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What Sort Of Results From Adding Cams?

Simon-S14

By Simon-S14,
in Engines & Forced Induction

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Simon-S14 Grand Master

Simon-S14

Posted
Posted

Ok heres the deal, ive got an RB25 with a mapped RB20 ecu running the show, VCT is not operational and it has never really fazed me since with the decent tune on there its got loads more down low then the old rb20 anyway. I have since added a GCG supplied GT3071R with internal gate, it has the GCG cast .71 AR rear housing (a copy of the OP6 housing if you will)

On boost, the car is an animal! goes pretty damn hard, makes 265 rwkw on 16 psi and 283 rwkw on 20 psi, since its a stock internal motor i keep the boost to 16, and i find its more then enough power anyway, BTW its a drift car.

Heres my issue, i do find that down low suffers a little, its a little laggy and i dont believe its the turbo's fault but more or less a fault of not running VCT.

I was thinking of adding some Jun spec 254 cams with 8.9mm lift. to improve the low to mid power range which is what im after, as peak power is plenty atm.

Thoughts?

Adriano Grand Master

Adriano

Posted
Posted

Sounds like a good idea. As your not running the VCT, you could either, buy two exhaust cams, or make an adjustable camwheel out of the VCT camwheel(by elongating the bolt holes that secure the outer to the inner) I would try modifying and playing with the cam timing first, maybe just a cam on the intake, dialled in on the dyno would be all thats necessary

GeeTR Grand Master

GeeTR

Posted
Posted
Sounds like a good idea. As your not running the VCT, you could either, buy two exhaust cams, or make an adjustable camwheel out of the VCT camwheel(by elongating the bolt holes that secure the outer to the inner) I would try modifying and playing with the cam timing first, maybe just a cam on the intake, dialled in on the dyno would be all thats necessary

Rezzpect man :(

paulr33 Grand Master

paulr33

Posted
Posted

keep stock cams

get VCT working with an aftermarket cam controller if you have to

tune the crap out of the low load ign timing - 7x7 should do it on the IGN map - go as far as 50deg in some spots with 100ron and youll love it

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