How many valve reliefs in the HF D15B6 engine?


Admin with a big stick
How many valve reliefs are in D15B6 pistons?

Q: Why does anyone care?
A: If you're going to swap the head on an HF engine to a 16 valve D series head, you might need a set of pistons with 4 valve reliefs each.

So here we go- courtesy of ryan89crx, who pulled the head on his 89 CRX HF just to see how many valve reliefs he had in his pistons. There are only 2 reliefs per piston. Thanks Ryan!