[Question] Side hole on a snail - what's it for?
+ Reply to Thread
Results 1 to 5 of 5

Thread:
Side hole on a snail - what's it for?

  1. #1
    Member John Thompson's Avatar
    Join Date
    Apr 2017
    Location
    Bangor Maine USA
    Posts
    56

    Default Side hole on a snail - what's it for?

    Being new to snails when I got mine I asked people what the side hole that was plugged was for. Got a lot of off the cuff answers. Mostly people said it had to do with casting the piece / manufacture. Now for the first time I see someone has plumbed to this hole. So - what gives. What's the deal? Was hoping some of the old timers might have some information. Thanks!

    Click image for larger version. 

Name:	35588546076_9325fffbc1_o.jpg 
Views:	32 
Size:	27.3 KB 
ID:	998186

    Click image for larger version. 

Name:	23509502_257278454799437_477342688744479350_o.jpg 
Views:	31 
Size:	20.2 KB 
ID:	998178

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    Senior Member
    Join Date
    Aug 2012
    Posts
    187

    Default

    Thread from 2012, probably not much help...lol.

    http://www.performanceboats.com/jet-...-question.html

  4. #3
    Senior Member SPECTRA-SANGER's Avatar
    Join Date
    Sep 2016
    Posts
    173

    Default

    My snails do not have that casting in them, I believe they were part of a casting process for some manufacturers, I would think that having that water high like that you could pump water back into your header.. no sure but have not seen them set up like this before.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	Polished exhaust Port.jpg 
Views:	19 
Size:	20.5 KB 
ID:	998266   Click image for larger version. 

Name:	Polished Exhaust rear.jpg 
Views:	19 
Size:	20.5 KB 
ID:	998274   Click image for larger version. 

Name:	IMG_1868.jpg 
Views:	32 
Size:	22.5 KB 
ID:	998282  

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    Senior Member SKIDDER's Avatar
    Join Date
    Aug 2010
    Location
    Chino Hills, southern California
    Posts
    188

    Default Side hole on a snail , for casting cores

    When you cast any part and need a hole or passages, (water, oil, air,) you can start with a solid casting and drill / mill out the passages to size, not always $$ practical. If you want a hollow casting where there are water passages inside the casting, you make a mold or pattern for a "core". This core is typically made from the same sand used to cast the part but held together with some form of binder, or epoxy. This core must be supported inside the cavity of the mold for the finished part. When the mold for your snailes was made there was a small dowels partruding from it to hold the core in place while the aluminum is poured into the mold.

    After the aluminum hardens and cools the part is removed from the mold the core must be removed. anything from vibrators, to chisels, or sand blasting to clean the inside passages. once the core material is out these holes must be plugged. using freeze plugs just like the ones on all cast engine blocks, heads, intake manifolds, these openings can be threaded like on the bottom of the snailes (yes these are core locating locations).

    Remember even the cylinder bores are formed with cores, lifter valley ect.

    I used to cast things at home.

    Name:  Sand cast core.jpg
Views: 166
Size:  7.7 KBClick image for larger version. 

Name:	2 core casting.jpg 
Views:	28 
Size:	20.4 KB 
ID:	998298
    Last edited by SKIDDER; 11-17-2017 at 12:23 PM. Reason: add 2nd picture

  7. #5
    Member John Thompson's Avatar
    Join Date
    Apr 2017
    Location
    Bangor Maine USA
    Posts
    56

    Default

    Wow great info thanks

+ Reply to Thread

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Please select your insurance company (Optional)

Log-in


Tags for this Thread

Digg This Thread

Posting Permissions

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

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95