Case/crankshaft Mods -6, Looking for opinions Options

[Jetsetsurfshop]

Hey Paddock,
I'm heading down that slippery slope (already started) and been looking for information/opinions on case and crankshaft modifications.
I already had my case boat tailed and was looking to complete the task by having the crankshaft knife edged. Then I found this article from Neil at Performance Development.
http://performancedevelopments.com/living-on-the-knife-edge/

Sounds like he's legit and I haven't done crankshaft mods yet. Thinking I should leave it be.
(IMG:style_emoticons/default/beerchug.gif)
Shane

[Thorshammer]

I haven't posted on here in awhile, but I did a significant amount of work in this area back in the day. I have used a knife edged crank, and a standard (66mm stroke) and found no appreciable difference. However, the theory is correct, and it is standard practice on other models of engine. One only needs to look at GT3 race modded crankshafts to know that the factory crank is indeed knife edged. But, we are (most) amateurs.... Money (and time), probably can be better spent looking at other items. I personally like straight cut gears on the intermediate shaft, although some will argue, that the noise is a detractor. They are period correct for a vintage car, as they were used as a mod, by several competitors. On my spintron rig, they decreased the required wattage by 215 watts, which would equal about a .9% increase in HP, although it wouldn't be linear. One are which is of significant improvement is to build proper velocity stacks with a full radius for the Webers. As well as a vertical stand off for the oil breather and use some fuel tank foam, and a large check valve at the top. This provides for air to exit, and oil to stay in....