What ever you do, do NOT use RTV or silicon. It has been known to squeeze out and the hardened globs come loose and clog the oil pump. There was a service bulletin on this years ago. I use the "aviation" permatex non-hardening you can buy at auto supply stores. I use the silk thread (get it from your doctor, it is used for stitches) and also use a light coat of permatex on the cylinder flanges and o-rings, and all other gaskets. Makes for a very dry engine. Bill A&P-IA
To: [EMAIL PROTECTED]: [EMAIL PROTECTED]: [EMAIL PROTECTED]: Sun, 18 May 2008 18:45:05 -0500Subject: Re: [ercoupe-tech] engine rebuilding When we did the major overhaul of my engine, in Nov 2006, we followed the"1963" method - Permatex and silk thread. Works fine.Eliacim> Here a question for you engine buffs.>> When putting the case together Continental originally just mentioned a> "sealing compound" to use.>> From the rebuild manual printed 1946:>> "Put a very thin film of sealing compound on the contact face of crankcase> No. 2-4...">> No mentioning of a silk thread.>> That is added in the manual dated 1963:>> "...spread a thin, uniform film of Aviation Permatex ...."> and further down:> "... When the Permatex becomes tacky place a strand of No.50, Grade A silk> thread along the upper, lower and front flanges of the no. 2-4 casting...>>> The latest instruction from Continental SIL99-2B goes a more sophisticated> route:> CRANKCASE SEALANT AND>> THREADING PROCEDURE>> 2. Apply Permatex Number 3D to the 2-4 case half.>> Apply Permatex only in areas where thread is>> shown. ....>> 3. Apply a thin translucent coat of TCM Gasket>> Maker P/N 646942 not to exceed .010 inch thick>> to 1-3 case half. Apply Gasket Maker in all>> areas that will mate with areas where>> Permatex was applied on 2-4 case half except the>> through bolt bosses.>> 4. Apply and position grade D silk thread P/N>> 641543 on case halves as specified in Figure 1.>> Be sure free ends of thread are covered by>> gaskets except at the nose oil seal.>> 5. Clean crankcase crankshaft front oil seal land>> with Locquic Primer "N" and apply an even coat>> of gasket maker.>>> Today Continental wants us to use two different kinds of Gasket paste, one> on each half plus GRADE D silk.>> That seems to me a slight overkill.>> I used to put beetle engines together and we just used some silicon> compound. That works perfect.>> However in aviation, things seem more complicated.>> So 3 different types of seals.>> Now my question: What is everyone else using? What is the opinion about> the latest Continental specs?> The named Continental Gasket maker compound - what is that actually?>>> Hartmut>>>> _________________________________________________________________ Change the world with e-mail. Join the i’m Initiative from Microsoft. http://im.live.com/Messenger/IM/Join/Default.aspx?source=EML_WL_ChangeWorld
