Rb25det R33 & R34 Neo Rb25det Differences?

[_8OO5TED_]

I did a quick search but couldnt find much, can anyone provide a link, or if its simple, a quick explaination of the differences between the R33 GTS25t RB25 and the Neo RB25 in the R34?

Thanks.

[Adriano]

R34 NEO's have different throttle(traction control) different cam angle sensor, solid lifters, fully variable inlet cam/valve timing, smaller combustion chambers, slightly different exhaust manifold, slightly different turbo with bigger exhaust housing, flat top pistons, top feed injectors, bigger intercooler, and different coil mountings, i think thats it?

[_8OO5TED_]

ahh right, so once a bigger turbo/injectors/intercooler and aftermarket ecu/manifold/cams are fitted, there is basically no difference at that stage? thanks mate

[Dale FZ1]

Valve lash by bucket + shim arrangement on Neo, similar to RB26 setup.

[shoebox]

Different wiring. I did an engine conversion on my R33, and now it has an RB25DET NEO in.

http://www.skylinesaustralia.com/forums/in...amp;pid=2702999

If you want details, you probably can call Mercury Motorsport at 1300 558 650 to find out more; they did my conversion just a few weeks back.

[Abo Bob]

In the NEO the exhaust ports are bigger than RB26 ones and the rods are the same as RB26.

[Adriano]

Valve lash by bucket + shim arrangement on Neo, similar to RB26 setup.

More like a vg30, as a neo has the shim ontop of the bucket, wheras the rb26 is underneath(and a real pain)And one of the valves are bigger than an rb25(cant remember if its in or ex)

[S15ilvia]

Does anyone have a dyno readout comparison between the 2 ? Considering same mods or both stock?

Considering that the NEO is rated at 206kW, what about the midrange power and torque figures.

thanks.