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>Junior Posted Today, 08:55 PM
I hate to burst anyone's bubble, but a beams motor running VVTi and turbo WILL produce less power then a 3s-gte. Most turbo charged motors with VVTi or any other variable valve timing (like VTEC) has their variable valve timing removed or disengaged. Variable Valve timing creates too much overlap which reduces the horse power and torque production potential. If you are going to turbo, do not waste the money on a beams. The features of a beams motor that makes it powerful will be lost after installing a turbo. You will NOT have high compression and you will NOT have VVTi.
Are you insane? Have you ever heard of a car called the Supra, or the Soarer as previously mentioned in this thread, they got MORE torque by using VVT-i. Ask any Honda guy, they love vtec with a turbo. I have never in my life met someone who said "Oh I'm going to get rid of my vtec because I'm going to turbo my car instead.". Congratulations you fail.
I can't find the other quote I wanted to use, but to answer it, there is no change-over point with VVT-i. That's all there is to it, no arguments necessary, it is constantly variable based on engine running conditions and load.
Also, to correct any and all presumptions by anybody about the purpose of VVT-i, it's main purpose and function is to replace the EGR system and get better emissions, it is not meant as a power adder but can have the effect in certain cases (i.e. Supra and Soarer). Again, no arguments needed, I have that written "in stone" by Toyota.