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35Mm Rb Skyline Water Outlet

sr20det510

By sr20det510,
in Fabrication

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sr20det510 Enthusiast

sr20det510

Posted
Posted

Hey Crew.

Im currently modifing an RB25 Intake Manifold.

The issue ive discovered is that the metal push in radiator fitting has started to rust inside the manifold and will start leaking.

The manifold is off now and we have modified it substantially to accept RB26 ITB's so we dont really want to have to start with another manifold.

What are my options in replacing the Metal insert?

Are they eay to remove? if anyone has done it before id appreciate some tips.

Im looking at replacing it with a peice of Billet alluminium that has a push on fitting as per the standard item.

Does anyone out there know of an alternative 35mm OD Billet water push on stlye peice thats available off the shelf?

If found this from datsport in SA id have to machine of the 3 bolt mounting plate but it should push in to the RB manifold with a bit of work.

Id prefer not to Weld if can avoid it rather stay with the OEM method of Glue and press fit a new peice.

http://datsport.com/products/images/cooling-outlet-SR20.gif

If anyone has done this before or has some options id appreciate them.

Regards

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https://www.sau.com.au/forums/topic/421876-35mm-rb-skyline-water-outlet/
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Mitchee Proficient

Mitchee

Posted
Posted

I had this happen whilst the engine was in the car. I picked up another inlet manifold with a good condition insert for $10 from a wrecker.. Heated the alloy and removed the insert with a pair of multigrips. Then I applied some sealant around it and carefully knocked it into the original manifold with a rubber mallet. Worked fine and has held up for years with no leaks.

Victory Mentor

Victory

Posted
Posted

This is a common Skyline problem for cars that have been in hard water areas.

Unique Autosports in Sydney make a "Chrome Molly Upper Radiator Outlet for the Intake Manifold" for $65. They had so many cars present for service work with this problem that they designed a replacement part (it is on their website). You simple remove the existing unit and replace it with this one.

  • 2 weeks later...
MrStabby Grand Master

MrStabby

Posted
Posted

Usually coolant systems on cars have a "sacrificial anode" part that is designed to corrode. I suspect the insert is the sacrificial bit, and if that's the case you should be able to buy the insert separately from Nissan. Chrome moly seems like a bad choice as im pretty sure its less reactive than cast iron, so it cant perform the sacrificial anode function.

On older cars i've had the sacrificial anode is the thermostat housing.

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