Likes Likes:  0
Results 1 to 4 of 4

Thread: Piston to wall clearance question

  1. #1
    Team Member
    Join Date
    Jun 2005
    Location
    Eastern PA
    Posts
    750
    Post Thanks / Like

    Default Piston to wall clearance question

    I'm having an early Merc triple bored out .030 over and need to tell my boring dude what clearance I want.

    Looked in my genuine Merc manual and couldn't find it. Anyone have a spec?

    Thanks,

    Jeff
    "We live at the bottom of an ocean of air." - General Marvage Slatington

  2. #2
    Team Member
    Join Date
    Sep 2008
    Location
    Singapore/Melbourne/Italy
    Posts
    1,155
    Post Thanks / Like

    Default

    Quote Originally Posted by Fastjeff57 View Post
    I'm having an early Merc triple bored out .030 over and need to tell my boring dude what clearance I want.

    Looked in my genuine Merc manual and couldn't find it. Anyone have a spec?

    Thanks,

    Jeff
    if pistons are stock you add 030 to original bore size

  3. #3
    BoatRacingFacts VIP Aeroliner's Avatar
    Join Date
    Mar 2008
    Location
    Lake Charles, Louisiana 70611
    Posts
    970
    Post Thanks / Like

    Default

    Quote Originally Posted by Fastjeff57 View Post
    I'm having an early Merc triple bored out .030 over and need to tell my boring dude what clearance I want.

    Looked in my genuine Merc manual and couldn't find it. Anyone have a spec?

    Thanks,

    Jeff
    The new Wisco pistons I now stock for the 20, 40 and 60 cubic inch engine call for .0065 clearance. I also use that with my merc pistons we run in D mod
    Thanks hydrospeed77 thanked for this post

  4. #4
    Team Member
    Join Date
    Jun 2005
    Location
    Eastern PA
    Posts
    750
    Post Thanks / Like

    Default

    Thanks. I guess a little loose is best for racing.

    Jeff
    "We live at the bottom of an ocean of air." - General Marvage Slatington

Thread Information

Users Browsing this Thread

There are currently 2 users browsing this thread. (1 members and 1 guests)

  1. largecar91

Similar Threads

  1. Clearance sale everything must go!!!
    By thunderstruck in forum Racing Parts
    Replies: 0
    Last Post: 05-02-2016, 02:00 AM
  2. 2015 Racing Wall Calendars...
    By Andrew 4CE in forum Racing Parts
    Replies: 1
    Last Post: 11-21-2014, 09:51 AM
  3. Compression/Squish Clearance
    By quick2008 in forum Technical Discussion
    Replies: 16
    Last Post: 12-31-2008, 08:44 AM
  4. 4'' Head Clearance
    By cnunez55 in forum Tunnel Outboards and Tri Hulls
    Replies: 13
    Last Post: 06-01-2008, 09:27 AM

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
  •