follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
Speed By Design
Register Garage Members List Calendar Search Today's Posts Mark Forums Read

Go Back   Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB > Technical Topics > Issues | Warranty | Recalls / TSB

Issues | Warranty | Recalls / TSB Problems, issues, recalls, TSBs


User Tag List

Reply
 
Thread Tools Search this Thread
Old 08-06-2017, 03:59 AM   #1
Deisou
Junior Member
 
Join Date: Oct 2016
Drives: 2013 Subaru BRZ
Location: Australia
Posts: 9
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Tapping Noise After Hard Driving (Video Included)

Hi guys,

I heard this tapping noise from the engine bay after a hot lap at the track when I backed off.

It went on for a about 10 seconds before disappearing. No vibrations or loss of power, just the noise for a short while.

It doesn't sound like it was matched to the engine revs or road speed either.

I did another session and drive the car 2.5 hours to get home afterwards with no issues at all.

Any ideas what the cause of the noise is?

Car: 2013 Subaru BRZ - Stock other than tyres and brake pads & rotors.

[ame="https://www.youtube.com/watch?v=kxIvns9f_Ao"]Subaru BRZ - Brief noise after hot lap - YouTube[/ame]
Deisou is offline   Reply With Quote
Old 08-06-2017, 08:36 AM   #2
ZZT86
Senior Member
 
ZZT86's Avatar
 
Join Date: Jul 2012
Drives: BR86
Location: Location
Posts: 841
Thanks: 310
Thanked 146 Times in 114 Posts
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Oil surge @ high G whilst cornering ? You have enough oil in sump or correct weight given how hard you drive & perhaps lengthy sessions ?
ZZT86 is offline   Reply With Quote
Old 08-06-2017, 10:36 AM   #3
stevesnj
Senior Member
 
stevesnj's Avatar
 
Join Date: May 2013
Drives: 2016 FR-S Oceanic Blue
Location: Southern NJ
Posts: 2,958
Thanks: 2,158
Thanked 1,601 Times in 923 Posts
Mentioned: 30 Post(s)
Tagged: 2 Thread(s)
I'd stop driving it. Sounds like a rod knock. Can you recreate it off track so the dealer can hear it?
__________________

My 2016 Build thread


TRD Exhaust with custom quad tips, TRD Lowering Springs,TRD Quick shifter,LED;DRL, Projectors, and turn signals. Re-badge, 86 Nanny, WinmaxW2 Pads, K&N Drop In, Antenna delete
stevesnj is offline   Reply With Quote
Old 08-06-2017, 11:46 AM   #4
ls1ac
Senior Member
 
ls1ac's Avatar
 
Join Date: Oct 2013
Drives: BRZ, Noble M400, AC-LS7,1956 AC
Location: Wi/Fl
Posts: 1,022
Thanks: 328
Thanked 867 Times in 471 Posts
Mentioned: 7 Post(s)
Tagged: 0 Thread(s)
Garage
As you said it does not seem to be RPM related, it appeared to me it might be speed related. If it is not RPM and you are lucky you may have picked up some junk on your tire and shed it at the next hard corner. (Evan if you are not running very sticky tires someone else may have left a marble.)
Speed related noises are usually tires, brakes, diff, or driveshaft. An other unlikely possibility on our cars is a flapping body panel, but that is normally easily repeatable.
ls1ac is offline   Reply With Quote
The Following 4 Users Say Thank You to ls1ac For This Useful Post:
humfrz (08-06-2017), Icecreamtruk (08-06-2017), Tcoat (08-06-2017), Ultramaroon (08-06-2017)
Old 08-06-2017, 01:54 PM   #5
Ultramaroon
義理チョコ
 
Ultramaroon's Avatar
 
Join Date: Sep 2014
Drives: a 13 e8h frs
Location: vantucky, wa
Posts: 31,825
Thanks: 52,063
Thanked 36,469 Times in 18,894 Posts
Mentioned: 1106 Post(s)
Tagged: 9 Thread(s)
It was during that right hand turn. Nothing to do with your engine. Sounds like wheel frequency.
__________________
Ultramaroon is offline   Reply With Quote
Old 08-06-2017, 02:43 PM   #6
humfrz
Senior Member
 
Join Date: May 2013
Drives: 2013 FR-S, white, MT
Location: Puyallup, WA
Posts: 29,861
Thanks: 28,777
Thanked 31,796 Times in 16,418 Posts
Mentioned: 707 Post(s)
Tagged: 2 Thread(s)
Quote:
Originally Posted by Ultramaroon View Post
It was during that right hand turn. Nothing to do with your engine. Sounds like wheel frequency.
Yep ........ "suspension jitters" fer sure ....... not to worry......


humfrz
humfrz is offline   Reply With Quote
Old 08-06-2017, 06:27 PM   #7
Deisou
Junior Member
 
Join Date: Oct 2016
Drives: 2013 Subaru BRZ
Location: Australia
Posts: 9
Thanks: 0
Thanked 1 Time in 1 Post
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by ZZT86 View Post
Oil surge @ high G whilst cornering ? You have enough oil in sump or correct weight given how hard you drive & perhaps lengthy sessions ?
I'm running Redline 5W30 and levels was full prior. It was around 3 minutes of hard driving.

Quote:
Originally Posted by stevesnj View Post
I'd stop driving it. Sounds like a rod knock. Can you recreate it off track so the dealer can hear it?
Is there an idiot light or check engine light if there is rod knock?
Deisou is offline   Reply With Quote
The Following User Says Thank You to Deisou For This Useful Post:
ZZT86 (09-11-2017)
 
Reply

Tags
engine, hot, noise, tapping, track

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Clicking / tapping sound + fuel pump noise + clutch grinding Mikeez Issues | Warranty | Recalls / TSB 11 04-26-2015 11:19 PM
Tapping noise after driving MrAnthonyC Issues | Warranty | Recalls / TSB 2 09-23-2014 01:06 PM
clicking/tapping noise when shifting semi hard Skurge Issues | Warranty | Recalls / TSB 3 09-20-2013 04:37 PM
Strange Tapping noise from under car after use rhood168 Issues | Warranty | Recalls / TSB 10 02-12-2013 02:16 AM
diy request: install a driving camera by tapping power from the interior map light. shaoster DIY (Do-It-Yourself) Guides 6 01-24-2013 02:02 PM


All times are GMT -4. The time now is 08:33 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.

Garage vBulletin Plugins by Drive Thru Online, Inc.