Register

If this is your first visit, please click the Sign Up now button to begin the process of creating your account so you can begin posting on our forums! The Sign Up process will only take up about a minute of two of your time.

Follow us on Facebook Follow us on Twitter
Results 1 to 7 of 7

Thread: 502 pistons

  1. #1
    Registered moparjet's Avatar
    My Boats:
    89 formula 242ls 502cid
    Join Date
    Jul 2009
    Posts
    72

    502 pistons

    did gm use wiesco pistons in 502 marine engines. my pistons have 6226a3 stamped on them. this engine was sopposed to be a virgin. head gasket leaked water into #7 and burnt piston

  2. #2
    Registered
    Join Date
    Feb 2011
    Posts
    1,915
    Quote Originally Posted by moparjet View Post
    did gm use wiesco pistons in 502 marine engines. my pistons have 6226a3 stamped on them. this engine was sopposed to be a virgin. head gasket leaked water into #7 and burnt piston
    My understanding was that they used SRP's.

  3. #3
    Registered
    My Boats:
    92 Baja Outlaw
    Join Date
    Mar 2011
    Location
    St. Louis, MO
    Posts
    108
    I have some practically new JE 502 pistons if you need.

  4. #4
    Registered
    Join Date
    Feb 2011
    Posts
    1,915
    Quote Originally Posted by arandaz View Post
    I have some practically new JE 502 pistons if you need.
    Oops! Meant to say JE's.

  5. #5
    Registered
    Join Date
    Oct 2005
    Location
    Waldorf, Md
    Posts
    523
    mj,
    I do seem to remember doing a 502 that had Wiseco pistons in it a bunch of years ago. It also had a very unusual ring combination. I will look in my computer at the shop on Wednesday and see what I can find.

    Bill Koustenis
    Advanced Automotive Machine
    Waldorf Md

  6. #6
    Gold Member Gold Member rw40426's Avatar
    My Boats:
    29' Fever/525
    Join Date
    Nov 2010
    Location
    Lake Murray
    Posts
    130
    I have a couple 525efi pistons they have 250hrs. and one of the has 2hrs.

  7. #7
    Registered
    Join Date
    Oct 2005
    Location
    Waldorf, Md
    Posts
    523
    mj,
    I looked this morning and found the work order I was thinking about. I installed a sleeve and got one Wiseco piston for a 502 Mercruiser back in 2005. As far as I remember the engine was untouched prior to that point. I was wrong about the rings, I used a set of the regular Speed Pro rings for the 502. I dont see that piston number in the Wiseco catalog any more but they have one listed in thier Pro Tru line.

    Hope this helps,
    Bill Koustenis
    Advanced Automotive Machine
    Waldorf Md


Posting Permissions

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


OSO Directory
All times are GMT -5. The time now is 04:43 AM.
Powered by vBulletin® Version 4.2.0
Copyright © 2014 vBulletin Solutions, Inc. All rights reserved.
Search Engine Optimization by vBSEO 3.6.1
Original Poster In Postbit provided by Original Poster In Postbit v1.0.0 (Free) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd. Runs best on HiVelocity Hosting.
Copyright 2011 OffShoreOnly. All rights reserved.