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FF1600 Main Bearings +.015 OD

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These special bearings have a .015" oversize outside diameter for use in Formula Ford 1600 ("Kent/Cortina") engine blocks that have been line-bored. Line boring cleans up misalignment in the main saddles. Ford even used the technique on many new blocks installed in new cars, to prevent scrapping otherwise good blocks. Many of these blocks are still in use today, though the special bearings are becoming harder to find.

Q: How do I know if my block has been line bored?
A: The ID of the main bearing saddles measures 2.286" / 58.07mm in a bored block (2.271" / 57.69mm in a non-bored block). Bored blocks are often (but not always) stamped "015" somewhere on a main bearing web or oil pan rail.

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 1504-Std
1st Undersize /
10 Under
2.115" - 2.116" 53.729mm - 53.749mm 1504-010
2nd Undersize /
20 Under
2.105" - 2.106" 53.475mm - 53.495mm 1504-020
3rd Undersize /
30 Under
2.095" - 2.096" 53.221mm - 53.241mm 1504-030
4th Undersize /
40 Under
2.085" - 2.086" 52.959mm - 52.984mm 1504-040


We also offer Standard Main Bearings (Part No. 1502) for use in blocks that have not been line-bored.

Enter desired order quantities below, then click the "Add selected quantities to cart" button.

Order Qty
Part No.
Desc.
Price
Status

1504-010/15

FF1600 Main Bearings .010 ID/ +.015 OD

$124.99In Stock

1504-020/15

FF1600 Main Bearings .020 ID/ +.015 OD

$124.99In Stock

1504-030/15

FF1600 Main Bearings .030 ID/ +.015 OD

$124.99In Stock

1504-040/15

FF1600 Main Bearings .040 ID/ +.015 OD

$124.99In Stock

1504-STD/15

FF1600 Main Bearings -Std ID/ +.015 OD

$124.99In Stock
 
Related Product Groups
FF1600 Engine Bearings