The Ford Barn

kendall · 05-16-2011, 07:35 PM

i might have to drill some new mounting holes in my flywheel to except a new bolt hole pattern for a 10" long pressure plate. i have heard of guys doing this, wount this throw off the balance on the flywheel?....

kendall

David J · 05-16-2011, 07:53 PM

If you get it centered exactly and drill and tap all the holes exactly the same you shouldn't mess up the balance . A drill press with a stop would be a good idea for getting the holes all the same . David J

denverslim · 05-16-2011, 07:58 PM

Maybe drill out a few extra to lighten it up. Old skool...slim

richard crow · 05-16-2011, 08:01 PM

when you drill & tap it you have to have a counter sink for the special shoulder bolts get the proper bolts & mike & measure them so you do the job right

xix32 · 05-16-2011, 08:07 PM

this is how I did it, jig drilled a transfer drill fixture. I don't see how balance can be effected when the new pattern is equally spaced from the old one.

Russ/40 · 05-16-2011, 08:20 PM

Sponsored Links (Register now to hide all advertisements)

The change of pressure plate will put it out of balance. You need to rebalance with a new PP.

52merc · 05-16-2011, 08:44 PM

thats clever wouldnt have thought of doing it that way simple

Charlie ny · 05-16-2011, 08:47 PM

Kendall,
Gotta be CONCENTRIC. My comfort level is using a milling
machine and a center spindle. If you are located near western New
York I'll do it for free.
Charlie ny

05-16-2011, 07:35 PM	#1
kendall Senior Member Join Date: Mar 2011 Location: Northwest Iowa Posts: 117	drilling holes in the flywheel i might have to drill some new mounting holes in my flywheel to except a new bolt hole pattern for a 10" long pressure plate. i have heard of guys doing this, wount this throw off the balance on the flywheel?.... kendall

05-16-2011, 07:53 PM	#2
David J Senior Member Join Date: Jun 2010 Location: St Croix Falls WI Posts: 2,080	Re: drilling holes in the flywheel If you get it centered exactly and drill and tap all the holes exactly the same you shouldn't mess up the balance . A drill press with a stop would be a good idea for getting the holes all the same . David J

05-16-2011, 07:58 PM	#3
denverslim Senior Member Join Date: May 2010 Location: Ehh...Denver Posts: 196	Re: drilling holes in the flywheel Maybe drill out a few extra to lighten it up. Old skool...slim

05-16-2011, 08:01 PM	#4
richard crow Senior Member Join Date: May 2010 Posts: 1,770	Re: drilling holes in the flywheel when you drill & tap it you have to have a counter sink for the special shoulder bolts get the proper bolts & mike & measure them so you do the job right

05-16-2011, 08:07 PM	#5
xix32 Senior Member Join Date: May 2010 Location: 60 miles west of chicago,IL Posts: 190	Re: drilling holes in the flywheel this is how I did it, jig drilled a transfer drill fixture. I don't see how balance can be effected when the new pattern is equally spaced from the old one. Last edited by xix32; 04-21-2014 at 10:40 AM.

05-16-2011, 08:20 PM	#6
Russ/40 Senior Member Join Date: May 2010 Location: Santee, California Posts: 3,505	Re: drilling holes in the flywheel Sponsored Links (Register now to hide all advertisements) The change of pressure plate will put it out of balance. You need to rebalance with a new PP.

05-16-2011, 08:44 PM	#7
52merc Senior Member Join Date: May 2010 Location: new zealand Posts: 1,054	Re: drilling holes in the flywheel thats clever wouldnt have thought of doing it that way simple

05-16-2011, 08:47 PM	#8
Charlie ny BANNED Join Date: May 2010 Posts: 3,019	Re: drilling holes in the flywheel Kendall, Gotta be CONCENTRIC. My comfort level is using a milling machine and a center spindle. If you are located near western New York I'll do it for free. Charlie ny