Terry/ Ken/ et-al,
I am going to fit a 200BSX/R31 rear setup on my sunny race car for a test as
a result of this.
Thats the good part about this list, there is plenty of experimentation
going on and first hand results are the best!
Thanks Guys!
Cheers
Feral Errol
mailto:[EMAIL PROTECTED]
http://www.datrats.com.au/
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Terry Rudd
Sent: Sunday, January 07, 2001 9:02 PM
To: [EMAIL PROTECTED]
Subject: RE: Brakes - Long and longer
Ken,
Very interesting read.
Some points that stand out in your post are that the performance of the big
bore Girlock callipers off the early 200B are the best option (performance,
availability and cost) for a solid rotor upgrade on a 1600. I did my brake
upgrade progressively from fairly stock everything, then fitted a 180B 3/4"
dual master and booster. There isn't a major performance increase gained as
this is more a safety and feel upgrade and was required even for club social
day laps at Wakefield Park and Fairbairne Park. I fitted Ultimate pads,
porterfield shoes with 1200 slaves which gave me brakes until half way
through lap 3 at Wakefield and then everything would go dead as in nothing
with a rock hard peddle but the brakes weren't excessively hot, well
compared to some other cars that the brakes were just about on fire. We
could never pinpoint what was wrong with mine, but as a result of fixing
another small problem recently I have just figured it out - it was the
return valving blocked in the Tokico master cylinder which was very tricky
to discover.
I then fitted the Girlock big bore callipers and rotors from a 200B SX with
Pagid pads which gave a huge increase in braking performance, without doubt
the biggest single increase of the total package. Then I converted the rears
to R31's and used Premium Bendix pads as Ultimates were not available. The
disc rear gave the braking a moderate performance increase (about 50% of the
200B fronts) but the big thing was the braking balance was brilliant which
contributes to way the car behaves under heavy braking i.e. no locking or
fading and pulls up from high speed in dead straight line lap after lap with
a very progressive feel.
I based my observations on timed laps of Wakefield Park which is a tight
little track that's suited to small cars. Over my stock setup I was able to
improve my lap times by nearly 5 seconds which is quite considerable. The
only other modification that was done in conjunction with the front upgrade
was a wheel and tyre change to accommodate the bigger brakes - this would
have contributed to some of the performance gains but no where near as much
as the brakes.
I have just changed my master cylinder from a 3/4" Tokico to a 13/16" Nabco
sourced from a Sunny. I haven't done any track runs to check if there is any
difference and I have to replace some bushings in the rear suspension before
I go onto a track as I got an "advise" last time, but first impressions are
that this cylinder is not as good as the Tokico in most areas especially
feel, but it works well but is very firm and feels a bit dead. I was
surprised that there is so much difference between brands. When I pulled the
Nabco down to check it out and clean it up inside, I noticed it has a
different built in bias (much bigger internal return springs but not as much
difference front to rear), I'd say the bias effect is ~10% rearwards
compared to the Nabco so I'm still getting used to the difference.
The next step for me would be to go to a proven ventilated front upgrade
that is guaranteed to at least equal the performance and balance of the
current setup. The options that you have investigated don't strike me as a
must have so I'll keep looking and reading for a cost effective combination
that suites the 200B strut.
regards
Terry
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Errol Smith
Sent: Sunday, 7 January 2001 7:21
To: [EMAIL PROTECTED]
Subject: RE: Brakes - Long
Ken,
Well cut my legs off and call me Shorty! That throws a different light on
the performance. What you have said makes sense to me and I have modified
the spread sheet accordingly. It would explain why Terry is so happy with
the 200B calipers performance!
Cheers
Feral Errol
mailto:[EMAIL PROTECTED]
http://www.datrats.com.au/
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]]On Behalf Of Ken Abraham
Sent: Saturday, January 06, 2001 5:23 PM
To: [EMAIL PROTECTED]
Subject: Brakes - Long
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