The Ford Barn - View Single Post

Pete · 05-06-2021, 05:15 PM

It is a very poor idea to use a fiber gear for replacement. Especially an NOS one that could be 60 or 70 years old. An aluminum gear is very cheap insurance.
As far as aligning the marks, if you are off 3/32 (.093) of an inch it is only 4 degrees and you will never feel that in the seat of your pants on a stock engine.
The accumulated manufacturing tolerances sometimes added up to more than that.
It does NOT require any special tools to install one of these gears. A 5 ton HAND arbor press is not considered a special tool in a machine shop.
It takes exactly 43 seconds to set a cam in the press, place and align the gear and press it on.

As a side note, aluminum gears come with a line scribed in the bore.

05-06-2021, 05:15 PM	#8
Pete Senior Member Join Date: May 2010 Location: Wa. Posts: 5,409	Re: Installing Cam Gear on 1936 Camshaft It is a very poor idea to use a fiber gear for replacement. Especially an NOS one that could be 60 or 70 years old. An aluminum gear is very cheap insurance. As far as aligning the marks, if you are off 3/32 (.093) of an inch it is only 4 degrees and you will never feel that in the seat of your pants on a stock engine. The accumulated manufacturing tolerances sometimes added up to more than that. It does NOT require any special tools to install one of these gears. A 5 ton HAND arbor press is not considered a special tool in a machine shop. It takes exactly 43 seconds to set a cam in the press, place and align the gear and press it on. As a side note, aluminum gears come with a line scribed in the bore.