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John D, or anyone else,
Apparently there were at least two designs of FI nozzle blocks for 57-62?
One (apparently older) type has a rectangular phenolic looking body, comprised of two stacked pieces that are bonded longitudinally. The end that is opposite of the air duct (tube) has a round depression. There are no brass nozzle holders embedded in it. This seems to be the ones shown in Fig. 22 of the Rochester Fuel Injection manual (SF83).
Another type has rounded corners on the phenolic block on the air duct end and a square depression on the opposite end. It is formed as a single block and has brass nozzle holders embedded in it. These are like the ones shown in Fig 60 and 62 in ST-12 and seem more prevalent.
Does anyone know some history about the applications of the two (what years and models)? How do they relate to the Q-11, Q-12, R-12, R-13, S-13 S-14 nozzle production codes (if at all)? Was the first type a very limited production type? The traditional references I checked don't seem to talk about the changeover.
Thanks,
David B.
Apparently there were at least two designs of FI nozzle blocks for 57-62?
One (apparently older) type has a rectangular phenolic looking body, comprised of two stacked pieces that are bonded longitudinally. The end that is opposite of the air duct (tube) has a round depression. There are no brass nozzle holders embedded in it. This seems to be the ones shown in Fig. 22 of the Rochester Fuel Injection manual (SF83).
Another type has rounded corners on the phenolic block on the air duct end and a square depression on the opposite end. It is formed as a single block and has brass nozzle holders embedded in it. These are like the ones shown in Fig 60 and 62 in ST-12 and seem more prevalent.
Does anyone know some history about the applications of the two (what years and models)? How do they relate to the Q-11, Q-12, R-12, R-13, S-13 S-14 nozzle production codes (if at all)? Was the first type a very limited production type? The traditional references I checked don't seem to talk about the changeover.
Thanks,
David B.
