Go Back   986 Forum - The Community for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Performance and Technical Chat

Post Reply
 
LinkBack Thread Tools Display Modes
Old 11-25-2018, 05:50 PM   #1
Registered User
 
Join Date: Apr 2016
Location: SE Michigan
Posts: 496
Quote:
Originally Posted by heymanwatchthis View Post
When I replaced motor and transmission mounts, found that I experienced a couple of new types of sounds: 1) tighter motor/chasis meant more vibration transmitted to interior of car, making existing engine sounds more pronounced. 2) New sounds from things inside the cockpit vibrating more - at around the 2,500 rpm mark, under certain conditions I heard a new very pronounced buzz - that sounded like it came from engine. After some hunting I discovered it was the mesh hoop insert that vibrated very breifly. Decided to leave it as it adds some character! Hopefully you are experiencing something similar - more pronounced sounds resulting from tighter mounts.
Yes, it seems as if the new mount, together with UDP that drives the accessories at lower speed, promoted or exposed this noise.

My mesh inserts are secured with multiple zip ties (so I won’t lose them knowing how ridiculously expensive these plastics are), so probably my noise won’t be it, but will double-check. I’m pretty sure it comes behind the firewall, thought.

Keep ideas coming! With running out of ideas myself, I’m planning to drive the car with the serpentine belt off to see if I can positively rule out all accessories and pulleys.
__________________
1997 Boxster arctic silver/ red, XNE riveted mahogany/ leather steering wheel & 917-style wood shift knob, Ben’s short shifter, PSE, 996 TB, UDP, stereo/ center console delete, hardtop and speedster humps, daily driver rain or shine or snow!
Boxstard is offline   Reply With Quote
Old 11-25-2018, 09:47 PM   #2
Registered User
 
Join Date: Feb 2017
Location: CO
Posts: 989
Quote:
Originally Posted by Boxstard View Post
Yes, it seems as if the new mount, together with UDP that drives the accessories at lower speed, promoted or exposed this noise.

My mesh inserts are secured with multiple zip ties (so I won’t lose them knowing how ridiculously expensive these plastics are), so probably my noise won’t be it, but will double-check. I’m pretty sure it comes behind the firewall, thought.

Keep ideas coming! With running out of ideas myself, I’m planning to drive the car with the serpentine belt off to see if I can positively rule out all accessories and pulleys.
My mesh thingies vibrate as well, definitely a distinct buzz.
Geof3 is offline   Reply With Quote
Post Reply



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 On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -8. The time now is 01:07 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2025 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page