Table of Contents
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Reamers
See also in the Sportsterpedia:
Types of Reamers
- Reaming: 1)
- The process of cutting a larger hole (to a precise measurement).
- The purpose is to not only make the hole the correct diameter but also to align it and square it with the part that goes into it.
- This usually means line reaming (aligning it with a hole, or bearing, opposite and at the other end of a shaft).
- Line Reaming: 2)
- Line reaming is the process of using additional support features to help provide shaft alignment. In this case of reaming cam bushings, it is the cam cover and its associated bushing that is used to “line up” the reaming tool so that the bushing hole in the right crankcase is cut to the correct size diameter, is properly located horizontally, and is cut square to the intended shaft axis.
L to R:
- Jig bore reamer.
- Chucking reamer. (this reamer has a chamfered which is a good choice for blind holes and typically used in a machining chuck)
- Bridge reamer. *this reamer has a lead in taper)
- Hand reamer (this reamer has a lead in taper just like the bridge type although the taper is much shallower)
- Tapered reamer.
- Shell reamer. (fits on an arbor)
Rocker Arm Bushing Reamer (94804-57)
See also Rocker Arm Bushing Replacement in the Sportsterpedia.
This reamer is specially designed for reaming the rocker arm bushings from 1957 to present.
It is the right length and cut to fit into the old bushing on one end of the rocker arm and ream the new bushing in the other end.
“Jims” makes this reamer referenced to HD part number (94804-57) 7) | |
Pre-Ream Hole Size Chart
Reamer diameter fraction - decimal (nominal) | Hole size to leave 2% | Drill size to leave 2% | Hole size to leave 3% | Drill size to leave 3% |
---|---|---|---|---|
1/8“ - .1250” | .1225“ | 31 | .1213” | 3.0mm |
9/64“ - .1406” | .1378“ | 29 | .1364” | 3.4mm |
5/32“ - .1562” | .1532“ | 24 | .1516” | 25 |
11/64“ - .1719” | .1685“ | 19 | .1667” | 4.2mm |
3/16“ - .1875” | .1838“ | 14 | .1819” | 15 |
13/64“ - .2031” | .1990“ | 5.0mm | .1970” | 9 |
7/32“ - .2188” | .2144“ | 5.4mm | .2122” | 4 |
5/64“ - .2344” | .2297“ | 1 | .2274” | 5.7mm |
1/4“ - .2500” | .2450“ | C | .2425” | 6.1mm |
17/64“ - .2656” | .2600“ | 6.5mm | .2576” | F |
9/32“ - .2812” | .2756“ | I | .2728” | 6.9mm |
19/64“ - .2969” | .2910“ | 7.3mm | .2880” | 7.25mm |
5/16“ - .3125” | .3063“ | 7.75mm | .3031” | N |
21/64“ - .3281” | .3215“ | 8.1mm | .3183” | O |
11/32“ - .3438” | .3370“ | 8.5mm | .3335” | 8.4mm |
23/64“ - .3594” | .3522“ | S | .3486” | 8.8mm |
3/8“ - .3750” | .3675“ | 9.25mm | .3638” | 23/64 |
25/64“ - .3906” | .3828“ | 9.6mm | .3789” | V |
13/32“ - .4062” | .3982“ | 10.0mm | .3941” | 25/64 |
27/64“ - .4219” | .4135“ | 10.4mm | .4092” | 13/32 |
7/16“ - .4375” | .4288“ | 10.8mm | .4244” | 27/64 |
29/64“ - .4531” | .4440“ | 11.2mm | .4395” | 7/16 |
15/32“ - .4688” | .4594“ | 11.6mm | .4547” | 29/64 |
31/64“ - .4844” | .4747“ | 12.0mm | .4699” | 15/32 |
1/2“ - .5000” | .4900“ | 31/64 | .4850” | 12.2mm |
33/64“ - .5156” | .5053“ | 1/2 | .5000” | 12.6mm |
17/32“ - .5312” | .5206“ | 33/64 | .5153” | 13.0mm |
35/64“ - .5469” | .5360“ | 17/32 | .5305” | 13.4mm |
9/16“ - .5625” | .5513“ | 35/64 | .5456” | 13.8mm |
37/64“ - .5781” | .5665“ | 9/16 | .5608” | 14.2mm |
19/32“ - .5938” | .5820“ | 37/64 | .5760” | 14.5mm |
39/64“ - .6094” | .5972“ | 19/32 | .5911” | 14.9mm |
5/8“ - .6250” | .6125“ | 39/64 | .6063” | 15.3mm |
41/64“ - .6406” | .6278“ | 5/8 | .6214” | 15.7mm |
21/32“ - .6562” | .6431“ | 41/64 | .6365” | 16.1mm |
43/64“ - .6719” | .6585“ | 21/32 | .6517” | 16.5mm |
11/16“ - .6875” | .6738“ | 17.0mm | .6669” | 16.8mm |
45/64“ - .7031” | .6890“ | 11/16 | .6820” | 17.2mm |
23/32“ - .7188” | .7044“ | 45/64 | .6972” | 17.6mm |
47/64“ - .7344” | .7197“ | 18.2mm | .7124” | 18.0mm |
3/4“ - .7500” | .7350“ | 18.5mm | .7275” | 18.3mm |
49/64“ - .7656” | .7502“ | 18.9mm | .7426” | 18.8mm |
25/32“ - .7812” | .7656“ | 19.3mm | .7578” | 3/4 |
51/64“ - .7969” | .7810“ | 19.7mm | .7730” | 49/64 |
13/16“ - .8125” | .7963“ | 20.1mm | .7881” | 25/32 |
53/64“ - .8281” | .8115“ | 20.5mm | .8034” | 51/64 |
27/32“ - .8438” | .8270“ | 20.8mm | .8185” | 13/16 |
55/64“ - .8594” | .8422“ | 21.25mm | .8336” | 53/64 |
7/8“ - .8750” | .8575“ | 21.6mm | .8488” | 27/32 |
57/64“ - .8906” | .8728“ | 22.0mm | .8639” | 55/64 |
29/32“ - .9062” | .8881“ | 22.5mm | .8790” | 7/8 |
59/64“ - .9219” | .9035“ | 22.8mm | .8942” | 57/64 |
15/16“ - .9375” | .9188“ | 23.25mm | .9094” | 29/32 |
61/64“ - .9531” | .9340“ | 23.5mm | .9245” | 59/64 |
31/32“ - .9688” | .9494“ | 24.0mm | .9397” | 15/16 |
63/64“ - .9844” | .9647“ | 24.4mm | .9549” | 61/64 |
1“ - 1.0000” | .9800“ | 24.75mm | .9700” | 31/32 |
3)
, 4)
, 6)
photo by Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1717904&page=3
5)
photo by Dr Dick of the XLFORUM http://xlforum.net/forums/showthread.php?t=1717904
7)
photos by Hippysmack