Pinion shaft scoring.... Is my motor going to blow???
This is my first time diving into engine work, which I'm not scared to do, just not much experience. From what I've read I need to check run out, which I don't have a gauge to do right now. Apparently 0-0.10" run out is acceptable?
I work at an aircraft machine shop doing in-house HVAC so I'm hoping I can find a gauge to check the run out tomorrow, but I just want some opinions.
I guess I just want to hear from some more experienced people what they have seen in these situations. Do you see scoring on the shaft even when it's still in the acceptable range? What exactly causes this? If it is out of the tolerable range, if I keep running it like this what can I expect? If it's on the very end of the tolerable range, are there there I should keep an eye on? Am I way over thinking this and it's not a huge deal?
Lol sorry for all the questions but I'm just worried I'm going to be looking for a crate motor lol. Here's some pictures of the pinion shaft. Thanks for all the help!
Last edited by 702; Mar 20, 2019 at 08:20 PM.
__________________________________________________ ____
For ROCKOUT information & purchasing please click HERE For all Twin Cams and Evo Big Twins & Sportsters
Ordering & info http://www.rockout.biz On ebay! ... CLICK HERE
Also on amazon.com...
Imitated, never equaled... ROCKOUTS!








