I probably already know the answer..........But does anyone have an extra (threaded) exhaust sleeve for a lycoming 0-145-B2 head??? There's a drawing in the back of my Lyc. handbook (no page #, back with the S.B.s) labled only as Figure 3. If P.D. is pipe dia. then it would be 1.5219-1.5265 O.D. w/ threads to match a Female tap of 1.5625 - 16N. form thread. $
$???

Comment