Vibration and whining comming from rear
 

Whats up people, i have just recently swap my na from 1.6 to 1.8 and am using an nb 6 speed but still using my 4.1 diff. At the same time i did the swap i did a master bushing kit, for the first day it seemed fine and then randomly it started vibrating lightly and whining in higher gear at low rpm, but vibration gets worse with speed but eventually reaches A plateau . I wanted to see if anyone else has had a related problem. Ive heard it could possibly be a cracked PPF but im not seeing any visible cracks. Any one got any other suggestions?

Did you jack up the back of the trans before tightening the PPF?

If I recall, you'd have needed a 1.8L driveshaft for that swap. Check the ujoints for play and also ensure that the bolts on the flange to the diff are tightened properly

I guess i didnt jack up the trans before bolting on the ppf. Only to get it in The car right since i did the swap myself. i couldnt get the 6speed driveshaft to fit the 4.1 diff so i had to use the 1.6 5 speed shaft...wast any play in the joints before i put it back on and drive shaft to diff is good-n-tight

Based on the title I would say you need to get a less whiny boyfriend.