What year is your car? 74 was the last year for any US car to have front drum brakes with disc's as an option. After 74 all cars had disc's on the front. The thing that is needed to know is what year car did the disc brakes come off of to properly ID them? Also did you get the spindles with the disc brake setup. I understand that there is a slight difference in spindles from drum brakes to disc's, but both bolt on the same steering knuckle. I just unbolted the 4 bolts and took the whole setup spindles and all from the 79 Concord donor car and just unbolted the drum spindles and all and installed the disc's. Of course you need the disc brake hoses which I used new ones along with rebuilt calipers and had the rotors cut.. After 30 years of driving this car finally I can beat on it with no brake fade. "Doc"
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- From: Dennis jr Sinks <dsinks@xxxx>
- Date: Sun, 15 Aug 2004 11:34:53 -0700 (PDT)
My car has drums on all four corners. Does that help? AMC74HORNET@xxxx wrote: I am not really up on identifying the difference in brakes but by years. Maybe someone can be more specific in identifying the kind you have by sight. I believe the 71-75 were the Kelsey Hays and 76- to at least 79 were the Bendix. The 70 and older were I believe 4 piston calipers or is it 2 ? the later Bendix & Kelsey Hays are single piston calipers. If I had the wheels off of both Hornets I could tell you. The new 74 has the stock factory Kelsey Hays and my original 74 has 79 Concord Bendix brakes. The 79 Concord 4 door sedan I parted out was a non power brake car with no proportioning valve as was my friends other 78 Concord 2 door sedan which was power but without a proportioning valve. I plumbed in a Wilwood adjustable proportioning valve before the disc brakes were added and set it in he middle for the drum brakes and didn't have to adjust the valve at all after the disc's were installed as the car stopped just fine. Oh it also has the stock drum brake power booster and master. I have investigated this drum brake swap for a few years and some people say you need the proportioning valve and some say you do not. From personal experience I have to side with the don't need it contingency. Both cars stop fine with the car with the conversion needing a little more pedal pressure to stop as it has the single diaphragm power booster where as the factory disc brake setup has a double diaphragm booster. The additional pedal pressure is not significantly noticed unless you drive the factory stock braked car and then you can tell the difference. "Doc" Yahoo! Groups Links > ATTACHMENT part 2 message/rfc822 To: BaadAssGremlins@xxxxxxxxxxxxxxx From: "deezildennis" Date: Sun, 15 Aug 2004 14:34:09 -0000 Subject: [BaadAssGremlins] Re: I need a Porportioning valve!!!!!! Got one???? > What brakes are you useing? Kelsey Hayes or Bendix. > "Doc" I donno. Is their a definet way to know for sure --0-1327348129-1092594893=:28604 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 8bit <html><body> <DIV>My car has drums on all four corners.</DIV> <DIV>Does that help?<BR><BR><B><I>AMC74HORNET@xxxx</I></B> wrote:</DIV> <BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">I am not really up on identifying the difference in brakes but by years.<BR>Maybe someone can be more specific in identifying the kind you have by<BR>sight. I believe the 71-75 were the Kelsey Hays and 76- to at least 79<BR>were the Bendix. The 70 and older were I believe 4 piston calipers or is<BR>it 2 ? the later Bendix & Kelsey Hays are single piston calipers. If I<BR>had the wheels off of both Hornets I could tell you. The new 74 has the<BR>stock factory Kelsey Hays and my original 74 has 79 Concord Bendix<BR>brakes. The 79 Concord 4 door sedan I parted out was a non power brake<BR>car with no proportioning valve as was my friends other 78 Concord 2<BR>door sedan which was power but without a proportioning valve. I plumbed<BR>in a Wilwood adjustable proportioning valve before the disc brakes were<BR>added and set it in he middle for the drum brakes and didn't have to<B R>adjust the valve at all after the disc's were installed as the car<BR>stopped just fine. Oh it also has the stock drum brake power booster and<BR>master. I have investigated this drum brake swap for a few years and<BR>some people say you need the proportioning valve and some say you do<BR>not. From personal experience I have to side with the don't need it<BR>contingency. Both cars stop fine with the car with the conversion<BR>needing a little more pedal pressure to stop as it has the single<BR>diaphragm power booster where as the factory disc brake setup has a<BR>double diaphragm booster. The additional pedal pressure is not<BR>significantly noticed unless you drive the factory stock braked car and<BR>then you can tell the difference.<BR>"Doc"<BR><BR><BR><BR>------------------------ Yahoo! Groups Sponsor --------------------~--> <BR>Yahoo! Autos. Everything you need to know about buying <BR>or selling a car. FREE Quotes, 360° Tours, Research,<BR>Blue Book, Compare Vehicles, Buy Used<BR>http://us.click.yahoo.com/kEZsdA/bwnGAA/YiGOAA/YtqqlB/TM<BR>--------------------------------------------------------------------~-> <BR><BR><BR>Yahoo! Groups Links<BR><BR><*> To visit your group on the web, go to:<BR>http://groups.yahoo.com/group/BaadAssGremlins/<BR><BR><*> To unsubscribe from this group, send an email to:<BR>BaadAssGremlins-unsubscribe@xxxxxxxxxxxxxxx<BR><BR><*> Your use of Yahoo! Groups is subject to:<BR>http://docs.yahoo.com/info/terms/<BR><BR><BR><BR>> ATTACHMENT part 2 message/rfc822 <BR>To: BaadAssGremlins@xxxxxxxxxxxxxxx<BR>From: "deezildennis" <DSINKS@xxxx><BR>Date: Sun, 15 Aug 2004 14:34:09 -0000<BR>Subject: [BaadAssGremlins] Re: I need a Porportioning valve!!!!!! Got<BR>one????<BR><BR><TT><BR>> What brakes are you useing? Kelsey Hayes or Bendix. <BR>> "Doc"<BR><BR><BR>I donno. Is their a definet way to know for sure</TT></BLOCKQUOTE> <br> </body></html> --0-1327348129-1092594893=:28604--
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