Z20 Balance Shaft Delete Kit

This kit contains the parts required to remove the problematic and heavy balance shaft arrangement from the bottom of your Z20LET engine.

The balance shafts were fitted to try to smooth out the Z20 engine a little, but have hardly any effect other than slowing down the responsiveness and being a potential nightmare when they go wrong. They also weigh a lot and tend to froth the oil up due to their presence in the sump. Even Vauxhall did away with them in the higher performing Z20LEH (Astra VxR) engine.

This kit contains all of the parts required to remove them on the LET engine;

Full mains girdle (OEM)

Windage tray / baffle plate (OEM)

Oil pick up pipe (OEM)

High tensile 12.9 rated Cap head bolts

Grub screws for plugging old oil ways

You will need to get the oil ways in two of the mains caps drilled and tapped with an M8 thread. This is pretty easy to do if you have the tools and skills, otherwise go and see your freindly local machine shop and offer one of the lads some beers for it done. Most will gladly oblige. See the fitting instructions here to see what I mean if you haven't seen them before.

> Fitting Instructions <

Uprated High tensile Mains Bolts for Z20 Engine

This full set of high tensile steel bolts will ensure that your high power Z20's crank stays where it should be.

Come complete with instructions for fitment.

We use these in most of our Z20 builds, upto about 400hp

Colder than the standard "glow plugs" fitted by Vauxhall, ideal for fast road / track use.

Gap to around .7mm. If your ignition system can't handle this then try a new coil pack, or stop running it so rich!

Fresh pack of four.

Z20 - Cool running Thermostat - Including housing and seal

This thermostat opens at a lower temperature than standard.

The standard thermostat regulates the coolant temperature to around 90°C, with the occasional jaunt above 100°C! This is good for emissions, but not much else.

This thermostat regulates the coolant temperature to around 80-85°C, which increases detonation resistance due to decreased charge and combustion chamber temperature.

Ideally we like to re-program the fan switching temperatures too, to take in to account the lowered running temperature. This is not strictly necessary though, the fans will just work as standard.