Please help!! Loud whine/knock?

Sicotic · 10-14-2021, 08:32 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, 08:49 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, 09:24 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, 10:33 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, 11:26 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

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, 11:59 AM

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, 12:23 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, 12:49 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, 12:58 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, 10:35 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, 11:01 AM

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

Sicotic · 10-20-2021, 06:27 AM

New engine on the way! I’ll document the install and removal, A little hint when trying to find an engine for these cars don’t look up 370z VQ look up Q50 VQ you save about 1200 bucks, just swap harness and accessories, not bad to buy a motor for $500

Dreadnaught · 10-20-2021, 06:50 PM

You only paid 500 dollah for a used engine or a remanufactured engine from Nissan?

Sicotic · 10-20-2021, 10:18 PM

Quote:

Originally Posted by Dreadnaught

You only paid 500 dollah for a used engine or a remanufactured engine from Nissan?

Used with a 1 year warranty 82k miles. Anything with less miles jumps to $1200-$2000

Sicotic · 10-22-2021, 08:19 AM

UPDATE: cylinder 2 is the one with a spin bearing, dropped oil pan and you can see the destruction in that cylinder, as well as the noise before, all
Coming from cylinder 2. Glad I didn’t waste any time on getting a new engine! Will keep the forum updated

10-14-2021, 08:49 AM	#2 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 44 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684441	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 \|

10-20-2021, 06:27 AM	#12 (permalink)
Sicotic Base Member Join Date: Sep 2020 Location: Westerville, Ohio Posts: 23 Drives: 09 Nissan 370 CY M6 Rep Power: 5	New engine on the way! I’ll document the install and removal, A little hint when trying to find an engine for these cars don’t look up 370z VQ look up Q50 VQ you save about 1200 bucks, just swap harness and accessories, not bad to buy a motor for $500 old guy likes this.

10-20-2021, 06:50 PM	#13 (permalink)
Dreadnaught Track Member Join Date: Dec 2009 Location: Farmington, Utah Posts: 582 Drives: 14 SR 370z 6MT Rep Power: 10140	You only paid 500 dollah for a used engine or a remanufactured engine from Nissan? __________________ Ford Diesel and Heavy Line Technician at your service. Last edited by Dreadnaught; 10-20-2021 at 07:41 PM.

10-22-2021, 08:19 AM	#15 (permalink)
Sicotic Base Member Join Date: Sep 2020 Location: Westerville, Ohio Posts: 23 Drives: 09 Nissan 370 CY M6 Rep Power: 5	UPDATE: cylinder 2 is the one with a spin bearing, dropped oil pan and you can see the destruction in that cylinder, as well as the noise before, all Coming from cylinder 2. Glad I didn’t waste any time on getting a new engine! Will keep the forum updated JARblue likes this.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Loud ticking noises from engine bay, is this normal? or too loud? [VID]	Gadzala	Engine & Drivetrain	9	12-23-2017 02:03 PM
7AT Loud Rattle/Knock at Idle when in Gear	AlexWalton	Engine & Drivetrain	1	09-29-2016 09:15 PM
Rattle noise!!! Not loud but loud enough to be annoying!!	Cam1379	Nissan 370Z General Discussions	2	12-16-2013 04:17 PM
Loud Whine after Oil change	Mitco39	Engine & Drivetrain	9	08-08-2013 06:43 PM
1st Gear high pitched whine, and super high pitched whine downshifting into first	wdkwang	Engine & Drivetrain	18	04-10-2013 03:55 PM

10-14-2021, 08:32 AM	#1 (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, 10:35 PM	#10 (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, 11:01 AM	#11 (permalink)
ZoomZ Track Member Join Date: Jan 2017 Location: Vancouver, BC Posts: 779 Drives: 17' 370Z Nismo Rep Power: 40618	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