Jump to content
SAU Community

Rb25Det Neo Cylinder Heads

RS4StagMan

By RS4StagMan,
in Four Door Family & Wagoneers

 Share

Recommended Posts

RS4StagMan Rising Star

RS4StagMan

Posted
Posted (edited)

Hi guys, I just wanted to know if the Neo head in my Series 2 Stagea requires any regular maintenance or adjustments to be done?

Or are they virtually maintenance free?

I don't hear of anybody doing any adjustments or mechanics recommending anything that needs to be done to them at major service intervals etc so am curious.

Edited by RS4StagMan
Link to comment
https://www.sau.com.au/forums/topic/386427-rb25det-neo-cylinder-heads/
Share on other sites
PN-Mad Grand Master

PN-Mad

Posted
Posted

Well, there is the cam belt if you count that, every 100k kms I think.

Neo heads have solid lifters, so after a long long time, they can require re-shimming/adjustment when the motor gets noisy.

Spark plugs are in the head too...tongue.gif

RS4StagMan Rising Star

RS4StagMan

Posted
  • Author
Posted

Well, there is the cam belt if you count that, every 100k kms I think.

Neo heads have solid lifters, so after a long long time, they can require re-shimming/adjustment when the motor gets noisy.

Spark plugs are in the head too...tongue.gif

Yeah, timing belt, tensioner, water pump, etc I know about and get done religiously with All Nissan genuine parts, but it was more the adjustments to the valve train in the head.

Is there a recommended km range for preventative maintenance or just when the lifters get noisy?

Anybody got a R34 manual they can look up.

Solid lifters , didn't know that- just like the GTR engines?

PN-Mad Grand Master

PN-Mad

Posted
Posted (edited)

Like the RB26.

I don't know the details, I've just heard people talking about it before. I don't know if they are adjustable (like my little old honda!) OR if they are just the type where you have to re-shim them. If its the latter, then you'll be paying 20 or 30 bucks just for an individual shim X24. Not something I'd do as preventative, more as a head re-fresh + valve guides, springs, etc.

But there should be some people here that know their way around a RB better than me.

Edited by PN-Mad
QWK32 Veteran

QWK32

Posted
Posted

^^^^^ agreed. I've never heard of anyone using rb26 cams in a neo nor can I see any benefit, there are plenty of affordable aftermatket cams ie tomei, and not to mention you would loose the VCT with 26 cams.

Bronx Mentor

Bronx

Posted
Posted

sorry, was supposed to say aftermarket rb26 cams.

but didnt the rb26 have VCT same as the 25's, was a different type of VCT, but could still use same sensor correct?

all i know is ive fitted them onto a bare rb25 neo head to see if they fit and they did.

then put the rb25 cams onto the 26 and they did fit too.

im also sure ive seen a thread somewhere (dont know if it was here or some other forum) about someone running 26 cams in their Neo

Bronx Mentor

Bronx

Posted
Posted

sorry guys, forgot the VCT vs CAS, got mixed up, my bad. but i did find one thread where i first looked into.

here you go

http://www.skylinesaustralia.com/forums/topic/322815-putting-aftermarket-rb26-cams-into-rb25-head/

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • PranK
      Cleaning my wheels 😍

      By PranK · Posted

      A little follow up here on the ceramic coating.  We've had storms galore here and I've done a few ks, enough to gross them up  Consensus is that they didn't get as dirty as usual, the coating definitely repelled a little of the dirt and I think they kinda snowball. They get a little dirty and then they get dirty faster which makes sense. Cleaning them regularly would allow them to protect better.  Cleaning was a breeze. I tried first to just hose them off which, unsurprisingly, did nothing. But, making the wheels wet and then just wiping them over with a used but clean microfibre cloth was all that was required. I didn't need any cleaner at all, just water and a cloth. The wheels look amazing again.
    • PranK
      My BMW 335i

      By PranK · Posted

      Gave her a nice wash today and took extra time to clean off the tree sap and tar and crap. We have a usable garage now so she'll stay cleaner longer. Took a few snaps in some nice light afterwards.   
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      OK, solid mount Z1 diff brace is in, pretty straightforward, it picks up 3 diff hat bolts and ties them to 2 support bolts on the subframe. Pretty sure someone else on here said they had reduced axle tramp with this but mine was already pretty good for smooth wheelspin, and still is....will see you this goes over time and whether I end up with a broken rear diff hat
    • Kinkstaah
      Mistakes were made, my R34 Story

      By Kinkstaah · Posted

      Ah yes, but the part in my hand was actually painted and fitted by me! I knew any front lip was likely to be sacrificial but I've had to fix it twice already... by the time I buy a fibreglass fixing kit, sort out sandpaper blocks, buy some fibreglass filler, body bog, spend the time and effort for a 'Greg' result... a new one being $290 seems like it's the better way to go and spray that with bedliner/raptor coat and we're all pretty again.. Would have preferred it last more than a month though. Them's the breaks I suppose.
    • MBS206
      HKS stroker kit step 0/1 or HKS GTIII 2530

      By MBS206 · Posted

      I find it funny that the USA is finding out all this really really weird stuff, and people from the USA are coming here treating it like gospel, yet, all the info on solving those issues is here on these forums for the last 15 odd years... Also, I know how much heat it takes to ignite the hood lining of an R33 skyline. I worked it out myself... It also took a LOT of time, and heat for it to do it... Big single, and I needed to drive the car, so retarded the timing off to "protect it". Yeah, that was a bad move for cruising on a freeway with only 15 degrees of timing on it. That was a lesson I learned around 2009. So that's over 15 odd years ago. Aligning water and oil, that's identical for any turbo engine, it's not Japanese specific. If a shop doesn't know how to make sure the core is rotated the right way, then they shouldn't be touching any turbo engine. That's not a matter of "We haven't had Skylines for that long here"...
×
×
  • Create New...