Jesus man, don't listen to these answers. The damn fight was only 12 minutes long before Kimura submitted Helio (actually, they threw in the towel, Helio didn't tap) with a reverse-ude-garami (now called the kimura lock).
And depending who you ask, the fight is either heard as "Helio was the smaller man" or "Kimura got lucky"...etc etc.....BJJ guys defend Helio to the death and Judo guys do the same for Kimura
While it's true that Kimura was heavier than Helio, it was Helio that challenged him (also should be noted that Helio touted BJJ as an art that was "made for the smaller man to overcome a larger one"). Kimura threw Helio REPEATEDLY with Ippon seonage, osoto gari, etc, trying to knock Helio out. 12 minutes later, when he was unable to do so, Kimura got him in a Kami-shiho-gatame pin (north-south) and started smothering Helio, when Helio pushed him up, Kimura applied the arm lock to his exposed arm. Helio refused to tap at which point Kimura had no choice but to apply more pressure until his elbow broke.
THE FILM: Only about 2-3 minutes of the fight exists (which is probably what you've seen). You won't find any more than that....look all you want. Reason being is unknown, but the fact remains; that's all there is of the fight.
BEFORE ANYONE: starts going off on the Judo/Jiu-Jitsu vs. thing; I'm just going to say that it's known that Helio/Carlos Gracie invented BJJ and ARE/WERE badass, but Kimura is widely considered the best Judoka that ever lived........sooooo, that being said...have at it, it's one fight in history and it was a good one.