SOT: 930 Caliper Resto for Renegade, (thanks for your patience guys... and gal) |
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SOT: 930 Caliper Resto for Renegade, (thanks for your patience guys... and gal) |
Eric_Shea |
Aug 16 2011, 11:50 AM
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#1
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PMB Performance Group: Admin Posts: 19,278 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
Wow... talk about a difficult caliper to restore properly! And, e-x-p-e-n-s-i-v-e. $468 plus shipping for seals alone!
This was our first foray into the Brembo modular split calipers and here's where the nod to Steve at Renegade comes in. Steve said "take your time" in the beginning (which was nice) but, I think I took my time and then some on this build. It literally took months to just get the calipers apart. The steel and aluminum construction make these difficult to get apart without damaging fasteners. It all but guarantees' that the pieces will be bonded together. Those M10 fasteners aren't the only concern, the pad spring plates are held in place with some M5x.8 fasteners. Brembo must have foreseen the issue as they drilled access journals into the shaft for those screws. This allows you to spray penetrant or a freeze solution into that bore. Once the calipers were apart we had to de-anodize them and re-anodize them with the factory finish. Basically raw castings with the burs ground and trimmed anodized in black. The fasteners would normally be yellow zinc but, this customer request was chrome. I'm an original Nazi on stuff like this and would love to see a set with the proper finish because I'm "very" happy with the way the anodizing came out. Anyway... enjoy some pics. Bore seals going in: Part numbers in the casting... 930.351 for front and 352 for rear calipers. Front have 4 38mm pistons while rears have 4 30mm pistons: The small M5x.8 screws holding the pad spring plates in: Factory dust boot seals aka: wiper seals. $25.00 each (x16) (IMG:style_emoticons/default/ohmy.gif) Pistons going in. The seals slide onto the piston from the bottom and then they get pressed in using an arbor press: Everything get's bolted back together and torqued to spec: Many thanks to Steve and the gang at Renegade Hybrids for allowing me to take my time and work through these. |
eric9144 |
Aug 16 2011, 03:40 PM
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#2
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Advanced Member Group: Members Posts: 2,734 Joined: 30-March 11 From: San Diego, CA Member No.: 12,876 Region Association: Southern California |
Beautiful work, as always! (IMG:style_emoticons/default/pray.gif)
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racerbvd |
Aug 16 2011, 03:45 PM
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#3
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Advanced Member Group: Members Posts: 2,368 Joined: 3-February 03 From: Sunny FL. Member No.: 226 Region Association: None |
SWEET!!! I have a set for my GT Clone..
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Eric_Shea |
Aug 17 2011, 05:35 PM
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#4
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PMB Performance Group: Admin Posts: 19,278 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
Don't you have a set of 917 calipers?
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JRust |
Aug 17 2011, 05:40 PM
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#5
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914 Guru Group: Members Posts: 6,307 Joined: 10-January 03 From: Corvallis Oregon Member No.: 129 Region Association: Pacific Northwest |
Wow! Nice calipers. I have some of those but don't see myself paying to get those rebuilt anytime soon. Holy crapola! Just under $500 for just the seals (IMG:style_emoticons/default/headbang.gif)
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Eric_Shea |
Aug 17 2011, 05:52 PM
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#6
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PMB Performance Group: Admin Posts: 19,278 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
I'll take them and deduct it from what you owe! (IMG:style_emoticons/default/biggrin.gif)
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laflaur |
Aug 17 2011, 07:19 PM
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#7
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Member Group: Members Posts: 162 Joined: 8-June 06 From: Granite Bay Member No.: 6,186 Region Association: Northern California |
Does this mean you are ready to do 944t calipers?
