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#11
Re: Brake Bias
Elrich11
Posted on: 2017/3/3 0:56
Quote:
Awesome Murvz, I would be keen to hear how you go with it.  
#12
Re: Brake Bias
Elrich11
Posted on: 2017/3/12 7:22
Fitted the SR20DET single piston calipers and 280mm rotors. I now have the bias under control and have much better feel and braking power. I was surprised at the improvement this change made!
#13
Re: Brake Bias
ddgonzal
Posted on: 2017/3/12 7:32
Good to know. So it seems that the R31 rear brakes are too big to go with the S13 250mm front brakes
#14
Re: Brake Bias
Elrich11
Posted on: 2017/3/12 7:34
Quote:
Yeah, at least in a ute anyway. It might work in a different body type with more weight at the back?
#15
Re: Brake Bias
Murvz
Posted on: 2017/3/27 2:34
Hey Elrich. Finally got to road test my setup. Bias seems ok even with no proportion adjustment. I have found that my peddle is really spongey now compared to the old setup. How does yours feel? I am running a brake booster also.
#16
Re: Brake Bias
Elrich11
Posted on: 2017/3/27 3:29
Quote:
Hi Murvz, my pedal feels fine. I'm running the Maddat booster and 7/8" master.
#17
Re: Brake Bias
ddgonzal
Posted on: 2017/3/27 5:37
Compared to a non-booster setup, the booster type will allows feel spongier. Even so, when the brake system is bled properly a booster type will feel fine
One simple test you can do is: With engine off, pump the brakes until the booster loses vacuum. The pedal should get higher and tighter with each pump. All sponginess should go away after four pumps or so -- which indicates the brake hydraulics are OK. If it doesn't remove all sponginess, re-bleed the brakes
#18
Re: Brake Bias
Murvz
Posted on: 2017/3/27 11:20
The pedal is quite firm without the engine running so I'm not too worried.. I may still try another bleed just to be sure. The car is pulling up fine. I think the difference is just due to the SR calipers being quite a bit larger than the bluebird calipers I previously had fitted.
#19
Re: Brake Bias
ddgonzal
Posted on: 2017/3/28 6:01
With the larger calipers it will require more pedal travel. You can shorten the pedal travel by fitting a larger diameter master (the downside is more foot pressure is required, but with a booster that's not usually a problem). Also if you have rear drum brakes, adjust them to spec as this reduces pedal travel
"Sponginess" technically refers to a mushy pedal due to air in the lines. A lot of people call increased travel "spongy" but it's actually a different thing and a different feel
#20
Re: Brake Bias
Murvz
Posted on: 2017/3/28 7:48
One of my double flares was questionable. Created a small leak and was letting air in the system. Bled it off and the pedal feels much better now. Past rego this morning so shes back on the road!!
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