bore size

[wannaswapab20]

any of u guys kno the bore size of the a20a3? and by any chance u guys kno if the et2 head will bolt on the a20a3?? thanks guys

[89LxiAg]

1987 A20A3: 3.25 inches x 3.58 inches (bore x stroke)

1988 A20A3: 3.25 inches x 3.58 inches (bore x stroke)

1989 A20A3: 3.26 inches x 3.58 inches (bore x stroke)

Hope this helps.

The ET2 from 1985 and 1986 both ran at 9.1:1 compression ratio, which is greater than the 1987 A20A3 8.8:1 compression, but lower than the 1988 and 1989 A20A3 compression ratios of 9.3:1. I don't think that makes any difference, but since the manual was open to that page I thought I'd pass it along.

Later.