Please help!! Loud whine/knock?

Spooler · 10-13-2021, 09:33 AM

Pull the front cover off and look at the galley gaskets. You will see the paper gasket pushed out. You can also pull the valve cover and see if you find anything there. I would do all that before I snatched the motor out.

Spooler · 10-13-2021, 09:35 AM

You could also take both bottom oil pans off and spin in some new rod bearings if needed.

Sicotic · 10-13-2021, 02:29 PM

So motor might be alright after all? I’ll pop those off and I’ll see if I see anything thanks guys for all your help

Rusty · 10-13-2021, 03:27 PM

Pull the front cover off and look at the gaskets. Then drop the oil pan and look at the bearings. If the gaskets are just leaking. You may get lucky and just change the bearings. If the gaskets are blown out. You might have bigger issues.

Sicotic · 10-14-2021, 09:32 AM

Here is a better sound of it to me it sounds like it’s coming from the top back
https://youtube.com/shorts/EXX9lHsIR0I?feature=share

JARblue · 10-14-2021, 09:49 AM

Gonna have to start that teardown if you want to know for sure. Yes, the gaskets are up front, but they aren't going to be making the noise. In very casual observation over the years, Cylinder #5 seems to be the most common one to show symptoms first when things go wrong.

What I can tell you is that it didn't help anything revving it up hard to record the noise

Sicotic · 10-14-2021, 10:24 AM

Quote:

Originally Posted by JARblue

Gonna have to start that teardown if you want to know for sure. Yes, the gaskets are up front, but they aren't going to be making the noise. In very casual observation over the years, Cylinder #5 seems to be the most common one to show symptoms first when things go wrong.

What I can tell you is that it didn't help anything revving it up hard to record the noise

Well I’d rather just replace the motor and then I’ll tear down the old motor I just don’t wanna get into a bunch of stuff and regardless I have to replace the motor in the end. Haha

JARblue · 10-14-2021, 11:33 AM

Quote:

Originally Posted by Sicotic

Well I’d rather just replace the motor and then I’ll tear down the old motor I just don’t wanna get into a bunch of stuff and regardless I have to replace the motor in the end. Haha

That is the smart move

fryzia23 · 10-14-2021, 12:26 PM

Quote:

Originally Posted by JARblue

Gonna have to start that teardown if you want to know for sure. Yes, the gaskets are up front, but they aren't going to be making the noise. In very casual observation over the years, Cylinder #5 seems to be the most common one to show symptoms first when things go wrong.

What I can tell you is that it didn't help anything revving it up hard to record the noise

My motor failed earlier this year at the track and its cylinder #5. Was actually wondering if it’s common for this cylinder to go first.

redondoaveb · 10-14-2021, 12:59 PM

Quote:

Originally Posted by fryzia23

My motor failed earlier this year at the track and its cylinder #5. Was actually wondering if it’s common for this cylinder to go first.

Mine failed on cylinder #5 also.

Sicotic · 10-14-2021, 01:23 PM

Quote:

Originally Posted by redondoaveb

Mine failed on cylinder #5 also.

Is the 5th cylinder on bank 2? Driver side

JARblue · 10-14-2021, 01:49 PM

Quote:

Originally Posted by Sicotic

Is the 5th cylinder on bank 2? Driver side

#5 is the rearmost cylinder on the passenger side

fryzia23 · 10-14-2021, 01:58 PM

Quote:

Originally Posted by Sicotic

Is the 5th cylinder on bank 2? Driver side

During idle disconnect the ignition coil and the knock should lessen significantly.

Sicotic · 10-15-2021, 11:35 PM

Do all years of 370z VQs fit the 2009? I believe updated would have something or at least a sensor different haha. What about g37, q50, will those vq drop in? AWD shouldn’t matter since that’s drive train, just looking to get some info, cleaning garage to get it ready for this uninstall/install. Once again thanks everyone for the quick and knowledgeable replies!

ZoomZ · 10-16-2021, 12:01 PM

Nice article explaining Rod-knock. Not meant to educate the OP or anything, just for those who need a simple definition.

https://www.motortrend.com/how-to/what-is-rod-knock

10-13-2021, 09:33 AM	#31 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,834 Drives: 2013 Nismo 370z Rep Power: 2684392	Pull the front cover off and look at the galley gaskets. You will see the paper gasket pushed out. You can also pull the valve cover and see if you find anything there. I would do all that before I snatched the motor out. JARblue and Rusty like this.

10-13-2021, 09:35 AM	#32 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,834 Drives: 2013 Nismo 370z Rep Power: 2684392	You could also take both bottom oil pans off and spin in some new rod bearings if needed. Rusty likes this.

10-13-2021, 03:27 PM	#34 (permalink)
Rusty Ronin Samurai - Assassin Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 68 Posts: 35,220 Drives: 2011 Nismo GM 6M Rep Power: 2684438	Pull the front cover off and look at the gaskets. Then drop the oil pan and look at the bearings. If the gaskets are just leaking. You may get lucky and just change the bearings. If the gaskets are blown out. You might have bigger issues. JARblue and Sicotic like this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

10-14-2021, 09:49 AM	#36 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	Gonna have to start that teardown if you want to know for sure. Yes, the gaskets are up front, but they aren't going to be making the noise. In very casual observation over the years, Cylinder #5 seems to be the most common one to show symptoms first when things go wrong. What I can tell you is that it didn't help anything revving it up hard to record the noise __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

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10-13-2021, 02:29 PM	#33 (permalink)
Sicotic Base Member Join Date: Sep 2020 Location: Westerville, Ohio Posts: 23 Drives: 09 Nissan 370 CY M6 Rep Power: 5	So motor might be alright after all? I’ll pop those off and I’ll see if I see anything thanks guys for all your help

10-14-2021, 09:32 AM	#35 (permalink)
Sicotic Base Member Join Date: Sep 2020 Location: Westerville, Ohio Posts: 23 Drives: 09 Nissan 370 CY M6 Rep Power: 5	Here is a better sound of it to me it sounds like it’s coming from the top back https://youtube.com/shorts/EXX9lHsIR0I?feature=share

10-15-2021, 11:35 PM	#44 (permalink)
Sicotic Base Member Join Date: Sep 2020 Location: Westerville, Ohio Posts: 23 Drives: 09 Nissan 370 CY M6 Rep Power: 5	Do all years of 370z VQs fit the 2009? I believe updated would have something or at least a sensor different haha. What about g37, q50, will those vq drop in? AWD shouldn’t matter since that’s drive train, just looking to get some info, cleaning garage to get it ready for this uninstall/install. Once again thanks everyone for the quick and knowledgeable replies!

10-16-2021, 12:01 PM	#45 (permalink)
ZoomZ Track Member Join Date: Jan 2017 Location: Vancouver, BC Posts: 761 Drives: 17' 370Z Nismo Rep Power: 40617	Nice article explaining Rod-knock. Not meant to educate the OP or anything, just for those who need a simple definition. https://www.motortrend.com/how-to/what-is-rod-knock