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Huzqld

By Huzqld,
in Forced Induction Performance

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Huzqld Enthusiast

Huzqld

Posted
Posted (edited)

Hi guys,

Just after some opinions on how these cams would go. They have confirmed 444BB Will suit NEO with vct.

My setup is

RB30, Neo head with springs and ti retainers

Forged bottom end, etc etc

Gt35

Wanting to keep the VCT for a bit more response, car is Auto and will be street/Drag

Wanting to make around 500rwhp on 98 if possible

post-78438-0-51060800-1413714779_thumb.png

Edited by Huzqld
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GTSBoy Grand Master

GTSBoy

Posted
Posted

Just make sure that the supplier is aware that Neo is not hydraulic lifter......

Apart from that, they don't seem much different from various of the Jap cams. You could use more lift and less duration, but given that it's an auto drag car what they have on there probably won't hurt.

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Blackkers Experienced

Blackkers

Posted
Posted

especially because the RB30 is basically a longer stroked RB25, lift is more important to increase than duration.

So if this car is a daily driver it might be worth looking into some lower duration/higher lift option.

however that combination is more harsh on the rest of the valvetrain and is potentially trickier to fit.

If it's just a weekender then don't worry those cams will be awesome on boost.

If you desire response over top end power the factory cams are a great option. especially in the Neo as they have a bit more lift than the 33 cams anyway.

glad to hear you're keeping VCT though

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discopotato03 Grand Master

discopotato03

Posted
Posted

IMO the whole point of having plain buckets is to allow the use of more aggressive lift ramp on the cams . The idea being beater breathing through the valve opening further rather than longer . Longer period or duration cams IMO are better suited to engines turning higher revs all the time and may not play nice even in an RB30 around town .

I think cams need to be chosen with CR in mind and the inlet manifold/throttles style too . Single throttle inlets will make longer cammed engines grumpy because of the pressure fluctuations in the common plenum chamber , not as bad with ITBs because the throttle plates tend to block the reversions .

Your call but as mentioned less duration even at the same valve lift would be easier to live with .

A .

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