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Howdy,

Thought i'd post this on noels behalf (havnt asked him but if he dont like it stiff sh!t :rolleyes:).

I'll post the pics i took tonite, if you've got questions ask away and i'll direct the old man here to answer them :P

New plenum & billet fuel rail bolted to the new head

noelsmotor002ai0.th.jpg

Inside the Inlet ports

noelsmotor003kp1.th.jpgnoelsmotor004bg8.th.jpg

Inside the Exhaust ports

noelsmotor006oz6.th.jpg

The new bottom end

noelsmotor005ry6.th.jpg

Billet fuel reg

noelsmotor001ts8.th.jpg

There's more bits to come, i'll keep this updated if noel wants.

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is that a 30 bottom end?

also who did the porting job?

Noel, how long have you had your car for? 3-4 Months? just wondering as a new engine isn't a common skyline mod in such a short period of ownership, if you know what I mean.

is that a 30 bottom end?

also who did the porting job?

Noel, how long have you had your car for? 3-4 Months? just wondering as a new engine isn't a common skyline mod in such a short period of ownership, if you know what I mean.

Its a 25 bottom end mate. crack tested rods and crank, peened, cryoed blueprinted and balanced. Forged gikens.

Porting was done by japanese motor sport in Adelaide. Combustion chambers were modified by some dude from the Adelaide tech college. Must be proud of his work as he signed his name in the head. The head flowed a pupported 920 hp on the bench.

Selecting cams for this engine is going to require some careful thought.

As for why after only 3 months. Dude its been 25 bloody years, not 3 months. I ran wild bent 8 street cars in my younger days and only gave it away to get married and do the kid thing. I bought this engine as a built concern with 4000 kays on board. Subsequent stripping of the engine has revealed all that the builder claimed. Its a gem.

I didnt particularly want to tear down my own engine as it is in absolutely top notch condition. Why destroy a perfectly good engine. It will have a new home in an r32 sometime soon.

any reason why still staying with 2.5ltr capacity? :)

Coz 3L = SHIT!

He'll have all the torque he needs with porting and careful cam selection, combined with correct turbo choice. Plus the RB25 will rev higher and more reliably.

Plus the RB25 has better technology incorporated into it's block design.

hypothetically speaking, what if he put that head on a properly built & strengthened rb30? it'd surely have to make more torque? :)

yes, but it's alot more money than following what has been proven to work to achieve similar results.

yes, but it's alot more money than following what has been proven to work to achieve similar results.

whats different betwwen either? only difference i see would be enlarging the oil galleries in the rb30 to spin it to 8k

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