Compression Reading for Dig. tester
#1
Compression Reading for Dig. tester
Ok i finally got my Compression tester built and working right.
I have come to the concusion that i will need a rebuild, but it should still start.
That is where my problem lies, it will try to start with starting fuild, then if i use the fuel injection system it trys for a sec then sounds like it floods out.
Here are the numbers on the Housing, i think i am lucky and only have a cracked apex seal or corner seal, i dont think there is anything major.
I have come to the concusion that i will need a rebuild, but it should still start.
That is where my problem lies, it will try to start with starting fuild, then if i use the fuel injection system it trys for a sec then sounds like it floods out.
Here are the numbers on the Housing, i think i am lucky and only have a cracked apex seal or corner seal, i dont think there is anything major.
#6
Not it is a
Manufacturer. Parker
Supply voltage. 9-30V
Output 0-5V (amplified)
Pressure rating. 20 Bar (approx 290 psi)
Accurate to 0.01 bar or 0.145psi
Maximum over pressure 1.25 x rated pressure.
Linearity <+/- 0.05% over 80 deg C
Hysteresis <0.05% full scale over 80 deg C
Repeatability <0.05% full scale over 80 deg C
Stability <0.1 FS after 1M cycles.
Functional temp range -40 deg C to +125 deg C
Made from 17-4ph Stainless steel.
I was useing a 240Hz sample rate.
Yea i was thinking that something is cracked not broken
P.S. I built the hole setup for about 60 dollars
Manufacturer. Parker
Supply voltage. 9-30V
Output 0-5V (amplified)
Pressure rating. 20 Bar (approx 290 psi)
Accurate to 0.01 bar or 0.145psi
Maximum over pressure 1.25 x rated pressure.
Linearity <+/- 0.05% over 80 deg C
Hysteresis <0.05% full scale over 80 deg C
Repeatability <0.05% full scale over 80 deg C
Stability <0.1 FS after 1M cycles.
Functional temp range -40 deg C to +125 deg C
Made from 17-4ph Stainless steel.
I was useing a 240Hz sample rate.
Yea i was thinking that something is cracked not broken
P.S. I built the hole setup for about 60 dollars
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#8
EBAY that is all i have to say
This is the one that i bought, http://cgi.ebay.com/ws/eBayISAPI.dll...MEWN%3AIT&rd=1
Here is on for sale, http://cgi.ebay.com/Pressure-Transdu...QQcmdZViewItem
There is a few for sale
This is the one that i bought, http://cgi.ebay.com/ws/eBayISAPI.dll...MEWN%3AIT&rd=1
Here is on for sale, http://cgi.ebay.com/Pressure-Transdu...QQcmdZViewItem
There is a few for sale
#10
Racing Rotary Since 1983
iTrader: (6)
i use the Honeywell pressure sensor 4000 pc series. runs on the same current as the map sensor... 5 v. output 0-5 volts. i measure fuel and exhaust back pressure.
PN 4040pc150g4d
they are avail
0-15 psi
0-100
0-150
0-250
bought 2 for $40 on ebay a couple of years ago.
howard coleman
PN 4040pc150g4d
they are avail
0-15 psi
0-100
0-150
0-250
bought 2 for $40 on ebay a couple of years ago.
howard coleman
#11
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Join Date: Oct 2002
Location: Bartlesville, OK.
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Looking at the trace from your front rotor brings a question to mind. Normally when a rotory looses a apex seal you see TWO low readings followed by one normal, so I guess you're thinking this is a side seal leaking since you have two normal and one low? Maybe you should think about trying the water treatment to see if it would free up some carbon buildup...
Also, I found that if you haven't calibrated your pressure sensor and adjusted for RPM and altitude the actual compression values might be considerable higher, or lower, than shown. On the other hand, its the pattern of pulses and the ability to compare that's most important.
Also, I found that if you haven't calibrated your pressure sensor and adjusted for RPM and altitude the actual compression values might be considerable higher, or lower, than shown. On the other hand, its the pattern of pulses and the ability to compare that's most important.
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ZaqAtaq
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