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

Reply
 
LinkBack Thread Tools Display Modes
Old 04-27-2016, 01:01 AM   #1
Registered User
 
Join Date: Apr 2016
Location: Norway
Posts: 132
Hello! and what else should be done when changing variocam pads?

I just bought my first Boxster after years of messing with a 944 turbo. It is going to be a dedicated track-day car, only driven on the street to the track and back (8 hours each direction ). I will probably be asking a few questions at first, but I will try to contribute onece I'm up to it.

The car is a bit rough, and needs some attention, especially the cam convergence is out of tolerance. I'll have the car flatbedded to me and will change the IMS, install a deep sump and change the chain pads before I drive it.

Is there anything else I should do while I'm in there? Should I order any tensioners, seals, o-rings or other chain guides? I've been looking at the PET, but I'm new to this engine, so I would appreciate any tips from those in the know.


Also, where can I find the Workshop manual? It has been invaluable when working on the 951.

Bebbetufs is offline   Reply With Quote
Old 04-27-2016, 01:38 AM   #2
Registered User
 
Join Date: Apr 2016
Location: Norway
Posts: 132
This is what I have learnt so far are good WYIT items
Change the spark plug tubes and o-rings.
Change water pump, if it is of unknown age.
Change RMS while changing IMS
Swap to an underdrive pulley for the serpentine to save components when on track.
Change plugs if needed

I'm sure I'm missing something, but this is all I have so far.
__________________
1990 944 Turbo
2007 Renault Clio RS 197 (Sold)
1998 Boxster 2.5L Track Day/ Race Car
2011 Mistubishi i-MiEV
Norway
Bebbetufs is offline   Reply With Quote
Old 04-27-2016, 09:56 AM   #3
Registered User
 
911monty's Avatar
 
Join Date: Oct 2014
Location: California Central Coast
Posts: 1,274
Garage
Hi and welcome! Since you're that far in you should pull the hydraulic lifters. IIRC Jake Raby has said he has found bad tappets at ~35k miles? TStone had a destroyed engine from the carrier failing. Of course updated tensioners also. Have fun. I need a big shop
911monty is offline   Reply With Quote
Old 04-27-2016, 10:25 AM   #4
Registered User
 
Join Date: Apr 2016
Location: Norway
Posts: 132
Thanks. Is there a protocol for checking the lifters?
__________________
1990 944 Turbo
2007 Renault Clio RS 197 (Sold)
1998 Boxster 2.5L Track Day/ Race Car
2011 Mistubishi i-MiEV
Norway
Bebbetufs is offline   Reply With Quote
Old 04-27-2016, 10:40 AM   #5
Registered User
 
911monty's Avatar
 
Join Date: Oct 2014
Location: California Central Coast
Posts: 1,274
Garage
Quote:
Originally Posted by Bebbetufs View Post
Thanks. Is there a protocol for checking the lifters?
Just make sure they are replaced into their original position if reused. You will be checking to make sure the hydraulic piston is not stuck or sticking. They are the end of the oil train and have no relief port so get fouled from old oil and debris causing sticking and leading to failure. One of the casualties from adhering to Porsches oil change schedule.

edit: If you search there is some discussion on this and the use of BMW lifters to replace.

edit2; attached a thread with some options.

Hydraulic cam followers


Last edited by 911monty; 04-27-2016 at 10:51 AM. Reason: add edit.
911monty is offline   Reply With Quote
Reply


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 -8. The time now is 02:59 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page