Having knocked up a flow bench
https://www.rtoc.org/boards/showthread.php?t=17946
it's now time for it to earn it's keep.
It's worth pointing out that this is my bench, it's not calibrated to any kind of standard, so don't read too much into the results, or try comparing them to results you might find on the internet.
Obviously the first thing I did was see if there is any kind of agreement with any tests I could find on the internet :laugh:
I found some tests preformed by Guy Croft, if you don't know who he is let Google be your friend. Needless to say he's been building engines for a while, undoubtedly knows what he's doing, has a professional flow bench, and will no doubt have it correctly calibrated. You will also find his results on the CNCheads website. I don't have the numbers, just what I could estimate from the graph and squinting in that special way...
Without further adoo:
http://i567.photobucket.com/albums/s...g?t=1285452796
I was gobsmacked, different heads, different benches, days etc. I guess my bench is working OK :cool: