Rear Z06 Caliper Install - Page 4 - ZR-1 Net Registry Forums

XfireZ51 · 02-23-2014

We're heading back into the deep freeze for the next 10 days. Wednesday the HIGH will be 9F. Tuesday night it's -6F. Highs will be in low 20's going into March.
With that backdrop, decided to spend the weekend in the garage since it was 30F and sunny. Both axles are back together and torqued. Next step is assembling the calipers with the pads, mounting calipers and rotors and torquing. Meantime, I started looking at the eBrake cable setup. For some reason I recall somebody telling me C5 cables would work. Today, I tried a very rough test fit. The C5s are waaaayyyyy too long. One side will practically reach reach the other side. =Jeff= has some 87 cables that we could test fit since the 87 also had drum eBrake. Might need to shop for Lokar universals.

Dmod81 · 02-23-2014

I went straight to the universal cables and it seems to work pretty well, plus the universal kit has an adjustable nut/mount on the inner ends so you can adjust for any slack or whatnot. I left all of the stock cabling in except for the outer cables to the calipers. I had to buy a swaging tool and then grind down the swages a bit to fit in the stock receptacles. Otherwise, it was pretty easy.

Schrade · 02-23-2014

Looks good. Good snappics there...

Quote:

Originally Posted by Dmod81

I went straight to the universal cables and it seems to work pretty well, plus the universal kit has an adjustable nut/mount on the inner ends so you can adjust for any slack or whatnot. I left all of the stock cabling in except for the outer cables to the calipers. I had to buy a swaging tool and then grind down the swages a bit to fit in the stock receptacles. Otherwise, it was pretty easy.

Dom!!!

-6F??? YiKEs! 9F HIGH??? EEeEeyIKes!!!

I DON'T EVEN REMEMBER WHEN I WAS 9 !!!!!!!!!!!!!!

Global climate change is abitch yUP! BRRrrr,,,,,,,,,,,,,,,,,,,,,,,,

XfireZ51 · 02-23-2014

Do you recall the product# of the Lokar cables u used?

XfireZ51 · 02-23-2014

Quote:

Originally Posted by Schrade

Global climate change is abitch yUP! BRRrrr,,,,,,,,,,,,,,,,,,,,,,,,

It sure as hell is.

Dmod81 · 02-23-2014

Quote:

Originally Posted by XfireZ51

Do you recall the product# of the Lokar cables u used?

I'm pretty sure it was lokar ec-80fu. I also used the Wildwood/corvette clevises, lokar ec-80wc.

XfireZ51 · 03-02-2014

Quote:

Originally Posted by Dmod81

I'm pretty sure it was lokar ec-80fu. I also used the Wildwood/corvette clevises, lokar ec-80wc.

Yes, I ordered this from Amazon. The clevis' I thought were 80CC since these are
C6 eBrakes.
As I now have the rear back together, I went to put on rotor to see if I could do star gear adjustment on eBrake drum. However, I found that simply could not rotate the rotor or the half shafts for that matter. Trans is in N, and of course the calipers aren't even on at this point. I disassembled the rear again thinking I must have forgotten something and I did find that one of the shims (between the half shaft shoulder and the bearing surface) had slipped off and was lying on the hub bearing carrier in the recess. Put that all back together and torqued down, but still rotating the rotor is very difficult. With the carrier off the car and disconnected from the half shaft, the bearing spins freely. So it's the differential and trans combo not turning easily. Could it be just because it's just so damned cold?
I may start motor and put trans in gear to see if rear moves or if something is binding. I did get it to rotate with hubs disconnected albeit w some difficulty. Seemed the more I turned it the looser it got.
Putting front end on jacks next so I can replace pads on front calipers going to ceramics.

Dmod,

Was the Lokar a straight install or did you need to build some part of it?

