Jump to content
SAU Community

rb26 inlet valve stem discolouration/damage?

shaund

By shaund,
in Engines & Forced Induction

 Share

Recommended Posts

shaund Enthusiast

shaund

Posted
Posted
rb26 inlet valve stem discolouration/damage?

Hi All,

I've just removed my inlet manifold to have it painted and noticed that the two inlet valves in cyl 3 have some discolouration on the valve stems immediately below the valve guides. Is this normal, or should I be looking at replacing valves, guides, and seals?

This is an R33 GTR motor that is stock (except for cams and a little extra boost) and in otherwise good order and showing nothing as wrong in its performance or behaviour.

I've yet to turn the motor over and inspect the rest of the valves when they are extended. Motor is at TDC on cyl1, so these are the only inlet valves extended.

Photo is here: http://imgur.com/ZcPIgmp

Cheers!

-Shaun

89CAL Grand Master

89CAL

Posted
Posted

I suspect the flash/light may be making them look worse than they are?

Obviously they are going to wear there as that's where they run in the guides, so I wouldnt be too concerned, but its hard to tell from that photo. You need to get a photo without a flash or a light that doesnt shine back so much

shaund Enthusiast

shaund

Posted
  • Author
Posted

Thanks... Nah, they look pretty much as per the photo... there is a bit of a shadow, but its not making things look any worse than it really is.

I'll try to get some better photos on the weekend... I want to have a good look at the rest of the valve stems for both inlet and exhaust.

Cheers!

-Shaun

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
      Intro/R33 owner

      By PranK · Posted

      Welcome!  How long have you had it? And what colour is it?
    • The Bogan
      NC MX5

      By The Bogan · Posted

      "CAD" version 1.0 It will have a 15mm lip around the top for 6 × 5 or 6mm nutserts and fixtures (two on each of the three straight edges), and some pinch weld on any exposed edges, it has three mounting points, one of the power steering reservoir bolts, and two on the rad support, my 120mm hole saw will make short work of hole for the silicone joiner, with ample room for some pinch weld  I've also got enough Carbuilders "peel and stick" heat shield to cover the outside of it at the coolant expansion tank and on the engine side, as pictured, and internally on the lid and where the fuse box is, I've also got some thin, about 3mm, black 3M single sided sticky foam stuff that was left over after sealing some door drafts at home to help seal the lid As for the shape, it "sort of" matches the shape of the fuse box, so shouldn't look to "out of place" The lower area and hole for the intake will need pinch weld with a balloon on it to fully seal the hole and bottom of it, that will happen after it has been fabricated so I know exactly what size is required  Filter service has been trialed,  and so far it was a simple process  Just need to get some alloy, and then head into work to use the guillotine and break press in the workshop Hopefully it should be sorted in a week or two Guestimated outlay will be under a $50 for the stuff I don't have on hand (alloy, 6mm nutserts, the pinch weld, and wrinkle paint) Disclaimer: That's what the "voices in my head" are telling me how the filter box should end up getting done......lets see if they know what they are talking about  
    • jez NF
      The Evolution Of "night Fury"

      By jez NF · Posted

      Have been polishing up the trailer rims as they had been sitting in the shed for a few years and are really in need of some love. This was after a couple of passes with chrome polish - coming up quite well ✅ .
    • MBS206
      Intro/R33 owner

      By MBS206 · Posted

      Welcome aboard! Is your Skyline auto or manual? I'm assuming manual. Does it have any mods done yet?
    • Yeetus
      Another "where do these lines and plugs go" RB25DET question

      By Yeetus · Posted

      Hey mate, the brown and grey plugs would usually go to the TPS, brown one goes on the bottom connector and grey is the top but isn't used unless the car is auto, your TPS looks different to mine though I've got a series 2 engine.
×
×
  • Create New...