1967 Porsche 911 Video 35 Complete Brake Caliper Rebuild
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- Опубликовано: 20 янв 2018
- In This Video
A detailed explanation of the process and parts needs to rebuild
your 911 or 912 brakes
Welcome to our new Super Store!
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Tips on assembly!
The correct t lubricants to use
Pictures from factory manual
Part Numbers and sizes
Some helpful techniques to help you get through this task!
#porsche #porsche911 #porscherestoration #restoration 
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Nice job
Fascinating.. amazing research for original parts and great skills and methodology ! 👍🙏
Thank you Thomas!
Excellent detail & very informative.
Thanks Larry!
Thanks so much Mike. Really appreciate the tips.
You are very welcome Andrew
It’s my pleasure
Another fantastic video! Thanks and keep inspiring!!
Thanks Rob
Im glad you enjoyed
Will keep them coming! might be slow but eventually we'll get her finished!
Nicely done as usual Mike.
Thanks John
Hope it can be of some use!
Clackmannanshire!!!! 👍🏻
Really great videos Mike. Superb work you’re doing there.
Just one note to look out for. The company that supplied the metric components from the U.K. is in Scotland, not England. It’s a bit like calling Texas California. Just in case you need to place another order!
Really super work though and very generous of you to put so much advice and information into the public domain.
Thanks Paul
Its my pleasure
Thanks for pointing that out! Yes you are right..a bit like calling Texas California
My apologies to the Scotlanders!
I should read more carefully=) Thanks for commenting!
Thanks for the video even I do not own a 911!
You're welcome Desmos
Hopefully the video can be of help someday=)
Another top video mike.
Almost done. Can’t wait
Thanks Mooney
Still aways to go but slowly getting there!
Mike Do you have a Video of Front Caliper Rebuild? is the 20 Degree Angle on Front different than the Rear? Is the Front Angle taken from the lower brake pad perch with Notch facing down? Thanks
Hey Mike - these videos are such a treat as always. I found another DIY Porsche restoration project on a channel called, kav911. The owner features a 1969 911T restoration on what he calls the Canary Files. Not sure if you’ve checked that out already, but thought you might be interested.
Don’t worry, yours is still my favorite channel. :)
Hi Derek
Thanks I’m glad you are enjoying and I always Appreciate your comments..
Yes Kaz! Great video series I recommend to to all our viewers. Kaz does some fantastic quality work and super videos! Lots of great ideas ..Restoring these old cars we need as much help as possible
Nice job Mike.
Australia uses the metric system; so if you are stuck again for any bolts / fasteners just drop me an email and I will pick it up and post for you.
Hi Brett
Awesome! Thanks..Metric here in the USA is very difficult to get..especially quality fasteners
I will keep in mind for sure!
Thanks for this fantastic video Mike! Would you mind a couple of questions? Some of the guys on Pelican forum advise against splitting the calipers - that they always leak after - would you agree/disagree? Also, I plan to media blast and powder coat my calipers - is it safe to blast inside the piston cylinder or does that need to remain polished? I have some rust. Of course, I would seal the fluid passages.
Thanks Michelle and welcome to the channel!
Yes the guys on Pelican forum are sharp and usually know their stuff..
I think what they are referring to is general maintenance for the piston seals
Better to not split them particularly the vented rotor calipers as they use a spacer shim between the two halves of the calipers.
The leaks would come from the cross over canal o ring area and
between the mating surfaces. To do the work you are interested in they will need to be completed dismantled and rebuild anyways. What happens to metal anytime you heat it up it changes the molecular structure and is susceptible to warping. When the bolts are drawn out the two halves finally relax where they want to go which could mean a slight bending of the mating surfaces.
They may need to be re-milled at a machine shop or at least checked for flatness. Sandblasting the inside of the piston cavities is okay but only very light and fine media. The groove in the rubber seal areas is what you need to be gentle with. As long as there is no pitting and the groove is sharp & clean you should be fine. Use new bolts and proper torque for extra caution.
