Quote:
Originally posted by piscorpio
Nice post man! Im just kinda bummed that my D16y8 is nothing more than a cheap second rate swap alternative! 
I do have a question about R/S ratio though. Is it possible to get my engine (1.54 R/S?) closer to the ideal 1.75 ratio? If so, how is this done? Also. is 1.75 always the perfect ratio? (Does it apply for any set up NA or FI?)
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The only engines discussed that have near perfect R/S ratios are the B16A and B16B. The rest (including the B20) have to be destroked to achieve the numbers. With the B20 what you do is get a crankshaft from a B17 and custom length rods. There you've changed both the rod length and rod stroke length. To do the same to your D16 you need to crunch some numbers and find out how to change the crankshaft (possibly by getting another shaft from another honda) and then figuring out how long the rod needs to be. Like I said, it gets really technical and this case, very expensive. You're more or less designing your own engine dynamics. It'd be alot cheaper to just get a B16. As for the block gaurd, yes this would definitly help. But if you want to make SO much power from that engine that the R/S ratio is an issue to you, the block guard was already neccesary even with a good R/S ratio. Get my point?