!44 front brake rotors

[arcturus]

H, what's the minimum thickness permissible after wear, before replacing the rotors?

[142 Guy]

The 1971 140 service manual specifies a minimum thickness of 13.14 mm for the B20E and 11.6mm for all other engines.

[arcturus]

Thanks, i should have mentioned it's B20 b 1969. I will settle for 12mm

[142 Guy]

Note that the 11.6 mm is the thickness after resurfacing to remove any ridges. If you are 12 mm after resurfacing it seems like you are good to go.

[arcturus]

Thanks for all info.I have gone ahead and ordered new rotors anyway. Taking everything into account, resurfacing cost of new rotors and time it's just as cost effective and more secure to replace everything at the same time time. can then forget about everything and enjoy driving without any future concern.

[142 Guy]

Originally Posted by arcturus

Thanks for all info.I have gone ahead and ordered new rotors anyway. Taking everything into account, resurfacing cost of new rotors and time it's just as cost effective and more secure to replace everything at the same time time. can then forget about everything and enjoy driving without any future concern.

The cost effectiveness (usually much lower cost to replace) would certainly jive with North American experience; but, I am not familiar with labour rates in Portugal. Most brake shops just flat out refuse to machine rotors, probably because they no longer have the lathe to do it. The only reason you take rotors to a proper machine shop for resurfacing ($$$) is if you cannot find replacements.