The old bolts stretch and won't tighten as well as new ones.
Good luck and let us know how things turned out!
Thanks for this video, it's very helpful to me as I am rebuilding my '66 912 calipers. Is there any part of the caliper housing which should not be plated? I can't tell for sure if the piston cylinders were plated on yours.
My pleasure Bert.
Re-plating the calipers shouldn't be a problem. The cylinders won't plate anyways because of the shadowing effect of plating ..The water needs to be moving directly over the surface to plate well. You might get a small amount deposited but nothing to worry about. Even if the canals and cylinders were nicely plated inside the brakes would still seal and work fine.
Nothing to worry about there=)
Good luck and let us know how things turn out!
I'll link you to some pictures when I'm finished. By the way, regarding the black oxide nuts for the caliper connecting bolts: I contacted Bolt Base and they do produce these nuts, but for some reason they don't list them on Amazon. Instead they suggested I order a similar set of M6/M8 nuts thru Amazon and pass along the order #s and they can swap them out with the black oxide nuts.
Hi Mike ! First, Your videos are very good. I might have an issue im not sure how to solve. The front right brake caliper on a Porsche 912 1967 is broken and it can not be fixed. Do you know if the 911 caliper from the same period will fit on the 912 ? I see allot of the websites have mixed Messages if you can use it og cant use it. Allot easier to find a 911 caliper. Thank you for Your answer
Hi Glen
As far as I know there are two types for this year..the one you have should be the same as the 911
Non vented rotor type was used on 911 & 912 should be same size caliper
The 911S was bigger vented rotor and used a spacer on the caliper
Im no expert on the mater but feel you will be fine ordering a front right caliper for 67 911
Good Luck and please let us know the outcome!
The pistons look like new. Did you restore them or purchase replacements? Did the clear coat help preserve the yellow chromate on calipers? Really enjoyed watching this and your electroplating videos. Thanks!
Hello KL
Thank you for your positive feedback!
The pistons are original with the exception of one replacement. The gray coating is POR 15 applied after masking and lightly etching with 80 grit glass bead blasting.
The calipers do have a a clear coat on them.
High temperature brake caliper paint. I cant remember off half the brand but is a shelf item.
Great video Mike but we go through withdrawal when we have to wait a month between them.
Hi Jeff
Thanks I glad you enjoyed!
The holidays always slow me down bit ..also Work is killing me! I don't know where its all coming from
Its getting difficult to mange anymore.
In the early days of video making I would do the work and then do a follow up vid showing how it turned out
after 30 minutes I have a video! Now days actually showing how I get there takes several hours to make and edit one
Please bare with me=)
Fantastic Mike, thank you for this. How did you deal with the inside of the piston bore when media blasting and plating?
Hi Andrew
1st step is to soak the calipers in a de-rusting agent for a couple days
This is gentle and will free up the parts without any damage.
After removing pistons and old seal inspect the seal groove for pitting or damage. if heavy pitting from rust it may leak..and need to be replaced..
2nd If looks good continue to Muriatic acid dip for about ten minutes max then rinse.
3rd Gently wire brush seal groove with small wire brush SS
4th media blast caliper halves being very light with piston cavity area
Inside is okay but be very light..not to aggressive. Used glass bead is best.
Blow everything out with comprise air!
5th Electroplating with have a tough time adhering to the piston cylinder..because of shadowing effect. This is okay and will be fine.
Chromate dip won't stick to bare metal anyways must have zinc base to adhere..Not any problem though as the process will properly clean and prepare the surface for the finished seal.
Only the outside of the calipers seems to take to the zinc plating!
Good Luck!
Hi Mike, just came across your channel and I’m learning a lot. Is there a video that shows how you prepped and painted the brake pistons? Cheers
Hello John welcome to the channel
The brake pistons were masked with masking tape and the ends lightly glass bead blasted. After that blown out with compressed air and washed in with acetone Finally coated the ends with gray for 15
Good Luck!
