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Re: Head Identifcation

Subject: Re: Head Identifcation
by ddgonzal on 2019/2/11 19:52:09

It's a puzzler. They only ones I could find similar are G25 and H74 although our photos have only the new bolt pattern, reportedly some G25 have both bolt patterns (like in your photo here)

More curiously is the spark plug details ... I don't recall seeing any like that

Regardless whether it is A12 or A14 makes little difference. Some A14 is round-port, and some A12 is larger oval-port than A14 oval-port. The compression is the same, but only some of the newest heads are lower compression (e.g. 1981-up A15 heads) everything else is 29-31cc