Results 1 to 6 of 6

Thread: Piston Slap in V8

  1. #1
    Join Date
    Jan 1970
    Location
    Melrose SA
    Posts
    2,838
    Total Downloaded
    0

    Piston Slap in V8

    I have a Rover V8 in my stage 1 that has done about 100000 ks and Im pretty sure that it has a bit of piston slap when its cold.
    The noise sounds like a hollow shallow knock but disapears when it warms up
    It performs fine and uses no oil should I be concerned about it?
    Duane

  2. #2
    Join Date
    Jan 1970
    Location
    Padstow NSW
    Posts
    4,501
    Total Downloaded
    0
    depends if you want to see the conrod sticking out of the block or not??
    the old rover motor will run for ever and a day, thats what they usta say, but alot of them are getting quite long in the tooth now.
    what do you want to do with it? if its a daily driver, rebuild or replace?
    its hard to say how detrimental it could be if its that..

    might need to investigate further.

    cheers phil

  3. #3
    Join Date
    Jan 1970
    Location
    Wheelers Hill, Melbourne
    Posts
    4,085
    Total Downloaded
    0
    My stage 1 did that for 30,000 klm over 6 years and never got worse.
    It was still like that when I sold it

  4. #4
    Join Date
    Jan 1970
    Location
    Avoca Beach
    Posts
    14,152
    Total Downloaded
    0
    My 130K V8 motor also has/had a bit when cold.
    You can hear it louder than in a steel engine because of the alloy block.

    I recently found that it was quietened by switching from 5W-50 Mobil 1 to a thicker winter rating oil 15W-50 .

    So if you are using a low winter number oil switch to a higher cold rating.
    Apart from that I think its harmless.
    Regards Philip A

  5. #5
    Join Date
    Jan 1970
    Location
    Melrose SA
    Posts
    2,838
    Total Downloaded
    0
    Thanks Guys
    Phillip I am running Penrite 20-60 I went around and saw Big John this arvo
    and I think we concluded that it was in the bottom end more than piston slap.
    I have a 82 SD1 engine that has been recoed 30000 ks ago
    I dont want to replace it but I guess I am resigned to doing so.

    Thanks

  6. #6
    sasco Guest
    My 3.5's got this issue, it's had it for about 60 odd thousand k's.

    It's noticable when cold, and under load, so I didn't boot as much these day's.

    I feel it's something that wouldn't cause you much grief provided you understand, that your motor aint what it used to be.

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Search AULRO.com ONLY!
Search All the Web!