Mike M thanks for the reply. Now I can tackle caliper rebuild and finishing with confidence 🤘🏼
Mike, thanks for the video. I’m in the process of rebuilding Carrera vented rotors (I’m going for it!). Anyway, what gray paint did you use to paint pistons?
Hello Jaques
I used gray POR 15
Lightly etched the surface prior to painting by glass bead blasting the surface first.
If you bead blast you will need to mask the entire piston with the exception of painted area before blasting
Good luck!
Thanks Mike. I’ve just plated a bunch of stuff with the Caswell system and used your method. Worked great. Thanks so much for doing these videos.
BelMetric has those M6 nuts.
Thanks for sharing Hank!
Hi Mike were these calipers sprayed or anodised? reason i ask as they look very gold like I mean literally lol?
Hello Robert
The calipers were zinc plated with Yellow chromate dip.
The iridescence and color changed after applying a clear top coat
Cheers!
Hi Mike
Great jobs you do in all your vids. Does and still do learning a lot from you for my 911. The skills you have are beyond....
Can I have the number on the Ate tool you show in this vid. I will order also one, but still hard to find.
Thanks in advance
Tom
Hello Tom Thank you
The tool is difficult to find..here is a link to the only one I managed to locate online:www.rosepassion.com/en/parts-porsche-911-classic-1969-eu-2-0s-coupe-manual-gearbox-5-speed/tools-and-special-products-493/braking-tool-1441/caliper-piston-gauge-tool-3578-0-554713
Also it is possible to make one using cardboard or some sheet metal. The angle you are looking for is 20degrees
Good Luck!
Thanks Mike. I was allready thinking to make it by myself. Is it possible to give all the dimensions of the tool. So I print it 3D at home. My email is tvanhees@telenet.be. Thanks in advance
Would it also work to powder coat the caliper a similar gold-ish color?
Hello Nicolas
Thats a great question! I honestly don't have a good answer for you on that but maybe one of our viewers has some experience there they could share
@@MikesRestorations I want to thank you, your videos are a real life saver for me, continuing a restoration that 2 previous owners left behind mostly taking things apart. Parts were not identified, a real mess..
Hello Nicholas
You're very welcome..Yes for sure taking over someone else's work can be a real challenge
Hopefully this series can help in getting things back where they should be for you.
There are many guys out there taking on projects with lots of parts and pieces missing..literally bare shells form the junk yard.
The goal here is to give as much documentation as possible from A to Z on how these cars came form the factory
Will try my best!
I am rebuilding my front right caliper for my ‘73 911, when I opens it up I found some scuff marks on the caliper and the piston, would this make them both unusable? Looks like flakes of metal inside that caused the scratches….
Hello Lyon
I would say if you could catch your fingernail on the scratch then probably it would be best to source some new ones.
If its not deep they could be lightly sandblasted and re-used. Would be a bad idea to get new pistons
Good luck!
Mike did you have all the bolts electroplated gold or are they just painted. If painted what product did you use and is it a good anti-corrosion. Thank you
Hello Tom
I try to answer your question if Im understanding correctly..
The bolts featured in this video would be new replacement blackened high grade temper for strength.
As for the remaining Bolts and hardware on the car I have re-zinc plated and yellow & blue chromated the final product for best color matching that came off the car originally.. This process
can be done up to grade 8.8 is safe. Electroplating anything grade 10 or higher will result in metal fatigue this is why they use a blackening finish or hot oil dip o seal them.
You can refer to the two videos electroplating videos in the series to see the process.
Paint also can be used for select coatings and works well in cosmetic cases
Good Luck!
@@MikesRestorations brilliant. thank you so much for the reply.. 👍👍
How much 1975 Porsche 914 need 2 rear Calipers
Hello Roberto
I would check with some of the major suppliers for those.. Also its worth checking in with Einmalig and seeing if they have anything
in good condition you could rebuild and bolt on.
Good Luck!