Simon,
This problem comes up now and again on the list and as it seems like we
haven't collected enough data or quite worked out exactly why it happens on
some cars and not others to give you a precise "this is the way to fix the
problem" type answer.
I have a theory that it only happens when you use the 200B rotors that have
the smaller hub height of 43.6 mm as opposed to the more common 48 mm rotors
but it's only an observed hunch with little to back it up. I have never had
the problem but one Datto that I saw that did actually had the 48 mm rotors
but the tie rod end and the ball joints were absolutely rooted and that was
the cause of the contact which was mainly occurring under heavy braking and
not going around corners with a high load on the wheel. The front suspension
was brand new on this car and there was no flex in this area so the control
arm must have been moving outward under brakes. We replaced the worn
components ($$) and then the control arm didn't even come into contact with
the dust cover and if everything is in good shape under there nor should it.
A lot of us grind the ends of the control arm which will usually fixes the
disc scoring problem but I'm sure there is a more serious problem with the
combination of components used or wear in other components that's not being
addressed with that solution. Another thing is that a lot of us don't fit
the dust cover and this exposes the disc to this sort of damage.
The minimum thickness of the 200B disc is 10.5 mm. Unfortunately you could
need quite a lot of replacement parts and have it checked out by a
suspension place to get a second opinion if you don't know anyone that could
do it for you - don't tell them anything, it's just in for a checkup -
Pedders do a 28 point suspension check for $14 every now and again.
Obviously you will need replacement rotors but 200B stuff is dirt cheap
either at the wreckers or even in the local paper. You have to match the hub
height of the existing rotors as there are 2 types and the callipers/pads to
suite each type are slightly different.
regards
Terry
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of simon
waterhouse
Sent: Sunday, 17 September 2000 11:00 AM
To: [EMAIL PROTECTED]
Subject: lower control arms (long)
Listers,
Just doing a bit of under car maintenance and pulling stuff apart to have a
snoop.
I've got 240k struts up front with sumitimo (spelling)calipers and 200b
discs. Took the calipers off and found the lower control arms have ground
out the inside of both my front discs :(
Is the best way to fix this to angle grind some of the tip of the control
arm or is there something else.
Also what is the minimum width of a 200b disc as one is about 11.5mm and the
other is about 9.5mm.
The l/c arm has taken out a gash of about .5-1.5mm gash in the disc and you
can imagine the shape of the pads.
do i need new stuff (discs,pads) i assume so.
anyone got any suggestions for a sob with no money and little skills
lol
thanks Simon
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