For that cost, tear it done, plug and weld the crank, upgrade any weak links that are assoiciated with it, clean up the heads and buy two new rear tires for spares. Steve Cole (TTS) bought a 120R and tore it down to see what kind of workmanship went into the 120R and he found some things and "updated" them before putting the engine into his Street Glide, some of his findings were "disturbing". Check out his findings on:

http://www.cvoharley.com/smf/index.php?topic=64756.0

 

Big Dog...Thank-you! That was a telling read! I will take your advice, and tear her down before she goes in. I know it will be a year before it sees the motor mounts anyway, and that will give me the time to make sure it's in there for the duration.

I am so darn excited though...

 

Hey no problem , glad it could give you some info, if you do tear into it, let us know what, if anything, you find because it is an engine that might become more popular as time goes by. Nice find!!!!

 

I think I'm getting the 58 mm or was that 56 mm... gawd i need a notebook.

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Harley has a 58mm, HPI has a 55 mm if you send them your electronics. You can also send them your 58 and they can clean up the 58 and put a larger intake on the backside of it, but they request you test it first to be sure it operates correctly.

I put the 55mm on my wifes 2011 limited ultra with the 5.3gm/sec injectors and the ventilator air cleaner with bassani road rage 2 into 1. made 130 hp and a 120 tq. Runs great and only needed to add in the heavy spring from harley for the clutch barely noticable pull difference.

 

what a find the 120 is on my radar congrats I saw 120 sitting on my dyno mech bench he had the lifters out of it some one wanted a diffrent cam motor had 5000 miles on it it comes from harley with jims lifters hydro solids the lifters were showing more ware on the rollers for only 5000 miles every engine builder I have ever talked about builds have said they stay with the stock harley lifters.