Rb20neo Head

[Justa32]

Just wondering if there is any big differences between silvertop rb20det heads and the rb20de neo head? Would it be worth dropping it onto a silvertop rb20?

( No i do not want an rb25 so if you dont have anything usefull dont post )

[bozodos]

good luck trying to find an RB20 NEO head in Australia, but I'm also quite interested about this lol.

[Justa32]

found a complete motor, interested to see if its worth using a rb20neo head for my 2.4 build

[bozodos]

these do run VCT right? if do, I imagine you'd have to create an oil feed for it a la rb 25/30 conversions.

[Justa32]

yeh there vct, im just wondering about the whole flow capacity of them seeing as the silvertop's heads rnt the best at it.. did they fix this problem with the neo? If it flows like a 25neo then it could be a worth wild upgrade... im asuming its going to be pretty much the same as fitting an sr20ve head to an sr20det with oil feed line's etc

[bozodos]

I honestly couldn't tell you, try doing a search, given the rarity of these motors i'd assume that there's probably fark all info out there.

[Justa32]

yeh mate, nothing except do a 25 conversion... not really that helpfull.. apparently NZ got a few of these ah well... mite b more info in the morning cya mate

[Roy]

They are shit...dont do it!!!!

Because i have one with Tomei 2.4 internals that i am looking at running....one day when i am in Australian long enough to enjoy.

I have Tomei solid lifter conversion that i will also use and i will run some R34 GTT Tomei Poncams. I have not put a NEO head side by side but it only runs 9.5:1 compression so it seem perfect for a 2.4L as when you increase the diam of the combustion chamber to suit the larger bore you lower the compression...so will work out well. I am a bit concerned about the stud pattern on the inlet side as i expect like the RB25 NEO head which does not accept R33 RB25 inlet plenums....the RB20 NEO will be problematic with inlet manifolds

[XRATED]

Are there any pictures?

[SKYPER]

I would say yes there is difference.

NA R34 NEO RB20DE has 2 intake pipes for providing air into intake plenum vs R32 RB20DET with one. So stock RB20DET turbo J pipe with BOV won't work.

Here's the photo's -

Unless you run 2x RB20DET throttlebody, throttlebody cable, etc on the intake plenum????

NA R34 NEO RB20DE ECU should be retuneable with Nistune like R34 NEO RB25DET ECU.

This is the R34 NEO RB25DE head vs R34 NEO RB25DET head thread on Nico forums -

http://forums.nicoclub.com/zerothread?id=470719

Ports are bigger on turbo R34 NEO RB25DET head. R34 NEO RB20DE head is probably the same as R34 NEO RB25DE head that has smaller ports.

But with a bit of porting, etc, maybe R34 NEO RB25DET intake manifold might fit on R34 NEO RB20DE head????

Edited February 23, 2010 by SKYPER

[Justa32]

Looking at the difference between the 2's port size's kinda makes me question the de heads? Would it actually flow better going by the size or would it need abit of machining to get it up to scratch? Im actualy running a redtop 12 port head which again looks alot different to the ones pictured on nico..

Edited February 24, 2010 by Justa32

[Justa32]

Will rb20 cams fit the rb20neo head? Or will i have to go sumthing like 25neo cams? * talking det in all this *