Join Date: Nov 2003
Location: Taos, New Mexico
2 liter vibrator
fivesay- I am curious to know what your experiences will be concerning the Spruell motor mount/trans. mount combo. After fitting a twinspark motor (balanced rotating assembly) in an otherwise stock 115 chassis and drivetrain using P. Spruell's round motor mounts w/ aluminum reinforcement cups and the old style "centered" trans. mount in my street driven GTV, I initially noticed no discernible difference in NVH. After maybe 2 yrs. and 2K miles I put the car on a hoist to solve a rattle in the exhaust system vs. floorpan area, and while it was up there "in the stirrups" I installed an additional pair of poly washers on the side of the trans. to take up lateral slop at the trans. mount.
That's the only thing I did that might have caused my current persistent RPM-related vibration which seems to have occurred as a result. Not too bad- just enough to buzz the mirror, dashboard components, interior hardware, your backside- goes away at revs above 3K. ARRRRGHHHHH! It vibrates in gear, out of gear, clutch in, clutch out, and may also just be related to hardening, aging rubber in one of these components. Anyone else have any experience? You might want to get a pair of rectangular "normal" motor mounts just in case. BYF!