Can anyone teach me how to measure the crankshaft stroke of ITR/GSR crankshaft using bernier caliper, because someone is selling GSR crankshaft and i need to know if it is really came from GSR which is 87mm stroke. Thank you..

 

Measure the distance between crank and rod centerline, then double the distance measured.

 

Easiest way is rod journal width. Gsr, R and B16B are the same. LS, B16 are wider. The other way is piston TDC to BDC with a vernier.