Welcome to Club Hot Rod!  The premier site for everything to do with Hot Rod, Customs, Low Riders, Rat Rods, and more. 

  •  » Members from all over the US and the world!
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and hundreds of thousands of posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

 
Like Tree16Likes

Thread: Sbc 350 vortec heads coolant out of cylinder 6 exhaust.
          
   
   

Reply To Thread
Page 3 of 4 FirstFirst 1 2 3 4 LastLast
Results 31 to 45 of 48
  1. #31
    jerry clayton's Avatar
    jerry clayton is offline CHR Member Visit my Photo Gallery
    Join Date
    Feb 2006
    Location
    Bartlett
    Posts
    6,622

    So are the heads modified in any way????? milled, ported? And did you use any sealer on the head bolts?/ If the heads have been ported( and those port walls look thinner than normal and close to the bottom) the porter could of went thru the wall near the bolt boss that is between the two ports which will cause a pretty drastic coolant leak, especially if the bolt threads into block aren't properly sealed---happens a lot with Chevys because the block deck bolt holes go thre and aren't blind like most other manufactures---------

  2. #32
    Grillhands is offline CHR Member Visit my Photo Gallery
    Join Date
    Jun 2018
    Location
    Edison
    Posts
    27

    Quote Originally Posted by jerry clayton View Post
    So are the heads modified in any way????? milled, ported? And did you use any sealer on the head bolts?/ If the heads have been ported( and those port walls look thinner than normal and close to the bottom) the porter could of went thru the wall near the bolt boss that is between the two ports which will cause a pretty drastic coolant leak, especially if the bolt threads into block aren't properly sealed---happens a lot with Chevys because the block deck bolt holes go thre and aren't blind like most other manufactures---------
    The heads have a mild port. They are not milled. I use Indian head on the arp head bolts. I had these heads on another engine and it didn't give me any problems. The heads maybe have 1k miles on them.

  3. #33
    DennyW is offline CHR Member Visit my Photo Gallery
    Join Date
    Oct 2004
    Location
    city
    Posts
    928

    (Indian head)
    This gets hard. Not good for that use.

    Instead, use this on the threads. Works WAY better. And, it stays flexible.

    High-Temp Red RTV Silicone Gasket Maker 81160

    red rtv 81160.jpg

  4. #34
    jerry clayton's Avatar
    jerry clayton is offline CHR Member Visit my Photo Gallery
    Join Date
    Feb 2006
    Location
    Bartlett
    Posts
    6,622

    I think maybe you also have a problem with your compression guage-maybe filled with the coolant?????????There isn't any way that those pistons on stock heads/block would have that much compression

  5. #35
    Grillhands is offline CHR Member Visit my Photo Gallery
    Join Date
    Jun 2018
    Location
    Edison
    Posts
    27

    I tore down the engine and a piece of the side skirt came falling out. Once it dropped everything spun freely. To my surprise there are no marks or scuffs on the cylinder walls what so ever. I was expecting some really nice gouges but its smooth like when I first honed it. I'm glad the block is not ruined however I'm still gonna pick up the jasper.
    DennyW likes this.

  6. #36
    36 sedan's Avatar
    36 sedan is offline CHR Member Visit my Photo Gallery
    Join Date
    Apr 2012
    Location
    american canyon
    Car Year, Make, Model: 36 Ford Sedan, 23 T Bucket
    Posts
    1,330

    You still need to determine what caused the skirt to break, they don't normally break on their own.
    JMHO, but I suspect too much taper wear at the bottom of the cylinders.

  7. #37
    Grillhands is offline CHR Member Visit my Photo Gallery
    Join Date
    Jun 2018
    Location
    Edison
    Posts
    27

    Take a look
    Attached Images

  8. #38
    36 sedan's Avatar
    36 sedan is offline CHR Member Visit my Photo Gallery
    Join Date
    Apr 2012
    Location
    american canyon
    Car Year, Make, Model: 36 Ford Sedan, 23 T Bucket
    Posts
    1,330

    JMHO, looks like ring blow-by and uneven skirt wear. I would check the ring lands for wear and cylinders for taper.
    Again just my opinion, but it's probably time for boring and new pistons.

  9. #39
    34_40's Avatar
    34_40 is offline CHR Member Visit my Photo Gallery
    Join Date
    Sep 2007
    Location
    New Bedford
    Car Year, Make, Model: 34 Ford 3W Coupe Replica
    Posts
    12,690

    Were the cylinders measured for wear / taper before the "rebuild"?
    Or did you just hone and set in new rings?

  10. #40
    shine's Avatar
    shine is online now CHR Member Visit my Photo Gallery
    Join Date
    Nov 2003
    Location
    bluff dale texas
    Car Year, Make, Model: 47 inderweed
    Posts
    1,782

    350 short blocks are cheap. scrap it and start over .
    NTFDAY and cffisher like this.

  11. #41
    jerry clayton's Avatar
    jerry clayton is offline CHR Member Visit my Photo Gallery
    Join Date
    Feb 2006
    Location
    Bartlett
    Posts
    6,622

    Skirt tabs on cast pistons are very easily cracked/broken just handling the pistons while on the rods-the flip side to side against shank of rod will very easily crack and/or break off the amount of the tabb that you see in these pics-----while there are only a few pics in this thread, I see several no-no's but have received no comment back from poster

  12. #42
    Grillhands is offline CHR Member Visit my Photo Gallery
    Join Date
    Jun 2018
    Location
    Edison
    Posts
    27

    Quote Originally Posted by 34_40 View Post
    Were the cylinders measured for wear / taper before the "rebuild"?
    Or did you just hone and set in new rings?
    I honed and set new rings.

  13. #43
    Grillhands is offline CHR Member Visit my Photo Gallery
    Join Date
    Jun 2018
    Location
    Edison
    Posts
    27

    Quote Originally Posted by jerry clayton View Post
    Skirt tabs on cast pistons are very easily cracked/broken just handling the pistons while on the rods-the flip side to side against shank of rod will very easily crack and/or break off the amount of the tabb that you see in these pics-----while there are only a few pics in this thread, I see several no-no's but have received no comment back from poster
    What's the purpose of that tab? I have another set of pistons doesnt have them
    Attached Images

  14. #44
    DennyW is offline CHR Member Visit my Photo Gallery
    Join Date
    Oct 2004
    Location
    city
    Posts
    928

  15. #45
    Grillhands is offline CHR Member Visit my Photo Gallery
    Join Date
    Jun 2018
    Location
    Edison
    Posts
    27


    That's was an excellent article!

Reply To Thread
Page 3 of 4 FirstFirst 1 2 3 4 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Links monetized by VigLink