...especially with an engine run in severe service, ie. cold weather driving with short trips. My experience with the pictured PI intake, and a Ford 3-2V intake is it will eat out the Al, eventually.
With the 3-2V, it burned a hole below the outside vertical wall below the center carb, and it was an obvious exhaust leak. The PI intake had compression in the crankcase pushing out the dip-stick, and an audible exhaust leak, louder when removing the breather/fill cap in the rocker cover.
![[linked image]](../../../../../../i58.photobucket.com/albums/g258/OHUQTU/MM4RD.jpg)