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Rear Rotors update (Page 1)

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Author	Topic: Rear Rotors update
Richnew41 POA Site Supporter Prowler Junkie From:Wind Gap, PA Registered: Feb 2015 Admin Use	posted 07-05-2017 12:30 PM I wanted to start this as a new thread to make sure it was seen... Today I tried to swamp out my rear rotors with the new cast iron rotors from NAPA (Part # NB 4885993) and NO GO!!!! Rotors are too small and not even close... I know fitment was confirmed by Phil but they do NOT fit my 02"... Maybe its the year, just not sure... Phil did say the other part number was a bigger rotor so I'm going to give that a shot.... Just thought I'd let everyone know before they drop the dollars... I'll update after I get the others... Thanks Rich
phil2237 POA Site Supporter Prowler Junkie From:PLACENTIA CALIFORNIA Registered: Feb 2005 Admin Use	posted 07-05-2017 03:09 PM Can you measure yours as I have 2 of them on my car now, They work fine. As far as I know, all the Prowlers have the same rotor. Is it the outside diameter or where the parking brake is ? This message has been edited by phil2237 on 07-05-2017 at 03:11 PM
alrtg POA Site Supporter Prowler Junkie From:Westminster, MD, USA Registered: Dec 2008 Admin Use	posted 07-05-2017 03:14 PM Well that kind of stinks but thanks for letting us know your experience and the part number that you had. FYI, Sometimes when a particular number is discontinued or superseded by another, or even if a vendor switches product line items can get relabeled or even re-boxed and mistakes are easily made when this happens. Did you happen to compare the other rotor to be sure it was identical? Were the rotors you bought the "Vented" style? Both the vented and non vented rotors are listed for the other vehicle applications in different circumstances but only the vented version should be compatible with our cars.
phil2237 POA Site Supporter Prowler Junkie From:PLACENTIA CALIFORNIA Registered: Feb 2005 Admin Use	posted 07-05-2017 03:18 PM The rotors I have are NOT Napa's but that number was crossed to the brand I have. I will pull a rotor off tomorrow and get the measurements as its already 90 degrees and this old man doesn't like to sweat.
phil2237 POA Site Supporter Prowler Junkie From:PLACENTIA CALIFORNIA Registered: Feb 2005 Admin Use	posted 07-05-2017 03:44 PM Now what is very strange is the rotors I have here that I bought for Gary Empfield are smaller than the ones I received the first time that I installed. I am taking the stock one back to our vender for measurements tomorrow I just talked to our supplier, He claims the ones I have fit a Volvo. I will take the new one off tomorrow & see if we can get this going. When I installed the ones I received, All I had to do was adjust the E Brake. This message has been edited by phil2237 on 07-05-2017 at 04:07 PM
Richnew41 POA Site Supporter Prowler Junkie From:Wind Gap, PA Registered: Feb 2015 Admin Use	posted 07-05-2017 06:43 PM Yes they are vented and look identical accept way smaller... The Nappa Rotor is clearly smaller than OEM on the Kat... The Nappa rotor is approx 11.25 inches in diameter and or 285.75mm... The rotor on the Kat is a bit over 12.25 inches in Dia. and or 312mm ( + or -3mm ) as my meter only goes to 300mm so I piece mealed the measurement... If you want pics I can post but these NAPA's are not even close....
