Subject: Re: Another Compression question
Author: Patrick Hayes
Date: May 3, 2005, 8:33 AM
Post ID: 1718805518
brian c wrote:
| WFO- I get a reading of 205lbs PSI - both sides identical. I have used this exact gauge on at least 4 or 5 other loop engines over the years and different stages of their lives, and all have registered between 130lbs and 165lbs-. I have had this engine apart and there is very very little carbon build up. What else could be causing the high reading? I should mention that when I torque my head bolts I generally overtorque them about 4 ft lbs from fafotry spec (to 42 ft lbs I believe) , but I have done this on the other motors that have been compression tested as |
I have seen similar Eldo readings on a 74. Maybe it had a cam in it for
better breathing. Know anything about your motor's history? Ride down
to Fremont if you want to test against another gauge.
Careful with that torque wrench. 42 sounds waaaayyy too high.
Remember, the other end of those great steel head studs is screwed into
your nice SOFT aluminum engine block. Pretty easy to just rip out the
aluminum threads. I'd stick with the stock torque and just do it again
at 5K miles. Guzzi's do NOT have a history of blowing head gaskets.
Patrick Hayes
Fremont CA