Oversized rocker shafts

[1970 XLCH]

Does anyone know if anybody is making oversized rocker arm shafts for Shovelheads ( aprox .005 ) ? Thank you , Mike

[41craig]

Mike; I checked my sources and did not find o.s. shafts. Normally you replace and size new bushings in the rocker arms. The problem for a person doing their own work is the $ 172.75 dealer priced reamer.
Craig

[TomL]

Lots of Industrial Tool Suppliers with reamers and priced so a hobby shop can afford one, 25-35 dollar range but you may need a Bridgeport or Lathe to properly complete re bushing to size.

[T. Cotten]

Lots of Industrial Tool Suppliers with reamers and priced so a hobby shop can afford one, 25-35 dollar range but you may need a Bridgeport or Lathe to properly complete re bushing to size.

Sorry to get out of my Zodiac, TomL!

But reamers don't usually need a machine, if their cutting edge is over-length enough to pilot from both bearing surfaces.

My hopes are somebody can link us to a source of such, even if semi-affordable, because I need just shy of a quarter-incher of four-inches or more,..
seriously.

Thanks for the hope!

....Cotten
PS: There used to be a machine shop in the next town downroad (not even the "highway") that did such things for me perfectly. (*sigh*)

[TomL]

Reamer

s-l1600.jpgs-l1600.jpg

[TomL]

This style needs to be "chucked" in a machine and is what I was referring to in sizing rocker arm bushings that have been replaced.

[T. Cotten]

Of course, TomL!

I am suggesting that a reamer with a flute length longer than the rocker arm would make it much simpler.

Then you wouldn't need to figure out how to fixture the arm;
Just hold the reamer in a vise, and twist the arm on by hand.

I always Sunnen-honed shovel bushings anyway, but they don't make a 1/4" mandrel long enough for carbs.

So I must commission a long reamer that will align skewed bushing bores before I hone-finish.

....Cotten

[TomL]

I see what are driving at, "simple" anyone can, who grasps basic machining, can make it happen. Ah the perfect world. I sure wished I hadda moved there when I was younger! :-)