Comparison between the uncut R-Rated Version by Virgin Vision and the uncut and not rated DVD by e-m-s (Unrated).

There are a total of 7 differences adding up to 7 seconds.:

3 cuts = 6 seconds.
1 alternative scene = 1 second.
3 alternative scenes without running time difference

31 min
The second shot of Sally cutting her own belly open is a bit different in the two versions.
No difference in running time

R-Rated	Unrated

31 min
The Unrated shows two shots of Sally's intestines hanging out of her belly with a cut to George in between. The R-Rated shows a shot of Sally's pain-distorted face.
No difference in running time

R-Rated	Unrated

50 min
The two versions show marginal differences when Johnny is being sawed apart in the pig body.
No difference in running time

R-Rated	Unrated

90 min
Joe cuts his hand off with the blow torch in an additional shot.
1 sec

90 min
After a cut to George Joe can be seen severing his hand completely.
2 sec

90 min
The bloody arm stub and the severed and still spasming hand can be seen, the R-Rated only shows the hand.
R-Rated: +1 sec
Unrated: 2 sec

R-Rated	Unrated

92 min
The last shot of Joe's head being squashed by the forklift was removed in the R-Rated version.
3 sec