Grannas Racing Rotary Bellhousing Offset dowel pins. Used when you have more than .005 runout on your bellhousing index.
These high quality offset dowels were designed in house to be superior to the competition. These dowels have a heavier wall thickness and a flathead screwdriver slot to turn them. This slot also helps visually align to the angle of your bell housing offset. These will fit any 15mm diameter dowel hole, but were designed specifically for 13B 20B and other rotary applications. No shortening or other modifications needed.
When selecting an offset dowel, the offset dowel should be roughly half the total runout you have. See chart below
WHAT SIZE DO YOU NEED????
Out of index range: .005 to .012
USE SIZE .004
Out of index range: .012 to .020
USE SIZE .008
Out of index range: .020 to .028
USE SIZE .012
Out of index range: .028 to .036
USE SIZE .016
Out of index range: .036 to .044
USE SIZE .020
TECH TIP:
To remove your stock dowels, i recommend soaking them in a penetrating oil and let them sit overnight. Use a pair of heavy duty vice grips and slowly work them back and forth. If the get tight, heat applied to the block around the dowel may be needed
TECH VIDEO:
| Offset Size | .004, .008, .012, .016, .020 |
|---|
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