phil2237 POA Site Supporter Prowler Junkie From:PLACENTIA CALIFORNIA Registered: Feb 2005 Admin Use	posted 07-05-2017 10:41 PM The pair I have are almost identical, but 1/16 smaller in diameter which is OK. The pad rides well within the surface. I am pulling one off tomorrow. This past weekend, I put about 150 miles on them, stop great. The E Brake inside diameter is 7 11/16 which is what the original rotor is. I did not get the Napa brand and am wondering if there is a difference
robin POA Site Supporter Prowler Junkie From:St Thomas Ontario Canada Registered: Nov 2013 Admin Use	posted 07-06-2017 01:17 PM I have the Napa brand and in Canada it cost 170 in total. I will try them this week to see what's up. Hope they will do a return if they don't work. Oh well keep use posted on the pair you have Phil... robin
Richnew41 POA Site Supporter Prowler Junkie From:Wind Gap, PA Registered: Feb 2015 Admin Use	posted 07-09-2017 08:26 PM Hi Phil... Without you going through a ton of trouble... Can you provide the part number for the Volvo rotor? Thanks Rich
phil2237 POA Site Supporter Prowler Junkie From:PLACENTIA CALIFORNIA Registered: Feb 2005 Admin Use	posted 07-09-2017 08:46 PM As soon as I can make sure they are safe. I have taken them off and are now having them drilled & slotted & balanced. Hard to believe a Volvo rotor fits the Prowler. I don't want members buying them if they will not be safe. I had to have the E Brake surface turned a little as to fit properly with the shoes This message has been edited by phil2237 on 07-09-2017 at 08:53 PM
robin POA Site Supporter Prowler Junkie From:St Thomas Ontario Canada Registered: Nov 2013 Admin Use	posted 07-09-2017 09:02 PM Why am I confused...why was the Napa part number provided as the replacement. Is the Volvo rotor part number from Napa or are you using a different rotor all together. I have to return these rotors soon I hope for a refund. I will attempt to install a rotor tomorrow. The Napa one that I bought. robin
robin POA Site Supporter Prowler Junkie From:St Thomas Ontario Canada Registered: Nov 2013 Admin Use	posted 07-10-2017 01:18 PM Attempted to install the Napa part# rotors no go.... Was able to return them no hassle. 4885993 robin
robin POA Site Supporter Prowler Junkie From:St Thomas Ontario Canada Registered: Nov 2013 Admin Use	posted 07-10-2017 01:25 PM This statement is now true again... The prowler has specific rear rotors. they are still available to purchase about 400 a side. not suppose to use ceramic pads. The only person that has duplicated a rotor is Bill the Parts guy. They are your every day steel rotor that can be turned if desired. You can use ceramic pads on these. (where as originals should not be turned) These are cheaper about 240 each? There are no other off the shelf rotors that fit the prowler as of yet. (proven fact) is Bill the parts guy has the only replacement steel rotor. until a proven part number with picture of and install is produced.
padroo POA Site Supporter Prowler Junkie From:Chesterton, IN, USA Registered: Dec 2010 Admin Use	posted 07-10-2017 05:46 PM Thanks for your effort robin. We can put that to rest for now.
Landscape Doctor POA Site Supporter Prowler Junkie From:Live Free Or Die State, NH Registered: Aug 2014 Admin Use	posted 07-10-2017 06:12 PM Thanks Robin for the leg work. With that said, don't mean to throw a wrench and kitchen sink in this mess but do you guys think a ROTOR AND CALIPER from another Chrysler vehicle would fit??? Just a crazy thought reading this thread.
phil2237 POA Site Supporter Prowler Junkie From:PLACENTIA CALIFORNIA Registered: Feb 2005 Admin Use	posted 07-10-2017 07:46 PM quote: Originally posted by robin: Why am I confused...why was the Napa part number provided as the replacement. Is the Volvo rotor part number from Napa or are you using a different rotor all together. I have to return these rotors soon I hope for a refund. I will attempt to install a rotor tomorrow. The Napa one that I bought. robin I have been working on a rear rotor for the last year & a half. I did not come up with the Napa number as you can see in the Tech section. I have tried many different rotors and found this one to be very close with the exception of having to turn the E Brake surface a slight bit to fit the Prowlers E Brake shoes. I have a good feeling these will work. My rotors are now being drilled & slotted & balanced and will put them back on the car when I get them back and hope these will be the answer
phil2237 POA Site Supporter Prowler Junkie From:PLACENTIA CALIFORNIA Registered: Feb 2005 Admin Use	posted 07-10-2017 07:49 PM quote: Originally posted by Landscape Doctor: Thanks Robin for the leg work. With that said, don't mean to throw a wrench and kitchen sink in this mess but do you guys think a ROTOR AND CALIPER from another Chrysler vehicle would fit??? Just a crazy thought reading this thread. No other Chrysler comes close to the measurements that the Prowler has. I have been down that road over the last year trying different ones. You can get a rotor from Chrysler that will look the same but the thickness of the new rotor is larger than the Prowler ones. For some reason , the Prowler uses a very thin rear rotor unlike other cars
Landscape Doctor POA Site Supporter Prowler Junkie From:Live Free Or Die State, NH Registered: Aug 2014 Admin Use	posted 07-10-2017 07:50 PM Hey Phil, what is the cost for the rotor, drilled, slotting, balanced and ebrake cut???
