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slantvaliant
 Post subject: GM Math
PostPosted: Sat Apr 29, 2006 9:47 pm 
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Turbo EFI
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Joined: Tue Feb 18, 2003 7:34 am
Posts: 2479
Location: Lubbock, Texas
Car Model: 1964 Plymouth Valiant V200 Sedan
After doing a little brake checkup on my Valiant, I decided to take a look at the rotors on my wife's '04 Cavalier. Does anyone notice something odd about the minimum thickness specs?

Image

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1964 Valiant V200, 225/Pushbutton 904
BBD, CAI, HEI, LBP, AC, AM/FM/USB, EIEIO
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emsvitil
 Post subject:
PostPosted: Sat Apr 29, 2006 10:10 pm 
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Supercharged

Joined: Thu May 12, 2005 11:50 pm
Posts: 6291
Location: So California
Car Model: 64 Plymouth Valiant
I didn't know 18.70mm = 1.36"


:?

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

8)
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Reed
 Post subject:
PostPosted: Sat Apr 29, 2006 10:25 pm 
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Supercharged
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Joined: Sun Nov 03, 2002 9:20 pm
Posts: 13396
Location: Fircrest, WA
Car Model: 76 D100
18.7 millimeter = 0.736 220 472 inch :roll:
Must be because they sell thicker brake pads in the parts of the world that use the metric system. Yeah, thats the ticket, yeah...
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emsvitil
 Post subject:
PostPosted: Sat Apr 29, 2006 10:31 pm 
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Supercharged

Joined: Thu May 12, 2005 11:50 pm
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Location: So California
Car Model: 64 Plymouth Valiant
Maybe its Canadian millimeters?????????

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Ed
64 Valiant 225 / 904 / 42:1 manual steering / 9" drum brakes

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Slant n' Rant
 Post subject:
PostPosted: Sun Apr 30, 2006 12:43 am 
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TBI Slant 6

Joined: Sun Apr 23, 2006 5:13 pm
Posts: 248
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Typo, I didnt know there was an 'exchange' rate on measurement too!

$1 american= $I.30 canadian

1 inch = 254 millimeters

( :D + :( - :x ) - :oops:+ :idea: = 8) ( to the positive power, dude)
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Dart270
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PostPosted: Sun Apr 30, 2006 3:58 am 
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Joined: Mon Oct 21, 2002 11:08 am
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Location: Blacksburg, VA
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That just means they're out of spec in the US, even if they're brand new! :oops:

Lou

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james longhurst
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PostPosted: Sun Apr 30, 2006 4:58 am 
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Location: Asheville, NC
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Quote:
Maybe its Canadian millimeters?????????
chinese millimeters?

-james

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xwaynestaticx03
 Post subject:
PostPosted: Sun Apr 30, 2006 8:45 am 
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3 Deuce Weber

Joined: Wed Mar 01, 2006 1:33 pm
Posts: 72
Location: syracuse, ny
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just wait until you have to replace the rear drums years from now, theres 2 or 3 different options... why, i do not know

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Luthastro
 Post subject: Re: GM Math
PostPosted: Sun Apr 30, 2006 8:52 am 
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TBI Slant 6

Joined: Sat Apr 01, 2006 11:46 am
Posts: 121
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Quote:
After doing a little brake checkup on my Valiant, I decided to take a look at the rotors on my wife's '04 Cavalier. Does anyone notice something odd about the minimum thickness specs?
It's approximately equal to half the correct figure, but not even that by an eighth of an inch or so.
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slantvaliant
 Post subject:
PostPosted: Sun Apr 30, 2006 10:44 am 
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Turbo EFI
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Joined: Tue Feb 18, 2003 7:34 am
Posts: 2479
Location: Lubbock, Texas
Car Model: 1964 Plymouth Valiant V200 Sedan
25.4/18.70 = 1.36
Someone flubbed the conversion badly. Maybe a former NASA type?

The moral of the story? Always do a "make-sense check" on the numbers.

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"When you find a big kettle of crazy, it's best not to stir it." - Pointy-haired Boss

1964 Valiant V200, 225/Pushbutton 904
BBD, CAI, HEI, LBP, AC, AM/FM/USB, EIEIO
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Luthastro
 Post subject:
PostPosted: Sun Apr 30, 2006 11:24 am 
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TBI Slant 6

Joined: Sat Apr 01, 2006 11:46 am
Posts: 121
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Quote:
25.4/18.70 = 1.36
Someone flubbed the conversion badly. Maybe a former NASA type?
Sounds like something I would do. They divided when they should have multiplied. :?
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