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#1 S1 Sticky front brakes
Posted: Fri Aug 21, 2015 4:56 pm
by ALAN COCHRANE
Hi Everyone
On my last long run I noticed that the car was pulling to the near side under medium braking. The car came fitted with the Coopercraft "Zeus" callipers at the front.
I found that the lower outer piston on the driver's side was stuck. This tied in with the symptoms I had experienced.
I ended up replacing all four pistons, seals and dust covers
in the calliper and at the same time fitted new braided flexible hoses to both sides.
Unfortunately the problem persists. Surely the new pistons can't have stuck as well. Thoughts please.
Cheers
Alan
#2
Posted: Fri Aug 21, 2015 5:52 pm
by 1954Etype
Pads. Try swapping them over and see if the problem moves.
#3
Posted: Sat Aug 22, 2015 3:36 pm
by ALAN COCHRANE
Angus
Go to the top of the class. With the pads swapped over the E now has a rather unnerving habit of wanting to meet the oncoming traffic head-on. So I've had a seized piston and contaminated pads simultaneously. What are the chances of that.
What would you suggest as the best replacement pads. I have the Coopercaft Zeus callipers.
Thanks Again
Alan
#4
Posted: Sat Aug 22, 2015 4:43 pm
by David Oslo
Think Angus is already top of the class :D
#5
Posted: Sat Aug 22, 2015 4:48 pm
by Heuer
I use Greenstuff pads in my Zeus calipers - work very well.
#6
Posted: Sat Aug 22, 2015 5:10 pm
by 1954Etype
Depends on driving style. If you dont drive it hard, the standard pads are fine. Greenstuff are great but can glaze if not pushed hard enough.
We have just sorted the brakes on a s2 2+2. Long pedal and no bite to the brakes at all. Everyone had had a go at bleeding the brakes to no avail. Turned out the rear outer pistons had seized and the fronts were sticking. Rebuilt calipers all round and new pads (replaced the greenstuff) and the eldetly, long term owner is delighted.
#7
Posted: Sat Aug 22, 2015 5:40 pm
by ALAN COCHRANE
I've had Greenstuff pads in the GT6 for many years and I agree they're first rate. Do I order the Greenstuff pads for the 3.8 or. 4.2 or is it another size entirely for Zeus calipers?
Cheers
Alan
#8
Posted: Sat Aug 22, 2015 6:02 pm
by Heuer
You need the ones for the S2 E-Type (larger curved. not the small rectangle used on the S1's):
http://tinyurl.com/p7cjhv2
#9
Posted: Sat Aug 22, 2015 6:54 pm
by rolando38
I'm also replacing my pads (only to realize I also had a seized piston I'm tackling), with Greenstuff
Was delighted on my oher cars (Mk2, Stag) , but I often had to grind the edges a little bit (1/10th mm) to ease them in
#10
Posted: Sun Aug 23, 2015 6:19 pm
by ALAN COCHRANE
Well Greenstuff it is. Ordered today from EDC.
Thanks for the link David.
Any idea what yellowstuff pads are like?
Cheers
Alan
#11
Posted: Sun Aug 23, 2015 8:16 pm
by Heuer
Not for a road car - too extreme!