water is leaking...help needed!! - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

Dohc · 2nd July 2009, 09:05 PM

Hi,
I did use search button before posting this and I didnt find anything.

My problem is pretty weird as I was driving my gtr home from the garage where I was putting new turbos on the car,and everything seemed to be okay.

And while I was driving home from the garage which is about 8-10km´s
I noticed the water temp gauge was rising and I when I was slowing down as I was getting closer to a parking sport on the road,I heard a sound like when the hoses explode but no hose got exploded and the water is leaking out from the back of the engine...Im not sure what this can be.

When I put water on the radiator I can hear and see the water leak on the ground from the back of the engine,and when it has stopped and I start the engine for few seconds,the leaking starts again.

Here is an old pic of the back of my engine:

http://farm4.static.flickr.com/3571/...7315f88b_o.jpg

could this be anything that I put ring on on the picture?

could it be the lower cap that has red marked on it...has popped out of the engine?
I can feel the upper cap is still on.

Im starting to think that my GT-R hates me...

Cheers,
Teitur Yngvi

seastate · 2nd July 2009, 09:32 PM

I think they're possibly burst discs that are meant to pop out if the water in the engine freezes and stop the block cracking
They shouldn't be missing but if they're designed to come out they should go back in.
What pressure are you running the cooling system at?

Asim R32GTR · 2nd July 2009, 09:51 PM

The top one gives access to the head oil / cam / valvspring / cam area.

The lower one gives access to the watersystem.

Asim

Dohc · 2nd July 2009, 09:57 PM

Quote:

Originally Posted by seastate

I think they're possibly burst discs that are meant to pop out if the water in the engine freezes and stop the block cracking
They shouldn't be missing but if they're designed to come out they should go back in.
What pressure are you running the cooling system at?

I have standard water pump,and I have nismo radiator cap that says 0,13MPa or 1,3kg/cm2

How can I see the waterpressure?

ps.I found out that the lower plug is gone.

pupsi · 2nd July 2009, 10:03 PM

Time to replace the rear core plug...

Dohc · 2nd July 2009, 11:24 PM

Where can I get new ones?

and do I have to remove the engine again to replace them?

Teitur Yngvi.

Asim R32GTR · 2nd July 2009, 11:28 PM

It will be easier to pull the gearbox.
Nissan can supply these. Or if you measure the diameter of the hole, you can maybe get it from a local car accessorie store.

Asim

frostmotorsport · 3rd July 2009, 02:33 AM

Quote:

Originally Posted by seastate

... pop out if the water in the engine freezes and stop the block cracking...

hence they are normally called "Frost Plugs" you should be able to buy a generic kit with all different sizes in it - might as well change all that you can get to while you're at it.

Dohc · 3rd July 2009, 02:09 PM

Can I press the frost plug/core plugs in the hole with my fingers/hands or do I need some tool to do it like a soft hammer or something like that?

Boydie.NI · 3rd July 2009, 03:20 PM

Soft hammer is the way to go

ANDY H · 3rd July 2009, 07:25 PM

the core plug hole is 35mm!

Andy W · 3rd July 2009, 09:11 PM

Seen them come out when a head lifts or a gasket has gone

2nd July 2009, 09:05 PM	#1 (permalink)
Dohc Dohc is driving miss daisy. GTR Register Member Join Date: Nov 2005 Location: Iceland Cars owned: Nissan Z32,Mazda GTX,R33GTS,R32 GT-R Posts: 1,443	water is leaking...help needed!! Hi, I did use search button before posting this and I didnt find anything. My problem is pretty weird as I was driving my gtr home from the garage where I was putting new turbos on the car,and everything seemed to be okay. And while I was driving home from the garage which is about 8-10km´s I noticed the water temp gauge was rising and I when I was slowing down as I was getting closer to a parking sport on the road,I heard a sound like when the hoses explode but no hose got exploded and the water is leaking out from the back of the engine...Im not sure what this can be. When I put water on the radiator I can hear and see the water leak on the ground from the back of the engine,and when it has stopped and I start the engine for few seconds,the leaking starts again. Here is an old pic of the back of my engine: http://farm4.static.flickr.com/3571/...7315f88b_o.jpg could this be anything that I put ring on on the picture? could it be the lower cap that has red marked on it...has popped out of the engine? I can feel the upper cap is still on. Im starting to think that my GT-R hates me... Cheers, Teitur Yngvi __________________

2nd July 2009, 09:32 PM	#2 (permalink)
seastate seastate has no status. GTR Register Member Join Date: Jan 2009 Location: Littlehampton Cars owned: Stagea RS4 Posts: 222	I think they're possibly burst discs that are meant to pop out if the water in the engine freezes and stop the block cracking They shouldn't be missing but if they're designed to come out they should go back in. What pressure are you running the cooling system at? __________________

2nd July 2009, 09:51 PM	#3 (permalink)
Asim R32GTR Asim R32GTR is changing colour this winter :D GTR Register Member Join Date: Sep 2003 Location: Norway / Oslo Cars owned: R32GTR LHD Posts: 1,343	The top one gives access to the head oil / cam / valvspring / cam area. The lower one gives access to the watersystem. Asim __________________

2nd July 2009, 10:03 PM	#5 (permalink)
pupsi pupsi is RIPs BUILT TWEENIEROB INSTALLED AND MAPPED. New Users Join Date: Aug 2006 Location: West London Cars owned: GTR R33. Posts: 2,600	Time to replace the rear core plug... __________________

2nd July 2009, 11:24 PM	#6 (permalink)
Dohc Dohc is driving miss daisy. GTR Register Member Join Date: Nov 2005 Location: Iceland Cars owned: Nissan Z32,Mazda GTX,R33GTS,R32 GT-R Posts: 1,443	Where can I get new ones? and do I have to remove the engine again to replace them? Teitur Yngvi. __________________

2nd July 2009, 11:28 PM	#7 (permalink)
Asim R32GTR Asim R32GTR is changing colour this winter :D GTR Register Member Join Date: Sep 2003 Location: Norway / Oslo Cars owned: R32GTR LHD Posts: 1,343	It will be easier to pull the gearbox. Nissan can supply these. Or if you measure the diameter of the hole, you can maybe get it from a local car accessorie store. Asim __________________

3rd July 2009, 02:09 PM	#9 (permalink)
Dohc Dohc is driving miss daisy. GTR Register Member Join Date: Nov 2005 Location: Iceland Cars owned: Nissan Z32,Mazda GTX,R33GTS,R32 GT-R Posts: 1,443	Can I press the frost plug/core plugs in the hole with my fingers/hands or do I need some tool to do it like a soft hammer or something like that? __________________

3rd July 2009, 03:20 PM	#10 (permalink)
Boydie.NI Boydie.NI has no status. GTR Register Member Join Date: Aug 2008 Location: Bangor Northern Ireland Cars owned: Black R32 GTR / Yaris D4-D Posts: 153	Soft hammer is the way to go __________________

3rd July 2009, 07:25 PM	#11 (permalink)
ANDY H ANDY H is R.I.P Tweenierob GTR Register Member Join Date: Mar 2005 Location: maidstone Cars owned: R32 GTR Posts: 1,657	the core plug hole is 35mm! __________________ The bull sh*t stops when the flag drops!

3rd July 2009, 09:11 PM	#12 (permalink)
Andy W Andy W has no status. New Users Join Date: Dec 2005 Location: Eastbourne Cars owned: Stagea RS V-Four Posts: 1,325	Seen them come out when a head lifts or a gasket has gone __________________

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