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Old 07-02-2007, 08:27 PM
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David Kirkham David Kirkham is offline
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Join Date: Mar 2001
Location: Provo, Ut
Cobra Make, Engine: Kirkham, 427
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Turn the crank 90 degrees again and read the number. Here it is +0.003 inches so we write a 3 on the bell housing. So, you can see we are -6 and +3 out in the lower right hand corner (in the photo) of the bell housing. So, we need to move the bell housing up and to the right. The easy way to remember how to move the bell housing is to always move it TOWARD the highest positive numbers. 3 is bigger than 1 so I want to move it toward the 3 (which is AWAY from the indicator--thus making the indicator read a LESSER number.) This is a little confusing, but you will get it if you think about it. Remember the 6 is actually negative and so it is SMALLER than the 0 so you want to move AWAY from the -6 and toward the 0--so, you want to move the bell housing UP.

The bell housing needs to be centered to within 0.005 TIR or Total Indicator Reading. This reading is 0.006 TIR in the up and down axis and 0.003 in the right and left axis. We try to get them to 0.002-0.003 TIR. So we will move the bell housing slightly.

David Kirkham, President Kirkham Motorsports
Manufacturer Aluminum Body Kit Cars and supplier to Shelby* for their CSX4000, CSX7000, and CSX8000 289 and 427 Cobra
*Kirkham Motorsports is not affiliated with Ford or Carroll Shelby or any of their trademarks.
"Fear is the thief of dreams."

Last edited by David Kirkham; 07-03-2007 at 10:37 AM..
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