I currently have these mated with Skunk2 Retainers in my head. Portflow states that their valve springs are good for cams up to 12mm lift. I was wondering if anyone here is using them with jun3 or skunk2 stage cams? The skunk2 stage 2 intake cam has 12.3 mm lift but i still have heard of people running them on portflow valvetrain with no problem. C-speedracing's b20vtec integra also uses the jun3 cams with portflow valvetrain. Was wondering if i could get your opinions on this.

 

JUN3 and skunk2 are 12mm lift. Those springs will work fine.

 

Thanks, thats good news. Have you had personal experience with portflow valvetrain combined with either the skunk2 stage 2, jun3, or toda b?