High Speed Flow Bench
High Speed Flow Bench
(OP)
I have heard that high speed flow benches have been made by blowing down compressed air through the cylinder head in a similar fashion to supersonic wind tunnels. Does anyone have any insight on this?





RE: High Speed Flow Bench
RE: High Speed Flow Bench
How do they do it on commercial designed flow benches?
Is it calculated flow ie a certain pressure through a certain size orfice or what?
RE: High Speed Flow Bench
Typical 350 cu" V8 engine draws about 75 cu' per cylinder at 6,000 rpm. When the engine is on the dyno vacume readings are near zero at WOT throughout the rpm range (2,000-7,000) I was testing. The only demonstration of commercial equipment I have seen is at trade shows. The sales people are unanimous in that all testing be done at 28"hg. which they control by changing the orifice size of an iris like device. If I question why they don't just monitor vacume readings they look at me like I'm from some far away planet. I've even seen demonstrations where they draw a deppression on the combustion chamber side to check exhaust flow reasoning being "if it flows good backwards it will flow good in the opposite direction". They monitor cfm. by placing a turbine like device in the conduit between the pump and the bench. In the end I was able to achieve the results I was looking for using the method I described.----------Phil
RE: High Speed Flow Bench
I would like to know where to get an affordable CFM meter?
RE: High Speed Flow Bench
RE: High Speed Flow Bench
SACEM1
RE: High Speed Flow Bench
http://www.tractorsport.com/cgi-bin/forum/cgi-bin/ikonboard.cgi
Happy surfin'