Bottom pulley change... retension required?

[ashley_t]

Looking at changing my bottom pulley to a lightweight one

If i put the locking tools in and removed just the bottom pulley, am i likely to need to retension the belt?

 

[MicKPM]

Officially, you should yes but if you pin the crank and cams with the proper tool and don't touch anything else, you should get away with it.

Fit a new crank pulley bolt!

 

[ashley_t]

Thanks mate

Another question... when locking the engine... is it cylinder 1 that needs to be at tdc? I believe this is nearest the gearbox?

 

[MicKPM]

Cylinder 1/4 will be in the same position so either of the outer two will be fine. For reference though, cylinder 1 is flywheel end and cylinder 4 is timing belt.

 

[ashley_t]

:smile: Ah thats ok then. Timed engine up out the car.. Not run it yet.

Then read that no1 was flywheel end... i'd used 4

Had a sweat on lol

 

[MicKPM]

Nah, it makes no real difference as they'll both be at TDC and it's the same with the ignition side of things to in that you can mix up 1/4 & 2/3 without it causing any problems.