Bessel Motorsports, Inc. the home of the exceptional Bessel splayed caps have captured the racing industry once again with its patent – pending Bessel Block Supports. Which provide significantly improved block support by adding a .003″ pre-load in the engine block. Many diehard Ford enthusiasts knows, the 302 Ford factory blocks are notorious for splitting [...]
5 Ways to break the nose of a crankshaft
1. IMPROPER MACHINED CRANK GEARS A. Champher machined at wrong angle. B. Champher machined with too small an angle. C. Belt drive gears. The seal sleeve bottoms to the face of the main before the interface of the gear bottoms against the step in the nose of the crank. All of the above prevents [...]
Cast, Hypereutectic or Forged Pistons
Cast Pistons A cast shaped component means that the material has been melted and then poured into a mold that basically shapes the piston. The advantages are many, for example: a possibility to add other components like silicone, carbon, zinc and so on in order to gain certain properties. The aluminum itself doesn’t build [...]
STOP “main cap chatter”
Over the last fifteen-plus years, as the street / strip hobby has grown to unpredictable dimensions, the venerable production blocks have been used and abused by countless numbers of racers. In the process, there have been more cracked blocks that would fit into a warehouse. As a result, there has been a need for a [...]
Diamond’s Type 3 Hard-Coat Anodized Pistons
Imagine the surreal heat and cylinder pressure generated by a Top Fuel engine on a 1000-foot pass. Though the violence to the pistons isn’t as concentrated inside a street engine with a power adder, it is constant and just as debilitating over the long run. Diamond has the answer. A street-driven nitrous-fed or supercharged engine [...]
WET SUMP vs DRY SUMP
There are two major divisions in engine oiling systems: wet and dry sump. “Sump” simply means the chamber in the bottom of any engine that collects lubricants for redistribution. In a piston engine the oil pan is the sump. A wet-sump system is the same used in passenger cars and mostly seen in the lower [...]
Auto Math 101
CUBIC INCH DISPLACEMENT BORE X BORE X STROKE X .7854 X # CYLINDERS 4.030 x 4.030 x 3.750 x .7854 x 8 = 382.6 ( 383 Chevy ) PISTON TO DECK CLEARANCE VOLUME BORE X BORE X 12.87 X PISTON TO DECK CLEARANCE [ PLUS OR MINUS ] EXAMPLE: 4.030 X 4.030 X 12.87 [...]
Quick Reference – “Bore Spacing”
Bore spacing is the distance from the center line of one cylinder bore to that of the adjacent cylinder. Assuming the bores are perfectly round, this distance can be determined by measuring the distance from one cylinder wall edge to the far cylinder wall of the adjacent cylinder. To save all of our Bessel Motorsports [...]
Crankshaft Tech – “SAY NO TO CROSS – DRILLING”
Nowhere is this more true than in the straight shot oil systems designed into all Bessel Motorsports crankshafts. With the throw at 12:00 the oil enters the main bearing between 6:00 and 9:00 depending on journal size and stroke. The oil passage goes straight to the throw and exists at approx 1:30 to 2:00. RPM [...]
Professional Products Powerforce+Plus SFI race spec damper for the 1992-2009 Dodge Viper
Professional Products is famous for their large selection of high-performance street and race dampers. As a result of numerous requests, they have engineered two inexpensive (approx. $200) Powerforce+Plus 6.95-inch dampers for the early 1992-’02 (#90016) and the 2003-’09 (#90017) Dodge VIPER engines. A front timing cover change was made in ’03 necessitating the damper change. [...]
