Jump to content
SAU Community

Recommended Posts

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.

Link to comment
https://www.sau.com.au/forums/topic/166769-noels-new-goodbits/
Share on other sites

  • Replies 185
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Posted Images

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

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Also had a look at the Nissan JP website looks like the 400r has a slightly shorter ratio than than the regular V37 3.133 VS 2.937 which from a guy who has driven both 3.69 vs 4.11 ratios in the S15 is bugger all. Seems that the AUTO Z runs the same ratio as the 400R but can't find any info as to if its an open or LSD? More often than not the auto LSD is open
    • Do not replace the power steering lines with this stuff. If it's anything like the Chase Bays stuff it will leak and be worse than stock. The reason why the reservoir is on the LH/passenger side of the car is because that's just where the reservoir was most convenient to fit. Don't overthink this stuff. The intake/cold side of the engine is pretty busy on these cars. And again, the hardpipe is designed to be a janky power steering cooler. In theory you can replace it with a real power steering cooler but that's really only for track use where boiling the fluid is a distinct possibility. Start with the low pressure lines feeding the pump from the reservoir. Make sure there isn't a bunch of junk in the reservoir filter. Be careful to not get ATF all over the engine bay. I hate dealing with ATF spills, you can clean it up and the slightest crevice will still release more oil that can still drip over time. You also want to inspect for leaks before you make a mess and can't tell what happened. Most likely you have a leak somewhere that is allowing fluid out and air in. Failing that it's allowing air in but not fluid out. Only place I can really see that happening is on the low pressure side because the pump will pull a slight vacuum to draw fluid in. Everything after the pump is high pressure or lower pressure, approaching atmospheric by the time it returns to the reservoir.
    • I did a skidpan night at SMSP this week, it was much cheaper than $350. But yeah, you need to slap an LSD in that thing.  I put an OS Giken in the 370Z and it's f**king MARVELOUS even compared to Nissan's viscous LSD. So you're saying it's free now that it's a housing estate? 😂
    • Nah, the car seems to run exactly as it did prior, in saying this it does "seem" to be better down low, like more eager to rev, but that may be 100% placebo effect from intake noise But, I'm not worried about it at all, in the end it is a fairly low compression NA engine that has a well shrouded intake,  if it is getting hotter IAT I cannot notice anything negative performance wise from the seat of my pants thrashing it about on the street or sitting in traffic, so meh, car now now makes induction noise so I'm happy
    • Do you have an IAT sensor? It's worth checking it to see. You may be suprised how little gap you actually need to flood your engine with hot air. (I tape up my airbox for a reason) :p
×
×
  • Create New...