VE - Brake pedal travel

[Rad Kane]

Hi,

Was wondering if someone can assist me with advice as how to reduce the long travel in the brake pedal I have in my SSV.

Have 'Harrops' brake upgrade with quality braided lines, correctly bled (pumping does not bring the pedal up), but, the travel is fairly long.

[gmh308]

What do Harrop have to say?

Does this upgrade include a master cylinder upgrade as well?

[Rad Kane]

What do Harrop have to say?
A) Have not spoken with Harrops regards this topic

Does this upgrade include a master cylinder upgrade as well?
A) No master cylinder uprgade.

[gmh308]

Check with Harrop or their reseller. Would expect that their calipers run the same brake fluid volume requirements as regular calipers, but maybe not and the result is a slightly longer stroker on the master cylinder and pedal.

[Rad Kane]

Hi,

Thanks for your suggestion, but, once a caliper is filled with oil and the air is bled than its filled, thus minimal pedal travel will 'top' it up.

I'm wondering if the master cylinder/power booster may be the cause.

[planetdavo]

Is the travel actually longer than normal Holden???
Your post doesn't really clarify whether it's now longer than with regular brakes, or you just want to make it shorter than it's actually designed to be like.
If it's gone longer there are really only two options (be massively surprised if it's a sudden booster issue). First being it's not bled as well as you think, and second one is that Harrop's design uses more fluid, hence requires more travel to do the job (as others have suggested).

[Rad Kane]

Thanks for that. Thats a bit of a learning curve for me re larger calipers requiring greater travel?

Re travel in standard system: Checked my firends VE GTS and mine certainly travels further by at least 30mm.

Re bleeding: Quite confident that has been done correctly. Definititely sharp pumping does not harden nor reduce the travel in the pedal.

Never the less, just thought someone else might have had a similar situation.

[gmh308]

Larger calipers "may" require greater travel. i.e. if the caliper pistons have a greater displacement to effect the same amount of braking then the master cylinder will need additional travel. (or a larger diameter master cylinder or different pedal to MC ratio.)

Best to check Harrop and see what they say is normal.

[stockergts]

wife cars has the same thing with std brakes i found the mc/booster not set correctly from the factory adjusted it and it is now good

[Rad Kane]

wife cars has the same thing with std brakes i found the mc/booster not set correctly from the factory adjusted it and it is now good

Hi,

Can you please let me know what type of adjustment that was actually made.

[stockergts]

you might have adjustment on both the pedal side and mc side just try the pedal side first thats what was done to hers just to take out the sloppy travel at the top

[Rad Kane]

you might have adjustment on both the pedal side and mc side just try the pedal side first thats what was done to hers just to take out the sloppy travel at the top

Hi,

Thanks a lot.

Will definitely give this a go.

Cheers.:goodjob:

[Blakrok]

Picture of the adjuster?

[Sonnymad]

If you have bled the brakes correctly and the air is 100% out,theres only one issue and its none mentioned in this thread ..


A- Incorrect installation

B - incorrect installation

C - incorrect installation


- Before anyone says anything,i have installed shit load of these and rectified "incorrect installations" it seems as simple job,but some just dont learn the basics..:)

[Rad Kane]

Hi Sonny,

Can you please enlighten on the basic secrets of the installation side your referring to here.

It really be interesting what your guiudence be.

Thanks in advance.

[Sonnymad]

Hi Sonny,

Can you please enlighten on the basic secrets of the installation side your referring to here.

It really be interesting what your guiudence be.

Thanks in advance.

Why hello there ;)


There is no secret,thats why its called basics,go back to the installer let him work on the basics and it will all be fine trust me :).I have a saying which i emphaisze to my staff all the time..

" If you dont understand how the item you are fitting works,you can only fit it,you cant diagnose or fix it"

[Arnie@Harrop]

The #1 issue in most cases is Air in the system, the VE I had prior to my current XR8 (see motor Oct issue Hot Tuner Shot-out) was very temperamental on bleeding
Also we found that the firewall flexes considerably, we made up a support brace that assisted in curing the long pedal concern, please PM me for a print of the brace
Regards

[Rad Kane]

Hi Arnie,

Sincerely appreciate constuctive response that has a positive outcome.

Have just sent you a PM.

Sincere thanks,