Evans Waterless coolant
Discussion
I was very keen to use Evans waterless coolant in my Bentley Arnage T as they can be partial to blowing head gaskets and I thought that this product may help to reduce this problem. However in my research I noticed that their product has a bitter sweet taste and is non toxic which is exactly the same as pure ethylene/propylene glycol at £20 for 5ltrs. This discovery spurred me on to do more research when I came across a website that tested it and confirmed my findings that it is overpriced pure glycol. Before you buy waterless coolant please check this website. www.norosion.com/evanstest. I hope this information will help you guy's make a decision, it did for me - utter crap.
I've finally got my "The Beast" Caterham SV running properly after a snooze of 11 years (the car, not me).
Unfortunately, I have just noticed in the build spec of my PTP Evo 220 engine, built at Janspeed in 2000 for the PTP endurance racing Caterham, they specifically recommend using Evans Waterless.
I wish I'd seen it after I took the head off!
In fact, Evans waterless coolant could have been formulated with high performance K1800s in mind.
The biggest problem with these engines is that the head had a flawed design in that the heat transfer paths were too long around the exhaust valves, and internal block flow is inadequate.
This can lead to localised runaway hot spots in the heads, which will easily result in annealing of the alloy, and a catastrophic drop in the Brinnell hardness, which then allows the 'fire-ring' wire in the gasket to recede into the softened alloy of the cooked head.
This stuff will not boil at anything like such low temperatures, so no steam will be produced in the waterjacket around the exhaust seats and no runaway heating should happen.
I had this car properly finessed at Emerald a few weeks ago and it put out 209 Newts of torque from very low down, and 212bhp but it would apparently have got to at least 220 but for a failing, low capacity (stock 120bhp K1600) fuel pump..
As it has about a 12 litres oil system with Pace DS and giant Brise kidney tank, I rarely see oil temps as high as 80°C and this helps keep water temp equally low.
The Beast does an incredible 44.27 mpg, and has a theoretical (not accounting for drag) top end of 165mph! It will pull 8250rpm....
Unfortunately, I have just noticed in the build spec of my PTP Evo 220 engine, built at Janspeed in 2000 for the PTP endurance racing Caterham, they specifically recommend using Evans Waterless.
I wish I'd seen it after I took the head off!
In fact, Evans waterless coolant could have been formulated with high performance K1800s in mind.
The biggest problem with these engines is that the head had a flawed design in that the heat transfer paths were too long around the exhaust valves, and internal block flow is inadequate.
This can lead to localised runaway hot spots in the heads, which will easily result in annealing of the alloy, and a catastrophic drop in the Brinnell hardness, which then allows the 'fire-ring' wire in the gasket to recede into the softened alloy of the cooked head.
This stuff will not boil at anything like such low temperatures, so no steam will be produced in the waterjacket around the exhaust seats and no runaway heating should happen.
I had this car properly finessed at Emerald a few weeks ago and it put out 209 Newts of torque from very low down, and 212bhp but it would apparently have got to at least 220 but for a failing, low capacity (stock 120bhp K1600) fuel pump..
As it has about a 12 litres oil system with Pace DS and giant Brise kidney tank, I rarely see oil temps as high as 80°C and this helps keep water temp equally low.
The Beast does an incredible 44.27 mpg, and has a theoretical (not accounting for drag) top end of 165mph! It will pull 8250rpm....
Edited by unclefester on Thursday 30th March 19:51
Eewwwwww....
I just noticed Bentleyboy's post. Check, that link is down, but this is VERY clear http://www.norosion.com/evanstest.htm
Looks like someone at Janspeed in 2000 may have got it wrong!
In fact with my head, it could make matters worse, as these test results show it's depositing a layer of inhibitor on aluminium surfaces....not really a great idea with an all ally engine and radiator.
I just noticed Bentleyboy's post. Check, that link is down, but this is VERY clear http://www.norosion.com/evanstest.htm
Looks like someone at Janspeed in 2000 may have got it wrong!
In fact with my head, it could make matters worse, as these test results show it's depositing a layer of inhibitor on aluminium surfaces....not really a great idea with an all ally engine and radiator.
The Norosion Hyperkuhl actually does seem to be a great improvement for high performance aluminium engines or alu radiators though. www.norosion.com
I'm pissed off, as a Lotus Elise S1 I sold recently had the damned Evans stuff fitted by the imbeciles I'd left it with to sell in their swanky showroom....a 'client' asked for it (they sell the muck) and they did it without even asking me. I had just put new coolant in it too!
So I've just mailed the buyer telling him to drain it asap and use the Hyperkuhl.
I'm pissed off, as a Lotus Elise S1 I sold recently had the damned Evans stuff fitted by the imbeciles I'd left it with to sell in their swanky showroom....a 'client' asked for it (they sell the muck) and they did it without even asking me. I had just put new coolant in it too!
So I've just mailed the buyer telling him to drain it asap and use the Hyperkuhl.
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