GZE pulleys NEW question

[Lauren]

Beware of the 'ABV mod', it is an extremely poor way of ensuring that the extra boost generated by a bigger pulley is not vented off by equalising the pressure both sides of it.

A far, far better way is to blank off the feed to the ABV from the SC outlet, that way you ensure that all boost gets to the engine.

Doing the ABV mod alone can result in some leakage.

The biggest crank pulley is 180mm, Fensport do a 176mm pulley. The HKS upgrade is a very mild one.

Also don't be misled by someone saying X pulley creates X amount of boost, because boost pressure is variable with intake charge temperature and when it gets hot you get higher boost pressures but less power. This is particularly so if you get heat soak which the Rootes type blower is renowned for. It simply is not designed to be anywhere near efficient when spun a lot faster than stock.

That said with decent intercooling you can generate good power. Power wise on an AW11 spec engine is 180bhp with a 176mm pulley. I used to have an AE92 spec engine which made 186bhp. Torque is around 180lb ft but the small port engine slaughters the earlier lower comp AW11 engine in this respect.