bbc used piston question

Old 07-31-2012, 06:30 PM
  #1  
ejm
Senior Member
SENIOR BUILDER
Thread Starter
 
Join Date: Nov 2007
Location: indiana
Posts: 123
Default bbc used piston question

thinking about buying a set of used pistons, they are keith black 787 my motor is a stock crank and rods open chamber heads my question is that on kb website it shows these with a 4.25 stroke and 6.385 rod can i still use with a 4 in stroke and 6.135 rod?
ejm is offline  
Old 07-31-2012, 06:42 PM
  #2  
BEAST477
Senior Member
RACING JUNKIE
 
BEAST477's Avatar
 
Join Date: Feb 2007
Location: Michigan
Posts: 1,908
Default

No. Your piston will be .500 down in the cyl at TDC if I did the #'s right.
BEAST477 is offline  
Old 07-31-2012, 06:49 PM
  #3  
ejm
Senior Member
SENIOR BUILDER
Thread Starter
 
Join Date: Nov 2007
Location: indiana
Posts: 123
Default

k but if a guy picks them up for 125 is it worth finding a set of 6.535 rods?
ejm is offline  
Old 07-31-2012, 06:54 PM
  #4  
BEAST477
Senior Member
RACING JUNKIE
 
BEAST477's Avatar
 
Join Date: Feb 2007
Location: Michigan
Posts: 1,908
Default

You would still be down in the cyl and I forgot in my first post crank throws to piston skirt clearance might still be an issue.
BEAST477 is offline  
Old 07-31-2012, 06:56 PM
  #5  
ejm
Senior Member
SENIOR BUILDER
Thread Starter
 
Join Date: Nov 2007
Location: indiana
Posts: 123
Default

ok thanks for saving me some cash
ejm is offline  
Old 07-31-2012, 07:01 PM
  #6  
BEAST477
Senior Member
RACING JUNKIE
 
BEAST477's Avatar
 
Join Date: Feb 2007
Location: Michigan
Posts: 1,908
Default

No problem. If you have a reputible engine builder close by that you trust you can check with him also.
BEAST477 is offline  
Old 08-01-2012, 10:52 PM
  #7  
maxpower671
Senior Member
SENIOR BUILDER
 
Join Date: Dec 2005
Posts: 117
Default

really good question,

and even better answers! Solid!!!!!!!!

unless you have a good use, or want to put them on the shelf for later.....pass........
maxpower671 is offline  
Posting Rules
You may not post new threads
You may not 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


Contact Us Archive Advertising Cookie Policy Privacy Statement Terms of Service