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New gearbox = vibration 

 

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 Post subject: New gearbox = vibration
Posted: Wed May 11, 2005 8:51 pm 
Tyre Shredder
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G'day

Ive now had the gearbox in my wagon changed to a t5 from an ed. Now when i hit 2000-2400rpm the car has a vibration. I'm not sure if its coming from the box or the rear of the car.
The other thing that is bothering me is this whining noise, its in all the gears but at its worst in 2nd gear. The box has done 137000. Should i change the oil?

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Posted: Wed May 11, 2005 10:39 pm 
Fordmods Junkie
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most prolly the driveshaft.
i presume u changed the driveshaft?


also yes change the g/box oil to redline!

 

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Posted: Wed May 11, 2005 11:28 pm 
Getting Side Ways
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Is the problem there if you apply the clutch?
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Posted: Thu May 12, 2005 1:22 am 
Getting Side Ways
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was the shaft lined up to the original position at the diff? if it was try flipping it 180 deg at the transmission but keep at original position at the diff. the shaft should have yellow dots on both ends, they represent the lighter side of shaft after balancing and at factory are placed to give a correct system balance.
Also make sure all the transmission mounting bolts are tight.
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Posted: Thu May 12, 2005 2:19 pm 
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Whinning noise when your clutch is engaded (basically when your driving in gear or while you put is OFF the clutch) is probably the bearing - One of 2 possibilities = Pilot or thrust bearing, both are cheap parts (10 bucks or so). But getting the whole box out is a b**ch.

This happened to me a few months ago.

Good Luck!

 

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Posted: Thu May 12, 2005 8:32 pm 
Tyre Shredder
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G'day

The tail shaft is out of another car, i have the original, it has the yellow marks on it. The problem being that the diff was changed about a month ago and i dont know where i should have lined it up. The guy that put it in changed the tail shaft to the one that came with the diff. The yolks that go into the gearbox are different on each shaft. The new shaft fits the new box, the other one doesn't.

The vibration is at its worst under acceleration. If i leave the clutch out and the car rolls it still does it but not as bad. It does it in 1st and 2nd gear but not in the others. If i put the clutch to the floor it doesn't do it at all.
If it were the tail shaft wouldn't it do it all the time at a certain speed. I cant work it out.

Cheers

 

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Posted: Thu May 12, 2005 9:42 pm 
Tyre Shredder
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im guess you put a new spigot bearing in the crank when you changed boxes? my box made a whining noise till i replaced the oil with plain ol dextron atf works a treat, i had vibrations but since replacin gmy uni joints been fine

 

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Posted: Thu May 12, 2005 10:23 pm 
Tyre Shredder
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Wheres the spigot bearing. I replaced the bearing on the input shaft of the gearbox if thats what it is.

Could the vibrations be because of a cactas harmonic balancer.

Cheers

 

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Posted: Sat May 14, 2005 1:03 am 
Getting Side Ways
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being a different shaft that you have no idea what it was like before you had it installed it may be wise to have the UJ's checked/replaced and balanced.
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