Dmod81 · 03-02-2014

I had the same problem with the half shafts not turning. It turned out to be the abs ring contacting the knuckle. I tested by tightening the axle nut little by little until the shaft wouldn't turn. Turned out to bind by around 130 lb-ft. What I did was add an extra shim on each side to avoid the issue. I think the speed shop adapter thickness is not quite correct, or its a tolerance issue.

I think you're probably right about the clevis. Their part number descriptions are confusing to me. The clevis' that I have look like the ones pictured at the top of the page here: http://www.lokar.com/product-pgs/ebr...evis-kits.html

As for the install, I didn't have to do much. Some of the parts aren't even used. I cut the housings and cables to length, cut the springs to just slightly longer then the gap so the wouldn't rattle, and I also had to get some appropriate sized washers so that the lokar adjusters would fit where the stock outer cables terminated. And like I said before, I got a swaging tool and some aluminum ferrules to terminate the lokar cables and attach them to the rest of the stock system.

XfireZ51 · 03-02-2014

Dmod,

So u used just one additional shim of the type that is between the half shaft and hub bearing now? On each side.

Dmod81 · 03-02-2014

Yes, I have two of the shims (Teflon washers) on each side.

02-23-2014	#31
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,683	Re: Rear Z06 Caliper Install We're heading back into the deep freeze for the next 10 days. Wednesday the HIGH will be 9F. Tuesday night it's -6F. Highs will be in low 20's going into March. With that backdrop, decided to spend the weekend in the garage since it was 30F and sunny. Both axles are back together and torqued. Next step is assembling the calipers with the pads, mounting calipers and rotors and torquing. Meantime, I started looking at the eBrake cable setup. For some reason I recall somebody telling me C5 cables would work. Today, I tried a very rough test fit. The C5s are waaaayyyyy too long. One side will practically reach reach the other side. =Jeff= has some 87 cables that we could test fit since the 87 also had drum eBrake. Might need to shop for Lokar universals.

02-23-2014	#32
Dmod81 Join Date: Mar 2010 Location: Colorado Springs CO Posts: 76	Re: Rear Z06 Caliper Install I went straight to the universal cables and it seems to work pretty well, plus the universal kit has an adjustable nut/mount on the inner ends so you can adjust for any slack or whatnot. I left all of the stock cabling in except for the outer cables to the calipers. I had to buy a swaging tool and then grind down the swages a bit to fit in the stock receptacles. Otherwise, it was pretty easy.

02-23-2014	#34
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,683	Re: Rear Z06 Caliper Install Do you recall the product# of the Lokar cables u used?

03-02-2014	#38
Dmod81 Join Date: Mar 2010 Location: Colorado Springs CO Posts: 76	Re: Rear Z06 Caliper Install I had the same problem with the half shafts not turning. It turned out to be the abs ring contacting the knuckle. I tested by tightening the axle nut little by little until the shaft wouldn't turn. Turned out to bind by around 130 lb-ft. What I did was add an extra shim on each side to avoid the issue. I think the speed shop adapter thickness is not quite correct, or its a tolerance issue. I think you're probably right about the clevis. Their part number descriptions are confusing to me. The clevis' that I have look like the ones pictured at the top of the page here: http://www.lokar.com/product-pgs/ebr...evis-kits.html As for the install, I didn't have to do much. Some of the parts aren't even used. I cut the housings and cables to length, cut the springs to just slightly longer then the gap so the wouldn't rattle, and I also had to get some appropriate sized washers so that the lokar adjusters would fit where the stock outer cables terminated. And like I said before, I got a swaging tool and some aluminum ferrules to terminate the lokar cables and attach them to the rest of the stock system.

03-02-2014	#39
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,683	Re: Rear Z06 Caliper Install Dmod, So u used just one additional shim of the type that is between the half shaft and hub bearing now? On each side.

03-02-2014	#40
Dmod81 Join Date: Mar 2010 Location: Colorado Springs CO Posts: 76	Re: Rear Z06 Caliper Install Yes, I have two of the shims (Teflon washers) on each side.