Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes ShopForum > Technical Information and Support > Tech Help

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 05-15-2003, 03:18 PM
Member
 
Join Date: Apr 2001
Posts: 86
Any Porsche 928 experts out there? <Timing belt>

Hello all,

I'm doing a timing belt change on an '87 928S4 and I need to set the tension. I have the service manual and it calls for a setting of 5.0-5.3 which is great but its reading you'd get from the Porsche special tool which is unavailable to me.

I've seen all kinds of aftermarket belt tensioning tools on the internet so its obvious you don't have to have the Porsche special tool to do the job, so here is my question.

I have a Borroughs belt tension gage which is a far better tool then some of the ones I've seen on the internet all I need to know is what would be the proper ft lbs.

I'm guessing that it should be around 75-79 but on an interference engine guessing is not wise.

Anyone have any idea?

Thanks in advance!

Ron
Reply With Quote
  #2  
Old 05-15-2003, 03:38 PM
Registered User
 
Join Date: Dec 2001
Posts: 571
You're likely aware of this - thought I'd post it anyway:

http://home.attbi.com/~87928s4/928links.htm
Reply With Quote
  #3  
Old 05-15-2003, 03:45 PM
Randall Grubbs
Guest
 
Posts: n/a
I don't know of any way to check the tension other than with the Porsche tool or the "Kempf tool". From somebody who has crashed all 32 valves on one of those engines you're correct when you say you want to get it right - if for no other reason than to be able to drive without worrying about it. I know Dave Roberts sells the Kempf tool at www.928gt.com and I think 928 International sells it at www.928intl.com for $50-60. Check out
http://www.nichols.nu/tips.htm under "Engine" for testimonials from people who have used the tool.

Randy
'94 E500
Reply With Quote
  #4  
Old 05-15-2003, 03:55 PM
Randall Grubbs
Guest
 
Posts: n/a
Here's a site where you can compare the tone of plucking the belt to a .wav file to listen for the correct tension:

http://www.jageng.com/sharkbit_2.htm

If you're not a musician I might not recommend it though!!!

Randy
'94 E500
Reply With Quote
  #5  
Old 05-15-2003, 04:14 PM
Member
 
Join Date: Apr 2001
Posts: 86
Well, the music man wins!

First off thanks for the quick replys.

One of my guys here in the shop didn't laugh when I showed or should I say played him the timing belt blues but instead jumped right on the concept. Appearently he used to play and write music so it all made sense to him.

It actually wasn't far off from where we were before but now atleast we have two "opinions" so to speak.

Thank you Randall

Ron
Reply With Quote
  #6  
Old 05-15-2003, 04:17 PM
Randall Grubbs
Guest
 
Posts: n/a
Don't forget to retension the belt in 1,500 miles or so!
Reply With Quote
  #7  
Old 05-15-2003, 04:34 PM
Registered User
 
Join Date: Mar 2003
Location: Convent Station, NJ
Posts: 755
Ron,

Below is a link to thread on the same subject....

http://forums.pelicanparts.com/showthread.php?s=&threadid=16012
__________________
Rick

'85 380 SL (sold)
'85 Carrera Flatnose
'71 280 SL Signal Red/Cognac
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

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 -4. The time now is 03:29 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2011 Pelican Parts - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page