Jan 8, 2009 · The Neo actually was released as a lev (low emissions vehicle) engine which meant that it had restrictions on it and is actually a piece because if you look to spec has journal bearing turbos which wear out too fast and are just a problem waiting to happen. the plain jane old rb25det is better and easier to tune and has 2 ball bearing turbos which are the best setup to get.

Oct 21, 2005 · Neo has two butterflies one virtually shut down low on rev, which increases torque. Opens up on full throttle with the main one. VVT increases the overall top end Hp and also the 30+ HP i think you will find that the 34 boosts slighlty higher than the RB25DEt found in R33's

Oct 4, 2005 · The thing i've heard about the NEO 6's and the difference between regular rb25det is, well on the RB25DET head, its got VTC which retards or advances the intake came, so variablly timed cam. Neo 6's use variable valve and lift, in thier heads, which makes up for more of the power plus i've heard the compressions are different.

Mar 10, 2009 · I had a high flow rb25 turbo (with the VG30 ext housing) and my r33 rb25, with tomei poncams and extensive race head porting, managed to produce a respectable 268rwkw. When i upgraded to the GTRS turbo, i sold the high flow to a mate with an r34. The 100% stock/unopened neo engine made 273rwkw using the same turbo on the same dyno.

Sep 13, 2006 · Series 2 rb25 MAF is the same as NeoRB25 Gasket set works for the most partRegular RB25 Exhaust Mani will work fine when the time comes to change up the snailQ45 or something similar TB gasket should workTiming Belt,Tensioner and Water Pump on the neo is the same as the RB25CAS is the same as R34 RB26DETTAnd the wiring I'm not doingOil Pump is ...

Sep 10, 2020 · The jump from 155 to 197 crank hp between RB20 NEO and RB25 NEO is significant so I've been trying to research what, exactly, Nissan has done to accomplish this in addition to larger displacement. There's really no point in reinventing the wheel when engineers at Nissan have already done most of the work for you.

Nov 14, 2015 · The above will give you 500hp. Which is bonkers levels of power. If you want anymore than 500 reliably then you're better of fitting pistons. The NEO engine will do more power, sure - but it's a question as to how long it lasts. Some will do 600 on a standard block no problems. Some crap out at 520.

Mar 21, 2008 · - Some of the second generation neo engines had long nose crank collars - The head generally doesn't flow as well as the RB26 in stock form (not that you'd know or care) - The latest design nissan pistons that resolve the ring issues etc - It's effectively an RB25 so inlet and exhaust manifolds etc are cheap and easy to get hold of

Oct 6, 2008 · The Neo IS an RB25 and the turbo still has a ceramic exhaust wheel. All the confusion started when somebody stated (correctly) that the older RB25 compressor wheels were metal and the newer RB25 (to include Neos) were nylon to help spool times. This is ONLY the compressor wheel.

Sep 14, 2016 · The NEO block does not have the standard return plug so around 30CM to the left of where the standard oil return plug should be, there is a hole blocked by a plug (similar to sump plug). What I have done is run a high pressure and heat resistant 300PSI hose from a replacement bolt which attaches to the hose and is clamped down, the stock metal ...