Key in BBC steel crank Question-help - 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> Engine
User Name
Password
lost password?   |   register now

Reply
 
LinkBack Thread Tools
  #1 (permalink)  
Old 09-26-2008, 12:07 PM
Registered User
 
Last photo:
Join Date: Jan 2008
Location: Washington State
Posts: 272
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Key in BBC steel crank Question-help

I have 7115 forged 396/427 crank. The key way for the
harmonic balancer is 1/4". Where can I find a stepped key
that goes from 1/4" to 1/8" for the balancer? the timing gear
key is good. This crank was on a blower motor and the 1/8"
OE key way was modified to 1/4", now I need to go back to
1/8". I have seen them before. it is just a regular 1/4" that
steps down to 1/8" one piece.
Help.
Thanks
Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
  #2 (permalink)  
Old 09-26-2008, 01:36 PM
OHD's Avatar
OHD OHD is offline
Member
 
Last photo:
Join Date: Sep 2008
Location: outhouse
Posts: 285
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
Applied technologies has the step keys, lots easier and stronger to just have the crank gear broached to 1/4
Reply With Quote Quick reply to this message
  #3 (permalink)  
Old 09-26-2008, 06:15 PM
Registered User
 
Last photo:
Join Date: Mar 2008
Location: Ringgold, Ga.
Posts: 442
Wiki Edits: 0

Thanks: 1
Thanked 15 Times in 14 Posts
Your crank formerly being out of a Blown BBC, you need to have it magged! Don't take the sellers word that he had it done or its OK. You might be sending it back to him and getting a refund.....
Reply With Quote Quick reply to this message
  #4 (permalink)  
Old 09-27-2008, 07:35 AM
OHD's Avatar
OHD OHD is offline
Member
 
Last photo:
Join Date: Sep 2008
Location: outhouse
Posts: 285
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
You know he had that done when it was turned to check straightness and tighten up the clearances then rebalanced for his components..
Reply With Quote Quick reply to this message
  #5 (permalink)  
Old 09-27-2008, 10:40 AM
Registered User
 
Last photo:
Join Date: Mar 2008
Location: Ringgold, Ga.
Posts: 442
Wiki Edits: 0

Thanks: 1
Thanked 15 Times in 14 Posts
Quote:
Originally Posted by OHD
You know he had that done when it was turned to check straightness and tighten up the clearances then rebalanced for his components..
Have a couple questions...if you smarter than an old guy like me.
Just this second ago (1/2 hour) I bought a Z-16, L-88/ZL-1
5140 std/std crank. Did the tuning ring test on her and it is stamped
"7115". Apparently this is cross-drilled, tuffrided with 7/16" bolts.
Plus this thing has the chamfered oil journels and chamfered mains, rods.
Suppose to use Clevitt chamfered bearings.
Does the 7/16" mean that the main caps have 7/16" bolts? Anything more you
could tell me would be great. This is for my 396 cast #3855962 block
4-bolt. She is a rare one. I was planning on boring out to 4.25" and making
me a 427 with the L-88 solid cam for my 65 Malibu.
Things to look out for in my build etc.. would be great. Plus this crank has been magged. I spent $500 cash. Think I got a great deal since they go for
more twice that much when you can find them. The is one on Ebay right now for $1800.
Anyway your knowledge/experience would be great.
Thanks....

I think he was only emphasizing the crank had been magged prior to his purchase of $500.00! After answering on many of his previous posts in the past, you get a feel for how a person conveys thoughts and expresses himself in speech and text. His statement of "I spent $500 cash", seemed to almost be an afterthought of the fact it had been magged as well as costing him $500.00....Many people will tell you what you want to hear when it comes to selling things, im sure you will agree! Just because the seller said so, and the fact that it was used in a blower application would raise a red flag for me and make me want to confirm that suspicion before I proceeded any farther. He also didn't have the crank rebalanced,from any statements that I read, he at first thought that 7/16" was referring to the main caps! So at that point he would not have known he needed to rebalance. Only later was the difference between the possible weight mismatch of the 7/16" rods and 3/8" rods brought to his attention for consideration....
Reply With Quote Quick reply to this message
  #6 (permalink)  
Old 09-27-2008, 12:06 PM
OHD's Avatar
OHD OHD is offline
Member
 
Last photo:
Join Date: Sep 2008
Location: outhouse
Posts: 285
Wiki Edits: 0

Thanks: 0
Thanked 0 Times in 0 Posts
I have learned to never offer more than 50% of scrap value on anyhting until I measure and test it. NEVER

Honest guys will let you have it magged PRIOR to selling it.

I offer to buy parts and pay for the magging, prior to money changing hands. If they balk, I pass on the "deal"

I magged a "perfect NOS L-88 crank" last month that lit up the mag machine more than any crank I have ever seen.. Seller told the guy "UPS must have damaged it" it was saved my my Dad, who had died 5 years ago, so it had to be good..

With the advent of eBay 10 years or so ago lots of these "gems" are moving from one scrap pile to another, far far away, with lots of money changing hands for these door stops..
Reply With Quote Quick reply to this message

Recent Engine 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:
If you do not want to register, fill this field only and the name will be used as user name for your post.
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
BBC Steel crank cast#7115 Fastest65 Engine 4 09-22-2008 07:34 PM
350 factory GM steel one piece real seal crank Mustangsaly Engine 3 04-25-2007 01:18 AM
crank key fitment blndweasel Engine 4 07-09-2004 08:58 AM
Forged steel or cast crank? MopaRV Engine 1 12-20-2002 04:33 PM
350 crank question stfinney Engine 4 12-03-2002 02:25 PM


All times are GMT -6. The time now is 12:43 PM.


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.