•  
    Results 1 to 5 of 5

    Thread: What to replace while the head is off?

    1. #1
      What's wrong with my car?
      Join Date
      Oct 2018
      Location
      beecher, il
      Posts
      5
      Garage empty: add car
      Thanks
      0
      Thanked 0 Times in 0 Posts

      What to replace while the head is off?

      Hello everyone,

      I got a 140, 100, 160, 160 reading on my compression test, so the head is off. It was just a bad head gasket as far as I can tell. It looks like someone half ***ed a replacement before they sold me the car. I'm going to have to resurface the head because I scratched it on the dowel like an idiot. While the head is apart, is there anything else you recommend replacing? Valves, guides, keepers, springs, etc? Should I lap the valves or just make sure they're put back in the same location?

      Thank you,
      Scott



    2. #2
      I'll keep it and add a turbo
      Join Date
      Jun 2014
      Location
      Long Island, NY
      Posts
      250
      Thanks
      0
      Thanked 38 Times in 36 Posts
      Quote Originally Posted by sfcarlock View Post
      Hello everyone,

      I got a 140, 100, 160, 160 reading on my compression test, so the head is off. It was just a bad head gasket as far as I can tell. It looks like someone half ***ed a replacement before they sold me the car. I'm going to have to resurface the head because I scratched it on the dowel like an idiot. While the head is apart, is there anything else you recommend replacing? Valves, guides, keepers, springs, etc? Should I lap the valves or just make sure they're put back in the same location?

      Thank you,
      Scott
      Your car is worth $2000 at best, so I wouldn't go to much into replacing things. However, you can take the head to a machine shop and they'll be able to deck the surface and run a bench test to see if the valves, valve seals, and other internals are doing their job. (It could be a bad valve seal or a bent valve that was causing low compression)

      I read your other thread too. Was your car not idling or was it able to hold idle? Is the IAC valve gummed up?
      2004 Aveo beater car
      2005 Aveo LT. 5-speed beater car (DOA)

    3. #3
      2004 1.6 Auto Rust Free
      Join Date
      Jun 2019
      Location
      NC
      Posts
      67
      Thanks
      0
      Thanked 5 Times in 5 Posts
      Replace everything timing belt related.

    4. #4
      What's wrong with my car?
      Join Date
      Oct 2018
      Location
      beecher, il
      Posts
      5
      Garage empty: add car
      Thanks
      0
      Thanked 0 Times in 0 Posts
      Quote Originally Posted by slayerized6 View Post
      Your car is worth $2000 at best, so I wouldn't go to much into replacing things. However, you can take the head to a machine shop and they'll be able to deck the surface and run a bench test to see if the valves, valve seals, and other internals are doing their job. (It could be a bad valve seal or a bent valve that was causing low compression)

      I read your other thread too. Was your car not idling or was it able to hold idle? Is the IAC valve gummed up?
      Thanks for the suggestions. It was holding an idle fine until it stopped starting. I did clean out the TB though because it looked pretty nasty

    5. #5
      What's wrong with my car?
      Join Date
      Jul 2019
      Location
      Scotland
      Posts
      6
      Thanks
      0
      Thanked 0 Times in 0 Posts
      Having just put an engine back together, the head was off due to valve damage. I had to replace 16 valves, the new ones were all lapped in by hand. I'd recommend cleaning the valves whilst out, you'll get a blueprint compression as a result. The stem seals should be replaced too to prevent burning oil.

      As pointed out previously, replace the crappy plastic idler and tensioner and the water pump in the belt area, my water pump looked OK at 33k miles but had push/pull movement (heard as a click) but barely noticeable as actual movement, this starts fraying your brand new shiny timing belt.

      After 3.5 years standing in bits, it started first time with no drama.

      Be really careful when tightening the cam caps, ignore torque and just go by feel.

      All the best.





    Similar Threads

    1. Replies: 0
      Last Post: 07-14-2018, 04:58 PM
    2. Car turns off while driving
      By Geraldine in forum Troubleshooting and Maintenance
      Replies: 2
      Last Post: 05-08-2017, 05:55 PM
    3. Replies: 0
      Last Post: 01-18-2015, 06:59 PM
    4. Mini-guide: Cheap (<$25) AUX port to replace stock head unit.
      By Drake in forum Audio, Video & Interior
      Replies: 4
      Last Post: 09-16-2014, 01:34 AM
    5. Engine cut off while driving
      By tsangmsia in forum Asia
      Replies: 1
      Last Post: 03-24-2012, 01:13 PM

    Posting Permissions

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