Originally Posted by Mike Benvo
I'm not brave enough to try it, but if anyone is I will raise your redline for free!
I think the valve springs won't keep up and you might outrun the flame (someone should calculated the piston speed at 10,000rpm).
Whether you like it or not, the powercurve and displacement of the S65 is very similar to B18C5. Dating back to the Honda days, I've seen 9,500rpm with a heavily built NA motor that included everything. 10K is like Warp 10 ... Its something hard to get on a Valve Spring motor, especially 4.0L
If someone would like to try, I would like to see this.
Getting back on topic, the S65 will hold a very special place in my heart for the sole reason of the sound alone. This motor is by far the best sounding I have ever heard.
I can only imagine what power and noise those SCed guys are feeling.