Quote Originally Posted by EvasiveEF9
89 CRx Si, 173K mi, purchased as shell, had d-series in it before I got it.
91 Civic hatch 212K mi at time of sale, had d-series until it hit probably 173K mi, then went b18a1
90 Civic hatch, 128K mi at time of sale, had d-series, currently owned by Saka

None of the three have seen that problem. It's gotta be due to the extra pull on the mounts that a turbo leaves. My LS motor was stock, but it's known to be a more torque-y motor.
Yea I have owned many many ef's and none had this problem.B16's/B18's/Dseries and still nothing.Maybe the problem is the owner strips out the rear mount threads or maybe cross threads it and eventually causes it to fail? I have no clue how but can agree more powerful swap could be the cause but what is the excuse for a Dseries or a rather stock B16?.It really is all too crazy.ahhahaa