Vac leak on brakes?

This mite sound a silly question, but i put some wilwood 4 pots & braided lines on my R about 4 months ago now & theyve never been right?

Dont get me wrong the calipers are ok & in good working orer but the stopping power is no better than standard brakes? ive rebled them more times than ive had hot dinners & they still get no beter? Ive done a servo test where you pump & hold the pedal down with engine off & see if it sinks a little when you start he engine & all is good, also pedal dous not sink to floor which is a good thing

But i have to stamp on the pedal near enough to slow down? there only jus about adiquate for the road!

Some1 said i may have a vac leak on the servo? Would i know if i did? & how do i chek if it is a vac leak?

You can check the front by getting some fairy liquid n abit of water mix it together in a squirty spray bottle and fire away you should see bubbles around the brake handle or where the vac pipe goes in or alternative i guess would be to take the vac pipe off where it joins pump it up and see if it drops obviously your need a gauge for that

sorry to jump your thread mate, but i've got a set of wilwoods an 310mm discs as well just not fitted at the mo(due to lack of wheels), just wondering if they'll fit under 16inch rims or will i need 17's.

I think 310mm should fit under sixteens all depends on the style of the rim tbh

cheers nomad nice one, Gaz how did you get on with your comp test?

Cheers nomad ill give it a try over the wkend

toaster, Ive got a faulty comp tester, it was leaking so i need to find a good working 1 & try again

U could always try a drain tester hire them out pretty cheap as they use silicone tubes that push on to the 4"inch bungs

sounds stupid but how do you bleed your brakes ?

What do you mean in general johnny?

johnny gtir wrote:sounds stupid but how do you bleed your brakes ?

Engine on & start at left rear, right rear, left front, right front. Start futhest away from master cylinder & finish closest! Even power bled them as nomad says & still no better?

I never have the engine running while bleeding. ....

I never did untill someone said to have it running so the abs pump is on? Ive done it with & without engine on. dousnt make a difference? Peice of shit

just checking you were not miss doing something you never know.

johnny gtir wrote:just checking you were not miss doing something you never know.

And theres me thinking you was aking how to bleed brakes! Only kidding, all advise is welcome

Lol no just seen some funny ways of people doing it letting the air back in etc. Are there two bleed nipples on them ? Are the bleed nipples up or down ? My k sport rears have stickers saying make sure there the right way up or on the right sides of car

wilwoods have four bleed nipples on them so they're universal fit, and have to be bled inside top first then outside top to get all the air out according to their website.

Yup as toaster said & ive bled them prob around 10 times. Im 99% sure there is no air in the system! & ive got servo!

I had to brake quite hard tonite & noticed i could feel the servo which obv is normal then the pedal felt like it was hitting a stop & wouldnt go down any further? Thats what makes me thin a vac leak on the servo?

gaz....if you have to put excess pressure on the brakes and it appears to be a servo fault but servo is working fine then i know 100% what the prob is as weve had this on 3 seperate occasions now....its the master cylinder jamming
swap that and il guarantee you your problem will be cured

Is it a big job to change master cylinder Bob?

no not really gaz
the servo is a mare to change with engine in situ but brake master aint too bad a job

Ok well that will be a job over the winter then, tax rns out at the end of the month so ill give her some tlc over the winter