Supercharger Discussion For all you misguided souls.
Sponsored by:
Sponsored by:

NA versus NB crank dampers

 
Old 06-04-2013, 05:38 PM
  #1  
Junior Member
Thread Starter
 
laguna96's Avatar
 
Join Date: Oct 2011
Posts: 77
Total Cats: 5
Default NA versus NB crank dampers

As this is a turbo forum, I understand that this information may be less relevant to others as it is to me. However, I do recognize the lack of support elsewhereo n reliable forums for supercharged cars and I would like to share my findings as I haven't really come across a solid source elsewhere that connects these dots to this issue.

When trying to fit a newer machined TDR overlay pulley (customized at a local shop for 7-ribs instead of 4, irrelevent to this fitment though) I noticed the pulley did not slip into the damper as my older one did. The TDR overlay did, however, fit right into an NB damper which struck an interest of mine. Had I been any other less resourceful customer I'd have raged to track dog racing for a refund! For any relevanceo n the matter, please refer to the photos for the various differences and pssible pros/cons to your particular applications:

Left side: new TDR overlay
Right side: Older TDR overlay


Left side: new TDR overlay with 2003 damper
Right side: Older TDR overlay with 1996 damper


Notice the difference in the chamfer from old to new:



Left side: 1996 damper
Right side: 2003 damper



2003 damper inner hub area almost looks like a billet piece, nice 90 degree angle:


1996 damper inner hub with a clearly intrusive 1/4 circular ridge around the circumference (the purpose for the chamfer design on the overlay):


1996 inner hub diameter (for reference to whatever overlay you may intend to use, be sure it clears!):


2003 inner hub diameter:


also note the design differences of the face of the dampers that the NA one has sort of a protruding inner section whereas the NB damper is almost cut flat on the face.

Hope this helps someone stuck in a weird dead end on an unexpected issue!
Attached Thumbnails NA versus NB crank dampers-imag1300_burst002_zps7a68354e.jpg   NA versus NB crank dampers-imag1301_burst002_zpsbd411f13.jpg   NA versus NB crank dampers-imag1302_burst006_zpsdd5cf692.jpg   NA versus NB crank dampers-imag1303_burst002_zps0d048bea.jpg   NA versus NB crank dampers-imag1304_burst002_zpsa00c88a4.jpg  

NA versus NB crank dampers-imag1305_burst002_zps68b733c4.jpg   NA versus NB crank dampers-imag1306_burst001_zps60e14bc9.jpg   NA versus NB crank dampers-imag1307_burst001_zpsc1a582e4.jpg   NA versus NB crank dampers-imag1309_burst002_zps2c1970e8.jpg   NA versus NB crank dampers-imag1310_burst002_zps4855fbc2.jpg  

laguna96 is offline  
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Frank_and_Beans
Supercharger Discussion
13
09-12-2016 08:17 PM
Elfering
MEGAsquirt
50
10-05-2015 08:04 AM
Greasyman
General Miata Chat
2
09-28-2015 10:44 AM


Thread Tools
Search this Thread
Quick Reply: NA versus NB crank dampers


Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.