Thread: l67 rebuild questions

Results 1 to 9 of 9
  1. #1 l67 rebuild questions 
    SE Level Member
    Join Date
    May 2013
    Location
    AZ
    Posts
    19
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    so, I decided to freshen up the bottem end of the l67 while I had the motor out, and ran into a problem. cylinder 5 had some pitting, so I started honing it and I think I honed a little too much. I opened the bore up to 3.802 and its still pitted. does anyone know the piston to wall clearance on these motors? I was really hoping I wouldnt have to go oversized on this motor. thanks in advance I can't seem to find it anywhere.

    btw its an o2 gtp with 180000 miles
    Last edited by ImpalaGTP; 07-29-2013 at 09:35 PM.
    Reply With Quote  
     

  2. #2 Re: l67 rebuild questions 
    I live here. MoarkatsINmuhtrailer's Avatar
    Join Date
    Apr 2010
    Location
    Ohio
    Posts
    5,150
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    You ****ed it over now. Just get a new engine.
    Reply With Quote  
     

  3. #3 Re: l67 rebuild questions 
    SE Level Member
    Join Date
    May 2013
    Location
    AZ
    Posts
    19
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by MoarkatsINmuhtrailer View Post
    You ****ed it over now. Just get a new engine.
    think so? I know it would be cheaper to do that than oversize this one
    Reply With Quote  
     

  4. #4 Re: l67 rebuild questions 
    I live here. MoarkatsINmuhtrailer's Avatar
    Join Date
    Apr 2010
    Location
    Ohio
    Posts
    5,150
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Yeah, These blocks just do not take kindly to machine work. They are too thin to really work on them.

    Go to the junkyard, get a new engine and freshen the gaskets. Done.
    Reply With Quote  
     

  5. #5 Re: l67 rebuild questions 
    SE Level Member
    Join Date
    May 2013
    Location
    AZ
    Posts
    19
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by MoarkatsINmuhtrailer View Post
    Yeah, These blocks just do not take kindly to machine work. They are too thin to really work on them.

    Go to the junkyard, get a new engine and freshen the gaskets. Done.
    thanks man, will do. was hoping i could save this one haha
    Reply With Quote  
     

  6. #6 Re: l67 rebuild questions 
    GXP Level Member darkhorizon's Avatar
    Join Date
    Feb 2009
    Location
    flintnasty MI
    Posts
    2,596
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    pictures of cyl walls? I have never seen anything in the cyl walls that hurt anyone. If the crank/main/rod bearings are in good shape you should be able to reassemble the motor, if you are lucky. I would just let the stock pistons/rings ride it out at this point.. the hone hurt you but its probably not going to show any problems in reality.
    Reply With Quote  
     

  7. #7 Re: l67 rebuild questions 
    SE Level Member
    Join Date
    May 2013
    Location
    AZ
    Posts
    19
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    Quote Originally Posted by darkhorizon View Post
    pictures of cyl walls? I have never seen anything in the cyl walls that hurt anyone. If the crank/main/rod bearings are in good shape you should be able to reassemble the motor, if you are lucky. I would just let the stock pistons/rings ride it out at this point.. the hone hurt you but its probably not going to show any problems in reality.
    I will try to get a picture here soon. I have new bearings and rings ready to go in. the rod bearings looked pretty bad but the mains looked great. I was hoping a quick hone would have knocked the pitting down enough.
    Reply With Quote  
     

  8. #8 Re: l67 rebuild questions 
    SE Level Member
    Join Date
    May 2013
    Location
    AZ
    Posts
    19
    Thanks (Received)
    0
    Likes (Received)
    0
    Dislikes (Received)
    0
    here is the pittingKINDLE_CAMERA_1372774117000.jpg
    Reply With Quote  
     

  9. #9 Re: l67 rebuild questions 
    GrandPrix Junkie
    Join Date
    Oct 2009
    Location
    St. Louis
    Posts
    4,732
    Thanks (Received)
    18
    Likes (Received)
    76
    Dislikes (Received)
    0
    You do plan on having the bottom end assembled at a machine shop after they align bore it right? If you don't then you will have a 200-mile miracle on your hands. These engines do NOT last if this is not done. You will end up spinning a bearing and then lower end will be trash.

    Also, don't forget that the bolts are TTY and aren't reuseable (other than the crank balancer bolt). Good luck with your build.
    Reply With Quote  
     

Similar Threads

  1. Rebuild L67 questions
    By jsnyder49090 in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 8
    Last Post: 11-27-2012, 10:18 PM
  2. 3.8 performace rebuild questions...
    By Chris Peterson in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 3
    Last Post: 08-13-2012, 03:17 PM
  3. rebuild questions
    By Toms04compg in forum General Tech Discussion
    Replies: 6
    Last Post: 06-15-2012, 09:23 AM
  4. Engine Rebuild/ Sub questions
    By joliver2011 in forum General Tech Discussion
    Replies: 3
    Last Post: 11-22-2010, 07:44 PM
  5. Motor & Trans Rebuild Questions
    By BlackGhost in forum 3.8L V6 Supercharged (L67)(L32)
    Replies: 14
    Last Post: 12-11-2008, 10:16 AM
Tags for this Thread

View Tag Cloud

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
  •