dealer is going to fix it so its 'ok'.
Some are conservative and don't hot rod engines, some do, we pass thru once so do what you please. JMO

 

for all the derogatory comments about the stage IV build, i think they are on the wrong track.

this dilemma was due to human error, not the amount of horsepower or how much it would stress the motor. we'll never know how long or how many problems would have occurred down the road from the build. i tend to think to think things would have gone fine, depending on how much punishment was inflicted during the OPs riding style.

FWIW personally (and i don't have any idea what a stage IV build costs ), i'd buy a new S&S 124, or the harley 120r, figuring they were built for more demanding riding. i'd like more oomph than either of my 103s deliver, but i also value dependability.

over the years, from my first harley, a 57 sportster that would blow the doors off all my friends panheads, to my 51 panhead, to 76 shovel, to 80" evo, to 88" softail, to 96" softail, to my 103 police, and now 103 streetglide, even though i've been impressed with the increase in performance, they never could break the rear tire loose at a moments notice with the twist of the throttle like i wished for. i guess we compromise.

 

I have replaced / rebuilt / serviced several hundred carbs and or throttle bodies over the years and unless I removed the throttle plate screws myself I don't think I have ever tightened the screws in any of them. Checked that they were there maybe but don't recall checking them to see if they were tight. I call this a **** happens incident and can't say it is incompetence on the dealers part. More like a HD MOCO assembly issue. Might check the next time I do one after seeing this but most of these screws are intentionally upset (deformed) in the assembly process and I don't think they should be turned or FW after this is done.
Biggest impression here is the dealer volunteered to fix it.
Good Luck with it.

 

Ya, because nobody with a stock engine ever had a failure...

Sorry about the bad luck, glad somebody is stepping up and taking responsibility.

 

Any way to clean that up or repair? Would that mean a new engine?

 

It depends on what they find at teardown. I would want the oil drained while I was watching, with a fine mesh strainer to see what is in the oil.
Also have them cut open the oil filter to inspect for junk. If their engine guy is any good he would do this on his own, If they just want you to go away then it's another story. If there is a lot of metal in the oil and filter then if the dealer refuses to tear down and clean the motor I would ask for a warranty in writing.
Hopefully there isn't much in the oil and filter, and no missing pieces from cylinder damage.

 

If the piston got merely cracked from something in the chamber, then no, things wouldn't necessarily be in the front piston. But if the piston broke into multiple pieces, or had a hole punched through it, then it's much more likely for metal to be scattered throughout the engine.

It's rare to see a piston that is merely cracked.

 

What makes you so sure nobody with a stock engine ever had a failure?

 

You missed my point. Even stock engines fail. Anything mass produced will suffer a certain percentage of failures.

Leaving you engine stock guarantees nothing.

 

Wow!!?? What bunch of geezer hp haters?? Motor had an assembly/part failure, dealer is standing behind it. Stuff happens and it's being handed. Good news. As stated, can't tell on repairs until torn down? If only cracked piston ya got lucky...