I have been doing some small research after noticing the performance specs differences on the following 4.0 L Toyota models below as i was trying to understand why some are rated at 230hp while others were showing 260-270 hp in their datasheets.
- Toyota Prado / Landcruiser: Single VVT-i till 2009, Dual VVT-i was implemented on the new model of 2010 onwards.
- Toyota FJ Cruiser: Single VVT-i till 2009, Dual VVT-i was implemented on the new model of 2010 onwards.
- Toyota Hilux 4.0 (Adventure Series): No 4.0 model available until 2021, until Adventure Series came with 4.0 V6 Single VVT-i
- Toyota Fortuner: Single VVT-i only.
I noticed prior to 2010, the FJ cruiser had a Single VVT-i setup, (variable valve technology on the intake only), while from 2010 onwards the FJ received Dual VVT-i technology (variable valve technology on exhaust side as well). This update resulted in about 21hp more power, but on the other hand, the max power is sitting on a higher rpm and the torque is a bit less.
To my surprise i have noticed the current 4.0 Fortuner and Hilux Adventure models are still showing the single VVT-i specs, which makes me suspect they are doing this to keep the production cost down.
Adding to the confusion, the Landcruiser 70 Series 4.0 V6 even has lower output. 228 HP / 360 Nm.
Of course in real life situations and performing in the desert we need to look at many other things, but i wanted to put this article here to get a better understanding on the differences and to advice if you are planning to buy an FJ secondhand, it would make sense to go for the 2010 model and upwards.
1GR-FE_Engine[1].pdf