Flowbench made from vacuum cleaners…
I asked Terry about the Flowbench he made, here’s what he said – “My flowbench started because I wanted to modify my car’s engine by porting the heads. I don’t know how familiar you are with engines, but “Porting the head” means modify the cylinder head so that more air will flow thru them and into the cylinder. Horsepower is directly proportional to airflow, i.e. 10% more air equals 10% more power. But I knew that just making the ports larger doesn’t mean more for airflow.”