Neo4 RB25DET questions

[Dynamix]

Hello all, I have an R33 Gts-t with a Neo4 rb25det in it from an r34gt-t and was wondering what version of ecu (powerfc/-safc) would i have to get for my car, its probly an easy answer but I'd rather know than make a mistake. Also i was reading somewhere that the neo4 gt-t has solid cam lifters instead of hydraulic, is this true?

[Bass Junky]

You would need the power FC from an R34.

Be careful though, as the R34 Neo has traction control and a double throttle body....

Not sure about the solid lifters.

[KamikazeR33]

i thought they were a neo6 not neo4

[nmcmahon83]

Maybe he got short changed 2 cylinders¿

[ed]

Yes it's true the 34 GTT has solid lifters.

[Bass Junky]

What's the good and bad of solid lifters??

Advantages?

[ed]

What's the good and bad of solid lifters??

Advantages?

From what I know

Good:

- They can open the valve faster allowing more lift and duration.

- They are lighter

- They permit greater oil restriction to the lifters allowing more oil to be dedicated to the main bearings

Bad:

- Need adjustment periodically

- Noiser

* I could be totally incorrect though :slap:

[Dynamix]

Cheers for the feedback! So i guess that makes my parts choices a little limmited..

[KamikazeR33]

not really

gtr cams will fit directly in

and so will alot of other cams i suspect

[Dynamix]

So, how exactly do I find out what parts will suit my motor because alot of places dont list r34gt-t parts as they're not as common as other skylines. So rb26 cams will fit, thats a bonus, will rb26 adjustable cam gears fit aswell? Any info i can find out what parts will go on will be great before i buy something that wont work on it..

Cheers, mat.

[Bass Junky]

Don't bother with adjustable cam gears for the NEO6. Although they will fit, I spent $600 on installing and tuning on a dyno and I recieved zero difference.

The cam gears from any RB engine will fit.

BASS OUT

[KamikazeR33]

generally aftermarket cams dont need the cam gears because they r set up properly for power