Landscape Doctor POA Site Supporter Prowler Junkie From:Live Free Or Die State, NH Registered: Aug 2014 Admin Use	posted 07-10-2017 07:52 PM quote: Originally posted by phil2237: No other Chrysler comes close to the measurements that the Prowler has. I have been down that road over the last year trying different ones. You can get a rotor from Chrysler that will look the same but the thickness of the new rotor is larger than the Prowler ones. For some reason , the Prowler uses a very thin rear rotor unlike other cars Did you try another caliper in your research?
phil2237 POA Site Supporter Prowler Junkie From:PLACENTIA CALIFORNIA Registered: Feb 2005 Admin Use	posted 07-10-2017 09:04 PM quote: Originally posted by Landscape Doctor: Hey Phil, what is the cost for the rotor, drilled, slotting, balanced and ebrake cut??? I have about 75 dollars into it Didn't want to get into changing calipers, just looking for an easy fix. Drilled & slotted cost 35 dollars per rotor. Just worried about how thin these rotors are. Even the stock ones as the more metal on the rotor, the more heat it will take. The Prowler rotors are very thin compared to most rotors. Just wondering about using a steel rotor that thin, Will it Warp very quickly ???? This message has been edited by phil2237 on 07-10-2017 at 09:08 PM
Landscape Doctor POA Site Supporter Prowler Junkie From:Live Free Or Die State, NH Registered: Aug 2014 Admin Use	posted 07-10-2017 10:23 PM I see your concern about the thin steel rotor warping and yes they are thin. My thought on another rotor and caliper was that you could use a standard thickness rotor and a caliper to accept the thicker rotor. Only issue would be if the caliper would mount to the Prowler properly. Possibly another Chrysler setup. Just a thought. You would need to remove the caliper to change the rotor anyway,,, the only issue would be the bleeding procedure. I just find it hard to believe that the Prowler was put together with other Chrysler on the shelf parts and they made a one off rear rotor and caliper. JM2C This message has been edited by Landscape Doctor on 07-10-2017 at 10:27 PM
David Veu Casovic POA Site Supporter Prowler Junkie From:PIQUA, Ohio Registered: Sep 2003 Admin Use	posted 07-10-2017 10:26 PM Raybestos, a leading aftermarket brake supplier, has issued a warning about Chinese-made brake rotors that are dangerously thinner than name-brand aftermarket and original equipment brake rotors. The lightweight rotors are being sold in various auto parts stores to unsuspecting consumers as standard replacement rotors. But the thickness of the discs in these "lightweight" rotors has been reduced by increasing the air gap between the rotor faces. This saves about 4 to 5 lbs. of cast iron per rotor, and reduces the manufacturing cost $3 to $4 per rotor. Unfortunately, this trick also reduces rotor strength (which is important to resist cracking and rotor failure), the rotor's ability to absorb and dissipate heat, and the ability to resurface the rotor safely the next time the pads need to be replaced. For more details, read this warning. For more information about the dangers of thin rotors, visit BadBrakes.net.
ed monahan POA Lifetime Site Supporter Prowler Junkie Personal ScrapBook From:Cincinnati, Oh, USA Registered: Jul 2000 Admin Use	posted 07-10-2017 10:29 PM Phil, what brand do you have?
David Veu Casovic POA Site Supporter Prowler Junkie From:PIQUA, Ohio Registered: Sep 2003 Admin Use	posted 07-10-2017 10:49 PM http://www.prowleronline.com/ubb/Forum1/HTML/018965.html
padroo POA Site Supporter Prowler Junkie From:Chesterton, IN, USA Registered: Dec 2010 Admin Use	posted 07-11-2017 06:16 AM quote: Originally posted by Landscape Doctor: I see your concern about the thin steel rotor warping and yes they are thin. My thought on another rotor and caliper was that you could use a standard thickness rotor and a caliper to accept the thicker rotor. Only issue would be if the caliper would mount to the Prowler properly. Possibly another Chrysler setup. Just a thought. You would need to remove the caliper to change the rotor anyway,,, the only issue would be the bleeding procedure. I just find it hard to believe that the Prowler was put together with other Chrysler on the shelf parts and they made a one off rear rotor and caliper. JM2C I thought I read somewhere the Prowler was kind of a testbed for new materials and construction techniques especially the use of aluminum and that included the rear rotors. They did use a lot of off the shelf parts to keep production costs down and I doubt they made a dime building the Prowler.

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