Yeah I think there is more good to be had with this system then has really been tested.
I had about 2' of clear hose per side but could only see moister move on one, I tried tweaking the other side but got no results so I just ran it.
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Yeah I think there is more good to be had with this system then has really been tested.
Great info. Thanks.Kevin Johnson wrote: ↑Fri Jun 19, 2020 11:31 pmviewtopic.php?t=59218#p836083MadBill wrote: ↑Fri Jun 19, 2020 11:10 pm It's definitely a challenge to get meaningful exhaust pan vacuum with a street exhaust system, but David Vizard in (I think) his BBC book shows a system with the pickup tubes running parallel down the center of the collectors and ending at the venturi throats. I believe it achieved ~ 8" Hg., which would suggest it could work with a low restriction exhaust. If anyone's interested I'll try to dig it up. I believe it was built by a then-member of ST.
Kevin Johnson wrote: ↑Wed Nov 20, 2019 1:46 amMadBill wrote: ↑Wed Nov 20, 2019 12:47 am In his BBC book, David Vizard wrote about and showed a system he said was by far the best pan vac. he's ever seen. I forget the builder's name, but I believe he is/was a Speed-Talker. The system used a square cut ~ 5/8" tube angled in through the side of the merge collector and bending to run down the centerline to the throat. I believe it achieved ~ 6" Hg.https://www.chevydiy.com/how-to-build-chevy-big-blocks-exhaust-system-guide/ wrote:If you are looking for the ultimate in evacupan performance, it’s time to get serious about the location of the extraction nozzle. My big-block building compatriot Mark Dalquist managed to get a draw of almost 9 inches Hg (which is 121 inches of water) by finding the sweet spot in the center of the collector among the primary pipes.