davken1102

does anyone know the r/s on a b20 block?

GSRswapandslow

1.54 i believe

davken1102

damn that sucks! i was hopin it would be more around 1.65:1

slammed_93_hatch

The ideal R/S is 1.75:1,
B16A:
Rod length: 134 mm
Stroke: 77 mm
R/S: 1.74:1
Displacement: 1587.12 cc

B17A:
rod length: 131.87 mm
Stroke: 81.4 mm
R/S: 1.62:1
Displacement: 1677.81 cc

B18A-B:
Rod length: 137mm
Stroke: 89mm
R/S: 1.54:1
Displacement: 1834.47 cc

B18C:
Rod length: 137.9 mm
Stroke: 87.2 mm
R/S: 1.58:1
Displacement: 1797.36 cc

B20A (Older Prelude Si)
Rod length: 141.7-142.75 mm
Stroke: 95 mm
R/S: 1.49-1.50:1
Displacement: 1958.14-2056.03 cc

davken1102

yea, i knew the ideal ratio was 1.75:1 but i really doubted that a b20 block out of a CR-V would be close to that but 1.54 is pretty far off so you wouldnt be able to rev it up very high. which sucks

GSRswapandslow

you can rev it as high as you NEED to.

it's all in the cams and the setup. supre high revs aren't needed unless you make power super high.