Long HS40 crankshaft

[capguncowboy]

I recently picked up a lighted Rupp engine that was supposed to be "easy to get it going". Turns out, it's seized up and to top it off, the end of the flywheel side of the crank was cracked. When I put a flywheel puller on it, it busted the threads.

So that I can get this engine going and maybe recoup something from the project, I'm looking for the right crankshaft (Arma steel, long PTO).

Any help would be appreciated.

Thanks!

Here's a picture of my plight. Maybe it can be fixed?

 

[fistfullabar]

Hey capguns what is ARMA steel?

 

[caver1510]

I have one just like it....gonna try to weld new threads on it. I will post pics of how I will do it.

 

[capguncowboy]

I have one just like it....gonna try to weld new threads on it. I will post pics of how I will do it.

If that works out for you, I might send you this one to see if you can fix it for me.

 

[caver1510]

If that works out for you, I might send you this one to see if you can fix it for me.

Hang on too it and I will let ya know

 

[MB165]

Those threads are so easy to damage, I have one thats stripped too. One of the first projects im gonna do when I get my new lathe next month is to counter bore that end, and install a grade12 stud. .....if it works, ill hook ya guys up

 

[chatten63]

MB165 it will work. But put a left hand thread on new stud and left hand thread in crank end. I have done this already with a grade 8 bolt. Left hand thread for crank end and leave right hand thread for flywheel nut.

 

[Mark G]

Any help would be appreciated.

Thanks!

I would start by using a flywheel knocker instead of a puller, I've been using them for years and have never damaged a flywheel or crank:thumbsup:

 

[capguncowboy]

I would start by using a flywheel knocker instead of a puller, I've been using them for years and have never damaged a flywheel or crank:thumbsup:

I figured since the puller was made by Tecumseh that it would be the best tool to use. :shrug:

 

[Havasu Dave]

I figured since the puller was made by Tecumseh that it would be the best tool to use. :shrug:

Of course back in the day, the guy at the shop would just grab another crankshaft and bill the customer the $12 it cost.

MB and Rick's idea of a stud seems like a good fix.

 

[caver1510]

https://www.youtube.com/watch?v=nyZ1Ug28YD4

I saw this guy on You Tube turning his crankshaft with a drill at about 2:45 into the video...that is how mine broke....I won't do it again