Is there any benefit to running a windage tray in high performance street application?
I had to Google it to see what it even meant, but I can't see how one would help on a dry sump system that already uses a baffle in the oil pan.
If you look at the inside of a Harley crank case, you will see a scraper at the bottom of the case. The flywheel runs close enough to it that it effectively pulls the "ropes" of oil off of the flywheels and directs the oil to the scavenge side of the oil pump. Basically it accomplishes what a windage tray does in a V-8.
Way back when, building strokers, we used to weld more material on the scraper and then carefully trim it to get very close to the flywheels. When using 80" flathead flywheels to stroke an early (pre 1955) panhead we had to remove material from the scraper because the flattie flywheels were larger in diameter.
:agree: Brings back memories. .030 minimum. At the top it also reduced cylinder wash.
There is not much room in there for one...and like said the scrapers are already there.
You making one or have a link to one?
Here's a scraper for a M8:
https://youtu.be/B5WomRbeSTc
The M8 may need a larger one?
The shovel and rest afaik have them built into the case.
The M8 for whatever reason(s) has wet sumping issues I have read.
There are all sorts cures ..even HD has one or two
If you do a search here it's been discussed when TR came out with it. It was early first M8 models. There were crank vents and oil pumps (many) too.