Technical Timing the 1.2/1.4

[JayEm]

Hi,

I've got a couple of questions for anyone that's changed the cambelt on a 1.2/1.4:

1. Do you have to lock off the inlet cam? Is it safe enough to lock the exhaust cam only? Seems like a right pain having to remove bits of the inlet manifold and fuel rail just to get to the locking hole.

2. Why do you have to loosen the cam pulley when refitting the new belt?

3. Is there any kind of sealant needed for replacing the water pump?

Thanks

P.S. I'll probably have loads more questions when it comes to actually doing it, lol.

 

[Deckchair5]

. Do you have to lock off the inlet cam? Is it safe enough to lock the exhaust cam only? Seems like a right pain having to remove bits of the inlet manifold and fuel rail just to get to the locking hole.
As long as cams and crank are in EXACTLY the same place as when you started, new belt on and tensioned properly (with new tensioner too of course) then the job is done

2. Why do you have to loosen the cam pulley when refitting the new belt?
If things AREN'T exactly in the same place then that's where the proper tools and the ability to move the cam sprockets comes in

3. Is there any kind of sealant needed for replacing the water pump?
Usual Black stuff RTV 514 silicone sealant or equivilent

 

[JayEm]

I've been putting it off for a few months now but I'm finally gonna get round to doing this belt once the locking tools arrive.

Gonna go for the full belt and braces method of using the locking tools plus making a load of marks on the pulleys, however, I've got a few more questions before I get stuck in!

2. Why do you have to loosen the cam pulley when refitting the new belt?
If things AREN'T exactly in the same place then that's where the proper tools and the ability to move the cam sprockets comes in.

So does that mean loosening the pulley isn't needed? Do you have to take into account stretching of the old belt? Not having to loosen it would make the job a lot easier.

I've got a decent 1/2" socket set, trolley jack and axle stands, breaker bar, torque wrench that reads from 10-80Nm, a load of spanners, screwdrivers and a couple of hammers. Any other tools needed?

Thanks!

 

[dave]

loosening the pulley is needed, it moves when adjusting tension if its not loose the crank moves. you only need to lock the exhaust cam to do belt inlet cant move