Quote:
Originally Posted by Jeffvette
Is it really vehicle speed related or is it engine RPM related?
So at 120, do you get the vibration in 3rd and 4th and 5th and 6th?
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The vibration is definetaly rpm/hard acceleration realated. The hum is wheel speed realated because at 120 when you take your foot off the gas and press the clutch in the rpm's go back down to 800 but the hum is still there and starts to fade as the car slows down. I don't have a loud exhuast system so I notice every noise. I'll check all the u-joints today and the motor mounts. When I replaced the clutch a year ago I put a new u-joint in the main drive shaft. It was a Napa performance series. I noticed it had a grease sert in it but I said the hell with it and put it in anyway's. Now as far as I know the rest of the u-joints are the original ones. But like I said this really bad vibration didn't start till after the last visit to the drag strip.
If one of the u-joints are cooked how can I tell? I assume I'll be able to grab whatever shaft its connected to and shake it to see if its loose. I know if a drive shaft is out of balance just a little bit they vibrate bad. How much are spicer u-joint a piece and where can I pick them up if need be?