Quote:
Originally Posted by Walt Dupont--Me.
I've bunished 100's of rod bushings with the Sunnen machine. WE also had a Tobin Arp machine to resize the pin pushings for C-C . You clamped the rod in the machine on the big end with an expandable clamp, set the micromerter scale for the correct C-C and then bore the bushing. We used this machine mostly for big engines, Mack, Cummin, Detroit, Ect. Walt
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Hi Walt, I still have access to the T/A machine, but don't really use it anymore. It is an excellent tool specifically for this procedure!
As you would know, it has "super-accurate" bearings and "air-operated" centering mandrels for both ends of the rods!
We have now have conn rod fixtures for the CNC equpiment!
(Add) If I could just bring out an important fact here, when "totally" reconditioning these Flathead rods today, you really need to consider whether it is cost effective or not! The price on aftermarket rods, although seeming somewhat expensive, becomes very relevant. Basically speaking, with "new" rods you have a lot to gain! And above to "FlatJack", yes you can accomplish that task, but again, you need to weigh the costs! We can actually make our own bushings, in fact, we often have. One more note, you have a limited amount of material to work with around the "eye" of OEM Flathead rods!
Thanks, Gary in N.Y.
P.S. The Tobin-Arp mentioned here was accurate and you had 100% control over the C/C. If it needed to be changed it was easy. You couldn't always get the desired C/C, depending on the overall condition of the individual rods. Didn't make a huge difference though, if you needed to alter it you could at least make them all identical (equal)!