This is a follow-up to the CS-220 article on a "ghost mains" crankshaft for the MGA pushrod engines. You may want to review that article as well.

On 1/19/2020, Mick Anderson wrote:
"Has any Twin Cam owner ever used a crankshaft with "false" main bearings?
On an engine with a pair of conrods between each main bearing you have a long crankshaft web between conrods. With "false" main bearing journals between the pair of conrods you have only short webs and all conrod journals now have overlap with a main journal. (Our crankshafts were made by Farndon in the UK. We have not bought any for some years now and I am not sure if they still make them)". http://www.farndon.com

On 1/20/2020, Neil Burnside wrote:
"Yes I have 3 of them".


On 1/20/2020, Mick Anderson wrote:
"The fact that all crankshaft webs are short instead of one short and one long as with paired conrods and that all all conrod journals now overlap their diameters with a main bearing journal add tremendous rigidity to the crankshaft".

On 1/20/2020, Randle Roberts wrote:
"Marine Crankshaft in California does this as well. I am thinking of having one made. It was around $2,500 about a year ago".

From the Marine Crankshaft site:
Our crankshafts are manufactured completely in Santa Ana, California, USA from the highest quality E4340 Aircraft quality Cr-Ni-Mo alloy billet steel.
Triple heat treated for extreme strength, toughness & durability. All crankshafts feature:

High speed straight line oiling system. Dynamic “no holes” balance. Through pin lightening holes. Ion-plasma nitride for superior journal surface hardness & wear resistance.