Oh My God What Now

[tiki240]

ok so you all know me by now and its an sr swap into a s13. for some reason, and all of a sudden, when i start to excelerate i get this horrible shaking in the whole car. it feel like its coming from the tranny/driveshaft. i didnt have this problem b4 and ive only had the SR running less than a week. 1st gear i get on the gas i can hear a bit of a squeak/squeal of metal on metal and around 2k if i give it gas i get this horrible shaking. my car sounds like those big dump trucks transmissions that are like GRRRRBRBRRRRR *CRUNCH* GRRRRRRHRRHR. etc etc. so, ANY IDEAS? also, tonight a friend driving behind me when i got on the gas to see if it happens in all the gears, said at times i had a steady stream of sparks coming from the right rear of the car. well out the rear anyways. this problem is really scary. like it goes hand in hand with my throttle. . push down on throttle past 2k get this horrible vibration ahking the car apart. push clutch in and rev up and no problems at all. happens in every gear. :wtc: whats wrong now?? also, my car is boosting 12psi for NO REASON its not spiking, its constantly hitting 12 psi. all i want it to run the stock 7psi. here are all my mods as of now.

red top SR 20det
trust 3' downpipe
3' catco cat
trust power extreme II cat back
suspension
cone intake
greddy type S bov (atomosphereic for now)
stock sidemount IC


PLEASE HELP

[Var]

y dont you jack the car up and drive it with the wheels in the air and have someone with eye protection check it out. It may be your driveshaft

[720_datsun]

Originally posted by westboroughpimp
y dont you jack the car up and drive it with the wheels in the air and have someone with eye protection check it out. It may be your driveshaft ummmmm i dont think thatd be go.......nvm just do it.

[holisticbeatz]

While you're inspecting the propeller shaft, be sure to take a look at the transmission mount as well.

[tiki240]

what about the tranny mount?

[Bill Roberts]

Chattering clutch? Maybe the Pressure plate bolts...some may have loostened.

I know one thing..I had my D shaft out and had to make a quick run to the hardware store and put two of the four rear bolts in for this low speed , low power trip and it vibrated like mad. D shaft balance is critical...as well as PP balance and clutch disc balance. You may have slung off a portion of the clutch disc. That would certainly describe your problem.

[tiki240]

well yeah i thought that at first but why the hell would the rubber piece between the tranny and drive shaft rpi to shreds? i wish i had a digi cam to show you. but its got ****ed up. like im thinkin maybe it was just old and the 250+hp i had was farking it up. grrrr.

[s14slide]

Wells if your friend can see sparks coming fromunda your car, chances are you'll be able to jack up the car and see where all those hot metal shavings are coming from using a simple tool called a flashlight and a pair or two of eyes. Then let us know what you found, and maybe some people here can even give you some advice as to how to go about fixiN it.

Simple, no??

[tiki240]

WHILE in the air, the car didnt shutter, didnt make the noise and shot no sparks. but the rubber peice that is right after the tranny and part of the driveshaft was torn to shreds. i have since ordered a new SR drive shaft with a ujoint instead of the rubber peice.

[Bill Roberts]

fromunda


I like that word...

Thanks!