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Series 1 And Series 2 Rb30 Blocks

NYTSKY

By NYTSKY,
in Engines & Forced Induction

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Sydneykid Grand Master

Sydneykid

Posted
Posted
Hi all,

Im picking up a series 1 RB30 block,does the series 1 have oil squirters or is it the series 2 that has them? (piston)

No RB30's that I have ever seen have block mounted oil squirters, that's Commodore RB30E, Commodore RB30ET, Nissan Skyline RB30, Series 1 or Series 2. They all have the basic 1980's style conrod oil holes.

Is the series 1 block a good block to use in a 25/30 combo?

Any good block is a good block to use.

Cheers

Gary

den001 Proficient

den001

Posted
Posted

there is another block that can be used, but it does require a fair ammount of work to the block to be able to adopt a twin cam head,its do-able and it weighs about 30ks heavier than a standard rb30 block, the cylinder walls are a shitload thicker than a conventional rb30 block and will last well over the 1000 wheel hp mark.....

this particular block comes with piston oil squiters.

2jz is in trouble now....

NYTSKY Grand Master

NYTSKY

Posted
  • Author
Posted
there is another block that can be used, but it does require a fair ammount of work to the block to be able to adopt a twin cam head,its do-able and it weighs about 30ks heavier than a standard rb30 block, the cylinder walls are a shitload thicker than a conventional rb30 block and will last well over the 1000 wheel hp mark.....

this particular block comes with piston oil squiters.

2jz is in trouble now....

And this mystery block is......?

Sydneykid Grand Master

Sydneykid

Posted
Posted
And this mystery block is......?

My guess is RD28T, 2.8 litre (2825cc) turbo-charged diesel 6-cyl, bore: 85mm, stroke: 83mm.

I looked at it about 6 years ago, there is a lot of work required to fit the RB30 crank (86 mm stroke) and conrods. Plus the cylinder head studs don't line up with an RB25/26 head. The water jacket needs modifying and the oil feed will need some external help.

Cheers

Gary

den001 Proficient

den001

Posted
Posted

thats teh 1, deisel, runs somthing like 22:1 compression. found in the nissan partol 92 models.... there is about 4 to 5 grand in block modification, there is a rear water jacket that needs to be welded up, and also 3 oil returns dont line up, need to modify the head aswell to compensate

MYRB30 Rising Star

MYRB30

Posted
Posted

Its too hard to fit oil jets to a RB30, I know of one shop that used five blocks before he found one that could take all size jets. The sand cast blocks of the RB30 was just to inconsistant with its core shift during casting for consistant fitting of the jets

VB- Veteran

VB-

Posted
Posted
alrite bud, you know everything

dont take it to heart mate, just saying, there are plenty of high powered RB30's out there, and its alot of work to get the RD28 block going with the 3 litre innards. i havent really heard of RB30 blocks letting go, bar those extreme cases of problems (tuning, oil contro, whatever), or extreme horsepower, but even with the latter there isnt an abudance of supporting evidence, not that i've seen anyway

  • 2 weeks later...
richie$$$rich Contributor

richie$$$rich

Posted
Posted

A friend of mine has a 25/30 setup.

Spec's are as follows,

STD Series 2 Block

STD rods and pistons (Motor has not been apart since god know's when)

RB25 head

STD Head ports

STD intake manifold

set of small cams

STD rb25 EX manifold

GT3540 0.86 rear

Haltech e11v2

044 pump

STD R33 box

H/D clutch

made 480HP on 20PSI pump fuel

Daily drive for the last 2 years @ 20psi

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