FrontEngineDragsters.Org Forum

Drag Racing Discussions => Front Engine Dragsters => Topic started by: PSweeney on September 07, 2015, 05:24:32 AM

Title: 9in pinion bolt centers
Post by: PSweeney on September 07, 2015, 05:24:32 AM

Hi guys, anybody have a drawing or dimension of the bolt hole centres for a 9in pinion support. thanks Phil

Title: Re: 9in pinion bolt centers
Post by: dreracecar on September 07, 2015, 06:52:48 AM

As I found out recently, M/W is different then stock Ford

Title: Re: 9in pinion bolt centers
Post by: PSweeney on September 07, 2015, 07:06:37 AM

mines a Strange center section and pinion support, do these differ from stock ?

Title: Re: 9in pinion bolt centers
Post by: dreracecar on September 07, 2015, 09:33:31 AM

The M/W rotated the bolt circle to clear something. Found this out after making a pinion support with a stock Ford case for mock-up and then the customer said the plate did not go on when he put the race unit in the car.
 The problem with what you are asking is that there are different ways to get measurment , either Datum or X-Y cord and your ability to transfer those to the material. Do you have a pinion shim that you can scribe from?

Title: Re: 9in pinion bolt centers
Post by: GlennLever on September 08, 2015, 03:34:42 AM

How about a paper gasket?

Title: Re: 9in pinion bolt centers
Post by: wideopen231 on September 08, 2015, 03:55:06 AM

Two more ways to get pattern.Transferr punch using the pinion support. Mark,drill and  then mark and drill another .I like to do one at at time using bolt thru holes already drilled.

Another is to have some studs center drilled just enough to set a calipers tips into and take measurements.not perfect but will get you within a cpl thousandths.

Title: Re: 9in pinion bolt centers
Post by: PSweeney on September 08, 2015, 04:36:49 AM

thanks guys I now have a drawing to work from