Eliacim, I applaud you for removing the cylinder. When in doubt don't scrimp. The pilot is the first to the scene of an aircraft accident. Lee
-- [EMAIL PROTECTED] wrote: Well, the jury is out, in my specific case. Like promised, Sal (the cylinder man from Prosper, Texas) called me at 7:45 AM this morning and told me the exhaust valve was "beaten bad". Told me I need to check the hydraulic lifter, then check valve clearance. I am thinking just to drop in a new hydraulic lifter, before checking valve clearance. Sal also told me, in this specific case, we made the right decision in pulling out the cylinder. Eliacim > > Actually Continental has a separate orfice that is used to calibrate the > standard compression testers (which do have an orfice) > > Here is link to the Cont svc bulletin : > http://www.sacskyranch.com/SB03-3.pdf > > Note that I was in error, if you have some valve leakage but the > compression leakdown is within the limit set by the Continental calibrated > orfice you are still good to go. > > Basically Continental says that at the higher pressures created by > combustion the smaller leaks seal them selves, and if a borescope > inspection does not show abnormalities and leakdown is within THEIR limits > you are good to go. > > In real life, I usually pull the cylinder if it has valve leakage or oil > blowby > > > > Bill > > > To: [EMAIL PROTECTED]: [EMAIL PROTECTED]: Sun, 4 May > 2008 16:30:09 -0700Subject: Re: [ercoupe-tech] Grounded > > > > > > Al just a quick note from an A&P.. Leakeage from an intake valve is not > considerd to be fatal since the incoming fuel will cool the valve, > leakaage past the rings will burn oil and increase crankcase pressure, but > a leaking exhaust valve will continue to destroy the valve since the hot > gas will continue to errode the valve face.. Thats why most mechanics > will pull a cylinder if an exhaust valve is leaking during a compression > test . We have your safety uppermost in mind , losing a exhuast valve in > flight would spoil just about anybody's day. By the way, all compression > testers have a calibrated orrifice. > > Tom A&P/IA Couper3938H > > DeMarzo <[EMAIL PROTECTED]> wrote: > > > > Oh man! You using Sal for the cylinders? > > Your mechanic should have a calibrated orifice to check compressions. > Continental says that compressions to 40 should be okay and that the > combustion chambers and valves should be checked with a borescope when > they're low. Any good A&P and all A&P's with IA should have a borescope. > > Are you using TCP in your gas? > > Al DeMarzoVisit the Ercoupe Swap Page Free, Easy and No Membership > Requiredhttp://www.ercoupeowners.com/swap/swapbook.htm > > > > ----- Original Message ----- > From: heavensounds > To: [email protected] > Sent: Saturday, May 03, 2008 9:26 PM > Subject: [ercoupe-tech] Grounded > > > > Started my annual today. Checking compressions... 79 ! , 79 ! , 79 ! , and > ... (drum roll) > > 59 and the noise of air escaping through the exhaust. : - ( > > Tried staking the exhaust valve. No success. Had to pull the jug. Called > the guy who overhauled them 1 1/2 years ago and he said to bring it over > (Saturday afternoon), that it probably was a stuck exhaust valve and it > should be ready Monday afternoon. Can't complain about his response!! > > Another sour note is that we pulled a helicoil out on another cylinder > when pulling out the spark plug. Something else to deal with. > > Well, as I used to tell my son: "Patience is the mother of happiness" Now > It's my turn to apply it. > Eliacim > > > . > > > > > > > > > > __________________________________________________________ > Get Free (PRODUCT) RED™ Emoticons, Winks and Display Pics. > http://joinred.spaces.live.com?ocid=TXT_HMTG_prodredemoticons_052008 _____________________________________________________________ Click here to find the perfect banking opportunity! http://thirdpartyoffers.juno.com/TGL2111/fc/Ioyw6iigDcrHVmyBFKrbsxsOZQQjB35LryXF4aPNPAngky0NIEiGdr/?count=1234567890
