Subject: RE: Ambo compression testing
Author: Jesse Open
Date: Oct 1, 2002, 3:38 PM
Post ID: 1711124252
Too much anxiety over numbers. Is it running OK ? Is the side to side
within 10-15 psig ? OK enjoy ! Bourdon tube gauges are not at all
accurate. Establish a baseline for your good running engine with your
gauge at watch the side to side readings.Relative readings are what you
are looking at. Don't need to invent problems if your engine is running
OK. When I worked at Sun Electric we tested different compression
testers from numerous makers and they varied over 30 PSI depending on
manufacturer ,guage accuracy,hose length, cracking pressure of the check
valve etc. Some makers use Schrader tire type check valves that may have
as much as a 20 psig cracking pressure. The cracking pressure is
subtracted from the indicated pressure giving a false reading.
If it has no running problems linked to compression problems RIDE ON
:-))
Rich Zink wrote:
| I think (and I could be wrong the 140 is closer to 30 psi low than high. Mine runs about 155. Rich -----Original Message----- From: Rob Prins [mailto:rpr-@vt.edu] Sent: Tuesday, October 01, 2002 10:55 AM To: Loopfram-@topica.com Subject: Ambo compression testing Does anyone have an idea how my 1971 Ambassador should perform in a compression test? I'm getting 140 psi which according to the calculator on smokemup.com is about 30 psi high. Does this mean a whole lot of carbon buildup? Rob |
1969 V700 Euro
1972 Eldo LAPD
1993 Cal III Fuel Injection