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Tractor Pulling Discussion Board

stroke / clearancing tool

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Posted by wi50 on March 09, 2014 at 09:08:41 from (

Here's a simple tool I made up for clearancing blocks, or

checking to see what fits when useing different rod or stroke

combinations or different blocks. I just made arms with hole

centers for 1/2 stroke foe example a 6" stroke is a 3" offset, or

3" center to center on the holes. I made different slugs to fit

different main bearing bores and rod end bores of different


I don't know if it's NATPA legal to use when building a motor or

not, but it sure is handy. Maybe a few of you will make

something similar or have made something to make the job

easier. I just hate mock up, grinding, clean up, over and over. And I get way to many questions of what stroke fits with what rod in this block or that block. I can check things out ahead of time and I like to keep a greater cap angle on the rods when possiable, it makes for a bit stronger rod.

I made this tool up and send it out to people I'm working with so they can check and do a little planning for those who are building their own engines or I'm helping them with the planning, selling them parts, rotating assemblies etc.

This post was edited by wi50 at 09:15:44 03/09/14 2 times.


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