to drill or not to drill - Hot Rod Forum : Hotrodders Bulletin Board
Hotrodders.com -- Hot Rod Forum



Register FAQ Search Today's Posts Unanswered Posts Auto Escrow Insurance Auto Loans
Hot Rod Forum : Hotrodders Bulletin Board > Tech Help> Electrical
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 10-02-2006, 06:52 PM
Registered User
 
Join Date: Sep 2004
Location: hawthorne, n.j.
Age: 63
Posts: 76
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
to drill or not to drill

i'm in the process of changing over my 54 ford, 6cyl to a neg grnd 12v system using a delco 12si alt. right now i'm trying to position the alt so it lines up with the other pulleys. i found a brkt from a 52 cadillac that would put the alt in the right position, but the ears on the brkt are at the ends and i would need a 8" bolt. so far this is not a problem. the blip is that the hole in the alt is 10mm. would anyone out there think twice about drilling out the alt hsng? all of the openings would be taped to keep the shavings out. it's either that or fabricate a brkt that would require a shorter 10mm bolt.
thanks,
fiddy fo foad

    Advertisement
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 10-02-2006, 07:17 PM
66GMC's Avatar
Get in, sit down, hang on
 

Last journal entry: Cab Removal
Last photo:
Join Date: May 2005
Location: Olds, Alberta Canada
Age: 57
Posts: 2,762
Wiki Edits: 0

Thanks: 32
Thanked 90 Times in 85 Posts
My only comment is that all subsequently-replaced alternators would ALSO have to be drilled.

12 SI alternators have been around for a while ... I think. Perhaps one from the 70's would be drilled for 3/8" or 7/16" bolt?

I'm thinking 77 Olds Delta 88, 403 engine, 80 Amp for an application example


HTH,
Don
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 10-03-2006, 01:09 AM
docvette's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Rebuild an alternator Last photo:
Join Date: Mar 2004
Location: Lafayette, california
Age: 62
Posts: 7,362
Wiki Edits: 12

Thanks: 0
Thanked 6 Times in 3 Posts
Doc here,

Before you start making brackets and drilling stuff out...

If your going for the "Retro" look...and want to also use your stock mounts (straight up change out..)

Call or Email these guys..

Genenator

They make an alternator (or will convert yours) Right in the stock generator body...only you will know it's not a Generator..and you don't have to re~invent the wheel...

Doc
__________________
Aftermarket Solutions
Electronic & Electrical
Innovations
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 10-03-2006, 03:34 AM
russlaferrera
 
Last wiki edit: Threading tips
Join Date: Jun 2006
Location: Mechanicsville. Virginia
Age: 68
Posts: 205
Wiki Edits: 2

Thanks: 0
Thanked 0 Times in 0 Posts
to drill or not to drill

Not seeing the bracket. Could you drill out the mounting hole in the bracket and re tap it to 10 mm Helicoil? Or use an insert?

Just a thought. russ
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 10-03-2006, 05:32 AM
Tbucit's Avatar
Registered User
 

Last journal entry: Kinda showing off
Last photo:
Join Date: Mar 2006
Location: Conyers GA
Posts: 75
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
My thought would be to do what ever you needed to do to mount the alternator. If it needs to be drilled drill it. It sounds like the least expensive option.
Randall
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 10-03-2006, 08:37 AM
Registered User
 
Last photo:
Join Date: Sep 2006
Location: kansas
Age: 68
Posts: 515
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
drilling

drilling the alternator should be the last resort, cause what would you do if you needed to replace it on the road some day ??? like on sunday at 4pm in a Walmart or K-mart parking lot ???

Last edited by knighthawk; 10-03-2006 at 08:45 AM. Reason: ?
Reply With Quote Quick reply to this message
  #7 (permalink)  
Old 10-03-2006, 08:58 AM
Brian_B's Avatar
Lost in the 50s!
 

Last journal entry: time to start body work
Last photo:
Join Date: Jan 2006
Location: Mountain Home, AR
Age: 47
Posts: 759
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I would fab a bracket. That sounds a lot easier than carrying a drill and tape with you wherever you go. They always go out when you least expect it.
Reply With Quote Quick reply to this message
  #8 (permalink)  
Old 10-03-2006, 03:44 PM
Registered User
 
Join Date: Sep 2004
Location: hawthorne, n.j.
Age: 63
Posts: 76
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
to drill or not to drill

guys, thanks for all of the input. didn't even consider breaking down on the road. thats something to ponder.
fiddyfofoad

Last edited by fiddyfofoad; 10-03-2006 at 05:03 PM. Reason: changed my mind
Reply With Quote Quick reply to this message
  #9 (permalink)  
Old 10-03-2006, 07:01 PM
docvette's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Rebuild an alternator Last photo:
Join Date: Mar 2004
Location: Lafayette, california
Age: 62
Posts: 7,362
Wiki Edits: 12

Thanks: 0
Thanked 6 Times in 3 Posts
Doc here,

Without a photo (s) of the mount system it's really kind of hard to comment..

But If you go with the Delco, Would it be possible to get a bolt, slightly longer than needed, that will fit INSIDE the Delco, Then Cut the Head off the bolt and weld it to the mount...So the threaded end is FORWARD??

This way the "Stud" would remain when you pulled the Alternator, and on install, you'd just need to install a Washer, Lock-washer, and Nut..Sorta bass~Ackwards From the rest of the world..

Doc
__________________
Aftermarket Solutions
Electronic & Electrical
Innovations
Reply With Quote Quick reply to this message
  #10 (permalink)  
Old 10-05-2006, 06:43 PM
Registered User
 
Join Date: Sep 2004
Location: hawthorne, n.j.
Age: 63
Posts: 76
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
not to drill

after thinking it through, i think it's best to leave the major component unaltered. i have a few different ideas running through my head. i'm not 100% sure the caddy brkt will put the pulley dead on, so i might make a brkt that is adjustable to say 3/8". i'm lucky that i work in a mack truck dealers parts dept. where you can find parts that can be modified to do almost anything, thats how i got the alt direct from delco for cost. thanks again for all of your input in helping me make the best decision.
fiddyfofoad
Reply With Quote Quick reply to this message
  #11 (permalink)  
Old 10-05-2006, 07:04 PM
docvette's Avatar
Hotrodders.com Moderator
 
Last wiki edit: Rebuild an alternator Last photo:
Join Date: Mar 2004
Location: Lafayette, california
Age: 62
Posts: 7,362
Wiki Edits: 12

Thanks: 0
Thanked 6 Times in 3 Posts
Doc here,

KEWL..

Don't leave us hanging..post back the results..

Doc
__________________
Aftermarket Solutions
Electronic & Electrical
Innovations
Reply With Quote Quick reply to this message

Recent Electrical posts with photos

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Hot Rod Forum : Hotrodders Bulletin Board forums, you must first register.
Please enter your desired user name (usually not your first and last name), your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Left hand drill bits WakBordr7387 Hotrodding Basics 28 12-12-2007 02:43 PM
stupid question about drill bits bigfred1958 Garage - Tools 19 10-22-2007 12:53 PM
To Drill or Not To Drill (Carb Question) leejoy Engine 40 03-04-2006 08:41 AM
High strength drill bit willys36@aol.com General Rodding Tech 46 01-27-2005 08:51 AM
Where to drill the manifold markn Engine 5 05-05-2004 09:49 AM


All times are GMT -6. The time now is 12:25 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
Copyright Hotrodders.com 1999 - 2012. All Rights Reserved.