I'm further along setting up a gasser economy/vacuum gauge as a boost gauge per
jbaj007's instructions (
Turbo boost guage advice needed).
See the photos at
http://photos.yahoo.com/tabijan in the 126 boost gauge album.
I hooked up a pressure source to feed the reworked gasser economy/vacuum gauge and an Autometer boost gauge for reference.
photo 1 - no pressure input
photo 2 - a little over 5psi on the Autometer gauge an no movement from the gasser gauge
photo 3 - by 7psi on the Autometer gauge the gasser gauge starts to respond
photo 4 - by 10psi on the Autometer gauge the gasser gauge is into the red zone. Ooooh...
photo 5 - by 13psi on the Autometer gauge the gasser gauge is
a half pointer width from the peg.
I don't think the Autometer gauge is accurate. I have a seemingly better made Craftsman vacuum and pressure gauge that reads 1psi higher than the Autometer gauge across the scale. The Craftsman gauge only goes to 10psi so I can't use it to calibrate the gasser gauge. I'm not after 5 decimal places of accuracy anyway.
This was my first shot at resetting the pointer and it looks close to where it should be. I'll know better when I do test runs with the Autometer gauge in the SDL.
It bugs me that the gasser gauge doesn't get off the low end peg sooner. If I calibrate the gauge to peg at 16psi like I'd like it to, it might not get off the low end peg until it senses 10psi.
Sixto
95 S420
87 300SDL