I pretty much read verbatim what Challenger340 had posted. He had not ground the crank at that point. Told him the exact tolerances I was looking for, per the previous posts.
If he did not get it found quite far enough, then he can always go a little further.
Unfortunately, I do don’t have any gearheads in my friend circle, so nobody to bounce ideas off of or to ask about good machine shops. Even within a machine shop you may have good and not so good results. Close to where I grew up, we had Swanson Automotive and Dale was very highly regarded. Was a Chevy guy, but very bright. That was lots of years ago and he has long since passed. Don’t know anything about the business anymore, so have to rely on good feedback from others and my own comfort level to find someone that knows what they are doing and they do a meticulous job.
Hopefully the guy I am using does an outstanding job. He is, as someone else said, working on tractors one day and cars on another day. I actually did see a crank out of a Farmall M when I dropped my block off.
So, what if he installs the mains and mics the inside of the bearings and the size of the main journal? What specific measurement am I looking for? So, CuriousYellow said .0030 to .0035. Challenger said .0030. When we talked about main bearings, someone liked the Speed Pro 119M, because they gave about .0005 more clearance. Do I want .0030 and with these bearings will have .0035 clearance? Or mic everything out and .0030 is exactly what I want? Is .0025 clearance on the rods the exact clearance I want? Just want to make sure when I talk to the machinist, I can tell him exactly what I want to see.
Still waiting on the rod bearings and pistons, so most likely won’t be seeing him for another week or 10 days.
I appreciate all the feedback and am trying to pick it all up. I know I sound a lot smarter every time I talk to the machinist.
