Brake Pedal Resistance (Stoptech Kit)

[yip]

I've had the smaller ST40 kit on for about 4 months now and something that I notice that I never felt with the stock brakes is temporary pedal resistance.

It's not a constant and it seems to only happen when I get off the brakes and then back on them hard. I get this firm resistance feeling and the pedal won't depress. I typically notice this when braking in a straight line before coming into a turn.

Now when I feel it I let off the brakes and get back on it and the pedal depresses like normal and the pads bite but by then I've already slowed down quite a bit from when I initially started getting on the brakes.

Anyone have any ideas?

[CSG Mike]

Brake knockback? Or the brake boost re-building? (It's vacuum assisted)

[yip]

Originally Posted by CSG Mike

Or the brake boost re-building? (It's vacuum assisted)

This is what I was thinking but I thought maybe if this was the issue I would have been able to find someone posting a similar problem?

[Sleepless]

I've had the same kit for almost two seasons and have not experienced this. However, I don't find the need to get on the brakes, off and back on in rapid succession. I can't think of a reason to do that... ???

[yip]

Originally Posted by Sleepless

I've had the same kit for almost two seasons and have not experienced this. However, I don't find the need to get on the brakes, off and back on in rapid succession. I can't think of a reason to do that... ???

Say you are coming down into a turn and your on the brake heel toeing and you let off the brake as you start to turn in but some D-bag decides he is going to bomb the inside so then you have to get back on the brakes to stop from hitting him. Probably not something you experience in a professional environment but open track days it seems to be the norm especially at the cheaper events. Maybe I'm doing something wrong since I'm a novice myself.

[Sleepless]

Originally Posted by yip

Say you are coming down into a turn and your on the brake heel toeing and you let off the brake as you start to turn in but some D-bag decides he is going to bomb the inside so then you have to get back on the brakes to stop from hitting him. Probably not something you experience in a professional environment but open track days it seems to be the norm especially at the cheaper events. Maybe I'm doing something wrong since I'm a novice myself.

Ouch, yeah, I don't get that scenario with the groups I drive with; none allow dive bombing

In this scenario, it is likely you are activating ABS, and you've likely already turned in so, if you haven't used the 'pedal dance' to fully turn off the nanny's/EBD, then there is a lot going behind the scenes with the brake system that could be causing what you feel as a harder pedal. I know that some ABS systems will give you such an effect when it is trying to prevent rear lockup; Google "brake ice mode" and you'll find that a lot of brake systems have this effect.

To avoid it, try anticipating a braking dive bombs. You can usually tell and then blend in nicely behind them.

[yip]

Originally Posted by Sleepless

Ouch, yeah, I don't get that scenario with the groups I drive with; none allow dive bombing

In this scenario, it is likely you are activating ABS, and you've likely already turned in so, if you haven't used the 'pedal dance' to fully turn off the nanny's/EBD, then there is a lot going behind the scenes with the brake system that could be causing what you feel as a harder pedal. I know that some ABS systems will give you such an effect when it is trying to prevent rear lockup; Google "brake ice mode" and you'll find that a lot of brake systems have this effect.

To avoid it, try anticipating a braking dive bombs. You can usually tell and then blend in nicely behind them.

Thanks for all the great info! Much appreciated