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Nismo N1 Block

ronin6

By ronin6,
in Engines & Forced Induction

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ylwgtr2 Grand Master

ylwgtr2

Posted
Posted

the only diffrences in Group A blocks (O5U)and standard older type RB26 blocks are one water jacket is enlongated....this can be done to the older block all R34 blocks have this O5U type block

*edit*Actually...it may be O9U.....i have to check my RB26 history book....its out on loan at the moment....

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GTR STI Community Regular

GTR STI

Posted
Posted

The information you've been given so far is incorrect.

There are 3 different blocks: cast into the side of the block are the letters

05U or 24U

The std. blocks tend to crack bores when you exceed 550 to 600HP.

The STANDARD BLOCK 05U is a thin wall casting, due to the larger water jackets around the bores. (comes third for desirability)

The N1 and all R34 v-spec 24U is a thick wall casting and has the smaller water jackets around the bores. (comes second for desirability)

The GROUP 'A' BLOCK 05U but is a thick wall casting and has the smaller water jackets around the bores. (comes first for desirability, but rare)

Look for a block with the smaller water jackets, near the treaded holes for the head bolts.

You can buy the N1 block from NISSAN at around $3400.

Phillip

p.s. You can also get fully sleeved blocks.....but thats another story.

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Laurence Mentor

Laurence

Posted
Posted

Just some info from http://www.pow.com.au/gtr_engine_specs.htm

Race_block_sml_blk.jpgSpecial_Race_block_sml_blk.jpg

This is an ex-Bathurst Group A heavy wall block.

When GT-R engines make big horsepower (600hp+), they have been known to split the standard block. You may be wondering why the inside of the block is white in color ?

It has been sealed with an epoxy coating so that the oil drains back fast and bits of cast iron cannot break from the inside of the motor and go into the oil system. The welsh plugs holes have been tapped, the original welsh plugs removed and replaced with screw in machined aluminium ones to prevent them from ever popping out when under pressure.

This block is a very very rare item. These heavy wall blocks are not available anymore and are irreplaceable!

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  • 3 years later...
cocopop Collaborator

cocopop

Posted
Posted
The information you've been given so far is incorrect.

There are 3 different blocks: cast into the side of the block are the letters

05U or 24U

The std. blocks tend to crack bores when you exceed 550 to 600HP.

The STANDARD BLOCK 05U is a thin wall casting, due to the larger water jackets around the bores. (comes third for desirability)

The N1 and all R34 v-spec 24U is a thick wall casting and has the smaller water jackets around the bores. (comes second for desirability)

The GROUP 'A' BLOCK 05U but is a thick wall casting and has the smaller water jackets around the bores. (comes first for desirability, but rare)

Look for a block with the smaller water jackets, near the treaded holes for the head bolts.

You can buy the N1 block from NISSAN at around $3400.

Phillip

p.s. You can also get fully sleeved blocks.....but thats another story.

hey mate ive got a n1 block

in perfect condition

ho muchcan i get rid of it for u recon

im tryin to get rid of it atm

ur saying $3400 brand new form nissan this block looks like its never been used

???

i know its a n1 block because it has 24u on the side of it..

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Blitz Grand Master

Blitz

Posted
Posted
hey mate ive got a n1 block

in perfect condition

ho muchcan i get rid of it for u recon

im tryin to get rid of it atm

ur saying $3400 brand new form nissan this block looks like its never been used

???

i know its a n1 block because it has 24u on the side of it..

You've opened 3 threads today asking the same question, stop spamming as you have already had your questions answered a number of times.

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blk180 Veteran

blk180

Posted
Posted

Man some ones going to buy the wrong block.

05U standard block

24U N1 block can be brought for $2500 from sau traders and dont think all R34 vspecs came with one.

RRR GT block best you can buy if you can find one dont go looking for change from $5000.

Brad.

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