Measuring End-Float For Newly Modified End Cap
If you own an engine that is currently fitted with outdated bi-metal (thin bearing surface) style thrust washers, you may want to consider updating to our tried and true solid alloy thrust washers. If you are an unfortunate owner who's engine [main bearing end cap] has been damaged as a result of worn out thrust washers, or perhaps you are a vintage racer who is heavy on the clutch and feel the need to upgrade, you may want to consider having your end cap repaired and/or modified to hold a new thrust washer to form a full circle thrust bearing setup. By doing this, you will improve your thrust load capacity.
The end cap will need to be shipped to Custom Thrust Washers. We will modify the end cap to remove any damage and provide a thrust bearing mounting surface for a new thrust washer. The end cap will also include three tapped holes for mounting the new thrust washer using countersink brass screws (provided). The new thrust washer will include three countersink holes that match the holes of the newly modified end cap. Once the end cap has been repaired/modified, it is then shipped back to the owner for them to take necessary measurements to determine what thrust washer thicknesses they will need to order to achieve their desired crankshaft end-float clearance.
Below are some examples for measuring to determine thrust washer thicknesses.
1) Insert a thrust washer of a known thickness into the usual location at the front side of the bearing journal.
2) Add a second thrust washer of a known thickness into the usual location at opposite (rear) side of the bearing journal.
3) Using one of the two measuring instructions outlined below, determine the total movement of the crankshaft. Measure three times for repeatability sake, and document your readings, including the thicknesses of the two thrust washers used when taking the readings.
Click Here - Crankshaft Movement Using Dial Indicator
Click Here - Crankshaft Movement Using Telescoping Gage
4) Once your end cap has been modified and returned to you, you can take the same readings by removing the thrust washer from the rear engine block half, and then installing it into the end cap half, and then take the same measurements again to measure how much crankshaft movement for the rear end cap half. Measure at least three times for repeatabilty sake, and record you measurements.
Please note: Since the damaged/modified end cap surface is milled down to remove the damage (different in all cases) and to provide a suitable nest for the new thrust washer, it will not be the exact thrust bearing surface to crankshaft flange surface distance as the engine block half. Therefore, it is important that we take end float measurements for both halves separately to assure we obtain the correct clearances. This is why you will need to take separate measurements for both upper and lower positions of the rear side of the bearing journal.
If you own an engine that is currently fitted with outdated bi-metal (thin bearing surface) style thrust washers, you may want to consider updating to our tried and true solid alloy thrust washers. If you are an unfortunate owner who's engine [main bearing end cap] has been damaged as a result of worn out thrust washers, or perhaps you are a vintage racer who is heavy on the clutch and feel the need to upgrade, you may want to consider having your end cap repaired and/or modified to hold a new thrust washer to form a full circle thrust bearing setup. By doing this, you will improve your thrust load capacity.
The end cap will need to be shipped to Custom Thrust Washers. We will modify the end cap to remove any damage and provide a thrust bearing mounting surface for a new thrust washer. The end cap will also include three tapped holes for mounting the new thrust washer using countersink brass screws (provided). The new thrust washer will include three countersink holes that match the holes of the newly modified end cap. Once the end cap has been repaired/modified, it is then shipped back to the owner for them to take necessary measurements to determine what thrust washer thicknesses they will need to order to achieve their desired crankshaft end-float clearance.
Below are some examples for measuring to determine thrust washer thicknesses.
1) Insert a thrust washer of a known thickness into the usual location at the front side of the bearing journal.
2) Add a second thrust washer of a known thickness into the usual location at opposite (rear) side of the bearing journal.
3) Using one of the two measuring instructions outlined below, determine the total movement of the crankshaft. Measure three times for repeatability sake, and document your readings, including the thicknesses of the two thrust washers used when taking the readings.
Click Here - Crankshaft Movement Using Dial Indicator
Click Here - Crankshaft Movement Using Telescoping Gage
4) Once your end cap has been modified and returned to you, you can take the same readings by removing the thrust washer from the rear engine block half, and then installing it into the end cap half, and then take the same measurements again to measure how much crankshaft movement for the rear end cap half. Measure at least three times for repeatabilty sake, and record you measurements.
Please note: Since the damaged/modified end cap surface is milled down to remove the damage (different in all cases) and to provide a suitable nest for the new thrust washer, it will not be the exact thrust bearing surface to crankshaft flange surface distance as the engine block half. Therefore, it is important that we take end float measurements for both halves separately to assure we obtain the correct clearances. This is why you will need to take separate measurements for both upper and lower positions of the rear side of the bearing journal.
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