Miata Mailing List: January 1996, Message #146
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   From: RMrph@aol.com
Subject: Re: 18 BTDC, not BDTC :p
   Date: Wed, 3 Jan 1996 16:36:34 -0500

In a message dated 96-01-03 14:09:26 EST, dherr@extro.ucc.su.oz.au writes:

>I'm afraid I misspelled that word. :p  BTW what the hell it stands for,
>anyway?

18 (degrees) Before Top Dead Center

Roseanne
SoCal Red '90
(at a very conservative 14 deg BTDC)