info about Westach 0-30psi Fuel pressure guage

[1tuffram]

Thought I'd post some info I recieved from Westach when inquiring about a 0-30 psi fuel pressure guage for the 24V application.



This was Westach response:



"We have a 0-30 fuel psi guage. 2C8-37 $40. 60 for use with 0-30 psi sender 387-30V2-C $40. 60. This is a good guage however the sender may not give the resolution you require. It can be off, or lag in reading. If pressure is falling and shows 20 psi on the guage the pressure might be 16 or 18 psi actualy. Some customers opt for a more accurate system. (aircraft quality), this follows the psi without any lag. It is more $$ of course. 2C8-37KV $81. 20 and the sender 387-30KV $104. 00.



The lighting kit for wither guage is 186 $4. 00. "





So when I checked the difference between the 2 fuel pressure guage systems I found the sender unit for the cheaper one ($40. 60) is a resistor type sender (240 ohms). The more expensive system uses a solid state transducer. Not a resistive type sender. No moving parts to wear out. The output for the solid state transducer (sender unit) is 0. 5 - 4. 5 volts full scale with 5 volt supply provided by instrument.



Is it worth the extra $$ for the solid state fuel pressure system?? Can it bought somewhere other than the manufacture for a cheaper price? How about someone get a group purchase thing together?

 

[Thomas]

I'm running a custom dual Westach fuel pressure gauge with the resistor senders. I don't see any appreciable lag in our application. A possible benefit of the transducer type gauge might be less sensitivity to vibration, although with thoughtful installation, the resistor type senders seem to hold up.

 

[JGK]

1tuffram,



I have a thread in the 12valve forum about my fuel pressure gauge I had built by Westach. They said the same thing about mine (lag) because I'm using a resistive type sender. However, after watching mine for a few weeks now I don't see that much of a lag. It seems to read the same pressure pretty consistently for any given RPM whether it's settling down from a higher reading or coming up from a lower one. Maybe only a pound or so difference.



Pete at Westach said the price of the aircraft setup was about $200 (gauge and sender). Just wasn't worth it in my mind.



-Jay

 

[1tuffram]

I was wondering if the solid state transducer system was worth the extra cash. Sounds better on paper, but maybe not much if any difference in real world applications



Another question I have is what fuel pressure psi are you guys seeing with either a "healthy" stock location lift pump, or with a "healthy" pusher pump sytem?? Is it nessecary to get a 30 psi guage over the more common 16 psi? I was thinking of purchasing one of the vendors pusher pump kits with the 7 psi back at the tank and the 15 psi pump in the stock location (stock pump). What kind of psi readings should I be seeing when all pumps are working properly? I would think 15psi would be the highest reading I'd see, but maybe I'm wrong?