|
|
|
|
| Author |
|
|
Registered
Join Date: Apr 2003
Posts: 45
|
Estimation on belt tension
Hi, currently fixed my 944 w/ a valve job, new belts, ect. Drove a few days ago, balance shaft belt broke. Belt didnt touch the timing belt so head is fine. NOW..
I replaced the balance shaft belt, but was wondering just how tight it needs to be tensioned? And the same with my timing belt. I own a Haynes manual that tells me "go to a dealer, go to a dealer." Is there a way to bypass spending even more money and just doing it myself? 1. My timing belt is on relatively tight but feels a little loose on the belt part that connect the cam to the crank. Should this be tightened more and how much more? 2. My crank shaft belt is on not too tight and not too loose. Medium, so to speak. Should this be tightened more or less? Thank you for any opinions, and if push come to shove, if anyone lives in Central-Northern California, and would like to give me a little hand, appreciated.  THANKS |
||
01-24-2006, 01:14 PM
|
|
|
Registered
|
90 degree twist in the longest span will work. Make sure the balance shafts/pulleys are lined up correctly or you will get vibrations.
__________________
Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
||
|
01-24-2006, 01:41 PM
|
|
|
Registered
Join Date: Apr 2003
Posts: 45
|
Quote:
|
||
|
01-24-2006, 02:07 PM
|
|
|
Registered
|
Engine at top dead center:
 If you still have a high frequency vibration after alignment then one of the pulleys may not be properlt aligned on the balance shaft. Each pulley has two keyways.
__________________
Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! Last edited by SoCal Driver; 01-24-2006 at 02:59 PM.. |
||
|
01-24-2006, 02:57 PM
|
|
|
Registered
Join Date: Jun 2004
Location: Granite Falls, WA
Posts: 543
|
You must not have seen the resources here. Clark's Garage index
Go there, look under camshaft, and balance shafts, and study it. It should answer most all your questions. Pay close attention to the direction in which you turn the belt tension rollers also. Good luck.
__________________
1985/1 944 Granite Red (wife's car. Iceshark is lighting her way) 1983 944 Platinum (my daily) 1985/1 Guards Red (project) |
||
|
01-24-2006, 03:38 PM
|
|
1983 Porsche 944 2.5 liter
