The manual was written in the mid forties. In sixty years much has been learned about metallurgy and engines. At 540 degrees your cylinders have sustained some type of damage and/or degradation. 400 degrees is where your personal alarms should be going off. At 400 degrees you need to be doing something to get the temps down.
Al DeMarzo Visit the Ercoupe Swap Page Free, Easy and No Membership Required http://www.ercoupeowners.com/swap/swapbook.htm ----- Original Message ----- From: kgassert To: [email protected] Sent: Saturday, July 19, 2008 10:22 PM Subject: [ercoupe-tech] Re: Temperatures Ideal oil temp is 180, that is what it takes to remove the water. My A&C operators manual states max oil temp is 225 and max CHT is 540 for the C85. Kevin1 --- In [email protected], "Al Demarzo" <[EMAIL PROTECTED]> wrote: > > Absolutely not! 425 is waaaay too hot and you're on the verge of doing damage. 400 should be the max before you need to take action. Not sure about 200 but I would like to see it a bit cooler. > > That being said, how accurate is your CHT gauge and what type of probes are you using? Basically you need to carefully check the conditions of your engine baffling, that's all you have to cool your engine. Always make sure it's in top shape. > > Get into AVWEB and search for John Deakin's articles (Pelican's Perch). John has been able to communicate all the proven data about temps very well. > > Al DeMarzo > Visit the Ercoupe Swap Page > Free, Easy and No Membership Required > http://www.ercoupeowners.com/swap/swapbook.htm > > > > ----- Original Message ----- > From: [EMAIL PROTECTED] > To: Ercoupe Tech > Sent: Friday, July 18, 2008 3:26 PM > Subject: [ercoupe-tech] Temperatures > > > With an Outside Air Temperature of 85 degrees, what is a reasonable cylinder head and oil temperatre reading at cruise speed? > > Mine are about 425 and 200 respectively. Is that normal? > > Thanks, > Fred >
