ford 9 inch

Old 06-11-2012, 05:16 PM
  #1  
hotrod1994
Senior Member
EXPERT BUILDER
Thread Starter
 
Join Date: Jul 2009
Location: nekoosa wisconsin
Posts: 308
Default ford 9 inch

anyone know how much the pinion is offset on a 9 inch compared to an 8.5 10 bolt and do i have to center the pinion or can it be offset by ? amount and work fine ?
thanks logan
hotrod1994 is offline  
Old 06-12-2012, 05:43 AM
  #2  
roadkill2
Senior Member
RACING JUNKIE
 
Join Date: Jan 2012
Posts: 628
Default

In Theory, a drive line is supposed to be as straight as is possible, both vertically and laterally. Generally vertical is set so that the driveshaft will be it's straightest when loaded (Torque Applied). Lateral is kind of a "No Brainer", and should align with the centerline of the crankshaft, or at least as close to it as possible.

U-Joints aren't intended to compensate for mis-alignment of driveline components, but to allow for the movement of the suspension. Granted, we get by with a lot of mis-alignment, but according to all of the engineering I've been schooled on, the straighter, the better . .

Plus, Just to reitterate, your whole rear suspension works off the radius created by the centerline through the front U-Joint. If your rear suspension isn't designed to work through that radius it will be in a bind and will not function properly.

Based upon prior experience, I'll expect a lot of differing opinions on this particular subject.
roadkill2 is offline  
Old 06-12-2012, 09:37 AM
  #3  
hotrod1994
Senior Member
EXPERT BUILDER
Thread Starter
 
Join Date: Jul 2009
Location: nekoosa wisconsin
Posts: 308
Default

ok you wouldnt know how much the pinion is off set would ya?
hotrod1994 is offline  
Old 06-12-2012, 04:02 PM
  #4  
TheYellaBrick
Senior Member
RACING JUNKIE
 
TheYellaBrick's Avatar
 
Join Date: Mar 2008
Location: Emmett, Idaho
Posts: 7,334
Default

http://www.currieenterprises.com/ces...mrearends.aspx

http://www.enjenjo.com/9inch.html#pinion

http://www.kevinstang.com/Ninecase.htm
TheYellaBrick is offline  
Old 06-12-2012, 06:27 PM
  #5  
gearhead1011
Senior Member
EXPERT BUILDER
 
gearhead1011's Avatar
 
Join Date: Jan 2004
Location: Shepherdsville, KY
Posts: 313
Default

If you want to know what the offset is from the center of the case I think it's right at 2 inches.
gearhead1011 is offline  
Old 06-12-2012, 08:03 PM
  #6  
TheYellaBrick
Senior Member
RACING JUNKIE
 
TheYellaBrick's Avatar
 
Join Date: Mar 2008
Location: Emmett, Idaho
Posts: 7,334
Default

Unless you offset the drive line/engine/trans you're gonna have a short axle on the drivers side and 2" longer one on the passenger side.
TheYellaBrick 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 - Do Not Sell My Personal Information -