Rb25det or Rb25det NEO

[CarNoob]

So I’m looking to get my r33 gts series 2 to 350-400hp and I don’t know which engine  to get. I have the money just not the knowledge. I’ve read countless reviews from 2000s of a 25 vs NEO and the major disadvantage Was that it was hard to find parts for the NEO. Does this still hold true today in 2020?

Edited March 25, 2020 by CarNoob

[KiwiRS4T]

Don't think its ever been true. Forged pistons might be hard to come by but not if you order in good time and anyway stock pistons will be fine for 300kw.

Neo all the way.

[GTSBoy]

I don't know that it is harder to get parts for a Neo. What parts? 2nd hand or new? Electronics or pistons?

Skipping past that, on the basis that it not the reason make your choice, the logical points are;

• The Neo is a better engine.
  • It makes more power stock, because of better head design and slightly better management.
  • It qualified as a low emissions vehicle when it was new, because of those changes.
  • It has solid lifters which makes it better for high revs than the vanilla 25, although they are shim over bucket (unlike the RB26's shim under style) which does make them a little bit more prone to spitting shims if you do stupid things without taking that into account.
  • They have the N1 oil pump stock.
  • They use RB26 rods, which are a little better than vanilla 25s.
  • They are newer, so you are a little more likely to get one in better condition than a 33 motor.
• The vanilla 25 will be easier to put into the R33. The wiring will be easier to achieve.
  • The Neo has some sensors and connectors and the like that the 33 didn't have. So it is extra stuff that you have to allow for.
  • But.....either way, you're transplanting a different engine in, so you have work to do regardless.

[CarNoob]

@GTSBoy  Thanks for that info, I will definitely go for a NEO. I feel like ur gonna be a really good source for me man. Thanks for your help again!