Posts Tagged ‘ Waterless Coolant ’

Astra H VXR K06 Conversion

One of our recent jobs was this Astra H VXR, brought in to have a K06 turbocharger fitted (complete with an uprated recirculation valve), along with our CSRacing Full Height Front Mounted Intercooler. Whilst in our workshop it was also converted to Evans Power Cool 180 Waterless Coolant.

Already fitted with a 70mm exhaust system it was onto the rolling road for mapping and full set up. During mapping the mid range and top end boost was reduced slightly due to the 70mm exhaust system giving more back pressure than a 76mm system and also because the engine did not have steel rods or uprated valve springs. Once the ignition timing and fuel were optimised we saw results of 304 point something bhp (so nearly 305bhp!) and 341 lb ft torque. With a 76mm system estimated gains are 305-310bhp so this particular car is making good power on a 70mm system.

There is still some in reserve to come for this car once it has a 76mm exhaust system to help with back pressure reduction as 310bhp+ is more than possible, with potentially even more should an inlet manifold, steel rods and uprated valve springs/shims be fitted.

Astra H VXR with K06 Conversion

Astra H VXR with K06 Conversion

Corsa VXR Engine Build

This low mileage Corsa VXR was booked in with us recently for an engine rebuild. It was a very late car with a B16LER engine.

The whole process starts with removing the engine and gearbox from the car, separating the gearbox from the engine and then stripping the engine down to a bare block and head. The block is then rebored and honed to suit an oversize 79.5mm forged piston and to achieve the correct piston to bore clearance. Once it is fully cleaned the block is then rebuilt with new forged pistons and rings, steel rods, uprated ARP rod bolts, new big end bearings, new gaskets and head bolts. On such a low mileage engine (4k) the main bearings, timing belt, tensioner, pulleys, oil pump and water pump were all as new and could be refitted. On higher mileage engines we recommend that these are replaced as necessary. As necessary the valve stem seals are replaced and the valves reseated. If either of the block or head faces need refacing this is carried out at ther same time as is additional balancing work if required.

Once the engine is built back up with its ancillaries and timed up, it is refitted to the gearbox and then fitted back into the engine bay. Engine oil, suitable for running in and coolant are added and the engine is then run up and road tested. We recommend the addition of Evans PowerCool 180 Waterless Coolant as part of an engine rebuild.

It takes approximately a week for this type of work to be completed.

Here are some pictures of the process:

Astra H VXR – PowerCool 180 Conversion

We had this very well speced Astra H VXR in with us recently for a full enhanced service, changing all the filters, fitting uprated NGK spark plugs, brake fluid change to DOT 5.1 and adding our high quality fully synthetic Valvoline SynPower 5w-40 oil. Already fitted with Team Dynamics Pro Race 1.2 Alloy Wheels, VXRacing AP 4 Pot 343mm Front Brakes, 285bhp upgrade with full 76mm exhaust system it is a great road car and can sometimes be seen making the odd appearance out on track from time to time.

In addition to the enhanced service, we also carried out a conversion from the traditional water based antifreeze to Evans Waterless PowerCool 180 Coolant with all the associated benefits that the waterless coolant brings.

Astra H VXR - Enhanced Service and PowerCool 180 Conversion

Astra H VXR – Enhanced Service and PowerCool 180 Conversion

How Waterless Coolant Works.

Water is an excellent fluid for cooling whilst in a liquid state, but when water turns to steam it has virtually no capacity for heat transfer. Evans is a superior fluid for transferring heat in engines because it remains in a liquid state until above 180°C. This article details the benefits of a significantly higher boiling point.

Within an engine cooling system the hottest surfaces are those adjacent to the combustion chamber, specifically the cylinder liners and cylinder head. In these hot spots water is likely to vaporise preventing efficient cooling and causing loss of performance and unnecessary engine damage. When the coolant fails in this way the engine becomes even hotter causing more hot spots and more steam.

Evans waterless coolants will not boil around these engine hotspots maintaining efficient cooling performance even when the engine is put under extreme conditions. When water turns to steam it pressurises the cooling system putting strain on hoses and other components. The significantly higher boiling point of Evans coolants means 75% less pressure than water resulting in a less stressed cooling system.

Water contains oxygen which causes corrosion and also allows electrolytic activity which further damages engine metals (chemical limitations of water). Evans waterless coolants eliminate corrosion and electrolytic activity significantly increasing the life of the engine.

Nucleate Boiling

Nucleate Boiling

Traditional water based coolants regularly cross the thermal boundary that separates efficient Nucleate Boiling (A) from inefficient Critical Heat Flux (CHF). CHF is synonymous with the condition ‘Departure from Nucleate Boiling’ (DNB). When DNB occurs, a layer of steam bubbles form adjacent to the engine hot spots (B).

Steam dissipates less than 1/30th of the heat that water does, rapidly over-heating local metal, causing premature detonation. The high boiling point of Evans Waterless Coolants, such as Power Cool 180, prevents DNB providing more efficient cooling in engine hot spots.

Convert your car to Waterless Engine Coolant:

Evans Waterless Engine Coolant

We are pleased to confirm that we are now testing Evans Waterless Coolant. Evan’s Power Cool 180 High Performance Waterless Coolant for performance & track cars is designed for high performance engines fabricated from a mixture of cast iron, copper, steel and aluminium components. It has a number of advantages over conventional coolant, which are listed below.

Power Cool

Power Cool

Conversion to Waterless Coolant is fairly straightforward, with using Evans Prep Fluid is formulated to hygroscopically absorb water whilst flushing loose dirt and scale from the cooling system prior to filling with Evans Waterless Coolant. The job can be completed in just a few hours by either a professional workshop or competent enthusiast.

Benefits of Waterless Over Water-Based Coolants:

Eliminates Overheating
Evans Waterless Coolants have a boiling point above 180°C and will not vapourise, thus eliminating overheating, boil-over and after-boil.

Reduces Pressure
Evans Waterless Coolants generate very low vapour pressures reducing strain on engine cooling system components.

Prevents Corrosion
Evans Waterless Coolants contain no oxygen effectively eliminating corrosion.

Increases BHP
Evans Waterless Coolants eliminate pre-ignition and detonation caused by overheating, thus improving combustion efficiency and delivering more power.

Stops Erosion
Evans Waterless Coolants prevent cavitation and eliminate liner and cooling pump erosion.

Freeze Protection
Evans Waterless Coolants freeze below -40ºC.

Non-Toxic
Evans Waterless Coolants are proven to be Non-Toxic. Standard anti-freeze is toxic and known to kill pets.

From what we have seen and heard about this product so far we are confident that it will outperform all expectations.

Prices for Power Cool range from £29.95 – £64.95 and £15.99 – £39.95 for Prep Fluid.

Available by Mail Order (Tel: 01692 404313) and online.

For further information on Evans waterless Engine Coolant visit: http://www.evanscoolants.co.uk/technical/questions-&-answers/38

Power Cool 180°Download Product Brochures 2 Page Data Sheet

4 Page Brochure

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