Disc brake conversion 67 SS - update - Impala Tech
Brakes & Suspension Conversion Questions & more

 
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post #1 of 23 (permalink) Old 08-12-2010, 09:52 AM Thread Starter
 
 
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Disc brake conversion 67 SS - update

Hi there,

In the end I took the car to my mechanic and asked him to install the MBM kit. He was not happy with this kit because he said you're better of with a kit including a new spindle and protection plate, instead of this drum-to-disc conversion kit with the plates mounted to the original spindles and no protection plate. Also he thought the quality wasn't that good?

I am curious, what are your experiences with the quality of MBM disc brake conversion kits?

Anyway, I took some pictures to keep you posted.

First after the removal of the MC and Proportioning valve it looked like this:

Question:
He told me the 'keyhole' shap of the hole is not original. Is that true?
Can maybe Landark post a picture of his firewall after the removal of the MC ?

After that he installed the new stuff. He had to drill two new holes in the firewall for the new booster mounts.

As you can see he's installing new lines to the front wheels. The plan is to use the old steel line to the back wheels. So I got an extension nipple for the old brake line to extend it to the height of the new Proportioning valve. Hopefully this works, otherwise he installs a new brake line to the back as well.
This booster plus MC fits well, unlike Landark I did not have to cut my fender.

Installing the discs was no problem:

Another picture:


At the moment he's installing the fron new brake lines. The two banjo bolts were missing, so I had to get those as well. Let's hope the bleeding goes well and we don't need to install an ADJUSTABLE proportiong valve.

The one delivered with the kit has no adjuster. What are your experiences with that?|The danger is that the rear wheels lock up before the front wheels do, but should it be possible with a standard non-adjustable proportioning valve?

Keep you posted!
Jake

Last edited by 67ImpalaSS; 08-12-2010 at 12:12 PM.
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post #2 of 23 (permalink) Old 08-12-2010, 11:37 AM
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I would have to agree with your mechanic. The kits that are avalable today are not good quality and don't offer a complete set up. I would not have changed boosters if the original was still good as the original boosters work well with disc brakes. Also I feel the rotors and calipers in these kits are undersize for a full size car. The reason for the smaller rotors is to fit 14" wheels. These companys sell hundreds if not thousands with few complaints so I guss they are what the buyer wants.

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post #3 of 23 (permalink) Old 08-12-2010, 11:40 AM
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Few weeks ago I got disc conversion kit from CPP and it also did not come with protection plates for the discs. It actually look very similar to your setup (just different color of calipers). I do have to change spindles but I will go with 65 drum spindles instead of new drop spindles as I do not want to lower the car.

Let us know how is the braking once you get her on the road.
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post #4 of 23 (permalink) Old 08-12-2010, 04:03 PM
BA.
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Nice upgrade. I'm jealous!

HOW A NOVICE REBUILDS A 66 IMPALA CONVERTIBLE:
http://www.impalas.net/forums/blog.php?u=1432
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post #5 of 23 (permalink) Old 08-14-2010, 04:08 PM
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Clean installation!

Please tell me that's not a soft copper brake line? They will fracture from forming and vibration. Copper-nickel alloys work fine for brake lines.

Tom

1965 Impala SS Tahitian Turquoise 427 4 Speed
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post #6 of 23 (permalink) Old 08-15-2010, 11:41 AM
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Good eye Tom; get rid of that front line ASAP if it is copper!!! I used stainless with AN fittings throughout mine.
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post #7 of 23 (permalink) Old 08-17-2010, 09:50 PM
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The key hole shaped hole is original. I have a 65 parts car with the same hole after I removed the master cyl.

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post #8 of 23 (permalink) Old 08-18-2010, 01:09 PM
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I also don't like these kits where the booster and the M/cylinder sit on an angle like that. It's just not an optimal set-up. Should be okay for a driver, but I would prefer a better set-up where the m/c sits flat like it's supposed to.

Q: Are the disc protection plates optional items? I can't beleive they sell the kits without them.

