help..installed gears and clutch and have a vibration now and a whine!

[bugnout247]

so my so-called mustang expert friend and i installed a new fms heavy duty clutch and a set of USED 373 gears ...one thing is clear..we used the original shim size and it was not sufficient to prevent the whine..also the rear diff gasket leaked and ive driven it for a month or two low on oil...also...when i just put the car into gear and accelerate there is a clicking/snapping noise from what sounds like the clutch area cuz i can feel it in the clutch pedal but it goes away after 5mph+...today it seems that my car has started to vibrate immensely from the trans/shifter above 2000k rpm and sort of growls a bit... i've read previous similar posts so i'm wondering..what are the chances it is the incorrect pinion gear depth or maybe the driveshaft was bolted into different holes than they were originally..could it be my pilot bearing which i didnt replace? i did have to use the bolts to pull the trans onto the bell housing but i would think that if i messed up the pilot bearing doin this...it would vibrate immediately and not 2 months later...i am goin to replace the gears with new ones this week but this is all i can really afford...is my input shaft possibly in jeopardy?..i really really dont want to take my trans out and waste my time when i dont know what to look for and i dont wanna pay someone for all this cuz im nearly broke..i need some help guys

 

[slvrbullit302]

Did you mark the D/S when you removed so that you could reinstall it the way it came out? I too have had to pull the trans up by using the bolts to draw it tight and have never had anything damaging occur, usually the gap is less than a 1/2" when I did this. The vibration maybe the D/S more than likely or a U-joint gone bad and froze up. As for it being the rearend, I will leave that up to some other to offer their input as I have no clue about that area. Hope this sheds some light on your problems.

 

[bugnout247]

nah i didnt mark the driveshaft but the vibration has started to occur 2 months after i did the install..if it was the driveshaft...i would have thought that the vibration would have occured immediatly after the install, not 2 months later

 

[mustangjoe87]

did you have your flywheel resurfaced? it may be a clutch chatter especially if it is clunk ing when you are shifting into first at a stop im guessing but its food for thought.

 

[canadian94gt]

You should stop driving it like that and take it to someone who knows about gear installs. It is not really a do-it-yourselfer project. Sometimes it is better to spend the money and kick the buddy in the azz

 

[slvrbullit302]

On another note have you checked you Harmonic balancer, that could be starting to fail and may only be noticable above sertain RPM's.

 

[JJ95GTID]

Gears

Are those USED 3.73 gears FMS or FRPP? Using the original pinion shim is only valid in this case. If the gears are of a different make this technique doesn't work. Also, did the USED pinion gear already have a bearing and shim pressed on? If it was it was most likely already at the right pinion depth. Gear whine is usually a case of the pinion gear and ring gear being too close together. If you gotta do it yourself again put in a slightly thinner shim on the pinion gear.
Otherwise, I would advise to bite the bullet and have a pro reinstall the gears.

 

[Meangene21]

BAD Pinion spacing.. DId you replace both of the stupid Raises?

 

[Meangene21]

I had such bad spacing in my first attempt that when i put it into first there was a lot of clunking. Took the cover off and the S.O.B Pinion was sliding so much it actually started grinding on my Diff. I actually have teeth marks on the bad boy..

But its all good now

 

[bugnout247]

i didnt have the flywheel resurfaced but i knowthe sound of a chattering clutch..its not that...and i heard a new noise again today that i could feel in the shifter and the clutch pedal...its was a clicking noise that went in unison with the speed of the car as it slowed down..ie- as the car rolled to a stop, the clicking got slower and slower until i stopped...could that be the fact that i am using the stock self-adjusting clutch cable or is it something bad like the pilot bearing...as for the gears..im having a pro do them on monday but i dont think thatll fix the clutch noise/vibration issue...the whine will be gone but im afraid im gonna wreck my new clutch or trans input shaft or something...anyone have any experience with these sort of problem noises?

 

[cobra dave]

intalling used gears is always a bad idea. Everyone i know that has done this has always had a problem down the road. The wear pattern from the previous vehicle will never match up to what your vehicle will produce just like used cams. Just some friendly advise. As far as your problem at hand This guy used a pinion depth guage right?

 

[bugnout247]

ok, so $370 later i had my gears reinstalled by a pro that used the pinion depth tools and such so my gear whine is gone completely which is nice....but the vibration in my trans is not...i am starting to think that the pressure plate has come loose and out of balance or something because there wasnt any vibration when i first installed the new clutch..it started to happen a few months later...we didnt use lock-tite on the pressure plate bolts but im not sure if youre supposed to....being that i can feel the vibration when i rev the motor in neutral leads me to believe that the driveshaft is not in the wrong position and also a driveshaft problem would have arose immediately after the clutch install...should i take the trans out again and look and see if anything is loose...this i such a pain in the ass to do and im not convinced the problem wil be readily visable to me... or should i take it to a pro just to take my trans out to check and see if i did everything correctly..for a few hundreds dollars i dont have to spend...also....is there any chance that because i am still using the self adjusting clutch cable that the clutch is not totally disengaging when my foot is off the clutch pedal and in neutral thus causing the clicking noise that goes the same pace as my rpm's..i bought a new adjustable clutch and its in the mail but i cant keep throwing money at the problem