 Minimum Rotor Thickness |
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| yeahmag |
 Oct 18 2011, 06:11 PM
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#1
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Advanced Member  Group: Members Posts: 2,455 Joined: 18-April 05 From: Pasadena, CA Member No.: 3,946 Region Association: Southern California 
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My Chilton's (or whatever book it is) states .394" as the minimum thickness for the front rotors. Is that the correct value? Both sets I have (used) are measuring at roughly .345".
-Aaron |
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Replies(1 - 6)
| yeahmag |
Oct 18 2011, 06:20 PM
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#2
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Advanced Member Group: Members Posts: 2,455 Joined: 18-April 05 From: Pasadena, CA Member No.: 3,946 Region Association: Southern California
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Think I just answered my own question... I found a stamp on them on the "hat" saying minimum of .374".
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| Valy |
Oct 18 2011, 06:24 PM
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#3
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Senior Member Group: Members Posts: 1,677 Joined: 6-April 10 From: Sunnyvale, CA Member No.: 11,573 Region Association: Northern California |
QUOTE(yeahmag @ Oct 18 2011, 05:20 PM)  Think I just answered my own question... I found a stamp on them on the "hat" saying minimum of .374". Isn't this forum great? (IMG:style_emoticons/default/clap23.gif) |
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| 76-914 |
Oct 18 2011, 07:23 PM
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#4
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Repeat Offender & Resident Subaru Antagonist Group: Members Posts: 13,739 Joined: 23-January 09 From: Temecula, CA Member No.: 9,964 Region Association: Southern California
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QUOTE(yeahmag @ Oct 18 2011, 05:20 PM) Think I just answered my own question... I found a stamp on them on the "hat" saying minimum of .374". I've got one that is .373 and needs to be turned if you like to live on the edge. (IMG:style_emoticons/default/happy11.gif) |
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| jcd914 |
Oct 19 2011, 06:08 PM
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#5
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Advanced Member Group: Members Posts: 2,096 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
You are asking about Front rotors, correct?
0.394 & 0.374 are both correct but different specs. They can be machined to 0.394 they can be worn down to 0.374 Factory specs (mm): (I did the mm to in conversions) Thickness New: 11mm +0.05mm -0.15mm (0.4331in +0.002in -.006in) Min. Thickness after machining 10.0mm (0.394in) Wear Limit 9.5mm (0.374in) Jim |
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| matt5596 |
Mar 25 2013, 08:27 PM
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#6
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Member Group: Members Posts: 102 Joined: 28-September 11 From: Norris, TN Member No.: 13,619 Region Association: South East States |
QUOTE(jcd914 @ Oct 19 2011, 08:08 PM) You are asking about Front rotors, correct? 0.394 & 0.374 are both correct but different specs. They can be machined to 0.394 they can be worn down to 0.374 Factory specs (mm): (I did the mm to in conversions) Thickness New: 11mm +0.05mm -0.15mm (0.4331in +0.002in -.006in) Min. Thickness after machining 10.0mm (0.394in) Wear Limit 9.5mm (0.374in) Jim What about rear rotors? |
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| jcd914 |
Mar 26 2013, 12:27 AM
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#7
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Advanced Member Group: Members Posts: 2,096 Joined: 7-February 08 From: Sacramento, CA Member No.: 8,684 Region Association: Northern California |
QUOTE(matt5596 @ Mar 25 2013, 07:27 PM) QUOTE(jcd914 @ Oct 19 2011, 08:08 PM) You are asking about Front rotors, correct? 0.394 & 0.374 are both correct but different specs. They can be machined to 0.394 they can be worn down to 0.374 Factory specs (mm): (I did the mm to in conversions) Thickness New: 11mm +0.05mm -0.15mm (0.4331in +0.002in -.006in) Min. Thickness after machining 10.0mm (0.394in) Wear Limit 9.5mm (0.374in) Jim What about rear rotors? These specs are not from a factory manual (don't know where my factory spec book is). These are from a Peter R.D. Russek VW/Porsche 914/4 Repair Guide, I found on-line a couple years ago. It is a nice little manual to have, little as in it fit in the glove box and can be with your 914 at all times. All the info looks like it came from Porsche. Thickness New: 9.5mm (0.374in) Min. Thickness after machining 8.9mm (0.350in) Variation in thickness 0.2mm(0.008in) No wear limit is listed in this manual Jim |
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