Jump to content
SAU Community

Valve Clearence R34

robjay

By robjay,
in Western Australia

 Share

Recommended Posts

robjay Enthusiast

robjay

Posted
Posted

Hi All,

Folks I tell you my engine used to be super smooth at 80k kms I was very proud but now :(

My bad run in of having a service at a stinking Midas I wish I never did. I am now 100% convinced that my valves need adjusting, valves are noisy when cold and as engine warms the noise almost dissapears. I have had one opinion that its normal (the mechanic agreed that there is lifter noise but to him it seemed acceptable), however this was while engine was well hot but on cold starts its down right depressing.

My belts are slipping a third time - not timing belt they think its aircon or something else. But how is it that after 3 adjustments belts squeel on cold starts, this time just chirping momentarily.

Has this got anything to do with timing being stuffed up? whatabout harmonic ballancer plays a part?

Also can this be caused by running too lean or slightly lean over some time (I run 10psi unmodded car)?

What is this kind of thing likely to cost (adjustmenent) can it be done while I wait and am I hurting my engine the way it is after about 2000kms?

If I am right I need a valve lash adjustement. If I do a valve lash adjustment can I go for say poncams while I'm at it since engine is being ripped open?

sigh... I tell you going to Midas is like going to Red Rooster instead of Nandos.. farking fark.. letting off steam ...

Link to comment
https://www.sau.com.au/forums/topic/358137-valve-clearence-r34/
Share on other sites
NISMOGTT Collaborator

NISMOGTT

Posted
Posted

Ok mate dont get to stressed just yet ok...

You went to a run of the mill service center which means they probably used run of the mill Mineral oil, which is not to good for our cars...

Try changing the oil to something full synthetic or at least part synthetic that is a little lighter weight like a 10W-40 and see how that goes.... it might not clear up the noise straight away but give it a week and you will notice a difference...

As for the belts they might have used a cheap belt which has happened to me before or simply not tight enough - this is a simple fix and nothing to worry about, unless you leave it way too long and wear the belt and it breaks and wraps around things.

Let us all know how it goes after a GOOD oil change

bubba Grand Master

bubba

Posted
Posted

Any fully synthetic around the 0W-40 range.. personally i run Synpower 5W-50 in my forged 30 and stock 25 Neo but I think Nissan recommends 0W-40ish or something. We don't have the extreme cold temps here so you don't need to go as thin on the cold side as they do in Japland.

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

    • GTSBoy
      R34 GTR running rich and noisy turbo coincidence

      By GTSBoy · Posted

      Put a fuel pressure gauge on it. Replace the turbos. Probably completely separate issues.
    • Dose Pipe Sutututu
      R34 GTR running rich and noisy turbo coincidence

      By Dose Pipe Sutututu · Posted

      CAS maybe?
    • silviaz
      Recomended Coolant For Gt T R34

      By silviaz · Posted

      What copper washer do you guys use on the bleeder bolts? The existing one I have I had no idea where to find it in a local store, I did buy some online but that are only 1mm thick whereas my old one is 2mm+ thick and when I put the new washer out and squeeze the top radiator hose I can hear a bit of air but not with the old one. Does this matter? The new one doesn't leak, but the inner diameter is a bit loose whereas the old one threads on the bolt.
    • donut_kng
      R34 GTR running rich and noisy turbo coincidence

      By donut_kng · Posted

      Howdy all, after being out a few weeks ago on a spirited drive in my GTR I have 2 issues that oddly have appeared at the same time. Whilst accelerating quickly through the gears all of a sudden i’ve lost power at the top of third gear (below redline around 6000rpm) for no obvious reason.    From that point onwards the car has been running rich on idle, won’t really rev under load without a ton of black smoke and the odd backfire, and dying as a pull up to a set of lights unless I keep the revs up around 1500rpm. In addition when shutting down the car that same night (I was 10 minutes from home) I noticed one of the turbos was significantly noisy on wind down when shutting off the engine. After letting the car cool down overnight it starts up fine, although once it gets to temp the revs start to creep up and down, the exhaust is darker than it should be and it also sounds like it’s running rich (fat note) I’ve put a new set of plugs in it - no change, the old plugs all seemed OK with two of them being somewhat richer/fueled up than the other 3 with 1 being borderline. I’ve smoked tested the intake system via the front of the Turbos, found a split vacuum hose going to the factory boost gauge sender, which I have since replaced.  Also found another leak on the gasket coming off the rear turbo outlet, have also replaced this. After fixing both of these leaks - still have the running rich issue. I’ve also tried another pair of AFM’s - no change here After pulling off the front turbo intake pipes, there is obvious shaft play in the front turbo, which now hisses loudly on light revvs although I can’t see why this would make the car run funny even under idle. I’m curious to know why it’s running rich before I potentially replace/rebuild turbos. The car is completely stock <50,000kms  other than an exhaust. Oil and coolant are all clear. I haven’t bothered with coil packs as it looks like they won’t be the issue due to condition of the plugs. Any help appreciated as I cry myself to sleep!
    • Rezz
      R34 4 door side skirt identification

      By Rezz · Posted

      No probs at all. I used to love trying to dig up obscure info for those in need where possible going back 20+ years on SAU.  I did have another look and couldn't come up with any closer match. I'm leaning towards those skirts in your first pic are custom fitments, cut down/extended or from another car entirely and modded to fit an R34 sedan. I would've thought someone in Japan had them and taken a photo at some stage over the last 2 decades but there's nothing. Someone out there must know surely.
×
×
  • Create New...