Hey guys. Evan from Cobb just keeping you posted on Focus ST development. You guys gave Braden a shellacking for the motor movement comments and we've been doing quite a bit of digging on the subject. I've included a video of the stock rear motor mount movement and the movement with our Cobb prototype rear mount under some hard throttling in 1st gear (which did the best job at showing the movement). At this point, we don't think the engine is actually hitting the firewall (although it was never really intended to be taken literally). It was my belief all along that one of the accessories was making contact somewhere under the hood but thus far I've been unable to identify the culprit. What I think it might be is the upper mounts slamming to their limits, but please don't quote me on that. We are digging up all the GoPros we can find in order to get a glimpse of the problem.
This motor moves a lot. More than we anticipated. We believe the right durometer for this mount, while stiff, is actually going to be an 85A urethane or equivalent. From testing various combinations, we've found it to be the happy medium that does a great job at reducing wheel hop and most notibly, getting rid of that atrocious BANG when you do a hard shift into second gear, all the while keeping those pesky vibrations to a tolerable level.