Results 1 to 2 of 2

Thread: faulty computer = severe overboost = blown rings?

  1. #1
    Mitsu booster
    Join Date
    Dec 2013
    Location
    Milwaukee
    Posts
    2

    faulty computer = severe overboost = blown rings?

    I posted a while back about having an overboost issue with my 86 Daytona T1. I'm thinking the computer is bad, but that's the least of my worries now. It was running fine one day, then it started giving me problems. it over boosted real bad, and i opened the hood right away with the car running and saw my dipstick ejected and puffing smoke everywhere. valve cover started leaking real bad after this too. new PCV valve chatters like crazy at an idle now.
    I've heard that these motors are famous for blowing the rings on cylinder #4.I have not done a compression test yet, but i can hear when its cranking over that one cylinder has much lower compression than the rest.
    so this leaves me with more questions:
    Should i replace all the rings on all the pistons, even if there's only one cylinder with low compression?
    Whats a reputable brand to buy pistons and rings from?
    Replace all pistons while i have the engine apart? or just the one that's got issues?
    other than a potentially messy engine bay, and less performance, whats the harm of driving the car with bad rings? can crankcase pressure eventually lead to something worse?

    As for the boost problem, I've ordered a boost controller so i can just bypass the factory boost solenoid. i probably wont install it right away if I'm just going to be tearing the car apart in the near future..

    any input/advice is greatly appreciated!

  2. #2
    turbo addict
    Join Date
    Dec 2005
    Location
    Mesa, AZ
    Posts
    7,352

    Re: faulty computer = severe overboost = blown rings?

    You probably have a crack piston, or two.

    If you knew the car overboost, why get into boost and risk damaging the engine?
    Last edited by tryingbe; 03-25-2014 at 01:55 AM.

Similar Threads

  1. Can the VSS be faulty but still work ?
    By 135sohc in forum Electrical & Fuel System
    Replies: 8
    Last Post: 12-02-2010, 03:24 PM
  2. Anyone had a MP computer without overboost protection?
    By 1FastCSX289 in forum Electrical & Fuel System
    Replies: 16
    Last Post: 03-08-2009, 11:05 PM
  3. Is this crack to severe?
    By vxvxAndrewxvxv in forum "I need help!"
    Replies: 20
    Last Post: 08-07-2007, 06:31 PM
  4. computer/cam/and rings for sale 2.2
    By dizuster in forum Parts For Sale
    Replies: 3
    Last Post: 06-06-2006, 01:57 AM
  5. severe power loss
    By Domino in forum "I need help!"
    Replies: 19
    Last Post: 04-24-2006, 02:36 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •