Increased NVH Above 5k RPM?

TommyC33 · 08-09-2016, 07:31 PM

The motor seems super smooth up until about 5,000 rpm, but then you really start feeling vibrations and it sounds dirty almost. Is that an inherent characteristic of the VQVHR?

Chuck33079 · 08-09-2016, 08:36 PM

Yep. That's just how it sounds.

xxAGAVExx · 08-09-2016, 08:43 PM

Intakes will help it sound better at high RPMs, not to mention give u a hp boost.

Sent from my iPhone using Tapatalk

Davey · 08-09-2016, 09:15 PM

Yeah this motor is a little rough on the top end, at first you feel like maybe you're hurting it, but as long as it's not overheating, has the correct amount of oil, etc, you will be fine.

lj909 · 08-10-2016, 09:27 AM

Get an ATI super damper. It helps smooth it out.

TommyC33 · 08-10-2016, 02:41 PM

Perfect thanks for the quick responses. I'm planning on adding an oil cooler and DCI in the near future. I'll look into the ATI super damper.

Cyber370 · 08-11-2016, 05:07 AM

Quote:

Originally Posted by TommyC33

The motor seems super smooth up until about 5,000 rpm, but then you really start feeling vibrations and it sounds dirty almost. Is that an inherent characteristic of the VQVHR?

Yes it is.

I noticed this too with my '16 Nismo. But, I did find that it depends on how much throttle I'm giving. If I'm at low throttle and let it get past 5000 rpm, it is a lot more harsh than at medium to WOT.

MAMotorsports · 08-11-2016, 11:24 AM

Quote:

Originally Posted by TommyC33

Perfect thanks for the quick responses. I'm planning on adding an oil cooler and DCI in the near future. I'll look into the ATI super damper.

Doing a group buy on the next batch currently!

ATI Damper Group Buy from MA Motorsports **ROUND 2**

B&W_Evader · 08-11-2016, 01:16 PM

Mine seems to have become more quiet at high rpms as it's broken in. Over 60 k on her now and I don't hear that funky rattle over 7k any more. Either that or I got used to it. Broke her in old school, varying RPM, gentle with the throttle but not too gentle with the RPMs.

08-09-2016, 07:31 PM	#1 (permalink)
TommyC33 Base Member Join Date: Jul 2016 Location: Midwest Posts: 31 Drives: 16 370 Sport 6MT Rep Power: 8	Increased NVH Above 5k RPM? The motor seems super smooth up until about 5,000 rpm, but then you really start feeling vibrations and it sounds dirty almost. Is that an inherent characteristic of the VQVHR?

08-09-2016, 08:36 PM	#2 (permalink)
Chuck33079 A True Z Fanatic Join Date: Nov 2011 Location: Houston Posts: 12,265 Drives: 2011 370ztt Rep Power: 29538	Yep. That's just how it sounds. Davey and labrador like this. __________________ 2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

08-09-2016, 08:43 PM	#3 (permalink)
xxAGAVExx A True Z Fanatic Join Date: Nov 2012 Location: Tampa Posts: 1,013 Drives: 09 370Z BLK M6 Rep Power: 20368	Intakes will help it sound better at high RPMs, not to mention give u a hp boost. Sent from my iPhone using Tapatalk __________________ l 09/6MT l BP Twin Turbo Kit l E-85 w/Fuel Return l FI 18" Res CF CBE l Powertrix Ultra-Lite Coilovers l Wavetrac LSD \| Lots of SPL and Carbon Fiber \|

08-10-2016, 09:27 AM	#5 (permalink)
lj909 Track Member Join Date: May 2014 Location: Riverside Posts: 584 Drives: 40th 370Z Rep Power: 11	Get an ATI super damper. It helps smooth it out. __________________ PW 07 HR350Z R.I.P. Totaled by 82yr old woman 2010 40th Anniversary 370Z

08-11-2016, 01:16 PM	#9 (permalink)
B&W_Evader Track Member Join Date: Aug 2011 Location: CA Posts: 972 Drives: slower than before Rep Power: 386	Mine seems to have become more quiet at high rpms as it's broken in. Over 60 k on her now and I don't hear that funky rattle over 7k any more. Either that or I got used to it. Broke her in old school, varying RPM, gentle with the throttle but not too gentle with the RPMs. __________________ \|RIP\|6spd-sport\|OSG-LSD\|XP8\|RBF600\|Eibach Sways\|RE-71R\|FI-34Row\|Gen3-CAI\|Yaw P.S.\|

08-09-2016, 09:15 PM	#4 (permalink)
Davey A True Z Fanatic Join Date: Apr 2011 Location: Indiana Posts: 3,766 Drives: '15 NISMO 6MT Rep Power: 117170	Yeah this motor is a little rough on the top end, at first you feel like maybe you're hurting it, but as long as it's not overheating, has the correct amount of oil, etc, you will be fine.

08-10-2016, 02:41 PM	#6 (permalink)
TommyC33 Base Member Join Date: Jul 2016 Location: Midwest Posts: 31 Drives: 16 370 Sport 6MT Rep Power: 8	Perfect thanks for the quick responses. I'm planning on adding an oil cooler and DCI in the near future. I'll look into the ATI super damper.

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