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Post  Greenman38633 Sat Feb 24, 2024 11:24 am

How can you tell by looking at it if it is a high compression head or a standard one for Cox 049 ? Thanks. Mark
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Post  balogh Sat Feb 24, 2024 3:48 pm

High compression head Screen52

The top fin of high compression heads is knurled
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Post  Greenman38633 Sat Feb 24, 2024 3:55 pm

Ok thanks for the tip. That was easy
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Post  ffkiwi Sat Feb 24, 2024 6:07 pm

Don't get too over confident-the OLDER (Cox made) high compression 049 heads-the #1702 heads- DID indeed have the knurled ring on top as a means of easily distinguishing between the low and high compression heads-the current production ones do not-so the only way of confirming these is to remove from the engine and check the combustion face-which should be self evident which type once viewed.

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Post  Greenman38633 Sat Feb 24, 2024 6:54 pm

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Post  roddie Sat Feb 24, 2024 7:34 pm

Here's a photo for comparison Mark.

High compression head Glowhe10
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Post  Cox International Mon Mar 04, 2024 4:23 pm

An easy way to distinguish between the two is that the HC version has two fins; whereas the regular version has three fins:

https://coxengines.ca/top-end/cox--049-tee-dee-glow-head.html

https://coxengines.ca/top-end/cox--049-glow-head.html

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Post  Greenman38633 Mon Mar 04, 2024 10:58 pm

Yes I noticed that and was suspecting that it might be the case but I’m happy now to have confirmation. Thanks Bernie
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