Preparation tips-
NB –these notes are general guidance
only –always refer to manufactures data
If unsure about anything seek the advice of a
professional motor engineer
The club forum is a vital source of guidance
–don’t be afraid to ask!
All though cars may have current MOTs and have been recently
tested prior to an event, it doesn’t necessarily mean they are fit and
safe for a 2,000 mile non-stop drive,possibilly pushing the car to its design
limits within the event –i.e. fully loaded with fuel, passengers and tools
taking on twisty undulating roads with long stretches of higher speed dual
carriage/motorway, these combinations will accelerate wear on components in
good condition and find the weak links in any worn components.
When these components are safety critical a massive mechanical
failure could have serious safety implications for the passengers and other
roads user.
One failure tends to lead to another as the original failure
can put massive strain on another component without you being fully aware-so
it’s important to understand the consequences of ignoring what might seem a
trivial fault
Don’t forget all our cars are at least knocking on the door
of being 40 years old!
Safety critical systems/items-these
items should be stripped down inspected at regular intervals – I would suggest
in the months running up to a big event -
Suspension-strip, inspect-replace worn or failed components
with proven quality items-don’t take it as read that if it” looks new” it’s “ok”-check
TOP
TIPs- the more you take your car to
bits and put it back together the more you will learn about it .This will build
confidence in its, and your ability
Always use new nylocs where fitted
when re-assembling
Replace spring washers as you go
Unsure how old a critical bolt is?
Replace it
|
Trunions, trunion bushes,
pivot bolt-it is very important to understand how these items work and
interact with each other,the trunion should rotate with the bolt the bolt
must not rotate in the truinon this will cause very quick wear of the trunion
–if in doubt study the exploded drawings in your manual or ask one of the old
hands-“no question is a daft question”
Suspension
uprights-there should be no rust or
pitting at all on the section that screws into the trunion look for cracks
and missing grease nipples/dust covers -do a Google search this will bring up
lots of pictures of what they should /shouldn’t look like and what happens
when they fail!
Ball
joints – use quality components
–ones that have an external grease nipple are a good bet- grease seals/boots
should be intact and wire locked in position –check for “play” again ask if
in doubt
Dampers- check for leaks, damage or cracks to mounting
points bushes should be intact –i.e. not twisted, squashed, or breaking up
–do not over tighten damper mounting points refer to the manual- check torque
settings
Springs- is it the right way up?! Is it the same length as
the one on the other side? Look for cracks, is it seated in spring platform
correctly-should it have spring insulator type pad?
Struts-Top mounts check for cracks/play –check the spring
as above
Links/drag
struts etc- bushes should be intact
–i.e. not twisted, over squashed, or
breaking up
|
Hubs/bearings
|
Checks for play in hub bearing- refer
to workshop manual for correct procedure-do not over tighten taper bearings!
If the car has been standing a while
consider stripping and re-packing with high quality suitable grease-if
bearing age is un-known consider replacing with the very best quality bearing
you can afford-if in doubt ask the club
Check bearing carrier/hub recess where
the bearing fits for signs of overheating, scoring, “spun” bearing tell tails
etc–does the new bearing fit correctly?
Replace felt seals etc
|
Braking
|
Inspect drums/discs for excessive wear
– minimum thickness will be listed in manual or if in doubt ask the club
Callipers/slave cylinders- inspect for
fluid leaks-if the car has been standing even for only a few months check the
pistons are free and there is no binding in operation
Check friction materials(pad and
shoes) make sure they are clean and haven’t been contaminated with fluid
check- there is a enough material thickness for the planned trip
Check tightness of calliper bolts-
torque settings in manual
Manually adjust drum brakes-self
adjusters generally don’t work!
Check flexible brake lines-do you know
how old they are? look for cracks in the rubber walls
If you have replaced standard flexi
pipes with braided lines have you used the correct washer between fitting and
slave/calliper?
Master cylinder check reservoir is
clean and cap fits correctly
Bleed system –is pedal firm?
How old is the fluid? –replace every
two years
Servo –check condition of vacuum pipework
Road test after maintenance- bed in
new friction materials
Monitor fluid levels
|
Steering
|
Track rod ends- check for play, rubber
covers intact?
Steering rack –check for excessive
play in inner ball joints, and back lash between rack and pinion
Slide back rubber gaiters expose rack
inspect, re-pack with grease replace gaiters if split etc
Linkage check for play in U/Js
Check for play in column –replace
bushes as required
–is wheel stiff to rotate with weight off
the front wheels? Investigate –ask the club if in any doubt…could be a
Trunion fault so important to understand how all these components interact
with each other
Rack mounts- are they solid or rubber bushed?
