Cross-Compatability of Crankshafts?

[JShadzi at aol.com]

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Bob, ETKA shows that the 7A and ADU use the same crank, and the 3B and 7A/NG
all use the same crank too, all 5 cyl. cranks are forged, so any differences
would be bearing size, as far as I know they should all be quite
interchangeable, I'd even try a 4kq crank as those are very plentiful and
should be the same.

Javad

In a message dated 4/22/2002 11:50:29 AM Pacific Daylight Time,
robert_a_dupree at bankone.com writes:
>
> Does anyone out there happen to know for sure if there is any cross
> compatability between the crankshafts?  Application would be the 20v
> family.
>
> Can a 7A crankshaft be used to replace a damaged 3B, AAN or ABY crankshaft?
>
> I'd like to start putting the S2's ABY motor back together and the bearing
> surface on #3 took a lot of abuse.  Micropolishing is one possible option,
> but I'd like to avoid that if the answer is as simple as a swap from
> something else.
>
> Cheers!
>
> Rob Dupree
>      '84 UrQ
>      '97 4Runner Ltd
>      '77 Dodge Colt Grp 2 SCCA Rally
>