Is this junk

Frank Miller

Frank Miller

Well-known member
Got the crank cleaned up and noticed some damage around the hole on the rod journal. Quick measurement says rods have been turned 10 and mains 20. No cracks in the block so that's a plus. The guy I got the crank from will give me another one but I need to disassemble it.
 

Attachments

  • 20200201_163147.jpg
    20200201_163147.jpg
    34.8 KB · Views: 218
Clean it up, chamfer the damage around the oil hole, and you will be good to go as long as there is not a crack somewhere.
 
Is is a Ford or Merc. crank? Ford cranks are a dime a dozen, so it may pay to look for a better one, but I agree with Russ. Clean up the hole, machine it and run it if you'd like.

A guy at Hershey has a huge spot. Something around 8 spots. He had a tent that covered six of them. At each pole, he had a Ford crank tied to the rope. I asked him about his interesting choice of wind weights and he replied, "What else am I going to do with them?"

I got a good laugh from that.
 
I wouldn't worry about the oil feed bores as much as whether it will clean up at .030" under. You can chamfer the oil ports a good bit and not hurt function at all.
 
You can just chamfer the oil hole - heck, we do that with all our racing cranks anyway. Obviously it will need a regrind, but going to 20 on the rods should not be a big deal and getting to 30 on the mains - can still get bearings, so you should be good to go.

If it was mine, I'd remove the knock-in soft plugs on the rod throws and tap them for a threaded Allen plug - is the best way to go (don't have to worry about soft plugs getting blown out). Best of luck!
 
It could also be welded by the crank grinder and reground. Not junk Below is a photo of a drive shaft being welded on a crankshaft welder.
 

Attachments

  • Len Pritchard welding a drive shaft.jpg
    Len Pritchard welding a drive shaft.jpg
    54.2 KB · Views: 86
Too pitted for my liking. Especially in the seal area. Going to ask for another. Thanks for the help.
 

Attachments

  • 20200202_155045.jpg
    20200202_155045.jpg
    46.5 KB · Views: 61
  • 20200202_154942.jpg
    20200202_154942.jpg
    38.7 KB · Views: 63
I wonder how that happened. I tore a Merc. Engine apart that sat outside for years and the only part of the engine that wasn't rusted was the crank. Needed only turned .010. The rest including the block was junk.
 
Looks like a porous casting. I'll take it and run floaters. It would make a nice warmed up 99T.
 
You must log in or register to reply here.
Back
Top