i know that the v8's have flat crankshafts, but what about the v12's?..anyone know?..
No -- the throws are at 120 degs intervals, but it also results in interlaced-alternate-bank-firing that sounds so sweet: Image Unavailable, Please Login
No trouble, but it means just what it says (you changed the words a little?). Interlaced alternate bank firing = cylinder firing events alternate in occurrance from bank to bank (so the time between the exhaust pulses in each bank is exactly the same, and it sounds cleaner/sweeter/more pure), and on most F, the two banks are offset by 1/2 the time period between firings in the same bank so it goes L-R-L-R-L-R-L-R and the time between all the pulses is the same too (they fudged this second part a little on the 65 deg angle V12 for packaging reasons). If you map out a US 90 deg V8 using a cross-plane crank, it goes something like R-R-L-R-L-L-R-L so, even though the time between all firing events is exactly the same, the time between the exhaust pulses entering each manifold is not the same -- so it sounds a little more jumbly/rumbly/mixed. Try a search on "alternate bank firing" and read those threads for a lot more.
