Vibration At 100km/h

[Rekin]

Hey,

Ive noticed recently that when i reach 100km/h i get a huge vibration feeling throughout the car.

Cant even see through the rear view mirror as its vibrating.

Vibration can be felt through seat, gearstick etc basically the whole car.

This started to happen after a new clutch install...

Is there any chance this could be caused from the installation?

Thanks

[Abo Bob]

I reckon!!

Sorry for the totally unhelpful response.

[turboedsloth]

was the flywheel machined properly? wat sort of clutch was installed? was the tailshaft done up properly? is the crossmember rubber mount done up properly? the 2 little bolts in the middle of the crossmember get forgotten about alot

[Rekin]

flywheel was machined by workshop

exedy heavy duty clutch with 1050kg pressure plate

Not sure about all the other questions as workshop/mechanic did the swap.

Will be going tomorrow to have a talk.

Just wanted some info from SAU before i head over there

[turboedsloth]

no worries. i had a silvia come into my workshop once after some backyard mechanic did a clutch swap, vibration at 100km/h- tailshaft was loose all the bolts were finger tight

[Abo Bob]

Also if the tailshaft was unbolted at the yoke and bolted back on at 90 degrees to original it can cause this.

[Rekin]

Took it to a wheel/tyre specialist, they took car for a test drive and said it wasnt wheel balance/alignment related.

Taking car back to mechanic on Friday to see if he can fix the problem, mentioned to him that it could be tailshaft and he said it could be a possibility.

thanks turboedsloth

[GTAAAH]

Yeh, i suddenly had a haggard vibration through the tailshaft of my old gts-t once at a pretty high speed, arrived at home and had a look under the car, 1 of the bolts from the bracket that bolts the tailshaft to the undercarriage had fallen out and it was hanging on a 20 degree angle, luckily no damage, evil thing

[Rekin]

Just got back from mechanic which double checked the tailshaft.

Everything is tight and put back the correct way (tailshaft was marked upon removal etc)

Ill book in for a 4wheel balance regardless of what the test driver said, that way i will be 1000000% sure it isnt a balance problem hehe

[FVO]

I am having the same problem with my GTR. Judging by the fact that you have a GTS-T, helps me rule out anything to do with the 4WD system.

I can tell you it isn't a wheel balance because I just had new tyres put on a week ago accompanied by a full electronic wheel balance. Everything showed 100%.

I have been told it could be the diff and so far, I am believing it. If you find out before I do what the problem is, could you please let us know?

I'm in Melbourne too and wouldn't mind meeting up to know for sure if you're problem is the exact same as mine. Sounds like it though.

Fulvio.

[Rekin]

PM sent, mechanic also mentioned that if a wheel balance doesnt fix the issue, then it could be the diff.

Getting camber/castor/steering rack/pineapple bushes changed as we speak along with remove/replace of a leaking power steering rack.

I will let you know if i still have a vibration problem afterwards

[FVO]

Now that I think about it, the vibrating started after my clutch change, but I also had my tailshaft and diff rebuilt so i'm lost.

Thanks for the update and keep me posted.

[Rekin]

hrmm

well all my suspension bushes have been replaced and a 4wheel balance & wheel alignment were done yesterday.

Vibration is still there at 100km/h

Went back to the suspension place to double check everything, and he mentioned that if the vibration is felt through the back seat, floor etc then it is a driveline vibration.

Also mentioned that it is the tailshaft as in the r32 its in 2 parts or something and happened after clutch install.

[GTAAAH]

Hey one other thing is spacers, i've seen quite a few sets cause bad vibrations especially if they're cheap ones so if you've got some installed check that out too

[32GTRVSPECII]

Are all the clutch bolts done up properly?

Cheers, mick

[Nismoh]

i was having wicked bad vibes coming through around 100 cklicks for a bit...through it up on a hoist and my centre bearing may as well have been non existent... rubber had been serverly beaten... 70 bucks for a new one... good as gold now

[rb20-into-mr30=]

hey guys! i just had a similar prob, i had a gearbox replaced and the car had vibration

at over 80kph, it ended being the centre bearing was shit and the tailshaft needed to be 15mm longer. but the damage also went to the yoke seal on the gearbox.

best thing to do is take it to a driveline specialist. not including the price of the box,

that monkey mechanic who didn't check his work has cost me $1200.

could have bought a rb25det box after all,,

[tek_01]

excuse my stupidity but where is the centre bearing you speak of?

i have the same exact problem aswell, approx 105km/h and it shakes, only gets worse and you go faster too

have a feeling its the diff or gearbox as it makes a grinding noise between 2-2.5k on each gear aswell AND also can hear a bearing spinning noise (input shaft bearing?) when the clutch is not pressed and its sitting in neutral

[Nismoh]

tek 01, the centre bearing sits roughly half was between the gear box and the diff... best way to check if it's buggered or not is to through yourself under the car...may need to be jacked up at the rear and push and pull on you tail shaft, if it moves around and clunks it's stuffed... if it stays relativly 'center' it's not you centre bearing... we have a distributer in makcay called hardy n spice.... thats where i got mine from...they seem to know there stuff

[Nismoh]

have a feeling its the diff or gearbox as it makes a grinding noise between 2-2.5k on each gear aswell AND also can hear a bearing spinning noise (input shaft bearing?) when the clutch is not pressed and its sitting in neutral

sounds alot like your thrust bearing...is it absolutly every gear that it grinds at 2-2.5 k?........ how many K's on the car?