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e39525iM

L98 into an E36 coupe.

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59 minutes ago, Gaz said:

If a vehicle comes with bump stops then it needs bump stops for the WOF. They can also fail you on brake rotors if they suspect they are undersized, it is then up to you to prove otherwise

Dont they need to measure the rotors for thickness, not just if they suspect it?

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1 minute ago, zero said:

Dont they need to measure the rotors for thickness, not just if they suspect it?

No...visual only... you need to then be able to show proof of compliance

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1 minute ago, zero said:

Dont they need to measure the rotors for thickness, not just if they suspect it?

Depends where you go. A mechanic would more than likely wheels off and measure properly as long as the discs had the min thickness stamped on them, but a testing station wouldnt. 

Same goes for window tints, if there are no markings then they can be failed and up to you to prove that they are ok

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On 11/28/2018 at 7:12 PM, M3AN said:

They measured the brake rotors?

And bump stops are not a matter for a WoF, many cars come from the factory without them.

How do you not notice missing wheel bolts... on all 

On 11/28/2018 at 7:12 PM, M3AN said:

They measured the brake rotors?

And bump stops are not a matter for a WoF, many cars come from the factory without them.

How do you not notice missing wheel bolts... on all wheels? lol.

 

 

Oi.....loose nuts are an issue. 😆😆😆

Missing wheel nuts🤔

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5 hours ago, zero said:

Dont they need to measure the rotors for thickness, not just if they suspect it?

If there is a major lip on the edge or the condition of it seems too thin... then they'd measure brru

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Edited by e39525iM

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6 hours ago, Gaz said:

If a vehicle comes with bump stops then it needs bump stops for the WOF. They can also fail you on brake rotors if they suspect they are undersized, it is then up to you to prove otherwise

That's fascinating... I believe you but it seems totally arbitrary...

...for a start how do they know if the vehicle came standard with bump stops or not? e.g. E36 Ti none at the rear and other E36's do have them... no workshop can be expected to police that and no consumer could be expected to prove it... also, you can't test them even if they are present... so what constitutes a viable bump stop?

...and there's no plausible way for a mechanic to determine if a specific diameter rotor is good/bad/acceptable/etc nor can they reasonably look that up and a consumer can't prove it (in any practical sense) one way or another... rotor diameter isn't even a valid metric with respect to absolute brake performance...

I'd be quite interested in failing on one of those points because you can be sure as hell I'd be disputing it!

If it weren't a PITA I'd remove my rear bump stops just to see what happened at the next WoF lol.

Just goes to show how subjective a safety test, that should be objective, really is.

 

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It's not the diameter it's the thickness which should be stamped on the rotors. At least with genuine ones they are

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1 hour ago, M3AN said:

That's fascinating... I believe you but it seems totally arbitrary...

...for a start how do they know if the vehicle came standard with bump stops or not? e.g. E36 Ti none at the rear and other E36's do have them... no workshop can be expected to police that and no consumer could be expected to prove it... also, you can't test them even if they are present... so what constitutes a viable bump stop?

...and there's no plausible way for a mechanic to determine if a specific diameter rotor is good/bad/acceptable/etc nor can they reasonably look that up and a consumer can't prove it (in any practical sense) one way or another... rotor diameter isn't even a valid metric with respect to absolute brake performance...

I'd be quite interested in failing on one of those points because you can be sure as hell I'd be disputing it!

If it weren't a PITA I'd remove my rear bump stops just to see what happened at the next WoF lol.

Just goes to show how subjective a safety test, that should be objective, really is.

 

Arbitrary, yes. Bump stops, I have removed completely perished ones from the front and rear of my old E36 sedan and nothing was said, so it completely comes down to the inspector at the time and whether they notice (and yes that was an inspection at VTNZ of all places).

Most OEM rotors have a minimum thickness stamped on them on the inside. If for some reason the inspector thinks they are under this minimum thickness, they can fail them on it. Rotor thickness is however a valid metric, once it gets too thin there are a few potential issues. Heat dissipation and overheating are a major concern with heavy braking, and there's always the slim chance (I say slim because I've never seen it happen but the potential apparently is there) that the pistons will come too far out of the calipers, causing major failure.

I agree completely that it is subjective, having spent time in Melbourne as a motor mechanic we couldn't fail brakes on visual inspections for anything other than fluid leaks, cracked hoses or worn pads/shoes. The system over there relies on wheels being removed and discs being measured, brake drums removed and linings inspected etc. Not just a quick glance and "hey that looks a bit thin, think I'll fail that", actual hard data. Unfortunately though, most WOF inspectors over here will stick to the whole "it's a visual inspection only" guideline that is the basis of the WOF system, and not go the extra yard to provide hard evidence that there is something wrong.

And then you get the d**k mechanics who tell you you have to replace the rotors, you aren't allowed to get them machined if they are within tolerance, all because they wrote down they must be replaced 🙄 - had that argument many years ago.

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2 hours ago, M3AN said:

...and there's no plausible way for a mechanic to determine if a specific diameter rotor is good/bad/acceptable/etc nor can they reasonably look that up and a consumer can't prove it (in any practical sense) one way or another... rotor diameter isn't even a valid metric with respect to absolute brake performance...

 

Thickness, not diameter.

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17 hours ago, zero said:

Thickness, not diameter.

I wondered about that and concluded (perhaps incorrectly) that "undersized" meant "the wrong size" rather than simply "worn" which would be a less ambiguous way of stating it.

On the basis that it's the width/thickness then yes, of course that should be check for any WoF.

Edit: if I got failed on missing bump stops I'd cut up a pool noodle, wrap that around the strut and ask them to prove they didn't work.

 

Edited by M3AN
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Aaaanyway...back to the build. 17 points to all you guys for the technical inputs.😉

Got mee some new pressure valves and washer nozzels and man do the work good🤗

My own lube concoction of half moly grease and copper grease for those beautiful hubs that wont let go of the wheel. 😎

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Edited by e39525iM
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All legal now boyz..🤗🤗

Bringing on them 16s for the rear..

Gutting this interior...

Dual caliper on the rear with hydraulic handbrake...😏 ...and   E46 front lower arms with steering lock kit...🤔...uhh...like to. 

 

 

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Edited by e39525iM
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