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Old 05-20-2014, 12:47 PM
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mach4 mach4 is offline
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Location: San Diego County, CA
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Quote:
Originally Posted by yvairguy View Post
what kind of boost are your seeing?
I'm showing about 9.5 psi. max. I set my 0 pressure point at the house which is 1100 ft. So at sea level I generally show about .5 at idle. I guess that means I'm really at 9.0.

If you can find a 85 300D in the junk yard you can get the ALDA fitting with two connections. One connection is for the vacuum amplifier for the 722.4x transmission (the so called "blue flying saucer"). This makes the connection really simple.



Alternately, you can just use a simple T connector like I've used here. This Tees into the ALDA line ahead of vacuum switchover valve.



Why do I have two taps to the ALDA line? I'm actually running two boost gauges, one as part of my engine instrumentation project



and another one where I repurposed the vacuum gauge for a boost gauge by repositioning the needle to read 0-10psi vs 0-30 inches of vacuum.

Attached Thumbnails
Boost Gauge install parts and questions-boostfitting1.jpg   Boost Gauge install parts and questions-boostfitting2.jpg  
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Last edited by mach4; 05-20-2014 at 01:09 PM.
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