Head Gasket identification

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Deciding on a proper head gasket to use is actually both important and confusing.
Searching previous threads regarding head gasket thickness sways one to believe an Athena head gasket is approx .060 thick. Thicker than an OEM of about .045
This SCM shown on the left came to me recently with the SCM XS engine gasket package. Supposedly after reading that SCM head gasket is similar in OEM thickness spec. Mine is not however . It’s even marked 1.50 mm. It’s just over .060. Does that look like the SCM other members have received?
And.. the head gasket which is unmarked does measure well at .045 ? The weird thing is this engine top end was loosely assembled using green “Athena” gaskets I believe. I’ve disassembled and replaced those green gaskets with the SCM set. But what the heck is that unmarked head gasket I pulled out? Doesn’t seem to be the described thick Athena gasket written about in several old threads.
Does anybody have a good perspective on what is shown in my pic? I’m stumped momentarily.
~RT
 

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Here is the green cylinder base gasket that was pulled out. And the other green gaskets which were both installed or extra.
Do those green gaskets appear to be “Athena” ? As they are marked by other names ?
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The text you can see is the company making the sheet gasket material. Then another company takes the sheets and cuts the gaskets. So you really have no idea from looking at the gasket material marking who it was that cut them from sheet.
 
After searching many online pics of Athena gasket sets it looks to be concluded that in fact my green set is correctly marked as the Athena set.
Here is what is interesting. My new SCM head gasket , 061 thick is also marked consistently as the Athena set markings. Therefore I believe the SCM gasket set I recently purchased off EBay included an Athena head gasket and not the “like OEM” gasket others have received.
so there is the warning, pay attention if you purchase SCM
~RT
 
Hello ? 😅
So of course I copper sprayed the unidentified thinner head gasket and have the top end loosely assembled.
Over nite those what if thoughts were in my head regarding the whole engine gasket set as well as the partial set left from the previous owner who assembled the valve train in the head.
I’ve searched many threads and have yet to identify the 2 sets of 4 , small red rubber orings?
I was assuming these would go under the tappet cover with Yamabond as a sealer?
Can anybody help me identify those red orings please ?
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Mikes XS site shows this description. My best guess is that I will be using the 4 larger to seal the tappet cover to the head ?
Also, noted that I have not a single reply of any kind to this whole thread 😅
I’m on an I Pad now so is this visible to any of you ??
Just give a thumb up, middle finger, smiley face, tell me a lie.. just any response (hopefully helpful though) would help
~RT
 
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Mikes XS site shows this description. My best guess is that I will be using the 4 larger to seal the tappet cover to the head ?
Also, noted that I have not a single reply of any kind to this whole thread 😅
I’m on an I Pad now so is this visible to any of you ??
Just give a thumb up, middle finger, smiley face, tell me a lie.. just any response (hopefully helpful though) would help
~RT
Are you sure? My post is shown as #3 on this thread.
 
Correct 👍 and thank you! I’m on a new WiFi and was really starting to wonder ..
Posting actual technical questions here , not porn or politics, but real needed XS engine concerns
😃
 
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Here is all that I’ve found and am thankful for Jims top end thread pics.
I’m going to assume the previous owner installed those Orings and my “extra” 4 are from my last set purchased.
Movin forward 🤞
 
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