I'm proposing the addition of a crank scraper purely for reliability reasons. It's a relatively inexpensive part that is easily installed. Best time to install is when we have to change out rod bearings. From what I know they come in plastic or metal. The link below is to Paragon Products and they sell it in metal form for $80.
www.paragon-products.com/Crankshaft-Scra...5l-crank-scraper.htm
I'm not that mechanically inclined so I'm not aware of the potential advantages it may or may not have. The Paragon website states "During normal engine operation a significant amount of oil adheres to or becomes entrained in a cloud surrounding the spinning bottom end. This oil eats up horsepower your engine is making by increasing the rotating mass and also creating parasitic drag. A crank scraper mechanically strips off excess oil by coming close to, but not touching*, the moving crankshaft and rods. It also interferes with the pressure differential that draws oil into the so-called windage cloud."
The last sentence of the quote is what interests me, especially with number 2 bearing. These cars are appx. 30 years old and I've found parts have slowly increased in price while ease of availability has gone down. Anything we can do to keep them on the track inexpensively, will only sustain the popularity of the class and racing fun! Given the low cost and affect it can have upon reliability, I believe it should be considered for approval.