79 Bullet

I am looking to redo my brakes on the C3. Does anybody know of a shop in the Toronto area that has a on car rotor lathe?

QIK59

Will be interested to hear if there is.

All I can suggest : I usually dial indicator my brake drums and (top-hat) rotors for least amount of run-out.

Cdn UFO

The Part Source at Albion and Finch has one I had my truck drums done there. They also do rotors. Ask for Phil

79 Bullet

Actually looking for a shop that will machine the rotors while still on the car. Hence an " on car rotor lathe" This process eliminates any run out and makes the rotors true to the hub.

ezryder68

It's been a few years since I've moved from T.O., but the BRAKE SHOP on kipling and Dundas st. had one, and also at the corner of Dufferin and Dupont st. was a garage there on the north east corner that would do brakes and balance wheels on the car.

Good luck,
Mike

Cdn UFO

This must be some car I would like to see it.

QIK59

Both places - my old neck of the woods - only get down to Kipling anymore.

I'll have to check it out next week when I'm down there - just for my own future etc FYI purposes

Maymyvetteliveforevr

79 Bullet:

Sorry I'm not located in your area so I can't recommend a location.

Have you already adjusted for rotor run out? The reason I ask is that may help if not solve your problem, as well if you adjust for rotor run out before you get the rotors turned while on the car it will eliminate a lot less cutting needed on the rotor/s. If you cut too much metal the rotor may become too thin and be susceptible to warpage.

QIK59

How do you adjust for rotor run-out ?

TGstring

that dufferin/dupont garage (exact north east corner of intersection) has been closed for a long long time.

They sell chinese furniture last time I drove by.

save yourself the trip

by the way: Just wondering...

why go thru the trouble of turning your rotors when you can buy new ones at $25 each?

It'd be much quicker, easier and likely more effective putting on new rotors and being done with it.

Check out Rock Auto if you're bored... you can get new rotors all around for $100

7t2vette

Using a dial indicator and shims between the rotor and hub.

Rotor runout adjustment

QIK59

Someone makes tapered shims to do this ?

7t2vette

Yup, you can get them at NAPA, they are expensive though.

More rotor runout correction info

QIK59

Wow that's amazing !
Didn't figure someone would make something like that.

I was wondering / hoping for something like that awhile ago for my big (drum) brake project for the '59.
After I pressed the centers of the large retrofit drums I had a bit of wobble so made up my own brass and SS shims and started fawking around.

Then decided it was less Mickey Mouse to just (machine) true up the drums as there was a bit of wobble / run-out every which way (octagon shape drums LOL).

I'm just getting an adaptor machined to go on a brake lathe and precisely locate and hold them perpendicular to the lathe shaft.
When you start checking brake lathes you find they have all kinds of wobble and run-out just from the attachments fitting loose etc

7t2vette

They are handy, although last time I did this, I just used SS shim stock to make my own. I have heard of people using beer or pop cans to make shims! Whatever works I guess!

I have a Wilwood brake kit to install on my car, this time I am going to tap the hubs for some counter sunk screws like in the first link I posted, and see if that makes a difference.

briankeery

I've seen the beer can approach work quite well......with some patience and a good dial indicator as you stated. To the OP, please stay away from $25 brake rotors on a C3. The best parts available are the ones that came with the car, have seen "un-turned" rotors with well over 100,000 miles on them and still running straight and true. If they must be turned, get a good shop to clean them up, follow the runout procedures and mark the stud and corresponding rotor hole on final assembly - that way you don't have to go through this again. Good Luck, not really all that difficult with the right tools.

QIK59

Yeah I got them "pretty good" - using different thickness and lengths of shims to work my way across the hubs.
Then decided (since the drums seemed to have random high and low spots) to true them up - not wait the next 5 years for the drums to wear in round LOL.

Looking at your "mike" and the calibration sticker : you work at "the motors" or OPG ?

79 Bullet

The company that makes the shims that supplies all of North America including Napa is right here in scarborough

http://www.nucap.com/products/solutions/brake-align/

79 Bullet

You can use the shim that Bruce talks about. I think the better way is using this machine



I found a place today in Markham that has one. I am going to see them and scope them out. It looks like I will be using them. This is a great machine !!

One slight issue is these machines have difficulty with posi rear ends. So I might have to do the shim route for the back.

0Todd TCE

That's ingenious. 20yrs and never seen those. Cool.

I've got .010 and .015" round shims more for caliper centering but they can work for this also. 1" OD and .485 ID if someone needs any just pm me