DSR top fuel engine on a Spintron (video)

[.]

Alan, did you ever pick up any nuggets of info that you can share?

 

[John Capps Sr.]

Alan, remember the same thing happening when the first good 'Stud-Girdles' came out or when Chev. went to 7/16 push-rods? After all the 'Monkey-Motion' was taken out of the valve system, the profiles had to be redone to achieve the same flow as the 'Floating' valves were flowing. As Abraham Lincoln said in that famous Tweet, "Them Harmonics is WEIRD'...!!!"

 

[Randy]

Lots of movement going on here.

There was a similar video out there where the outer valve spring broke during the test. I tried to find it but couldn't.

 

[Randy]

"the purpose of this test was to monitor valvetrain deflection. It basically allowed us to see where the loss of control is and how to dial it back to its "happy place" we were very successful and the cause and effect were actually very clear."

9000 RPM run

https://www.facebook.com/video.php?v=1291037670932143

That guy needs some safety glasses at a minimum.

 

[ScojoDak]

Great thread