Sunday, March 21, 2010

ITR vs GSR Crank


3 comments:

  1. The B18C1, B18C5, and B16B rod are 1.96mm -2.00 mm narrower (0.858 in. vs. 0.935 in. in non-R rods) at the crank end (or rod "big end")

    and will not fit on the other Honda B series cranks or pistons directly without some modification.

    You must use the VTEC rod bearings with the VTEC rods if you are swapping onto a nonVTEC crank.


    Balancing weights were added to number 1 and 4 wich reduces vibration at high rpm by 20 percent

    The journals of the crankshaft also feature a special micro-polished surface finish for reduced friction and increased durabilty

    Attachment point of the connecting rods to the crankshaft uses a new, adjustable connector that allows the mechanics to manually adjust the connection using a micrometer so they can compensate for the stretching of the connecting rod bolt

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  2. http://www.honda-tech.com/showthread.php?t=2449855

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  3. In the B18C, it enabled the engine designers to reduce the connecting-rod bearing width from the B16A's 19.5 to 17.5 mm. Two millimeters shaved off each connecting rod journal is added to the crankshaft webs flanking it, giving the crankshaft the extra strength it needed.

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