Well in another thread, I alluded to the idea of a DIY flowbench. It looks like there is quite a bit of info out there on the prospect of making your own. Has anyone here done this or used/seen one?
I'm considering putting something together myself. I'm thinking if you built it for 1000CFM or so @ 28"H2O, you could test anything: MAF's, TB's, carbs, intake manifolds, heads, intercoolers, intake pipes & filters etc.
The trick is to find the vacuum motors. A lot of household vacuums have the Ametek/Lamb motors that work perfectly in clusters. They generally have an output of 100cfm @ 90"H2O which is perfect since you can bleed off the excess vacuum. The stanard bench seems to have 6 to 12 motors and they run in groups of 3, so you switch on 3 at a time as to not waste power.
To monitor the vacuum, I'm thinking you could hook your regular vac test gage to the bench plenum. Then use the pitot to measure the flow.
Here are some links.
http://www.kartingtechinfo.com/tech/flow.htm
http://www.ag.auburn.edu/users/gparmer/articles/flowbench2/
http://www.performancetrends.com/ez_flow_system.htm
http://victorylibrary.com/mopar/bench.htm
Anyway, just throwing this one out there. Maybe we can come up with an easy DIY bench with parts you can get at ACE or Lowes for cheap and some old crappy used vacuums
I'm considering putting something together myself. I'm thinking if you built it for 1000CFM or so @ 28"H2O, you could test anything: MAF's, TB's, carbs, intake manifolds, heads, intercoolers, intake pipes & filters etc.
The trick is to find the vacuum motors. A lot of household vacuums have the Ametek/Lamb motors that work perfectly in clusters. They generally have an output of 100cfm @ 90"H2O which is perfect since you can bleed off the excess vacuum. The stanard bench seems to have 6 to 12 motors and they run in groups of 3, so you switch on 3 at a time as to not waste power.
To monitor the vacuum, I'm thinking you could hook your regular vac test gage to the bench plenum. Then use the pitot to measure the flow.
Here are some links.
http://www.kartingtechinfo.com/tech/flow.htm
http://www.ag.auburn.edu/users/gparmer/articles/flowbench2/
http://www.performancetrends.com/ez_flow_system.htm
http://victorylibrary.com/mopar/bench.htm
Anyway, just throwing this one out there. Maybe we can come up with an easy DIY bench with parts you can get at ACE or Lowes for cheap and some old crappy used vacuums
