11-06-2008, 10:02 PM | #1 |
5.slo stanger
Join Date: Jan 2007
Location: oxford alabama
Posts: 735
|
driveshaft vibration
in my old car there is a bad vibration in 5th gear right about 2300rpm and above the faster you go the more violent it gets it only happened after the new t-5 nothing was changed with the drivshaft i have not ckeacked the ujoint but i really dont know what im looking for in the ujoint's should riot(jason) have the driveshaft balanced or just u joints im kinda lost
thanks taylor
__________________
no mustangs anymore but i do have a 1jz swapped 83 supra |
11-06-2008, 10:12 PM | #2 |
Gone but not forgotten
Join Date: May 2008
Location: 4/08/2013. Went to the man upstairs. RIP
Posts: 955
|
Trying to remember - did you just do an auto to 5-speed conversion? Either way, first make sure your driveshaft bolts are tight. Your yokes should be neither stiff, nor sloppy. If all is good there, I can't see an imballanced driveshaft being that violent.
__________________
-Don 86GT (sleeping in the garage for now) 87 T-bird Turbo Coupe (daily driver) 87 Ranger ($100 work truck) Meat is murder!... Tasty, tasty murder. |
11-06-2008, 10:57 PM | #3 | |
Senior Member
Join Date: Dec 2005
Location: The conservative underground
Posts: 341
|
Quote:
__________________
89LX Hatch 89LX Coupe 89GT 90GT 93GT |
|
11-07-2008, 06:37 AM | #4 |
3v's are slow
Join Date: Dec 2004
Location: Here and There
Posts: 17,152
|
The balance marks are not lined up. There should be a paint mark on the pinion flange and one on the d/shaft. If you still have a stock d/shaft the marking will be yellow. If you have the FMS aluminum shaft, it will be purple I think. Rotate the shaft until these marks line up
__________________
2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy |
11-07-2008, 06:50 AM | #5 |
Dayuuuuuuum!!!!!
Join Date: Dec 2004
Location: Dallas GA
Posts: 2,933
|
__________________
86 Mustang Gt......Mods piling up in my garage.
07 F350 dooly.....Tows my fifth wheel |
11-07-2008, 09:23 AM | #6 |
5.slo stanger
Join Date: Jan 2007
Location: oxford alabama
Posts: 735
|
lol at qckjuiced
but ne way no it has always been a 5speed somone told me to rotate the driveshaft 90 degrees util it stops but i havent had the time so i just posted it i will try it today and see if it works and yes lee it has the factory drive shafts but it also has the factory ujoint thats why i thought it could be them but when i am checking the u joints what am i looking for when looking for a bad u joint?
__________________
no mustangs anymore but i do have a 1jz swapped 83 supra |
11-07-2008, 09:33 AM | #7 |
Mind Blowing
Join Date: Jun 2006
Location: Dawsonville Ga
Posts: 3,913
|
on my 87 t-bird i had the same thing going on. pulled the drive shaft a few times and could not tell it had a bad u joint. so i just bought 2 new ones and when i pulled it apart the front u joint had about half the bearings missing in one of the caps. problem fixed.
but if it just started with a trans swap i would look there. is it a v8 5 speed?
__________________
Slow Joe Racing 2008 dodge ram 5.7 HEMI 1993 lx with a 289 and a 3 speed on the floor WTB 1955 t-bird project |
11-07-2008, 12:04 PM | #8 |
5.slo stanger
Join Date: Jan 2007
Location: oxford alabama
Posts: 735
|
yea v8 5spd i have put two other trannies in it that were in alot worsh condition then this one so i dont think it is this one im gonna rotate the shaft and see if that is it then the ujoints and then i guess ill see it is the same transmission that i got from coupe so i dont think it is the tranny i dealt w/ coupe alot and he is a very honest guy so i dont think he sold me abad tranny
__________________
no mustangs anymore but i do have a 1jz swapped 83 supra |
11-07-2008, 02:02 PM | #9 |
Trunk Monkey
Join Date: Jun 2007
Location: Home
Posts: 5,708
|
Does it still have the dogbone on the rear end?
__________________
Eric 89 LX Coupe-Juiced 01 Lightning-Boost 06 TBSS |
11-07-2008, 02:09 PM | #10 |
3v's are slow
Join Date: Dec 2004
Location: Here and There
Posts: 17,152
|
If the yellow marks are not lined up it will vibrate. The driveshafts mount a certain way to the pinion flange. Crawl under the car and line these marks back up and it will be as good as it is going to get
__________________
2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy |
|
|