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

Posted

The valve job was a gamble I took to fix the smoke and soot (and only forked out a couple grand for that work)... But now I simply can't ignore the massive soot still coming from cyl 1-3 after the top end rebuild.

I'm working on validating these numbers sometime next week when some tools arrive, but with number like these, along with the massive soot - it's tough to keep driving the car with a smile on my face.

compression all around 150psi (very very poor)

leakdown past the rings all around 22-25% (only going to get worse, and likely the cause of the soot and low compression)

Depending on how the validation test of the above numbers comes out will be a big part of my decision on what to do with the car next.

Do I spend another $6k to do it right??? or $2k to just replace main/rod bearings and piston rings (if that would even work without touching the cylinders). I'm in the face of a major decision !!!!

  • Sell the car, sell the valuable accessories and get into another 911 (and possibly replace piston rings/bearings as a "patch")
  • Keep the car, sell the valuable accessories, return the car to stock, and rebuild the engine the right way (LNE nickies 3.6 bore). The car would be mine "forever" at that point.

And some other options on the bottom of my list:

  • Keep driving the car until it blows up or starts spewing oil out the exhaust (not that far away from happening).
  • Sell the existing engine and accessories and do a Chevy LS V8 conversion
  • Sell the existing engine and accessories and buy a used or remanned engine
  • Replace only piston rings, rod and main bearings - don't touch the cylinders, and gamble some more (about $2000 more).

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.