Crankshaft Turning Nut

A crankshaft turning nut or similar option for turning the crankshaft without disturbing the degree wheel is definitely recommended. For the Ford Y, I am not familiar with an off the shelf item that allows for turning the crankshaft during the cam degree in process that works without some kind of modifications.

For the Ford Y, I broached an additional and wider key slot in an already existing SBC crankshaft turning nut I had on hand. This allowed the same nut to still be used on a SBC without the additional slop that would be evident if just broaching the existing slot wider.

Machining or grinding a ¼” woodruff key so it’s 3/16” at the crankshaft surface would allow someone to use an unmodified SBC crankshaft turning nut on their Y crankshaft. Another option is to put bolts in the flywheel end of the crankshaft and use a long bar to turn the crankshaft. Yet another option is to use a crescent wrench on the snout where the smooth jaw catches the ¼” woodruff key and turn it that way. Using a pipe wrench on the crankshaft snout is a big no no. Here’s a picture of the modified SBC turning nut.

Lorena, Texas (South of Waco)

Author	Message
Daniel Jessup	Posted 3 Years Ago
Supercharged Group: Forum Members Last Active: 3 days ago Posts: 2.0K, Visits: 129.6K	Does anyone have an off-the-shelf option for a crankshaft turning nut for our beloved Y Blocks? Would help me degree the camshaft during this upcoming assembly... thanks Daniel Jessup Lancaster, California aka "The Hot Rod Reverend" check out the 1955 Ford Fairlane build at www.hotrodreverend.com
	Reply Quote
Reply
Ted	Posted 3 Years Ago
Co-Administrator Group: Administrators Last Active: Last Week Posts: 7.4K, Visits: 205.4K	A crankshaft turning nut or similar option for turning the crankshaft without disturbing the degree wheel is definitely recommended. For the Ford Y, I am not familiar with an off the shelf item that allows for turning the crankshaft during the cam degree in process that works without some kind of modifications. For the Ford Y, I broached an additional and wider key slot in an already existing SBC crankshaft turning nut I had on hand. This allowed the same nut to still be used on a SBC without the additional slop that would be evident if just broaching the existing slot wider. Machining or grinding a ¼” woodruff key so it’s 3/16” at the crankshaft surface would allow someone to use an unmodified SBC crankshaft turning nut on their Y crankshaft. Another option is to put bolts in the flywheel end of the crankshaft and use a long bar to turn the crankshaft. Yet another option is to use a crescent wrench on the snout where the smooth jaw catches the ¼” woodruff key and turn it that way. Using a pipe wrench on the crankshaft snout is a big no no. Here’s a picture of the modified SBC turning nut. Lorena, Texas (South of Waco)
	Reply Quote

Crankshaft Turning Nut

Crankshaft Turning Nut

Threaded View

Reading This Topic