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montyt
P Plater
18 Posts
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 Posted - 11 Feb 2009 : 5:45:58 PM
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Hi All
i have vn v8 manual comodore.
i have had the rear diff done recently. after the runn in period of the diff (where i was told not to do over 80kph) i did 100KPH and i now get tailsaft vibration.
now looking at tail shaft. the front UJ and the back UJ dont apear to be in line. back one seams to be about 20-30 deg out in refferance to the front UJ.
http://www.montinsin.com/bathurst/DSC00366.JPG
http://www.montinsin.com/bathurst/DSC00369.JPG
when i complained to the diff place.. they said that it needs ballance... is this bull**** ?
so.. should the front UJ be in same allignment as back UJ ?
i called a ballencing service and they stated that the tailshaft.
nothern diffs stated ballance was $280 they unfit and then refit.
ballancing services stated it was $105 (if i bring shaft to them)
should be ballanced every time the UJ's are changed.. any thoughts ???
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leebo
Fully Licenced
495 Posts
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Posted - 11 Feb 2009 : 5:55:10 PM
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| is your diff a minispool diff? |
I'll show you the Rick James cell. It's superfreaky!. |
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nodg
National Driver
1667 Posts
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Posted - 11 Feb 2009 : 6:01:49 PM
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its called phasing, a tailshaft should be phased evrytime its taken apart but usually mechanics simply put a marking on the tailshaft before its taken apart so it can be assembled in exactly the same position....
So im guessing the vibration came after you went over 100?? chances are its a coincidence and may be the centre bearing has sh1t itself, i doubt you damaged the tailshaft or diff by going over 100 once or twice.
Is your car lowered? could be you need a adjustable panhard rod and never noticed the angle of the tailshaft until now..... |
Cheers,
Nodg. |
Edited by - nodg on 11 Feb 2009 6:03:12 PM |
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jas89
Forum Moderator
779 Posts
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Posted - 12 Feb 2009 : 01:46:04 AM
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| also make sure teh bolts holding the tail shaft to the diff are tight. sometimes the mecahanics (and anyone working on cars) do forget to do a final tightening of these, although you would ntice it all teh time but ya never know |
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nodg
National Driver
1667 Posts
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Posted - 12 Feb 2009 : 05:57:30 AM
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| lol loosing your tailshaft halfway down the freeway... |
Cheers,
Nodg. |
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montyt
P Plater
18 Posts
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Posted - 12 Feb 2009 : 4:52:49 PM
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sorry for the late rely.
ive been busy with job interviews.
i dont believe that they would have pulled the tailsaft apart. there is no evedence that the have disasembeld the CV joint in the tail shaft.
the CV joint dosnt look like it has been changed / messed with.
i checked today that the clip hasnt come off and that they couldnt have accidently moved the back shaft with relation to the front shaft.
teh rear flange bolts to the diff were tight, and are again.
the tailsaft didnt vibrate before i had diff and UJ's done. i had driven the car for a month before getting the diff done.. it just used to wine like a pig...
im going to take the tailshaft assembly down to ballencing services in melbourne. they charge $99 +gst to ballance the tailshaft.
the diff is a LSD with was fully rebuilt. |
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hsv_babe
Fully Licenced
269 Posts
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Posted - 12 Feb 2009 : 6:49:55 PM
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| i think it might be the center main bearing too. I had the same problem with my vn rang the mechanic and he thought thats what it was and turned out the right. I think from memory it cost me about 20 bucks and haven't had a problem since. Mine was done about 3 years ago. My car is also lowered with the adjustable panhard rod. |
I'd gladly push my holden than drive a bloody ford! |
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leebo
Fully Licenced
495 Posts
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Posted - 12 Feb 2009 : 7:10:30 PM
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| hey hsv_babe to have to put on an adjustable pan rod, how bloody low is your car like do you have yours nearly on the ground mate? |
I'll show you the Rick James cell. It's superfreaky!. |
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hsv_babe
Fully Licenced
269 Posts
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Posted - 13 Feb 2009 : 11:48:20 AM
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| ha ha lol yeah mate its pretty bloody low! Gotta have it low as im a short arse! Plus it looks awesome lol! |
I'd gladly push my holden than drive a bloody ford! |
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Benche
Fully Licenced
240 Posts
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Posted - 13 Feb 2009 : 11:56:43 AM
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| my car used to rub on the guard until i put the adjustable panhard rod in. my diff is missing half a tooth and it single's left and right and its starting to vibrate. it has been through hell and back. my tail shaft bolts come loose every now and then i need to buy locktight and new bolts. |
VN V6 MANUAL - 14.1sec 1/4MILE, 150rwkw, 350nm |
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leebo
Fully Licenced
495 Posts
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Posted - 13 Feb 2009 : 4:32:58 PM
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I just wana say and i don't mean to be rude in this but montyt has this info help you , have you acknologed this help or have you fixed up the problem.
hope all is going well for you mate.
I only ask cos u havnt said much in reply |
I'll show you the Rick James cell. It's superfreaky!. |
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trizo
Forum Moderator
3091 Posts
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Posted - 14 Feb 2009 : 11:43:09 PM
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damn, I 'd h8 to b l8 4 dinner with u leebo  |
3 can keep a secret if 2 are dead |
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leebo
Fully Licenced
495 Posts
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Posted - 15 Feb 2009 : 5:23:14 PM
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yeah u would be really sorry to be late lol.
i only ask cos i didn't know if he had read the replys these bloke put their effort in2 but anyways. |
I'll show you the Rick James cell. It's superfreaky!. |
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trizo
Forum Moderator
3091 Posts
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Posted - 15 Feb 2009 : 5:41:11 PM
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m8 u need to relax,,,,, even if he doesnt, who are you to b putting a foot up members butts for not ( replying in the allocated time) (if there is one? ) . Dont meen to sound snappy but I'm just curious as to y a member should feel pressured into replying in a certain amount of time ( to another member )??? Relax m8 we all put time and a bit of thought into our replys but that doesnt meen that they will be read or responded to!!  |
3 can keep a secret if 2 are dead |
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VN91SX
Fully Licenced
344 Posts
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leebo
Fully Licenced
495 Posts
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Posted - 15 Feb 2009 : 10:14:40 PM
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yeah i know i got too much time on my hands since i lost my job in these lay off's.
yeah soz guys if I'm being a pushing idiot i do that sometimes just like to reply to evrything and help out who i can.
thanks for you honesty trizo |
I'll show you the Rick James cell. It's superfreaky!. |
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trizo
Forum Moderator
3091 Posts
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Posted - 16 Feb 2009 : 12:32:17 AM
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| nps m8, lets leave it there an move....@leebo you do a gd job m8 |
3 can keep a secret if 2 are dead |
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jas89
Forum Moderator
779 Posts
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Posted - 16 Feb 2009 : 01:40:48 AM
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also check the rear engin mount (if havent already)
also for $105 it wouldn't be a bad idea balancing the shaft (if cash aint a problem) but if i was to go with balancing the shaft i would replace the unis and center bearing |
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montyt
P Plater
18 Posts
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Posted - 20 Feb 2009 : 1:09:54 PM
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thanks to all for your feedback.
i took it to ballancing services nad they ballanced the shaft and all good.
cheep to .. $105 |
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trizo
Forum Moderator
3091 Posts
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Posted - 20 Feb 2009 : 5:05:46 PM
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SWWWEEEEETTTTTTTTTTTT
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3 can keep a secret if 2 are dead |
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