Aluminum Flywheel

[GOSFAST]

Hi Joe, brought this back up to give you some sizes I finally got a chance to measure with respect to an OEM flywheel and an OEM pilot bushing!

This is NOT any aftermarket pieces, this is all Ford!

The flywheel bore for the pilot bushing measures 1.573" +/- .0001".

The pilot brg itself measures 1.574", also +/- .0001".

You can see the "press-fit" should be about .001" (nominal) The "press-fit" on the pieces in the photos below is EXACTLY .00125", "dead-on", no guesswork.

(Add) You cannot use "Verniers" (calipers) to get these accurate numbers, they just aren't accurate enough for this type work? Takes a "mike" and a good bore gauge.

Mart, thank you!

Thanks, Gary in N.Y.

P.S. Joe, on a side note, the tools left today, you'll have them tomorrow according to the Post Office!

[Mart]

Gary - typo on pilot brg diameter above...

[jrvariel48]

Originally Posted by GOSFAST

Hi Joe, brought this back up to give you some sizes I finally got a chance to measure with respect to an OEM flywheel and an OEM pilot bushing!

This is NOT any aftermarket pieces, this is all Ford!

The flywheel bore for the pilot bushing measures 1.573" +/- .0001".

The pilot brg itself measures 1.574", also +/- .0001".

You can see the "press-fit" should be about .001" (nominal) The "press-fit" on the pieces in the photos below is EXACTLY .00125", "dead-on", no guesswork.

(Add) You cannot use "Verniers" (calipers) to get these accurate numbers, they just aren't accurate enough for this type work? Takes a "mike" and a good bore gauge.

Mart, thank you!

Thanks, Gary in N.Y.

P.S. Joe, on a side note, the tools left today, you'll have them tomorrow according to the Post Office!

Thanks Gary I appreciate it!! Why does Ram make the flywheel opening 1.575?? I don't get it!!