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Air flow at the push rod pinch.
Hi all.
Stan Weiss a member on this board a number of months ago asked me to do a flow test of the stock port area at the push rod pinch point. Since I did not want to cut up a head to do such I had to 1) make a mold of the port, 2) mask a casting of that mold , 3) cut that casting up and make it mountable and sealable to the flow bench. I used a stock 1978 6X casting to make the port mold from. Here are some photos of the whole deal. The short section comprising the push rod pinch is what I made a casting of and flow tested. In the last of my photos I had to make a very gentle curved entry radius to get the highest possible flow number out of it. The flow results where this. At 28” that stock amount of port area at .974” wide can pass 239 cfm.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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