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I got a B20 for my 122s Coupe swap/upgrade, but which B20 did I get? 120-130

uid 32173's pic
posted by  Gary L on  Tue Aug 31 04:35 CST 2010
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last visit: Wed Oct 22 10:26 CST 2014
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"I know B20Bs in 71 had a 118HP rating and 97HP from 72 on, mostly to compression ratio changes... is there a way to find out what engine I have?"

Actually, I have documentation (admittedly in the form of a '72 sales brochure... not the shop manual) that says the B20B was still 118 hp for that last year of sales here in the USA. If that's the case, and if the head on your engine is a US spec B20B, it would have 9.3 to 1 compression ratio... regardless of year. Maybe someone on here with a '72 shop manual can confirm or deny?
--

Gary L - 142E ITB race car, 73 1800ES





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