juddering brakes.....
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juddering brakes.....
My brother just rung me and said hes fitted some new pads and discs to his 16v over the weekend but he reckons theres a juddering past 20mph.he says the steering wheel dont shake as thought it may of been his wheel balancing but it doesnt seem to be.
any help would be appreciated
any help would be appreciated
- ClubCalibra.net
- Posts: 1383
- Joined: Tue May 11, 2004 12:00 pm
Mine is doing the same at the minute, but only seems to do it when I put the clutch in. Its off to the mechanic on Tuesday so will let you know what he says. [img]/smile.gif[/img]
I thought it might have been the suspension, and someone mentioned something about my bush [img]/smile.gif[/img]
I thought it might have been the suspension, and someone mentioned something about my bush [img]/smile.gif[/img]
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Alcofrolic
But seriously.. if he has aftermarket rims on, these require spiggot rings to keep the wheel concentric.
It is easy to have the wheels off, loose the rings and put them back on with just the bolts lining the wheels up.
One of them was missing on mine when I got it. vibrations over 30 mph..... fixed it now.. Maybe the same has happened here...
good luck
It is easy to have the wheels off, loose the rings and put them back on with just the bolts lining the wheels up.
One of them was missing on mine when I got it. vibrations over 30 mph..... fixed it now.. Maybe the same has happened here...
good luck
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ice man
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tb303
<!--QuoteBegin-tb303+--><div class='quotetop'>(tb303)</div><div class='quotemain'><!--QuoteEBegin-->my steering wheel is shaking at speeds around 100km. when past 120km it goes away.
wheel balancing?<!--QuoteEnd--></div><!--QuoteEEnd-->
Yeah, as above too, poor wheel balancing is the cause..
If it comes at a certain speed then goes away almost completely at a higher speed this is due to poor wheel banacing alone.
if it gets progressively worse from say 20 mph upwards then this is due to incorrectly located wheels, as not only are they out of balance because of their position being eccentric, but they are also changing the rolling radius causing the hub to accelerate / decelerate and move up and down during each revolution of the wheel.
Have you ever seen one of those trick bikes at the fair? not the one with the reverse handlebars, the one with the off centre wheels... that is an exaggeration of what missing spiggot rings does for your wheels.
wheel balancing?<!--QuoteEnd--></div><!--QuoteEEnd-->
Yeah, as above too, poor wheel balancing is the cause..
If it comes at a certain speed then goes away almost completely at a higher speed this is due to poor wheel banacing alone.
if it gets progressively worse from say 20 mph upwards then this is due to incorrectly located wheels, as not only are they out of balance because of their position being eccentric, but they are also changing the rolling radius causing the hub to accelerate / decelerate and move up and down during each revolution of the wheel.
Have you ever seen one of those trick bikes at the fair? not the one with the reverse handlebars, the one with the off centre wheels... that is an exaggeration of what missing spiggot rings does for your wheels.
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ice man
I had a bad judder on the front end of mine that i couldn't suss out. I had recently done discs and pads. Also had the wheel balancing checked and it was ok. I spent a couple of week monitoring it and noting when it seemed worse etc.
It was usually when the car hadn't been used for a couple of days and very noticable under heavy acceleration.
It turned out to be worn driveshaft CV joints!! At that point mine had covered 130,000miles.
Baz,
I'm not saying this is exactly what's wrong with your brothers car, but depending on mileage it could be (or at least a contributing factor).
I would start with the simple, cheap, things first. Like people have said, wheel balancing etc (you've alredy ruled out warped brake discs).
If it's a redtop, something to consider would be the O/S driveshaft bearing carrier (it's bolted to the back of the block on the opposite side of the engine to the gearbox and supports the driveshaft).
Apparently when they wear they can allow the intermediate shaft to whip (rotate excentrically), which will send a judder through the car. The bearing is around £18-£25, but dunno how much of a pain it is to replace or how much it will cost to have a garage replace it.
But again there's no guarantee that this is the problem. You'll just have to systematically check things and rule them out untill you find the culprit.
Good luck!!!
It was usually when the car hadn't been used for a couple of days and very noticable under heavy acceleration.
It turned out to be worn driveshaft CV joints!! At that point mine had covered 130,000miles.
Baz,
I'm not saying this is exactly what's wrong with your brothers car, but depending on mileage it could be (or at least a contributing factor).
I would start with the simple, cheap, things first. Like people have said, wheel balancing etc (you've alredy ruled out warped brake discs).
If it's a redtop, something to consider would be the O/S driveshaft bearing carrier (it's bolted to the back of the block on the opposite side of the engine to the gearbox and supports the driveshaft).
Apparently when they wear they can allow the intermediate shaft to whip (rotate excentrically), which will send a judder through the car. The bearing is around £18-£25, but dunno how much of a pain it is to replace or how much it will cost to have a garage replace it.
But again there's no guarantee that this is the problem. You'll just have to systematically check things and rule them out untill you find the culprit.
Good luck!!!
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TommyC
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