320i brakes in front and now..., The rears feel undersized Options

[banderson]

I did the standard conversion to 320i front calipers and removed the proportioning valve last summer and now I think that I may have increased the stopping distance. The rears don’t feel like they are working hard enough. I overhauled the system with new rotors, rear caliper rebuild kits, DOT SS lines and street pads.

Because my front brake pistons are bigger, it takes less effort to lock the front wheels than it did before. Now the front wheels lock well before the rears come close.

I havn’t heard of anyone complaining about this before and Grassroots motorsports reported that they needed an adjustable valve to keep there rears from locking. This makes me wonder if my rears are working properly. They get hot, so I know they are doing something. The pedal is solid and they don’t bind.

I am considering changing to a high performance street pad, or putting different ones on the back, but I don’t want them to grab too much.

Your thoughts?

[Brad Roberts]

What you guy's dont know is... GrassRoots is having issues with their choice of calipers in the front.. They cannot dial in the bias. If you have a Tee in place right now and they are not "locking up" << Never thought I would judge how my brakes work by "locking them up".. tighten the venting clearance like John suggested.

What I dont recommend is an adjustable prop valve. I dont understand what this will gain him ? (asking the people who said he should install one) He currently has the equivalant of a wide open prop valve with the Tee in place and he doesnt feel that the car has enough rear bias.

Oh.. do a search online for the Grassroots 914 project. They fought the brakes for several months and didnt say anything in the brake article.

Put stock calipers on it.

B