[DAMotorsports]

Originally Posted by OrbitalEllipses

I've heard this valve springs thing before - from someone that built their engine. @CSG Mike what's your reference point? You guys popped two blocks, but where are you coming from in saying the valve springs are scary, nomsayin'?

Originally Posted by King Tut

I find it hard to believe that the OEMs would make a valve spring that wouldn't work with an extra 600 RPM in this day and age. I have yet to hear of anyone breaking a valve spring or floating a valve on this motor.

Originally Posted by CSG Mike

We may have purchased a single OEM spring to test the rate... we were going to increase our redline until we had it in our hands.

Remember, we come from Honda backgrounds... we like high redlines.

Mike we would have given you the information about the springs as we have posted about the poor spring which are in the FA20. We found they have an install pressure of 35 lbs and at .005 lift it was 55 lbs. The rocker designs in similar to the 2AZ motor. However we have some advantages over the 2AZ uses a hydraulic lifter and the rocker arm has a slightly smaller pocket for the valve lash cap and lifter. The FA20 uses a solid lifter and the rocker that has a touch deeper slotting. We meet with Papadakis Racing last week and compared the 2AZ stock part, their upgraded 2AZ kit and the FA20 parts. At this time the best solution to control the rocker is to upgrade the springs as we have already done.