Jump to content
SAU Community

Dipstick blowing out

Kichigai

By Kichigai,
in Engines & Forced Induction

 Share

Recommended Posts

blind_elk Grand Master

blind_elk

Posted
Posted

A mate had a similar problem in his 34 GT-R. Turned out to be a cracked piston. On high boost, the boost would force its way past the piston and pressurise the sump and spray the contents into the catch can and out all over the engine bay.

Expensive engine rebuild solved the problem.

macka Veteran

macka

Posted
Posted

Oh dear! Same thing as i had.....

Broken Ring lands so no seal past the 2nd ring and it maybe crank blowby!

I hope not mate

Good luck with your findings keep an eye for blue smoke out the back and u may have to do a compression test.

U could try to Increase the Crankcase ventilation as GTStVSPEC says if your running 15psi of thereabouts!

Sorry didnt mean to double up just talking from experience..

All the best :uh-huh:

SeriesIIGTST Mentor

SeriesIIGTST

Posted
Posted

I had problems with this also. I did a compression test on mine and found cylinder 6 was right down. We tried a lot of things to try and figure out why. I actually found putting slightly thicker oil in did the trick. Seriously, this sounds dodgy but i swear, we did tests before and after, drove it nice, rang the balls of it, the whole works and never had a problem since. It would seem that the oil was too thin and simply draining away from the valves.

Hopefully you may find this to work. I am far and away, not mechanically minded so I have no idea why this works, all i know is that's the only thing we changed on my car and the compression literally doubled back up to normal afterwards.

Good luck!

whatsisname Grand Master

whatsisname

Posted
Posted

macka,

What did you (the engine builder?) put your broken ring lands down to? Detonation I'm guessing? If so what was the cause?

Sorry to hijack - but I thought it might add to the thread info.

Nice 1/4 fig's to mate! They look very familiar :P

macka Veteran

macka

Posted
Posted
Originally posted by whatsisname

macka,

            What did you (the engine builder?) put your broken ring lands down to? Detonation I'm guessing? If so what was the cause?  

Sorry to hijack - but I thought it might add to the thread info.  

Nice 1/4 fig's to mate! They look very familiar :(

Thanks mate :)

Well the car came over with a boost controller that didnt work properly and it pinged straight away, my guess was overboosting detonation rather than lack of fuel.

Then ceramic turbo self destructed and that didnt help. soon after blue smoke....still went ok but we decided to chuck her in the shed and open her up.

sure enough 2 pistons had cracks in them.

Gotta get yaself some of them 12s whatsisname ;)

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

    • MBS206
      Unpeeling the Orange

      By MBS206 · Posted

      I'm normally copping my own abuse from neglecting my daily drivers. "Those suspension bushes will last a bit more", "Don't worry about the oil leak, just keep topping it up". The project cars I'm always doing things slowly on them as I'm wanting them to be done better, and neater, and nicer. Luckily I don't have to deal with 18 year old Matt's "Learning to wire" stuff in the project cars. And there's only one piece of wiring I'm displeased about in the Landcruiser, and it's about to be cut out... However, the box loads of parts that have been going through this place lately for the Landcruiser... Brake pads Brake Rotors Full handbrake overhaul Wheel Bearings Seals Swivel hubs Steering Boxes Half the suspension joints Shocks Air bags (Ones to go in the rear springs for towing) Water pump Timing kit Lower timing case Harmonic Balancer Radiator Lots of other little seals and shits Gas struts for the bonnet New power window switches And god knows what else I've forgotten... Ha ha ha I have my fingers crossed the pinion seals don't start leaking on the diffs, that the transfer case doesn't leak, and the gearbox input shaft doesn't leak, nor the rear main seal. As they're about the only seals I haven't replaced in the driveline! I'm seriously eyeing off buying new caliper rebuild kits front and rear brake calipers... I'll probably recheck all the valve clearances soon too, and hopefully, it should be all good and sweet to haul some long distance trips again!
    • GTSBoy
      Unpeeling the Orange

      By GTSBoy · Posted

      Every time I pull my 3x gauges out of the console and see the crack-addict way that I did the wiring, and I just can't bring myself to tear it all apart and "make it nice", because it is currently working. In fact, the last time I was in there I probably made it worse.
    • Kinkstaah
      Unpeeling the Orange

      By Kinkstaah · Posted

      The best part is when you own the car long enough that you look back and find your OWN ham fisted amateur shit!
    • MBS206
      Unpeeling the Orange

      By MBS206 · Posted

      The annoying part about neglect, is when you start to replace one thing, and find ten more broken things. Ham fisted monkey repairs you normally only find out about when trying to do something unrelated! Ha ha   Neglect you can kind of anticipate the huge costs to fix it all. Ham fistedness is normally a shock the first time your work on a new old car, as everything "looked" good before.
    • MBS206
      What brakes on R34 GTT(Europe)

      By MBS206 · Posted

      For DBA, check out their guide table here. https://dba.com.au/wp-content/uploads/2023/01/Direct_Replacement-Guide-2021.2.pdf   Additionally they have some other guides and info on how to make sure you choose the right pad.
×
×
  • Create New...