Go Back   986 Forum - The Community for Porsche Boxster & Cayman Owners > Porsche Boxster & Cayman Forums > Boxster General Discussions

 
 
LinkBack Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 09-05-2009, 01:21 PM   #23
Registered User
 
Join Date: Jan 2009
Location: Corona, CA.
Posts: 129
belt install

Quote:
Originally Posted by eightsandaces
The upper cam marks are within sight, the intake at about 1:30 and the exhaust at about 4 o'clock, to their respective aim points with the crank pulley notch at the bottom. Since the car was in perfect timing and the auxiliary pump can just be reset to 1, I am strongly thinking of just putting the components on and carefully turning the crank, the timing should not have changed if nothing else has moved and I am confident it has not.
It sounds like you are saying that the camshaft sprocket marks are 90 degrees clockwise from their respective pointers, and the crankshaft timing mark is 180 degrees from its correctly timed position. This assumes that "straight down" on the crank pulley notch is 180 degrees from the timing position - I don't remember. If the components are positioned the way I think they are, then it does appear to be in time. Pistons #2 & 3 should be at TDC right now; I don't remember which of those two cylinders would be firing. If you want to put the belt on the way it is now, it sounds like you can do so. If you want the aux shaft sprocket to be in "correct" time (not that it really matters), just ensure that its timing mark is 90 degrees clockwise from the normal timing position.

If you choose to install the timing belt the way it is now, be sure to remove the spark plugs and verify that #2 & #3 are at TDC, install/tension the belt, then carefully turn it over (clockwise) by hand to verify that the timing marks all line up correctly. After that, you might want to turn it over by hand two more revolutions of the crank to be totally certain that everything is timed correctly. It's not uncommon to find a cam off by one tooth on your first attempt to install the belt.
__________________
Blue-S
2000 Boxster S 6-speed - Ocean Blue / Savanna Beige

* 9x7 short shifter * Pedro's enthusiast mount * Carrera Ltw. wheels * Stebro bypass pipes
* M030 coming soon! *
Blue-S is offline   Reply With Quote
 



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 06:57 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2026, 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