ABS Upgrade 01
by
, 21-01-2013 at 10:37 PM (3215 Views)
Started to work on another NSX.
The service menu is to upgrade the ABS from
the original classic one and the Health Check.
This NSX is heavily modified and mainly used for track day only so
lots of nice aftermarket parts are somewhat obstructing the process.
Normally, I prefer carrying out the test driving session first before
touching anything then wash the wheel arch before starting the service.
However, with the recent snow,
I didn’t want to risk driving this precious NSX so
started removing the parts.
It has tiny racing battery and being told that
when the engine is warm,
the engine will start fine but when it’s cold,
it will require the support of big jump battery.
I noticed that the voltage reading on the dash was
only about 13V when the engine was running.
It has FI modification so the ACG is mounted using
different method and looked to be from another
model (Prelude??) so not sure whether it is spinning at
high enough speed or not at idle rpm.
Another concern was the state of cables, coolant pipes and
hoses around the battery area.
In order to install the intercooler tank at the
front compartment and also the battery cut off switch,
several parts were modified and stressed.
Poor battery GND cable at the chassis GND point....
It was sharply bent and overstretched.
Some sort of battery conditioner terminal and cable that
even the owner didn’t know.
The eyelet was nearly destroyed.
The owner is happy for me to remove it.
The battery terminal clamp was very loose on
both Posi and Neg posts.
Because they were loose, the internal wall of clamp was
already showing the patina (green like coating) resulting in
higher resistance.
The clamp itself is made from cupper and
in order to prevent the oxidation,
it is plated in silver so very important to scrape off the
patina and then apply dielectric compound to prevent
further oxidation.
As mentioned many times,
it is important not to over tighten the clamp.
It is cupper so softer than the bolt and nut.
Unfortunately, this GND cable was beyond the repair.
The nut has chewed into the clamp and even using the
washer, I don’t think it can hold the terminal properly.
I do have new GND cable but that’s already reserved
for the next NSX in the queue.
As the owner may want to install different type of
battery cut off switch, we can install the
new GND cable and the switch during the next visit.
In order to pass the intercooler hose,
the aluminium pipe for the A/C heater was
kinked/bent in the wrong direction.
They should look like below....
Notice the difference???
The proof of being used only on the track.
Very clean A/C evaporator despite the age of the car.
Already several aftermarket cables were installed and
passed into the cabin.
No idea why the cables were connected before
the fuse block.....
I hope they have their own fuse......
Just keep removing the parts.....
About to take out the original ABS unit.
More to follow later.
Kaz