Tgalo 121 #1 Posted July 17, 2020 I bought a gauge that’s supposed to be 0-25 but the engine almost pegs the gauge at idle. No numbers on the gauge, cheap china... so what should it be? I thought like 8 psi. I have a nice SW 0-50 I might use instead thanks, T Share this post Link to post Share on other sites
formariz 12,045 #2 Posted July 18, 2020 I have a rather accurate gauge installed on mine. Pressure depends also on how cold or hot the oil is. Cold it will peg it at 25. Specs I believe are a minimum of 8PSI at idle. Mine never has less than 18 at idle and it will go to about 38 at full throttle. Share this post Link to post Share on other sites
Tgalo 121 #3 Posted July 18, 2020 Ok thank you. I think I'll try the Stewart Warner gauge. Share this post Link to post Share on other sites
Tuneup 1,452 #4 Posted July 18, 2020 I bought a cheap, emphasis on everything meant by that term, compression gauge set at HF because I wanted the adaptors above the old pressure seal one I've prized since a teen. I was excited to be able to measure my old 70s Honda compression. Hell!!! this engine is shot - read about 90 psi on all cylinders. What, 10,000 miles and runs well but shot? I attached it to my nice new Suzuki 1200 and just about the same - just junk. 5% error is nice, but 50%? Nice to have the adaptors, though. Calibration doesn't mean much nowadays...makes me wonder about that HVAC gauge set now... Share this post Link to post Share on other sites
