Parkka
Well-known member
- Joined
- Jan 12, 2019
- Messages
- 129
- Reaction score
- 13
- Location
- New England
- My Car
- 73 Mustang Convertible
[url=https://ibb.co/cgCFb3N][img]https://i.ibb.co/j6WMVfL/IMG-20190713-145003409.jpg[/img][/url]
When the engine was installed by the machine shop, two Prothane Motor mounts (6-503) were installed to replace the original worn ones from Ford. According to the machine shop, the Prothane mounts have a slightly lower profile than the Ford originals due to the polyurethane material. As a result, a clearance of approx 1/8 of an inch was now created between the oil pan outer corners and the cross member. My question is what should the proper clearance distance be on a 302 engine to the crossmember?
The machine shop would like to install 1/4 inch plates between the motor mounts and the engine block which are shown below (black). Also below is a photo of the present clearance between the oil pan and the crossmember (1/8 inch) without the plates. The plates would raise the engine; hence an increase in the clearance would occur. They are not worried about the drivetrain, but rather any lateral torqueing of the engine during startup and whether or not the oil pan will contact the cross member if the plates are not installed. Below is the Prothane motor mount and the black 1/4 inch plate. Numerous phone calls to Prothane have been made where they indicate the mounts are the correct ones.
The machine shop would like to install 1/4 inch plates between the motor mounts and the engine block which are shown below (black). Also below is a photo of the present clearance between the oil pan and the crossmember (1/8 inch) without the plates. The plates would raise the engine; hence an increase in the clearance would occur. They are not worried about the drivetrain, but rather any lateral torqueing of the engine during startup and whether or not the oil pan will contact the cross member if the plates are not installed. Below is the Prothane motor mount and the black 1/4 inch plate. Numerous phone calls to Prothane have been made where they indicate the mounts are the correct ones.