Jump to content
SAU Community

Can you remove the cam cover breathers?

Belly_up

By Belly_up,
in General Maintenance

 Share

Recommended Posts

Belly_up Contributor

Belly_up

Posted
Posted

Ok guys, has anyone removed the breathers from the top of the RB cam covers? They look to be a press fit, is this the case? and how did you remove them if you did. i've seen some pics of engines with different arrangements to suit catch cans etc, and was wondering how hard it is to do, without screwing up the covers.

Any help appreciated,

Adam

PS. Does anyone have a spare one of those plaquards that goes on the plug cover? the one that says "Nissan Twin Cam 24v", cause i kinda bent mine trying to pry it off :D...

Link to comment
Share on other sites
blind_elk Grand Master

blind_elk

Posted
Posted

If you're fitting oil catch cans or oil/air separators, then there's no need to remove the fittings in the rocker covers. All you do is change the plumbing to suit.

The little elbow hose on the passenger side connects to the intake plumbing, so ripping the fittings out of the rocker cover could totally stuff that up.

Link to comment
Share on other sites
dominik Contributor

dominik

Posted
Posted

hey Belly_up the breather connections that sit on top of the rocker cover do come out, they just sit in quite tight.

I have taken mine out and switched them around to run the hoses for the oil catch can, a fair few guys have done this.

Link to comment
Share on other sites
Belly_up Contributor

Belly_up

Posted
  • Author
Posted

Cool thanks for that dominik, they did look like a press fit to me, i just wasn't sure how tight...but if you reckon they come out, then i'll have to give it a shot. Will try during the week if i get time, and report back on how i go.

Link to comment
Share on other sites
  • 7 months later...
Belly_up Contributor

Belly_up

Posted
  • Author
Posted
I've seen a few engine pay pictures of RB25's with stainless braided hosing for breather pipes.  How do people get the alloy end fittings into the rocker covers and what size fittings do you need to use ?

i thought about this myself. The fittings look to be about the equivalent of -12 braid, but you could probably get away with -10.

To attach the fittings, after removing the originals, i'd either:

1) get the existing hole in the rocker cover tapped (either to a pipe fitting, or just a metric fitting for use with copper sealing washers), and then screw in an appropriate adapter to go from my chosen thread to -12 AN.

The only thing i was unsure about when i looked at it, was whether or not there was enough "meat" in the rocker cover to tap the next largest metric fitting above the size of the existing hole.

2)buy a pair of alloy weld on bosses (in -12 AN), and get your friendly local welder to tig them onto the rocker cover.

Cheers

Belly_up

Link to comment
Share on other sites

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
      My BMW 335i

      By PranK · Posted

      Ok, so we've had some (expensive) problems but nothing critical, thankfully. I get parts from FCP Euro in the states and in this instance I got 4 x genuine BMW cooling lines and 4 x OE quality oil lines (because they had no genuine stock). Well, turns out the OE quality didn't fit and the guys wasted a lot of time with them. Thankfully FCP has lifetime returns but the genuine BMW lines locally were $250 each! They also discovered my drivers side engine mount was totally dead and the replacement mount was $350. This sucks as I almost bought new mounts when I did my FCP order and I would have had both the engine mounts for less than this local one. So, I'm assuming at least another $1500 on top of the existing number. They did reassure me that the new (used) turbos looked good which was my main worry. Car will be ready for Monday pickup. 
    • Dose Pipe Sutututu
      r34 GTT Excessive fuel consumption on stock Rb25det neo

      By Dose Pipe Sutututu · Posted

      Forgot to add, that excellent economy was on street tyres, normal street alignment, I recall they were Kumho KU31. Current motor, with the silly alignment and tyres would go nowhere near those numbers.
    • GTSBoy
      r34 GTT Excessive fuel consumption on stock Rb25det neo

      By GTSBoy · Posted

      And also, as small as the effect may be, the larger exhaust side places a lower restriction on the exhaust flow, even when off boost. When my bigger turbo went on you could hear the difference in the exhaust note at cruise (almost everywhere actually) and fuel consumption went down a little bit.
    • Dose Pipe Sutututu
      r34 GTT Excessive fuel consumption on stock Rb25det neo

      By Dose Pipe Sutututu · Posted

      I got better economy after fitting a bigger turbo (when purely highway driving, Sydney to Forster, got down to ~8.3L/100KM), as it takes more throttle and RPM to get on boost.
    • GTSBoy
      Best bolt-on twins for RB26, ~300kw?

      By GTSBoy · Posted

      Oops. Sorry mate. It is both excellent to hear and also surprising though. The amount of work required to (effectively manually, not on a production line) build a core vs your low retail price point is why I presumed that you were buying cores. But let's also be clear about what is meant by "build". At your price point I can't see you making cores from billet on a mill, even if CNC, or doing all the machine work on a rough casting. Surely the lumps of metal are sourced more or less ready to go from an Asian supplier, right? Maybe the same with shafts. I mean, you could turn shafts up yourself, but it's pretty slow going for items that are all essentially bulk order producable. I was always perfectly willing to believe that you assemble your wheels to shafts, fit up bearings and do all the balancing. I actually expected that you would have been doing all that even if the core did arrive from a supplier with most of that pre-assembled. Nevertheless, please accept my apology.
×
×
  • Create New...