Capt. Tuttle,
Andu Indorins comments in the Delayed Industrialization thread (here in Strategy & Tactics) may be what youre looking for.
Regarding science every 4-5 turns or so circa late game:
1) What is your science rate? -- maybe 50%+ would help
2) How many cities (and what size? Add a few libraries?)
3) OK, now that you have an SSC, it is time for your next lesson:
Trade.
Yes, the cities (post trade) demand and offer products. Yes, the production of a camel can be delivered for 50 shields towards a wonder (well skip the food story for this effort) but it can also be delivered for gain. And that gain is
BOTH coins and BEAKERS towards your current research. So late mid game, four camels in a galley sail across the sea and deliver products to foreign cities -- depending on the distance, they might generate 400-500 coins. AND Beakers.
EACH . Enough for an advance per turn.

Read through the Civ II Game of the Month logs -- lately there have been some notes about caravan deliveries; and check the sizes of the payoffs -- late game my payoffs have often reached $1,000+ by sailing across to the other side of the world (distance adds to the bonus).