'63 Impala Sedan
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post #9 of 23 (permalink) Old 08-18-2010, 04:07 PM
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You can buy splash shiels to fit your brakes but I will bet that they will not be adirrect bolt on. The brakes you have are generally found on a mid eighties G-body or A-body car. And they addapt your spindles to fit the newer brakes usually.

Big Dave
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post #10 of 23 (permalink) Old 08-18-2010, 08:56 PM
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dadstory is right. The keyhole is there on mine too. At one point it had a square rubber piece that fit in there and falls out if you ever take it out and put it back and then look at it sideways.

Looks really good. I'm still trying to sort my issues out. Hopefully you will get yours perfected sooner than later.
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post #11 of 23 (permalink) Old 08-19-2010, 06:06 AM Thread Starter
 
 
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Thanks

Thanks guys for the answers. By the way the car brakes just fine! It's a good improvement since now I'm able to control how hard you brake without fading. My mechanic did advise to upgrade the brake blocks
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post #12 of 23 (permalink) Old 08-19-2010, 08:19 AM
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Brake Blocks? Not familiar with that term.

Big Dave
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post #13 of 23 (permalink) Old 08-19-2010, 08:34 AM
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I bet he means pads ,as the pads supplied in the kit are not premium pads.

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post #14 of 23 (permalink) Old 08-19-2010, 08:43 AM
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Pads can really effect the characteristics with metallic pads working great fro racing but allowing your car to creep forward at a stop when they are cold despite you standing on the brake pedal. I like the new ceramic designed pads designated as dustless. The old style original "organic" pads are still made out of asbestoses despite whatever name they use to call the carcinogenic mineral fibers that make up the pad.

Big Dave
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post #15 of 23 (permalink) Old 08-19-2010, 07:21 PM Thread Starter
 
 
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That's right I did mean pads ;-)
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post #16 of 23 (permalink) Old 08-26-2010, 11:27 PM
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Soft paddel hard paddel

Quote:
Originally Posted by 67impalass View Post
that's right i did mean pads ;-)
hi buddy do you have a soft paddel with the kits cause i have a big brake kit update and new booster and my paddel is rock hard with on vacuum any tip to what i can do to fix this cheers
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post #17 of 23 (permalink) Old 09-08-2010, 06:16 AM Thread Starter
 
 
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I'll check it out in my manual tomorrow, just got back from Spain....
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post #18 of 23 (permalink) Old 09-08-2010, 08:20 AM
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Looks good! I converted mine also...they're 100 time better than drum.

1967 Chevy Impala 4 dr hrd tp...
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post #19 of 23 (permalink) Old 09-08-2010, 08:24 AM
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Mine is in the shop. Hopefully next week I will have power disc brakes in the front :-)
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post #20 of 23 (permalink) Old 02-28-2011, 12:28 AM
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aftermarket brake kit

2 years ago i installed an aftermarket kit,,,despite many doubts of craftmanship..no problems since...brakes very well,,,, oh and i dont drive like a grandma if u know nwhat i mean,,,but i did replace the rear drums, new hardware and bended new lines except the one from front to rear.....will recomend to any one to do a disc brake conversion
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post #21 of 23 (permalink) Old 03-02-2011, 05:59 PM
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Thanks for the info! I just purchased a kit too: http://www.classicindustries.com/imp...s/a12934d.html for my 65' SS. I got a new power master cylinder with it as well. Looking forward to installing it and giving it the shake down.
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post #22 of 23 (permalink) Old 03-03-2011, 10:05 AM
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There is a original disc brake setup in the classified section. Not mine.
http://www.impalas.net/classifieds/s...ct=2405&cat=13

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post #23 of 23 (permalink) Old 09-26-2015, 05:15 PM
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update- I last posted in 2011 regarding my after market disc brakes.

i sold my 67 impala to my buddy, He now drives it as a daily. We only changed the pads and drained/refilled with new brake fluid. still brakes like a champ behind a 350/350 combo.

I think the kit sells for about $300 at the pomona swapmeet.
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