These are the standard main bearings for the Formula Ford 1600 ("Kent/Cortina") engine. These bearings fit the standard 2.271" (57.69mm) bearing bore in the block. If your block has been line-bored to correct an alignment problem, you will need our .015" Oversize OD FF1600 Main Bearings (Part No. 1504). Main bearings are sold in sets of 10 (one set completes one 4-cylinder engine).
| Crankshaft Measurements for Main Bearing Sizes |
|---|
Bearing Size
(Nominal) | Crankshaft Journal
Diameter (inches) | Crankshaft Journal
Diameter (mm) | Bearing Part No. |
|---|
| Standard | 2.125" - 2.126" | 53.983mm - 54.003mm | 1502-Std |
|---|
1st Undersize /
10 Under | 2.115" - 2.116" | 53.729mm - 53.749mm | 1502-010 |
|---|
2nd Undersize /
20 Under | 2.105" - 2.106" | 53.475mm - 53.495mm | 1502-020 |
|---|
3rd Undersize /
30 Under | 2.095" - 2.096" | 53.221mm - 53.241mm | 1502-030 |
|---|
4th Undersize /
40 Under | 2.085" - 2.086" | 52.959mm - 52.984mm | 1502-040 |
|---|
Fits all Pre-crossflow (5 main only), crossflow, Fiesta, Lotus Twin Cam, and Cosworth BDA/BDD (block numbers 2731, 2733, 2737, 120, 681, 691, 701, 711, and 771).
