john.r.davies Posted January 8, 2022 Report Share Posted January 8, 2022 Over on The Triumph Experience, one of the cousins would like to know about the Triumph engine in his TVR. Over to you, Joe: Greetings... I'm in the process of having my 72 TVR Vixen engine rebuilt.. (TVR sourced Triumph TR6 engines for this model).. I'm hoping someone can help me out on understanding the suffix of this engine number - CC75020UES... I believe this number denotes its a 1972 USA engine.. what does the S suffix denote? Service rebuilt? Any help would very much be appreciated... Cheers Joe Otero (Lexington, KY) Joe offers this pic: Can anyone tell him about the engine, please? Post here and I'll copy or reply direct at https://www.triumphexp.com/forum/tr6-tech-forum.2/tr6-engine-number.1862270/ JOhn Quote Link to post Share on other sites
saffrontr Posted January 10, 2022 Report Share Posted January 10, 2022 John, I believe that the "S" indicates a brand new condition engine, supplied in the event of a warranty claim. We have quite a lot of "HES", "UES" and "ESS" engines in our records. Derek Quote Link to post Share on other sites
john.r.davies Posted January 10, 2022 Author Report Share Posted January 10, 2022 Thanks, Derek, I'll pass it on. Quote Link to post Share on other sites
boxofbits Posted January 10, 2022 Report Share Posted January 10, 2022 ‘U’ is for United States with pollution control equipment. ‘ES’ denotes a replacement engine under a warranty claim. ‘(x)SS’ denotes factory replacement. Kevin Quote Link to post Share on other sites
john.r.davies Posted January 11, 2022 Author Report Share Posted January 11, 2022 And thank you, Kevin! Quote Link to post Share on other sites
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