GA16DE and variable valve timing

it has variable timing on the intake camshaft. that's why there is that lump on your valve cover on the left hand side.

200'side said:

There is something definitely feelable passing 6 grand. I dont know too much about internals (and I might get ridiculed for this) but I always thought it was the second cam kicking in or something. But its the Variable valve timing adjusting the intake cam? Ok.

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W/ VTC you don't have the variable lift as w/ VTEC. (VVL has it tho). It adjusts the phase of the timing. Isn't the newer systems called CVTC? Well BMW and Ford also use this type of system... I think Toyota does too w/ their VVT-i and Hondas new VTEC systems also incorporate this technology...

BMW has it on both intake and exhaust cam shafts and they've been able to do away w/ the throttle body. ford only has it on their exhaust shaft for better emissions.

yep Double VANOS is what BMW calls it.

it's done through their valves tho, i don't know the details but the cams are on a little ramp and i think the entire camshaft moves so the lift changes depending on where on the ramp they sit...

barnoun said:

You mean for the valvetronic right? I think that is how it works.

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yeah that's the one. it's pretty ingenious.

Teknokid said:

So does my my 96 GXE have this VTC that you guys speak of?? How is it that it is VTC but it means Variable Cam Timing

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Variable Timing Camshaft... yeah you have it on your 96.

good info, thanks!