I bought a set of Model T reamers and have been trying to complete the set. The 3022 ˝ reamer was missing. A while back I bought a [ Ray Chicago 3022 ˝ reamer] which is suppose to be for the piston pin bushing. This one measures 0.750” but from what I was able to find out that from 1909 to 1923 it should be 0.9375 and from 1923 to 1927 it should be 0.8720. The first reamer I got was damaged by someone trying to clean it with a wire brush on a bench grinder. It is a dull as a hoe. Today I received a second one that is good and sharp except it is a taper reamer going from 0.590” to 0.704”. It is also marked 3022 ˝ plus marked 3014 or 8014. I can't see that a taper reamer could possibly be used on a piston pin bushing. But none of my other measurements match each other either. Any ideas on what I have and what I should be looking for?
Maybe i'm not reading this correct but the
taper reamer is (out) not for this job. I think
you need (although most don't like) but an
expandable reamer to get the inbetween numbers.
Myself I get good results with them, because
they carry a good range of numbers; just adjust
the reamer, mic it a little minus and go for it.
If still a no go, add another .001 to the reamer
and so on, thats the good thing about these.
golden rule "never turn a reamer backwards"
Does anyone have the piston pin bushing size for those years? I haven't found a list of sizes anywhere for any of the reamers. To fill in this boxed set I'd like to know what size to substitute for the missing 3022 1/2 reamer. Looks like it could be either of two depending on the year.
Here's some info from the 1923 Ford Dealers Data Book: http://www.mtfca.com/books/ford.htm#mot
"The piston pin is a hollow shaft 3-1/2" in length. (--) Before the wrist pin is inserted in the piston, the brass bushings are reamed to .740" to .741". The wrist pins are then fitted in the piston with a snug fit; this work is held to a half-thousandth of an inch."
Thanks Roger. That is what I have been looking for. Doug