3AJ + 2KF = trouble?
I took my bike apart this weekend to do an electrical overhaul, repair the headlight cowling, and paint the underside of the tank, to find shocking news.
On the head is stamped "2KF" but the bike is a 3AJ Mk1, as indicated by frame and all other engine numbers. Does this mean it's on it's second head? Are there any differences?
Cheers in advance. I'm banking on having to do a top end and g/box rebuild in the New Year, so any info I can get before then would be great.
The bikes an 89/90 ("G" reg) 3AJ with 37500 miles.
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