Brakes better, wasn't DFl..

[bstuke]

Prop valve went back on the front. Thorough brake bleed following Joe's exact directions resulted in a firm pedal.

I still had to screw the prop valve all the way in to get some balance.

I am going to replace the back HPS pads with HP+ to get a more aggressive and see if I can get more bite.

Wasn't last but wasn't first either, at least I am much closer to getting back on top.

Video from my 4th run:

[Cone Basher]

Nice driving, you missed a couple of those cones buy about 1 inch. I use the HP+pads on my Coupe and they do bite better, but they make a lot of brake dust and can be hard on rotors and are not recommended for street use.Some of the Auto-x guys around here also use Porterfield pads, do not know about them but a few have switched from Hawk HP+ to Porterfields. Might post a question here with specific brake info about what is recommended. Some very fast Auto-x guys hang out here. I'm not one of them but I'm trying!!
HTH
CB

[mmarshall]

CB I have competed against Bstuke...he is one of the fast ones. He just needs to get his brakes sorted.

[bstuke]

Psshh

Did find someone to do the rear brackets. Now I just need a few weeks without points. Came in third and was out over 1.5 seconds. Not good.

The challenge with screwed all the way in was not enough overall brake. I couldn't lock up anything

So HP+ on the back, as well as SS lines and SS center line. Hopefully I will get it done before Sunday..

Thanks for the feedback Mike and CB!

[bstuke]

Mike,

Take a look at this and let me know what you think of the braking pressures. This is 13" PBR and 11.65" GT.

VIR Sat 3-24-12 Race on Vimeo

[mmarshall]

Bob I believe that is reading line pressure which tells me he needs more rear caliper. That is what you just experienced. I also ran my CNC all the way rear trying to get more rear brake and the car had no brakes.

With the PBR rears you should be able to run fairly even line pressures front and rear.

[bstuke]

Ok cool. I wanted to make sure. That is a BIG difference.

So PBR's on the back even with 11.65" rotors are going to get me almost even, and then I can adjust where needed.

Now if I can just get the car to the machine shop.

BTW, the calipers Perry gave me are identical to the ones I have on the front. Same bracket and everything.

[mmarshall]

Do you have the 13" PBR setup on the front? If so then my trace of my bracket should be all the machine shop needs to cut out a bracket. I don't think there is enough difference betweeen the 12" and 11.65" rotors as long as they will fit over the hubs.

[CraigS]

The HPPlus are a significant step better than the HPS. I credit them on the rear (HPS on the front) w/ giving me a good system.Perfect balance and decent pedal effort. And that is w/ GT front calipers and Cobra rears and a CNC dual MC.

[bstuke]

Thanks Craig. HP+ on the backs now, SS lines on each end. Now I need to replace the center line with the SS line and I am good to go.

[bbk347]

I used carbotech 10s on front and 12s on the back (spec) with the valve on the front and it worked out good. Also I try to keep steady pressure on the gas and adjust my speed with left foot braking and easing on and off the gas. It keeps the car settled better then getting on and off the gas totally. It takes a little while to get used to it. Good video.

[bstuke]

Update. HP+ on the back got the prop valve on the front closer to center position than all the way in, and I was able to see difference with as little as 1 turn.

Need to finish up on SS lines, and have new rotors on the way as the current ones are not true at all.

But I improved raw from 41 to 29, so going in the right direction. Now to get the swagger and confidence back up.. Yay!

[mmarshall]

Looks faster! Nice run.

[bstuke]

I still have some clamping problems, but I am convinced the rotors are not true. I remember the PO did not line up the caliper to the pin on the pad, and they were that way a long time. I did order another set of rotors and should have that straightened out by the Super Shootout in Charlotte April 20th.

I am having a hard time finding a good break with my work and travel. I found a machinist that is actually excited about making brackets, but as you know the axles have to come out to get the old brackets off. And I might as well swap out the trac lok while I am at it..

[mmarshall]

It was not easy but I was able to cut my old brackets off without removing the axles. I already have a Torsen diff.. If you are wanting to swap the diff. anyway, now would be a good time.