Hello I'm Piston Kirk!
Changing a timing belt is always a delicate operation
because if you make a mistake in setting pulleys during reassembly,
you may damage the engine.
Fortunately, the Boxster 986 is not equipped with a rubber timing belt
but a metal chain that wears less quickly
and most importantly, that does not become brittle with time
so in theory, no need to bother to change it.
Great, no belt to change,
end of the video!
Well no ! It would have been too easy ....
On this engine, there is another belt
which is rubber.
It serves for the accessories,
which are :
the air conditioning compressor,
the power steering,
the water pump,
and the alternator.
so if it tears
you will have to ride on the battery
and your engine will overheat
before you have time to reach the nearest garage.
so do not forget to replace it.
the replacement of the belt should normally be done every 80,000 km (50 000 miles) or every 10 years
because as the rubber dries and cracks over time,
the belt may break.
Fortunately, if it happens, it will not damage the engine,
because as we have just seen,
it is not related to the synchronization between valves and pistons
and it is for this reason that there is no need to wedge the pulleys.
A beginner can replace this belt
without any risk for the mechanics.
Now you are reassured, we can start.
The panel that allows us to access the belt is behind the seats.
It is covered with a carpet, held by four screws.
but to access these four screws,
you will first have to push back the storage box.
located above the engine block.
To facilitate the handling of the storage box,
we will remove the windproof window
located between the two arches of the roll bar.
To start we will open the roof to access the glass.
Then with one hand, lift the lever
while pushing with the other hand toward the back of the car
as soon as the first stud is out,
the other come easly.
Now close the roof.
To have room to work,
tilt both seats and move them as far as possible.
To unscrew the storage box,
the procedure is not the same depending on the year of your Boxster.
From 1996 to 1999
there was a storage box in soft leather.
The two side screws are located inside the box.
And then you must not forget to remove the central clip
located between the two arches of the roll bar
If your model was produced between 2000 and 2004,
You then have a rigid storage box
which does not have a central clip just two side screws
accessible from the top.
Once all the clips are removed,
You can push back the storage box
to lift the carpet and see the four screws that hold the carpet upright.
You will not need tools to unscrew them,
they are easily removed by hand.
Once it's done,
lift the carpet over the threaded rods.
Then pull it upwards to dislodge it.
Metal panel that protects access to the belt
and maintained by nine nuts.
There is no particular difficulty to remove them,
but sometimes this metal panel adheres to the chassis,
you must then force a little to take it off.
Before removing the belt,
take the time to observe it
and take pictures with your mobile phone
to be able to look at them easily when reassembling
Once the observation phase is over,
Take a socket wrench of 24
and insert it into the tensioner pulley.
Rotate clockwise,
what will lower the pulley
and free the belt
Remove the belt is very easy operation
but extremely messy
So be careful of your interior,
especially if it is clear.
Here is the replacement belt,
it can be found very easily on the internet
for a price ranging from 20 to 40 euros.
But be careful when you order it
because its length is not the same if you have a 2.5L, 2.7L or 3.2L engine
You must take into account the presence or absence of air conditioning
because there is a compressor.
Most Boxster have air conditioning,
but if your car does not have one,
the belt will then be shorter.
Since there are 6 different belt sizes for the Boxster 986,
as a precaution, we will check that the belt we have just removed
has the same length as the replacement belt.
As we can see, the size is the right one,
we can install it.
Put back this belt is not very intuitive.
Start by passing the belt through all the pulleys
except the tensioning pulley and the guide pulley at the bottom left.
Then with the socket wrench push the tensioner pulley closer,
Pass the belt
and put the idler pulley back in place.
Now, before reassemble,
you must test it.
As we can see, it works,
now we can put the cover back.
Eventually, it's a very easy operation
who just asks you to be attentive during disassembly
So don't hesitate to replace it
because it will give you the opportunity to discover your engine from a new angle.
See you next time!
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