 2, Audio build coming this fall! R.I.P. Abby 3/29/10 - 3/30/14

01-27-2012, 09:01 AM	#4 (permalink)
HKYStormFront A True Z Fanatic Join Date: Apr 2009 Location: Greer, SC Posts: 14,954 Drives: 06 Frontier SE 6spd Rep Power: 52	i guess they give you more adjustability than our stock cam phasers (which do adjust using oil pressure i believe). also, this would probably seriously throw off the VVEL system if i had to guess. i'd be interested to see some "bench testing" of these on a VQ37VHR __________________ Patrick // 06 Frontier 6spd Nismosis // Mods: Uprev Tuned @ Z1 Motorsports: 257whp & 292 ft lbs 09 Pontiac G8 GXP // M6 // Sunroof // Tint... For now

01-27-2012, 11:29 AM	#6 (permalink)
Megan370z A True Z Fanatic Join Date: Oct 2009 Location: Canada Posts: 1,156 Drives: 370z Rep Power: 23	I would be tempted to try those ! __________________ Megan Journal Click Me ....................One Man Team Motorsport Click Me

01-27-2012, 01:36 PM	#7 (permalink)
phunk A True Z Fanatic Join Date: Mar 2009 Location: Chicago Posts: 3,655 Drives: 370 Rep Power: 944523	you may be tempted until you found out how much work it will take to make a simple adjustment!! i dont think this is a realistic option for the VHR since changing the adjustment to dial it in is more time and labor than its worth for anyone but a full time race team. __________________ Charles @ CJ Motorsports : Website \| Facebook \| Instagram \| YouTube Home of the 9 second, stock longblock, stock drivetrain 6MT 370z. 9.91 @ 142mph

01-27-2012, 08:45 AM	#3 (permalink)
indyn Base Member Join Date: Apr 2011 Location: farr north Posts: 241 Drives: 11 BMW 335i 6AT Rep Power: 14	says it fits g37 and 370z

01-27-2012, 11:16 AM	#5 (permalink)
ChipsWithDips Enthusiast Member Join Date: Mar 2011 Location: Austin, TX Posts: 279 Drives: '11 Gunmetal 370Z MT Rep Power: 14	VVEL (and IVT) is only on the intake cams. Our exhaust cams have no adjustability from the factory. These gears are for the exhaust cams, so they would provide some extra tunability that is not possible otherwise.

01-27-2012, 05:25 PM	#10 (permalink)
HKYStormFront A True Z Fanatic Join Date: Apr 2009 Location: Greer, SC Posts: 14,954 Drives: 06 Frontier SE 6spd Rep Power: 52	my mistake, could have sworn it had cam phasers on the exhaust cams... __________________ Patrick // 06 Frontier 6spd Nismosis // Mods: Uprev Tuned @ Z1 Motorsports: 257whp & 292 ft lbs 09 Pontiac G8 GXP // M6 // Sunroof // Tint... For now

01-30-2012, 12:07 PM	#12 (permalink)
indyn Base Member Join Date: Apr 2011 Location: farr north Posts: 241 Drives: 11 BMW 335i 6AT Rep Power: 14	didn't some of the members with FI and headers complain about no power gains because of exhaust cam and VVEL overlaps, these might help in getting back that power. But here's a thought, aftermarket intake cams already exist for the previous gen VQ's, why not make the VVEL run to the similar the specs of those cams??

01-30-2012, 01:35 PM	#13 (permalink)
HKYStormFront A True Z Fanatic Join Date: Apr 2009 Location: Greer, SC Posts: 14,954 Drives: 06 Frontier SE 6spd Rep Power: 52	i looked under cwis' hood yesterday and sure enough, no cam phasers on the exhaust cam. sorry about the confusion. i'm guessing that since the cam phasing is done with oil pressure that along with VVEL, it was too much heat for reliability? not sure on that one. obviously the VVEL system's gains are more important than the limited ability of one cam phaser __________________ Patrick // 06 Frontier 6spd Nismosis // Mods: Uprev Tuned @ Z1 Motorsports: 257whp & 292 ft lbs 09 Pontiac G8 GXP // M6 // Sunroof // Tint... For now

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