All Things Chev

[mudnut]

It usually leaves a very minimal crust of rusty powder. I've just kept adding to it. After 5 years I maybe have 1/2 a litre of residue.

And yes. Collecting all the coolant is almost impossible for an RB30.

[PeeBee]

Waterless coolant wont make it run cooler.

Keep in mind the other aspects of a cooling system. No point in raising the boiling temperature to levels that you engine is already damaged at. Also keep in mind increasing boiling point or any temperature will increase system pressure so you are still at factory limits unless a high psi cap is used.

For the most part the glycol or coolant is mostly for corrosion protection. While it does help with temperature properties so does a pressurised system so they work hand in hand. The coolant, water or even the "waterless" coolant is only a median to carry the heat to the heat exchanger. At best you might get 12 degrees differential across a radiator. So if any other part of the system is not coping it is not really the coolant at fault.

Agree with what you say matt, the focus is elimination of the vapour which causes both erosion and also inhibits the thermal transfer. I get around the 10 - 12 deg across the radiator as you suggest. i don't for a minute expect it to make the vehicle run cooler, more have a liquid that remains stable at the elevated temperatures. I have not checked what pressure the supplied radiator cap is as its not a nissan unit, but fair point. Whats stopping this right now is the double dip cost of conditioning the engine to remove the water, then filling with the high temp coolant. Its a big cost with a marginal gain, however I think its worth chasing to be honest.

[MB]

@poindexter Ralph mate, any updates/progress. Super keen to please see a Vic-P400 out here pioneer good man ;-)


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[poindexter]

The situation thus far is, truck goes in after I come back from a week away during November.
I have spoken to said conversion dude, and all ducks have been lined up.
Just waiting for the end of November to come around.
I've inspected the exhaust manifolds, they are very restrictive, Brunswick Diesel recommends extractors and a 4" exhaust for the P400, we'll see what can fit.

[MB]

Looking forward to it mate, can hardly wait for sure! 4” exhausts and a deep P400 super tough girdle down there squeezed in will be awesome:-) Safe Travels !!


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[MB]

Possibly the slowest modification ever I’ve undertaken, quick update though. Finally found/purchased a suitably sized ‘Davies Craig-Hydro Cool’ Made for autos but hoping this will suffice on the old 1999 power steering coolers and hard lines removal to make way for the twin Serco oil coolers install thereafter.


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[PeeBee]

Mark, check your system pressure on both sides of the pump. These fittings are hose clamp style by the looks of it, and I think the ones you have now are crimped. I think the supply pressure is around 1300psi from memory - from my earlier investigations on nissan Patrol PS pumps and drivers for the MileMarker winch. I think these things are designed for a very moderate low side pressure - others may know more of course but worth it to check before blowing a hose especially when loaded up against a rock ledge.

[MB]

Thanks mate :-) ! The current hard lines (stock GU believed) are sectioned in places along by factory flared to rubber with only worse than hose clamps, (those crappy steel plier compress release jobbies) :-(


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[matfew]

Coolers are all on the low pressue side from what I have seem in most cars Phil. Never seen any finned heat transfer unit in a car capable of holding much more then 20psi haha.

[PeeBee]

Coolers are all on the low pressue side from what I have seem in most cars Phil. Never seen any finned heat transfer unit in a car capable of holding much more then 20psi haha.

Yes agree, but you never know!!!