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Neo Rb25det Vct + Bigger Cams

JDM_Spirit

By JDM_Spirit,
in Engines & Forced Induction

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JDM_Spirit Community Regular

JDM_Spirit

Posted
Posted

Hey everyone,

Ive been making plans for abit of a big project and been scratching me head about something.

Im planning on using a Neo RB25DET head and retain the VCT.

One of the many options are to add some aftermarket cams into the package.

We have seen a S2 RB25DET on the dyno with factory Cams and VCT and by shifting the VCT's cut off point

etc, we were able to get better torque figures.

The owner then added Step 1 Cams and didnt utilise VCT and similar results were made, therefore no real

gain was made.

Now what I was wondering was, how big can I go before VCT can no longer be used nor functional?

Cheers

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https://www.sau.com.au/forums/topic/300450-neo-rb25det-vct-bigger-cams/
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KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted

Bang for buck ...more boost is the answer. get your turbo highflowed or get a GT3076 or suchlike and a decent tune ( you will need a nistune in your ecu). that will enable you to play with the vct changeover points but I doubt you will see dramatic or any improvements from that.

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