I guess I've put this off long enough

[Al_C]

Topic: Brake line/cable for Wilwood brakes on "old style" IRS

I've been putting this off for a while, but eventually, it has to get done. So, if you have the Wilwood brake option mounted on the old IRS, maybe you'll have some input. Maybe I'm looking in the wrong places, but I haven't seen any photos of this elsewhere. Take a look at these two photos, please:

http://thefactoryfiveforum.com/attachment.php?attachmentid=61404&d=1480293826
This one shows the flexible line and where it mounts to the frame, in additon to the e-brake cable. I was concerned about the flexible line having enough slack to handle suspension travel as well as interfering with the upper control arm. I think this is OK. Agree? Disagree? Recommendation for where it should be? How about the e-brake cable? It will always be in the same position relative to the control arm so that shouldn't be an issue. Or is it?

The second photo shows the DS with the wheel in place.

http://thefactoryfiveforum.com/attachment.php?attachmentid=61405&d=1480293828
It appears to clear the wheel in this case. Did you orient your cable differently? If so, how?

I appreciate your insights!

[CraigS]

I think you will be fine on both. For a little extra insurance on the brake hose you could wire tie it to the mounting ear on the UCA that you are not using. Look at build
threads by Carl Williams and Phileas Fogg as they have the same setup as you.

[phileas_fogg]

Hah! I was going to watch this thread to find out what worked...

[I haven't run the parking brake cables yet. Link to my build thread is http://www.ffcars.com/forums/17-factory-five-roadsters/508121-phileas_fogg-s-mk-4-roadster-build.html. Carl's build thread is EXCELLENT!]

Cheers,


John

[karlos]

I have the same setup and ran into the same problem. What you have may work, but the parking brake cables typically attach to the calipers from the bottom. To make that happen on my build I needed to exchange the rear calipers for a similar but somewhat different model*, and also wound up swapping them side-to-side.

Details contained in this thread: http://thefactoryfiveforum.com/showthread.php?20249-Wilwood-Rear-Parking-Brake-IRS-I-m-Stumped


*I'm told the calipers can be partially disassembled and put back together in a way that will make them work. For what these Wilwood brakes cost me I didn't feel like this was something I should have to mess with. So I exchanged them for ones that fit out of the box. YMMV.

[karlos]

Was under the car today, so took a couple pictures. Maybe you're beyond this now, in which case feel free to ignore...

The first photo shows the parking brake cable routing. The cable is basically vertical as it attaches to the bracket on the caliper. It then dips down slightly below the lower control arm and continues to the top of the center section like the build manual shows (second picture).

The last photo shows a somewhat better view of the flexline. Comes out of the banjo fitting in a downward direction and then routes back up to the fitting on the chassis which is 2-3 inches behind the shock mount.

I believe this is all consistent with the build manual instructions, although I admit the manual is less than crystal clear.


http://thefactoryfiveforum.com/attachment.php?attachmentid=61612&d=1480783908


http://thefactoryfiveforum.com/attachment.php?attachmentid=61617&d=1480785288


http://thefactoryfiveforum.com/attachment.php?attachmentid=61618&d=1480786208

[2bking]

My setup looks like karlos does. It has been a long time since I installed mine but I think all you have to do is switch sides with the brakes and the cable exit will change to the lower side (the caliper has two bleed ports, upper and lower). Either that or remove the brake cable bracket on the back side of the caliper and rotate it to the position you want. I thought I had pictures of all areas of my build but this is the only one I could find and its not very good but shows the cable tied to the lower control arm with the exit from the caliper from the bottom. I also had to add a spring on the cable at the caliper to get complete release of the parking brake when tension from the brake handle was removed.
61642

[carlewms]

Mine is much like Karlos as well ... I did use wire ties to attach the sheathing to the rear lower control arm.

[Al_C]

Karlos - I like your routing! To King's point - I think I will need to swap the e-brake cable brackets in order to have this orientation. As I picture this in my mind's eye, I think it will work. That would be much easier than moving the whole caliper. Question - do you have any kind of clip holding the cable to the bracket?

On a related, but not really, note, there was another thread last week about the flexible hose connection to the caliper itself. EdwardB was talking about non-banjo bolt connections to the caliper... My Wilwoods were shipped in June of 2015. I'm wondering if your calipers have banjo bolts or other connectors. I'm guessing yours are at least as old as mine, but EdwardB's might be a newer model. (I still need to look thru my bag of brake parts left over to see if I have any other connectors I didn't use...)

[edwardb]

On a related, but not really, note, there was another thread last week about the flexible hose connection to the caliper itself. EdwardB was talking about non-banjo bolt connections to the caliper... My Wilwoods were shipped in June of 2015. I'm wondering if your calipers have banjo bolts or other connectors. I'm guessing yours are at least as old as mine, but EdwardB's might be a newer model. (I still need to look thru my bag of brake parts left over to see if I have any other connectors I didn't use...)

To eliminate any confusion, the thread in question was for the newer Wilwood optional rear brakes for the new 2015 IRS. It's a 4-piston setup with 2-piece 12-inch rotors and separate e-brake calipers. Those Wilwoods use a 45 degree NPT fitting into the caliper. Other Wilwood optional rear brakes, still available (http://www.factoryfiveparts.com/12-19-rear-wilwood-brake-kit/), use a single piston setup, 12.19 inch single piece rotor/hat, and integrated e-brake. I have those on my #7750 Mk4. I believe the ones pictured previously on this thread by 2bking are the same ones. Those use a banjo type fitting for the brake line connection to the caliper.

So Wilwood uses both types of connections. Not so much when you bought them but what model they are. The best advice I can give is use the instructions that come with the Wilwood brakes. They will show the proper parts to use. Likely they will be in the Wilwood boxes, not in the regular kit boxes.

[Al_C]

Thank you, sir! (that would be you, Paul...) You clarified an item that's been bugging me all weekend. Of course, it's cold in my garage and I had to deal with things like Christmas trees, mounting snow tires and snowblowing the driveway, so I didn't get to poke around much on the car. On close inspection, it looked like Karlos' brakes showed the banjo bolts, and you've pretty much confirmed that by extension. I couldn't remember if there were multiple connectors in the brake line kit. The directions don't say much on that topic. But we're good on that now.