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racerbvd |
Aug 17 2011, 09:27 PM
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#8
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Advanced Member Group: Members Posts: 2,368 Joined: 3-February 03 From: Sunny FL. Member No.: 226 Region Association: None |
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stewteral |
Aug 17 2011, 09:51 PM
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#9
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Old Member Group: Members Posts: 384 Joined: 4-December 07 From: Camarillo, CA Member No.: 8,424 Region Association: Southern California |
Wow... talk about a difficult caliper to restore properly! And, e-x-p-e-n-s-i-v-e. $468 plus shipping for seals alone! This was our first foray into the Brembo modular split calipers and here's where the nod to Steve at Renegade comes in. Steve said "take your time" in the beginning (which was nice) but, I think I took my time and then some on this build. It literally took months to just get the calipers apart. The steel and aluminum construction make these difficult to get apart without damaging fasteners. It all but guarantees' that the pieces will be bonded together. Those M10 fasteners aren't the only concern, the pad spring plates are held in place with some M5x.8 fasteners. Brembo must have foreseen the issue as they drilled access journals into the shaft for those screws. This allows you to spray penetrant or a freeze solution into that bore. Once the calipers were apart we had to de-anodize them and re-anodize them with the factory finish. Basically raw castings with the burs ground and trimmed anodized in black. Hi Eric, I only have a couple issues with the Renegade brake rebuild: 1) there is nothing more simple than replacing the seals on the piston in a caliper. 2) Renegade does NOTHING in-house and from the photos, I doubt that the parts were re-anodized which requires a special hard anodyzed finish. 3) From past personal experience, I don't trust ANYTHING Renegade does....too many used car salesmen around. I went with Wilwood calipers (4 piston for 1.25" rotors) at a current price of about $125 NEW! Then there are the rotors: they are 1.25" with internal vane cooling and around $44 ea. Wilwood is US made (in my little town of Camarillo, CA) and there is plenty of replacement parts and customer support in ENGLISH! They have a great choice of brake pads, also at a reasonable price. I've been running my set of Wilwood for 8 year at Willow Springs Raceway with no problems at all. You might be skeptical, as was I, about the low prices: it turns out that the 4-piston Dynalite calipers,along with the 1.25" rotors are used in the thousands, all over the US by a number of NASCAR classes and we are lucky enough to be able to take advantage of the competiion in that market. Summit Racing has them available every day. Best, Terry |
Eric_Shea |
Aug 17 2011, 10:14 PM
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#10
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PMB Performance Group: Admin Posts: 19,278 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
QUOTE Does this mean you are ready to do 944t calipers? I have a set that we've had reanodized. Again, the same price on the seal kits apply. The problem is, you can get 944 calipers for $200.00. It's almost like they're throw away calipers. The people that buy them for that generally don't see the value in sinking another $699.00 into the calipers for a proper rebuild. I think the best thing to do with those is simply soda blast them and re-clear coat them... Hopefully the seals aren't bad. They have the same pistons and those are virtually bulletproof. All you have to do is wipe them clean and reinstall them. Terry... Seems like you have an axe to grind. Please don't do it in my thread. I "personally" restored these calipers and, you're correct, installing seals is something most anyone can do. To properly restore a set of 930 calipers is not for the faint of heart or, for some of the other companies out there that I've seen "butcher" these uber-cool calipers by painting them with a polymer paint. I can only imagine the stripped fasteners and improper finish techniques, which is why I do my best to "inform" others about the needs to do this properly. That's what this thread is about. I'm familiar with the Wilwood and agree, they are a nice caliper. My caliper refinisher... The one that anodized these calipers... Anodized all of the Wilwood calipers. Regular not hard anodizing BTW. I was physically in their shop and watched the Wilwoods come out of a batch. The pistons a hard anodized and you can see the difference in the pictures above. If you have a beef with Renegade, take it up with Scott. |
jaxdream |
Aug 18 2011, 07:48 AM
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#11
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Senior Member Group: Members Posts: 974 Joined: 8-July 08 From: North Central Tennessee Member No.: 9,270 Region Association: South East States |
Dadgum , those are nice , aside from the chrome treatment .
The tool for pressing in the piston , is that special only to the 930 calipers ??? Looks neat as heck . Does it keep the piston clocked correctly for the 20* angle ?? Jack |
Eric_Shea |
Aug 18 2011, 04:27 PM
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#12
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PMB Performance Group: Admin Posts: 19,278 Joined: 3-September 03 From: Salt Lake City, UT Member No.: 1,110 Region Association: Rocky Mountains |
QUOTE The tool for pressing in the piston , is that special only to the 930 calipers ? Nada... most brake caliper repair kits have these. They're just various size plates. We use them to press in any piston that has the clip integrated into the wiper/dust seal. Most common? Late 914 front calipers (S-Calipers too). (IMG:style_emoticons/default/wink.gif) |
Cairo94507 |
Aug 19 2011, 06:33 AM
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#13
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Michael Group: Members Posts: 9,826 Joined: 1-November 08 From: Auburn, CA Member No.: 9,712 Region Association: Northern California |
Eric- Said like the true gentleman that you are.
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jaxdream |
Aug 19 2011, 07:55 AM
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#14
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Senior Member Group: Members Posts: 974 Joined: 8-July 08 From: North Central Tennessee Member No.: 9,270 Region Association: South East States |
QUOTE The tool for pressing in the piston , is that special only to the 930 calipers ? Nada... most brake caliper repair kits have these. They're just various size plates. We use them to press in any piston that has the clip integrated into the wiper/dust seal. Most common? Late 914 front calipers (S-Calipers too). (IMG:style_emoticons/default/wink.gif) Ahhh S'ss , part of the reason for my querry. Thanks Eric , as always your work is exemplary. Still think the modified 944T caliper is a good idea from the application prospective , just not the $$$$ angle, sad. Thanks again.... Jack |
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