Neo Internals In 33 Block

[dangerous dave]

Hi all..

Just wondering if I can use my neo pistons and rods in an r33 block with an r33 crank?? Not sure of series 1 or 2 if that helps..

My neo crankshaft has an overly flogged out keyway and my block has a crack from a water jacket to the head stud.. also has been decked twice so wouldn't bother repairing the crack and decking again..

Got the r33 bottem end free so want to make use of it if I can..

Any help would be greatly appreciated..

Cheers

[zebra]

You can..but comp ratio would be pathetic..

unless you are sticking with the neo head

[dangerous dave]

Pathetic with my neo head?

[dangerous dave]

Sorry didnt see the second line of ur reply..

So u can confirm that 34 and 33 bare block are same?

[GTSBoy]

Same enough.

[dangerous dave]

Thank you sir

[Ben C34]

Do neo head onto stock r33 bottom end with thicker gasket.

Higher comp and e85 equal winning.

[dangerous dave]

Ill pass on the e85 as its my daily..

[Blackkers]

Lots of people daily e85

[Ben C34]

I would if I could but I can't...

[dangerous dave]

Just worry if I was in the middle of nowhere and needed to fill up..how common is it on pump these days? Im still yet to see it at a srrvo

[Ben C34]

Middle of nowhere doesn't have a servo anyway.

[dangerous dave]

Then ill cut a trap door in the floor pan so I can fred flinstone it

[Ben C34]

Then ill cut a trap door in the floor pan so I can fred flinstone it

Now you're talking!

[sleptema]

Wait, the 33 and 34 heads are different. The neos are smaller cc's right? So if you put 34 pistons on, the comp ratio would be really low on a 33 head right? But you have a neo head? You just want to know if the 33 block is the same as r34 yeah?

[discopotato03]

Most people reckon the blocks and cranks are the same but the rods are RB26 , so the pistons have to have larger diameter gudgeon pins and a lower crown to get the same CR with the smaller Neo chamber . IMO minimum changes to the R33 short are rods and pistons to run the Neo head .

[GTSBoy]

Well that's exactly the combo he wanted to run.....

[dangerous dave]

Just needed confirmation. . Thanks for the advice..

[sleptema]

Sorry, but I am going to be 'that guy' here.

So if I was to forge my neo, so I can run more boost, would I need to change the crank and rods? Obviously pistons are a must, but if I balance the crank, and the rods (if they are 26) should be pretty strong ay?

[Shibbby]

I personally can't stand the idea of going through all that machining and balancing as well and new bearings etc just to skimp on rods while it's all out anyway.

But technically rods don't see the detonation stress as much as a piston would.