Long pedal travel

[Korky]

Hi guys, just undergone a 197 brembo conversion and my pedal travel is a lot longer that it use to be, currently running a cup mc on the ph1.

I flushed the full system and used an eezibleed to bleed the brakes, reading a lot online tonight it is apparent that air can be trapped in the lower piston that can not be bled properly without a lot of chew? Has anyone had any similar issues? also bleeding the brakes I just opened the two top bleed nipples at the same time until there was new fluid running out. Should I just repeatedly bleed the brakes again and see if the pedal improves?

Any advice appreciated!

KT

 

[DrR]

2 bleed nipples?

 

[MarcB]

@Korky

I was told about the pedal travel before i done the conversion and after having SWR bleed them twice the pedal travel is still there.
Im sure @optical has the same issue as it was him that warned me about it being slightly longer.

 

[Korky]

2 bleed nipples?

Yes the brembo calipers have a bleed nipple per bank of Pistons I.e. One on the left side of the caliper one on the right.

@Korky

I was told about the pedal travel before i done the conversion and after having SWR bleed them twice the pedal travel is still there.
Im sure @optical has the same issue as it was him that warned me about it being slightly longer.

Oh right, I didn't know this, took the car out and once your use to it it's fine, it's like you can modulate the brake pressure better without stamping on the pedal

 

[Gus]

Its a bit longer travel than the standard brakes. You did the right thing with the eezibleed as it forces the fluid round better than conventional bleeding. I would drive the car for a week giving it plenty of full force braking and then after a week bleed them again. It does improve after a second bleed.

Only way of getting the pedal rock hard is a different master cylinder possibly off a 197 (havent tried it though) .
I would personally leave it as you will easily learn to like it more than a rock hard pedal, like you say it allows you to modulate pressure more.

 

[...]

Will purely be down to the master cylinder not being matched to the bore volume of the caliper
Larger volume longer pedal unless matched to the correct master cylinder . generally nothing to do with air in the system or bleeding

 

[Korky]

Does anyone know if there are there any 4 port master cylinders 23-24mm that are a standard fit?

I don't mind the pedal travel now I'm getting use to it is just like the option should I ever choose to upgrade