Reply To: ID this powerhead?

[GARY]

If the waterlines are all A35 size,then the jugs are A35.The 021/011 number matches those on my late 1926 A25.My guess is they tapped some late A25 jugs to take larger lines and used them to make some early A35s.I think A25,A35 and A45 exhaust manifolds will interchange.