Re: Safe boost

[Allan Tygert <tygera@rpi.edu>]

At 08:26 AM 5/17/96 -0700, you wrote:
>... WRT the lack of overboost shutdown feature.  When this issue came up
>previously, I seem to recall that you noted that pressure switches are 
>available.  A N.C. (normally closed) pressure switch could be plumbed 
>into the intake at some point and used to shut off the fuel pump on 
>user calibrated overboost.  When combined with the resistor/zener mod 
>it seems to me that this would provide some insurance against the dreaded
>WG diaphragm failure.  I should still have a copy of the post in my own
>archives, but it should also be available through the q-list web page if
>anyone is interested.  
>
>BTW - this problem could be caused by a problem with the line that 
>supplies pressure to open the WG as easily as a failure of the diaphragm
>itself ...
>
>Steve Buchholz
>s_buchho@kla.com
>San Jose, CA (USA)
>
Steve,
I looked and as yet, have not found anything I think is small, accurate, and
rugged enoguh to fit the bill.  But I'm still looking (especially now that
school is finally over).  If I see any potential switches, I'll post the
info to the list for expert opinions on if the switch is what we need.

If anyone else wants to aid in the search, have at it!

Thanks,
Allan Tygert
tygera@rpi.edu