midwaymonsters

Since there was so much exhaust noise leaking into the cab, I decided to replace the back half of the exhaust system of our 2001 Civic with a new straight pipe and standard muffler since the pipe had a bend (there was also no resonator) and the glasspack muffler was too loud. I opted to not have a resonator installed to save money thinking that it wouldn't make that much of a difference, however, I should've added it when I had the pipe and muffler installed, not only for possible sound reduction, but also for increased efficiency. The car had front-end damage, which it had been repaired, however, my mechanic stated that the motor mount bushings may need to be replaced, which he thinks is the reason why there's noise inside the car. To me, it sounds more like an exhaust noise problem coming up front near the engine rather than a motor mount vibration issue. He did say that he didn't detect any leaks from the exhaust system. Since changing out the glasspack muffler, it is quieter inside and out, but there's still too much noise in the cab that could be reduced even more. Do you think adding a resonator would eliminate the remaining noise inside?

ezone

I know removing a resonator can add a whole lot of noise, so it stands to reason adding a resonator can reduce a lot of noise.






------If it got smacked in front, make sure the forward mount wasn't damaged...I've seen that break off of a chunk of the transmission...


If you think it might be mounts, place a floor jack under the drivetrain (use blocks of wood where necessary to prevent damage to the oil pan) and jack the engine/trans up JUST enough to lift the weight off the mounts. Does that change the noise significantly?

Someone else posted about mounts and ended up finding someone had not tightened the engine nose mount bracket after the timing belt job...
I know the 8th gens with a collapsed engine mount can transmit so much vibration it sounds like it's got a fart can muffler sticking out the back.

midwaymonsters

I'll do that and let you know the outcome. Thanks again, ezone!

rockyrock

What was the outcome?

midwaymonsters

I had the rear engine mount replaced, issue resolved!

rockyrock

Thanks man!!

midwaymonsters

U bet