Jump to content

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

Recommended Posts

I need to replace the chain tensioner and the engine needs to be at overlapping TDC.

The manual shows how to do this with a special tool, but I don't have that.

My question is, how can I tell which TDC I'm on, the ignition or overlapping?

Is this an interference engine or would the valves be open on the overlapping TDC? If so, I could try some air pressure to see if the valves are open?

Link to comment
Share on other sites

As per the workshop manual reference:

Take all the spark plugs out except for #3.

Insert the ignition rod module back in cylinder 1 hole.

Rotate crankshaft pulley until igniter rod module pops out of its hole.

Continue to rotate crankshaft until the fixing bore hole on the crankshaft belt pulley is aligned with the bore in the the timing case cover. You now have ignition TDC.

Rotate an additional 360 degrees to get overlapping TDC.

Link to comment
Share on other sites

  • 2 weeks later...

You can easily make a tool yourself. If you feel the back of the camshafts you will feel 2 grooves. Just cut a iron that blocks both camshafts of one bank e voila. You need to put the timing cover first then you set the timing. Don't forget to torque the chain tensioner and don"t bend the pins on the back of the camshaft.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.