So after examining and comparing the
TTR with the SXTH and Boomba lower engine mounts, I've found significance differences in design and effect. I believe I've narrowed down why the SXTH and Boomba don't eliminate wheel hop altogether and actually increase NVH.
There is literally nothing to stop the Boomba and SXTH mounts from moving up and down. They utilizes round bushings at both attachment points. Their rear brackets swivel, just as the front. So, both attachments points are free to swivel on a circular axis. This
^, transmits the engine torque into up and down movement. Hence, more NVH & wheel hop IMO.
You have seen how easily the OEM upper mount flexes and moves in the photos I posted. If you don't deal with the upper mount movement, you're not going to minimize the slapping back and forth that occurs with the engine. This combined with the extra up/down movement allows the engine and suspension to bounce violently as the tires break traction, also when you shift into a higher gear.
The
TTR mount doesn't swivel on the rear axis. It's mounted solidly to the rear attachment point. So It's remains static and straight. With the square and oval bushings, there is far less up/down movement. Combined with the
TTR upper mount, the engine simply moves back/forward, with much less force.
So this equates into;
no sharp clunking from the engine bracket, as it's grounding on the upper mount under hard acceleration. Also,
no adverse up/down engine movement, which translates into wheel hop.
In my informed opinion, a great combination and worth the expense.
