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Jul 17th, 2002, 12:01 AM

The b13 sr20 has a 8 counterweight crank and hydraulic valvetrain. The b15 sr20 has a lighter (4 counterweight?) crank and roller valvetrain. Older sr20's also had a different intake manifold.

Jul 17th, 2002, 12:01 AM	#2 (permalink)
blackb13 Posts: n/a	The b13 sr20 has a 8 counterweight crank and hydraulic valvetrain. The b15 sr20 has a lighter (4 counterweight?) crank and roller valvetrain. Older sr20's also had a different intake manifold.