Rear Brake Upgrade

[JAV360]

Finally got around to fitting r34 gtt rear brakes to the S1.

For those interested in doing this upgrade it is very simple and will only take an hour or so, providing you have tools to do the job.

We all know the rear brakes have room for improvement and if you're like most poeple and have decent set of mags, there is nothing worse than looking through those rims and seeing rusty discs and calipers covered in brake dust.

Once the two 14mm caliper slides are removed, remove the 17mm caliper bracket bolts.

Take the disc off, this may require a hit with a mallet to free up.

The handbrake shoes don't need to be adjusted as the standard stagea disc and r34 gtt disc have the same inside diameter.

Its obvious the r34 disc is bigger and when attempting to fit you will notice it hits the backing plate.

I used a angle grinder with a thin cutting disc to cut the lip off of the backing plate.

Clean up the hub before fitting the disc to prevent any possible runout causing pulsation when braking.

Fit the disc as well as the caliper, i happenend to keep the original caliper bolts from the 34 so i used them, but the stagea caliper bolts are the same it just has a different washer.

If you happen to get the brake lines with the 34 calipers it is a bonus, otherwise the stagea lines can be used but the stagea uses a banjo bolt unlike the 34 caliper which has fixed line with a flare fitting, to use the stagea line it is best to remove the flare fitting from inside of the 34 caliper.

Once it is all fiited its now time to bleed the brakes and give it a road test.

[Tangles]

sweet.

nice write up for the series one

so thats the R34 GTT rear brake and caliper, right?

[JAV360]

Yeah mate, r34 gtt rear disc and caliper.

[GreenGhost]

i have just done this as well made heaps of difference but i have an rsvrwd and the fronts dont fit not happy jan

but just the backs made it worth while

[jonny8ball]

I did the same but went for r33 GTR front and rear fitted without any mods makes a huge difference in stopping power but did need a cylinder stopper fitted!

[JAV360]

Just another thing to add, besure to get the left and right hand calipers on the right sides, otherwise you may find it hard to bleed up correctly.

The bleed nipple can tell you which side is which by having the nipple at the highest point rather than at the bottom.

Air rises (who would've thought?) so it won't bleed out if the nipple isn't up the top.

[JAV360]

found the thread some guys were after.