Jump to content
SAU Community

The Dissapearing Water Trick- Rb26 Consuming Water.

Mohsen

By Mohsen,
in General Maintenance

 Share

Recommended Posts

Mohsen Grand Master

Mohsen

Posted
Posted

hey guys
have an RB26 with a 1.3mm ACL head gasket.
car has been using water for a while, doesnt get hot, just seems to keep taking the water somewhere.
absolutely no leaks on this thing at all, which leads me to think that its busted a head gasket, which is also why it wanted to detonate when we pushed it for more boost..

going to pressure test it and comp test it tonight.

admS15 Grand Master

admS15

Posted
Posted

You may be right. The water has to go somewhere. Since you can't see an external leak and haven't mentioned milky oil, it sounds like its getting into a cylinder and being combusted. Any traces of white smoke coming out the back? Hopefully the pressure and comp test reveal something.

Farken Nissan motors and their dissapearing coolant tricks. I've had the displeasure with dealing with a similar issue in the past. Good luck. Let us know if the testing reveals anything.

Mohsen Grand Master

Mohsen

Posted
  • Author
Posted

Just a little smoke on start up, might even be the head lifting under boost.

Ordered some new arp head bolts anyway. Waiting for my mate to come around with his equipment.

Mohsen Grand Master

Mohsen

Posted
  • Author
Posted

ok started pulling shit off to pull the motor out, was just going to take it to racepace and get the boys to fix what evers wrong with it.
noticed the block looked wet behind the rear dump pipe.
will report back once its on a stand.

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

    • feartherb26
      RB25DE NEO with Haltech ECU

      By feartherb26 · Posted

      If you take the top half of the intake off you can unbolt the flap off the shaft and leave the shaft in there blocking the hole. Then you can remove the little vacuum canister off from under the manifold and get a spare vacuum line to run to the ECU. I can take some photos of it later. Probably best to get the vacuum source to the ECU sorted first though. Mine all worked mint with the base map from the GTT an I've pretty much let the closed loop sort the fueling and took 1 degree out of the whole timing map.
    • Kinkstaah
      RB25DE NEO with Haltech ECU

      By Kinkstaah · Posted

      This IS something you also have to configure in Haltech (or at least I did in the past when going from onboard-to-ECU map sensor and an external MAP sensor in haltech land).
    • Murray_Calavera
      RB25DE NEO with Haltech ECU

      By Murray_Calavera · Posted

      I'm hoping it's something as simple as the ECU is looking for an external MAP sensor, but he is trying to use the onboard MAP sensor.
    • Murray_Calavera
      RB25DE NEO with Haltech ECU

      By Murray_Calavera · Posted

      You won't need to do that if your happy to learn to tune it yourself. You 100% do not need to do that. It is not part of the learning process. It's not like driving on track and 'finding the limit by stepping over the limit'. You should not ever accidently blow up an engine and you should have setup the ECU's engine protection to save you from yourself while you are learning anyway. Plenty of us have tuned their own cars, myself included. We still come here for advice/guidance/new ideas etc.  What have you been doing so far to learn how to tune?
    • GTSBoy
      RB25DE NEO with Haltech ECU

      By GTSBoy · Posted

      Put the ECU's MAP line in your mouth. Blow as hard as you can. You should be able to see about 10 kPa, maybe 15 kPa positive pressure. Suck on it. You should be able to generate a decent vacuum to about the same level also. Note that this is only ~2 psi either way. If the MAP is reading -5 psi all the time, ignition on, engine running or not, driving around or not, then it is severely f**ked. Also, you SHOULD NOT BE DRIVING IT WITHOUT A LOAD REFERENCE. You will break the engine. Badly.
×
×
  • Create New...