Check for cracks ,loose or deformed mounting rubbers – replace as required
Is the rack centralised?
|
WHEELS
/ TYRES
|
How old are the tyres? Check for
cracks in side walls bulging
Are they correct size for wheel? Do
they foul the arch/body work?
Are the wheels original? Are the wheel
studs/nuts suitable?
Fit the very best tires you can afford
–go for an A or B wet rating
Get all four wheels balanced before a
long trip
|
Fuel
System
|
Replace all old rubber fuel lines with
modern materials that are suitable with modern fuels-if in doubt ASK the club
Replace all fuel line hose clip
connectors every couple of years
Consider fitting modern electric fuel
pump-reproduction mechanical pumps can be of very poor quality-always fit a
cut out switch to electrical pump
Service carbs-replace float gaskets,
jet o rings etc –anything that can cause a fuel leak onto a hot component!
|
|
CARRY
A FIRE EXTINQUISHER-min size 2l AFF
|
|
|
Reliability-
Now you’re
are happy the car is safe- steers where you want it, doesn’t bounce off the
road once over 50 mph and stops safely from motorway speeds you want to make
sure it can do all the above over a long weekend and a couple of thousand miles
without having to stop and bolt things back on it.
Cooling
system
|
Check hoses + hose clips consider
silicon hoses when replacing old rubber.
Radiator-when was it last back
flushed? Don’t know ?back flush it! be prepared to do it a few times after
several heat cool cycles if the car has been standing a long time –don’t
forget to back flush the engine block and heater matrix
Is the engine up rated? Consider an up
rated radiator
Replace the thermostat for a known
good spare –test it in bowl of water measure the temperature it opens.
Water pump- has it sat a long time
with old coolant in? If it has it will fail in the next few hundred miles!
Carry a spare
Heater control valve test for leaks in
all positions-replace if needed try and get a NOS unit or service kit-they
can be little buggers!
Viscous fan? Check for play how old is
it? consider replacing –they can come off and destroy the radiator- consider
fixed blade for reliability or electric fan
Wire in switched direct feed to
cooling fan to override faulty sensors/controllers- use cable and switch gear
that can handle the current load of the fan –make sure the fuse rating is
lower than that of the cable-if in doubt ask- this sort of mod is common place in endurance
rallying.
|
Engine
-general
|
Oil leaks..Always get worse! Replace
rocker cover gaskets, seals etc that are showing signs of leakage
Carry out a standard service at least
a month prior to event –you may well
find more faults during the service
Check condition of engine mounts, make
sure they haven’t “sagged” causing extra strain on gearbox mounts etc – replace with the best quality units you
can get –ask the club
|
Charging
circuit
|
If you have fitted extra electrical
ancillaries such has up rated headlights etc consider up rating alternator
Replace fan/alternator belt carry
spare- use known good quality components
|
Gearbox,
differential
Drive
shafts, prop shafts
|
Replace fluids – use correct “GL”
grade- check in manual or ask club
Inspect U/Js replace any that are
suspect –use known good quality units.
Consider prop shaft balance post U/J
replacement- gets rid of vibration which can work other items loose as well
as your teeth.
Check operation of overdrive circuit-
switches, connectors earths.
Check condition of gearbox
mounts-replace any that have been soaked in oil for years …after you fix the
oil leak…
|
Electrical
-general
|
Replace any suspect wiring.
Waterproof prone/ignition critical
connectors.
Wiper motors- strip clean grease,
along with wiper boxes and cable hidden under the dash
|
Ignition
circuit
|
Fit electronic ignition – modern
points are rubbish.
Carry NOS points and condenser as
spares
Replace plugs and suspect HT
leads-carry spares
Fit NOS rotor arms/Dizzy caps
Check operation of dizzy –advance
retard working? Timing jumping about? check with strobe
|
Exhaust
|
Replace suspect manifold/downpipe
gaskets
Replace all rubber hangers – then
loosely wire using heavy duty wire capable of “catching” the exhaust if the
hanger snaps
Don’t be tempted to buy shiny looking
after market twin pipe exhausts etc – the route for the original system will
fit better and give you far better ground clearance –use a bespoke free
flowing back box that will fit in the space provided –ask the club lots of
places will make you a one off
|
|
|
No comments:
Post a Comment