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Registered
Join Date: Oct 2002
Location: Tucson, AZ
Posts: 1,599
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Master cylinder question
Sorry to rehash what I'm sure has been discussed a few times before. I looked in the master cylinder upgrade tech article and could not find the answer. I took out my master cylinder and front brake lines today. The m.c. has the number '19' on the casting. This does not mean that it's a 19 mm - right??
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08-09-2003, 05:31 PM
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Registered
Join Date: Dec 1969
Location: chula vista ca usa
Posts: 5,716
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The only true way to find out the size is to measure it with a metric scale or caliper.
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08-09-2003, 05:53 PM
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Join Date: Oct 2002
Location: Tucson, AZ
Posts: 1,599
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John, then what you're saying is that '19' doesn't mean squat. So I'd assume it's a 17mm because from the appearance of things it looks like the original master cylinder, stock 914/4. Thanks ...
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08-09-2003, 06:20 PM
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Join Date: Jul 2001
Location: Jacksonville, FL., USA
Posts: 583
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John, are you sure about that??? I think the 19 means that it is a 19 mm master cylinder.
philinjax |
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08-10-2003, 03:53 AM
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Join Date: Oct 2002
Location: Tucson, AZ
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I took it apart this afternoon and measured the i.d. - it's 19mm! A pleasant surprise.
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08-10-2003, 04:17 PM
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Join Date: Aug 2001
Location: San Francisco Ca
Posts: 697
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The 19mm says "19"
__________________
1973 914 2.0 PCA Member GGRwww.pelicanparts.com/gallery/chrisreale/ www.914club.com |
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08-10-2003, 05:18 PM
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Registered
Join Date: Dec 1969
Location: chula vista ca usa
Posts: 5,716
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Since you measured it, you know for sure. I have come to not trust part numbers and such and even if a company says the part is the same, I measure it. As an example, a good friend of mine ordered replacement pistons for his racing 356 and put them right in and nearly blew the heads off since the pin hole dimensions were not quite the same!!?? 19mm m/cs are the way to go good luck.
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08-10-2003, 06:09 PM
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My 17mm MC had a 19 mark in it in the middle of its body. Once I got it out I found a 17 on the section near the brake pedal.
__________________
Christopher A. Landt 1979 911sc 1973 914 2.0 |
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08-11-2003, 03:54 PM
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1978 Porsche 911sc 3.0 CIS
