Teach me about ITR 325's
- Thread starter ekim952522000
- Start date
Z3_GoCar
New member
Josh,
Something completly analouguos, that I know about. Does the TIS for the Z3 have the factory proceedure for fixing a cracked differential mount? I know that I've seen several where the dealer will weld a second mount over the first. However, it seems the dealer has to bring in an rep to tell them how to perform the repair, thus avoiding the documentation and resulting liability if something goes wrong with the repair. Maybe it's a similar kind of situation... non-documented dealer/factory repairs.
James
Something completly analouguos, that I know about. Does the TIS for the Z3 have the factory proceedure for fixing a cracked differential mount? I know that I've seen several where the dealer will weld a second mount over the first. However, it seems the dealer has to bring in an rep to tell them how to perform the repair, thus avoiding the documentation and resulting liability if something goes wrong with the repair. Maybe it's a similar kind of situation... non-documented dealer/factory repairs.
James
The part about them being under the category rules for suspension...?
Of course, if we're agreeing that any bushing that suspends anything is free, let me know...'cause you ain't gonna like the results...just sayin'...
GA, who's really hoping our BMW friends are not replacing their rubber caliper bushings with anything non-rubber...
JoshS
New member
I've never seen any acknowledgement by BMW for the diff mount/trunk floor problem, just like I've never seen anything for the E36 problem.
Therefore, such a dealer-installed repair would not be legal in IT, even if a verbal agreement with a BMWNA employee allowed BMWNA to pay for the repair.
Mine are stock, but I thought this went back and forth several years ago...with the end interpretation being bushings are free. I could be mistaken. I thought it was around the whole spherical "bushings" and "air bushing" era.
From the GCR;
bushing- a sleeve or tubular insert, whose purpose is to reduce the dimension(s) of an existing hole. A protective liner that cushions noise, friction, or movement such as a rod end or spherical bearing.
The suspension section clearly states bushing material is unrestricted as we all know.
The brake section states that brake linings are unrestricted....what's the difference between a liner and a lining?
Brake connectors are unrestricted. Isn't a connector something that "connects" the something to something else? As in the caliper to the car? Seeing how lining and connector aren't defined in the GCR I'm unsure. I think this subject is pretty gray...as I stated before mine are stock so don't be a hater....just posing a counterpoint.
R
JoshS
New member
Mine are stock, but I thought this went back and forth several years ago...with the end interpretation being bushings are free. I could be mistaken. I thought it was around the whole spherical "bushings" and "air bushing" era.
From the GCR;
bushing- a sleeve or tubular insert, whose purpose is to reduce the dimension(s) of an existing hole. A protective liner that cushions noise, friction, or movement such as a rod end or spherical bearing.
The suspension section clearly states bushing material is unrestricted as we all know.
The brake section states that brake linings are unrestricted....what's the difference between a liner and a lining?
I think this subject is pretty gray...as I stated before mine are stock so don't be a hater....just posing a counterpoint.
R
I find that all to be a ridiculously tortured interpretation.
A brake lining is the actual brake pad/shoe material. The "connector" being referred to is the hydraulic connector. That entire paragraph is about hydraulics. Context matters.
Not even remotely gray in my opinion.
Andy Bettencourt
Super Moderator
+1.
But Josh those are YOUR definitions not the GCR's, The GCR doesn't define these things so variability (creep) gets introduced.
SoI guess the ITAC guys get to decide what's rediculously tortured...
Let's go back to "air as a bushing" and truly talk about what's tortured.
R
JoshS
New member
Of course these are all just my opinions. In my current role I don't get to decide this stuff. But in the past I have served on both protest and appeals committees, and I know how the committees that I have served on would have interpreted these situations. I think that 99 out of 100 appeals committees would agree with me. Unfortunately, too often, these things never get protested/appealed.
That past experience is part of why I have such a conservative read on the allowances.
Andy Bettencourt
Super Moderator
Oye. Looks like it's time to tear some cars down in NER.
+100
While were at it we should clean up the on track antics as those have gotten out of hand too.
R
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Ridiculous. Not even remotely legal, or gray.
ekim952522000
New member
Does anyone have a link to the bushings you guys are talking about?
JoshS
New member
Here you go Mike:
http://www.turnermotorsport.com/html/detail.asp?PRODUCT_ID=CBMW1
The issue is that all of these cars have single-piston sliding calipers, and the caliper slides on metal pin, but with a rubber bushing. The brake can feel really squishy and cause uneven pad wear due to the flexibility in the rubber, especially as the pads get low and the piston is extended.
These metal replacements are very common for track cars and BMWCCA club racing.
Ron Earp
Administrator
Oh my goodness!!!
You mean the designers of The Ultimate Driving Machine have made an engineering error that leads to their creation having a perceived flaw for track use?
No way, I don't believe it. All the BMW Club track days start out with "Your BMW was born and bred for the track, it'll be fine to use just as is...."
Heaven forbid we get uneven pad wear and a really squishy pedal.....Jeez, I wish that was all I had to worry about on my IT dinosaur.
And air as a bushing is justifiable in your mind....give me a break. Is air then justifiable as a washer bottle or wiring harness in your mind?
R